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 platform->dapm.idle_bias_off = 1;
1092 if (driver->probe) {
1093 ret = driver->probe(platform);
1095 dev_err(platform->dev,
1096 "asoc: failed to probe platform %s: %d\n",
1097 platform->name, ret);
1102 if (driver->controls)
1103 snd_soc_add_platform_controls(platform, driver->controls,
1104 driver->num_controls);
1105 if (driver->dapm_routes)
1106 snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
1107 driver->num_dapm_routes);
1109 /* mark platform as probed and add to card platform list */
1110 platform->probed = 1;
1111 list_add(&platform->card_list, &card->platform_dev_list);
1112 list_add(&platform->dapm.list, &card->dapm_list);
1117 soc_cleanup_platform_debugfs(platform);
1118 module_put(platform->dev->driver->owner);
1123 static void rtd_release(struct device *dev)
1128 static int soc_post_component_init(struct snd_soc_card *card,
1129 struct snd_soc_codec *codec,
1130 int num, int dailess)
1132 struct snd_soc_dai_link *dai_link = NULL;
1133 struct snd_soc_aux_dev *aux_dev = NULL;
1134 struct snd_soc_pcm_runtime *rtd;
1135 const char *temp, *name;
1139 dai_link = &card->dai_link[num];
1140 rtd = &card->rtd[num];
1141 name = dai_link->name;
1143 aux_dev = &card->aux_dev[num];
1144 rtd = &card->rtd_aux[num];
1145 name = aux_dev->name;
1149 /* Make sure all DAPM widgets are instantiated */
1150 snd_soc_dapm_new_widgets(&codec->dapm);
1152 /* machine controls, routes and widgets are not prefixed */
1153 temp = codec->name_prefix;
1154 codec->name_prefix = NULL;
1156 /* do machine specific initialization */
1157 if (!dailess && dai_link->init)
1158 ret = dai_link->init(rtd);
1159 else if (dailess && aux_dev->init)
1160 ret = aux_dev->init(&codec->dapm);
1162 dev_err(card->dev, "asoc: failed to init %s: %d\n", name, ret);
1165 codec->name_prefix = temp;
1167 /* register the rtd device */
1170 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1173 device_initialize(rtd->dev);
1174 rtd->dev->parent = card->dev;
1175 rtd->dev->release = rtd_release;
1176 rtd->dev->init_name = name;
1177 dev_set_drvdata(rtd->dev, rtd);
1178 mutex_init(&rtd->pcm_mutex);
1179 ret = device_add(rtd->dev);
1182 "asoc: failed to register runtime device: %d\n", ret);
1185 rtd->dev_registered = 1;
1187 /* add DAPM sysfs entries for this codec */
1188 ret = snd_soc_dapm_sys_add(rtd->dev);
1191 "asoc: failed to add codec dapm sysfs entries: %d\n",
1194 /* add codec sysfs entries */
1195 ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
1198 "asoc: failed to add codec sysfs files: %d\n", ret);
1203 static int soc_probe_dai_link(struct snd_soc_card *card, int num, int order)
1205 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1206 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1207 struct snd_soc_codec *codec = rtd->codec;
1208 struct snd_soc_platform *platform = rtd->platform;
1209 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
1212 dev_dbg(card->dev, "probe %s dai link %d late %d\n",
1213 card->name, num, order);
1215 /* config components */
1216 codec_dai->codec = codec;
1217 cpu_dai->platform = platform;
1218 codec_dai->card = card;
1219 cpu_dai->card = card;
1221 /* set default power off timeout */
1222 rtd->pmdown_time = pmdown_time;
1224 /* probe the cpu_dai */
1225 if (!cpu_dai->probed &&
1226 cpu_dai->driver->probe_order == order) {
1227 if (!try_module_get(cpu_dai->dev->driver->owner))
1230 if (cpu_dai->driver->probe) {
1231 ret = cpu_dai->driver->probe(cpu_dai);
1233 pr_err("asoc: failed to probe CPU DAI %s: %d\n",
1234 cpu_dai->name, ret);
1235 module_put(cpu_dai->dev->driver->owner);
1239 cpu_dai->probed = 1;
1240 /* mark cpu_dai as probed and add to card dai list */
1241 list_add(&cpu_dai->card_list, &card->dai_dev_list);
1244 /* probe the CODEC */
1245 if (!codec->probed &&
1246 codec->driver->probe_order == order) {
1247 ret = soc_probe_codec(card, codec);
1252 /* probe the platform */
1253 if (!platform->probed &&
1254 platform->driver->probe_order == order) {
1255 ret = soc_probe_platform(card, platform);
1260 /* probe the CODEC DAI */
1261 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
1262 if (codec_dai->driver->probe) {
1263 ret = codec_dai->driver->probe(codec_dai);
1265 pr_err("asoc: failed to probe CODEC DAI %s: %d\n",
1266 codec_dai->name, ret);
1271 /* mark codec_dai as probed and add to card dai list */
1272 codec_dai->probed = 1;
1273 list_add(&codec_dai->card_list, &card->dai_dev_list);
1276 /* complete DAI probe during last probe */
1277 if (order != SND_SOC_COMP_ORDER_LAST)
1280 ret = soc_post_component_init(card, codec, num, 0);
1284 ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
1286 pr_warn("asoc: failed to add pmdown_time sysfs:%d\n", ret);
1288 /* create the pcm */
1289 ret = soc_new_pcm(rtd, num);
1291 pr_err("asoc: can't create pcm %s :%d\n",
1292 dai_link->stream_name, ret);
1296 /* add platform data for AC97 devices */
1297 if (rtd->codec_dai->driver->ac97_control)
1298 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1303 #ifdef CONFIG_SND_SOC_AC97_BUS
1304 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1308 /* Only instantiate AC97 if not already done by the adaptor
1309 * for the generic AC97 subsystem.
1311 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
1313 * It is possible that the AC97 device is already registered to
1314 * the device subsystem. This happens when the device is created
1315 * via snd_ac97_mixer(). Currently only SoC codec that does so
1316 * is the generic AC97 glue but others migh emerge.
1318 * In those cases we don't try to register the device again.
1320 if (!rtd->codec->ac97_created)
1323 ret = soc_ac97_dev_register(rtd->codec);
1325 pr_err("asoc: AC97 device register failed:%d\n", ret);
1329 rtd->codec->ac97_registered = 1;
1334 static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1336 if (codec->ac97_registered) {
1337 soc_ac97_dev_unregister(codec);
1338 codec->ac97_registered = 0;
1343 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1345 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1346 struct snd_soc_codec *codec;
1349 /* find CODEC from registered CODECs*/
1350 list_for_each_entry(codec, &codec_list, list) {
1351 if (!strcmp(codec->name, aux_dev->codec_name)) {
1352 if (codec->probed) {
1354 "asoc: codec already probed");
1361 /* codec not found */
1362 dev_err(card->dev, "asoc: codec %s not found", aux_dev->codec_name);
1366 ret = soc_probe_codec(card, codec);
1370 ret = soc_post_component_init(card, codec, num, 1);
1376 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1378 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1379 struct snd_soc_codec *codec = rtd->codec;
1381 /* unregister the rtd device */
1382 if (rtd->dev_registered) {
1383 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1384 device_del(rtd->dev);
1385 rtd->dev_registered = 0;
1388 if (codec && codec->probed)
1389 soc_remove_codec(codec);
1392 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
1393 enum snd_soc_compress_type compress_type)
1397 if (codec->cache_init)
1400 /* override the compress_type if necessary */
1401 if (compress_type && codec->compress_type != compress_type)
1402 codec->compress_type = compress_type;
1403 ret = snd_soc_cache_init(codec);
1405 dev_err(codec->dev, "Failed to set cache compression type: %d\n",
1409 codec->cache_init = 1;
1413 static void snd_soc_instantiate_card(struct snd_soc_card *card)
1415 struct snd_soc_codec *codec;
1416 struct snd_soc_codec_conf *codec_conf;
1417 enum snd_soc_compress_type compress_type;
1418 struct snd_soc_dai_link *dai_link;
1421 mutex_lock(&card->mutex);
1423 if (card->instantiated) {
1424 mutex_unlock(&card->mutex);
1429 for (i = 0; i < card->num_links; i++)
1430 soc_bind_dai_link(card, i);
1432 /* bind completed ? */
1433 if (card->num_rtd != card->num_links) {
1434 mutex_unlock(&card->mutex);
1438 /* initialize the register cache for each available codec */
1439 list_for_each_entry(codec, &codec_list, list) {
1440 if (codec->cache_init)
1442 /* by default we don't override the compress_type */
1444 /* check to see if we need to override the compress_type */
1445 for (i = 0; i < card->num_configs; ++i) {
1446 codec_conf = &card->codec_conf[i];
1447 if (!strcmp(codec->name, codec_conf->dev_name)) {
1448 compress_type = codec_conf->compress_type;
1449 if (compress_type && compress_type
1450 != codec->compress_type)
1454 ret = snd_soc_init_codec_cache(codec, compress_type);
1456 mutex_unlock(&card->mutex);
1461 /* card bind complete so register a sound card */
1462 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1463 card->owner, 0, &card->snd_card);
1465 pr_err("asoc: can't create sound card for card %s: %d\n",
1467 mutex_unlock(&card->mutex);
1470 card->snd_card->dev = card->dev;
1472 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1473 card->dapm.dev = card->dev;
1474 card->dapm.card = card;
1475 list_add(&card->dapm.list, &card->dapm_list);
1477 #ifdef CONFIG_DEBUG_FS
1478 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1481 #ifdef CONFIG_PM_SLEEP
1482 /* deferred resume work */
1483 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1486 if (card->dapm_widgets)
1487 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1488 card->num_dapm_widgets);
1490 /* initialise the sound card only once */
1492 ret = card->probe(card);
1494 goto card_probe_error;
1497 /* early DAI link probe */
1498 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1500 for (i = 0; i < card->num_links; i++) {
1501 ret = soc_probe_dai_link(card, i, order);
1503 pr_err("asoc: failed to instantiate card %s: %d\n",
1510 for (i = 0; i < card->num_aux_devs; i++) {
1511 ret = soc_probe_aux_dev(card, i);
1513 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1515 goto probe_aux_dev_err;
1519 snd_soc_dapm_link_dai_widgets(card);
1522 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1524 if (card->dapm_routes)
1525 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1526 card->num_dapm_routes);
1528 snd_soc_dapm_new_widgets(&card->dapm);
1530 for (i = 0; i < card->num_links; i++) {
1531 dai_link = &card->dai_link[i];
1533 if (dai_link->dai_fmt) {
1534 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1536 if (ret != 0 && ret != -ENOTSUPP)
1537 dev_warn(card->rtd[i].codec_dai->dev,
1538 "Failed to set DAI format: %d\n",
1541 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1543 if (ret != 0 && ret != -ENOTSUPP)
1544 dev_warn(card->rtd[i].cpu_dai->dev,
1545 "Failed to set DAI format: %d\n",
1550 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1552 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1553 "%s", card->long_name ? card->long_name : card->name);
1554 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1555 "%s", card->driver_name ? card->driver_name : card->name);
1556 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1557 switch (card->snd_card->driver[i]) {
1563 if (!isalnum(card->snd_card->driver[i]))
1564 card->snd_card->driver[i] = '_';
1569 if (card->late_probe) {
1570 ret = card->late_probe(card);
1572 dev_err(card->dev, "%s late_probe() failed: %d\n",
1574 goto probe_aux_dev_err;
1578 snd_soc_dapm_new_widgets(&card->dapm);
1580 if (card->fully_routed)
1581 list_for_each_entry(codec, &card->codec_dev_list, card_list)
1582 snd_soc_dapm_auto_nc_codec_pins(codec);
1584 ret = snd_card_register(card->snd_card);
1586 pr_err("asoc: failed to register soundcard for %s: %d\n",
1588 goto probe_aux_dev_err;
1591 #ifdef CONFIG_SND_SOC_AC97_BUS
1592 /* register any AC97 codecs */
1593 for (i = 0; i < card->num_rtd; i++) {
1594 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1596 pr_err("asoc: failed to register AC97 %s: %d\n",
1599 soc_unregister_ac97_dai_link(card->rtd[i].codec);
1600 goto probe_aux_dev_err;
1605 card->instantiated = 1;
1606 snd_soc_dapm_sync(&card->dapm);
1607 mutex_unlock(&card->mutex);
1611 for (i = 0; i < card->num_aux_devs; i++)
1612 soc_remove_aux_dev(card, i);
1615 soc_remove_dai_links(card);
1621 snd_card_free(card->snd_card);
1623 mutex_unlock(&card->mutex);
1627 * Attempt to initialise any uninitialised cards. Must be called with
1630 static void snd_soc_instantiate_cards(void)
1632 struct snd_soc_card *card;
1633 list_for_each_entry(card, &card_list, list)
1634 snd_soc_instantiate_card(card);
1637 /* probes a new socdev */
1638 static int soc_probe(struct platform_device *pdev)
1640 struct snd_soc_card *card = platform_get_drvdata(pdev);
1644 * no card, so machine driver should be registering card
1645 * we should not be here in that case so ret error
1650 dev_warn(&pdev->dev,
1651 "ASoC machine %s should use snd_soc_register_card()\n",
1654 /* Bodge while we unpick instantiation */
1655 card->dev = &pdev->dev;
1657 ret = snd_soc_register_card(card);
1659 dev_err(&pdev->dev, "Failed to register card\n");
1666 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1670 /* make sure any delayed work runs */
1671 for (i = 0; i < card->num_rtd; i++) {
1672 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1673 flush_delayed_work_sync(&rtd->delayed_work);
1676 /* remove auxiliary devices */
1677 for (i = 0; i < card->num_aux_devs; i++)
1678 soc_remove_aux_dev(card, i);
1680 /* remove and free each DAI */
1681 soc_remove_dai_links(card);
1683 soc_cleanup_card_debugfs(card);
1685 /* remove the card */
1689 snd_soc_dapm_free(&card->dapm);
1691 snd_card_free(card->snd_card);
1696 /* removes a socdev */
1697 static int soc_remove(struct platform_device *pdev)
1699 struct snd_soc_card *card = platform_get_drvdata(pdev);
1701 snd_soc_unregister_card(card);
1705 int snd_soc_poweroff(struct device *dev)
1707 struct snd_soc_card *card = dev_get_drvdata(dev);
1710 if (!card->instantiated)
1713 /* Flush out pmdown_time work - we actually do want to run it
1714 * now, we're shutting down so no imminent restart. */
1715 for (i = 0; i < card->num_rtd; i++) {
1716 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1717 flush_delayed_work_sync(&rtd->delayed_work);
1720 snd_soc_dapm_shutdown(card);
1724 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
1726 const struct dev_pm_ops snd_soc_pm_ops = {
1727 .suspend = snd_soc_suspend,
1728 .resume = snd_soc_resume,
1729 .freeze = snd_soc_suspend,
1730 .thaw = snd_soc_resume,
1731 .poweroff = snd_soc_poweroff,
1732 .restore = snd_soc_resume,
1734 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
1736 /* ASoC platform driver */
1737 static struct platform_driver soc_driver = {
1739 .name = "soc-audio",
1740 .owner = THIS_MODULE,
1741 .pm = &snd_soc_pm_ops,
1744 .remove = soc_remove,
1748 * snd_soc_codec_volatile_register: Report if a register is volatile.
1750 * @codec: CODEC to query.
1751 * @reg: Register to query.
1753 * Boolean function indiciating if a CODEC register is volatile.
1755 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
1758 if (codec->volatile_register)
1759 return codec->volatile_register(codec, reg);
1763 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
1766 * snd_soc_codec_readable_register: Report if a register is readable.
1768 * @codec: CODEC to query.
1769 * @reg: Register to query.
1771 * Boolean function indicating if a CODEC register is readable.
1773 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
1776 if (codec->readable_register)
1777 return codec->readable_register(codec, reg);
1781 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
1784 * snd_soc_codec_writable_register: Report if a register is writable.
1786 * @codec: CODEC to query.
1787 * @reg: Register to query.
1789 * Boolean function indicating if a CODEC register is writable.
1791 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
1794 if (codec->writable_register)
1795 return codec->writable_register(codec, reg);
1799 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
1801 int snd_soc_platform_read(struct snd_soc_platform *platform,
1806 if (!platform->driver->read) {
1807 dev_err(platform->dev, "platform has no read back\n");
1811 ret = platform->driver->read(platform, reg);
1812 dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
1813 trace_snd_soc_preg_read(platform, reg, ret);
1817 EXPORT_SYMBOL_GPL(snd_soc_platform_read);
1819 int snd_soc_platform_write(struct snd_soc_platform *platform,
1820 unsigned int reg, unsigned int val)
1822 if (!platform->driver->write) {
1823 dev_err(platform->dev, "platform has no write back\n");
1827 dev_dbg(platform->dev, "write %x = %x\n", reg, val);
1828 trace_snd_soc_preg_write(platform, reg, val);
1829 return platform->driver->write(platform, reg, val);
1831 EXPORT_SYMBOL_GPL(snd_soc_platform_write);
1834 * snd_soc_new_ac97_codec - initailise AC97 device
1835 * @codec: audio codec
1836 * @ops: AC97 bus operations
1837 * @num: AC97 codec number
1839 * Initialises AC97 codec resources for use by ad-hoc devices only.
1841 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
1842 struct snd_ac97_bus_ops *ops, int num)
1844 mutex_lock(&codec->mutex);
1846 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
1847 if (codec->ac97 == NULL) {
1848 mutex_unlock(&codec->mutex);
1852 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
1853 if (codec->ac97->bus == NULL) {
1856 mutex_unlock(&codec->mutex);
1860 codec->ac97->bus->ops = ops;
1861 codec->ac97->num = num;
1864 * Mark the AC97 device to be created by us. This way we ensure that the
1865 * device will be registered with the device subsystem later on.
1867 codec->ac97_created = 1;
1869 mutex_unlock(&codec->mutex);
1872 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
1875 * snd_soc_free_ac97_codec - free AC97 codec device
1876 * @codec: audio codec
1878 * Frees AC97 codec device resources.
1880 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
1882 mutex_lock(&codec->mutex);
1883 #ifdef CONFIG_SND_SOC_AC97_BUS
1884 soc_unregister_ac97_dai_link(codec);
1886 kfree(codec->ac97->bus);
1889 codec->ac97_created = 0;
1890 mutex_unlock(&codec->mutex);
1892 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
1894 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
1898 ret = codec->read(codec, reg);
1899 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
1900 trace_snd_soc_reg_read(codec, reg, ret);
1904 EXPORT_SYMBOL_GPL(snd_soc_read);
1906 unsigned int snd_soc_write(struct snd_soc_codec *codec,
1907 unsigned int reg, unsigned int val)
1909 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
1910 trace_snd_soc_reg_write(codec, reg, val);
1911 return codec->write(codec, reg, val);
1913 EXPORT_SYMBOL_GPL(snd_soc_write);
1915 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
1916 unsigned int reg, const void *data, size_t len)
1918 return codec->bulk_write_raw(codec, reg, data, len);
1920 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw);
1923 * snd_soc_update_bits - update codec register bits
1924 * @codec: audio codec
1925 * @reg: codec register
1926 * @mask: register mask
1929 * Writes new register value.
1931 * Returns 1 for change, 0 for no change, or negative error code.
1933 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
1934 unsigned int mask, unsigned int value)
1937 unsigned int old, new;
1940 if (codec->using_regmap) {
1941 ret = regmap_update_bits_check(codec->control_data, reg,
1942 mask, value, &change);
1944 ret = snd_soc_read(codec, reg);
1949 new = (old & ~mask) | (value & mask);
1950 change = old != new;
1952 ret = snd_soc_write(codec, reg, new);
1960 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
1963 * snd_soc_update_bits_locked - update codec register bits
1964 * @codec: audio codec
1965 * @reg: codec register
1966 * @mask: register mask
1969 * Writes new register value, and takes the codec mutex.
1971 * Returns 1 for change else 0.
1973 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
1974 unsigned short reg, unsigned int mask,
1979 mutex_lock(&codec->mutex);
1980 change = snd_soc_update_bits(codec, reg, mask, value);
1981 mutex_unlock(&codec->mutex);
1985 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
1988 * snd_soc_test_bits - test register for change
1989 * @codec: audio codec
1990 * @reg: codec register
1991 * @mask: register mask
1994 * Tests a register with a new value and checks if the new value is
1995 * different from the old value.
1997 * Returns 1 for change else 0.
1999 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
2000 unsigned int mask, unsigned int value)
2003 unsigned int old, new;
2005 old = snd_soc_read(codec, reg);
2006 new = (old & ~mask) | value;
2007 change = old != new;
2011 EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2014 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2015 * @substream: the pcm substream
2016 * @hw: the hardware parameters
2018 * Sets the substream runtime hardware parameters.
2020 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
2021 const struct snd_pcm_hardware *hw)
2023 struct snd_pcm_runtime *runtime = substream->runtime;
2024 runtime->hw.info = hw->info;
2025 runtime->hw.formats = hw->formats;
2026 runtime->hw.period_bytes_min = hw->period_bytes_min;
2027 runtime->hw.period_bytes_max = hw->period_bytes_max;
2028 runtime->hw.periods_min = hw->periods_min;
2029 runtime->hw.periods_max = hw->periods_max;
2030 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
2031 runtime->hw.fifo_size = hw->fifo_size;
2034 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
2037 * snd_soc_cnew - create new control
2038 * @_template: control template
2039 * @data: control private data
2040 * @long_name: control long name
2041 * @prefix: control name prefix
2043 * Create a new mixer control from a template control.
2045 * Returns 0 for success, else error.
2047 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2048 void *data, const char *long_name,
2051 struct snd_kcontrol_new template;
2052 struct snd_kcontrol *kcontrol;
2056 memcpy(&template, _template, sizeof(template));
2060 long_name = template.name;
2063 name_len = strlen(long_name) + strlen(prefix) + 2;
2064 name = kmalloc(name_len, GFP_KERNEL);
2068 snprintf(name, name_len, "%s %s", prefix, long_name);
2070 template.name = name;
2072 template.name = long_name;
2075 kcontrol = snd_ctl_new1(&template, data);
2081 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2083 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2084 const struct snd_kcontrol_new *controls, int num_controls,
2085 const char *prefix, void *data)
2089 for (i = 0; i < num_controls; i++) {
2090 const struct snd_kcontrol_new *control = &controls[i];
2091 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2092 control->name, prefix));
2094 dev_err(dev, "Failed to add %s: %d\n", control->name, err);
2103 * snd_soc_add_codec_controls - add an array of controls to a codec.
2104 * Convenience function to add a list of controls. Many codecs were
2105 * duplicating this code.
2107 * @codec: codec to add controls to
2108 * @controls: array of controls to add
2109 * @num_controls: number of elements in the array
2111 * Return 0 for success, else error.
2113 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2114 const struct snd_kcontrol_new *controls, int num_controls)
2116 struct snd_card *card = codec->card->snd_card;
2118 return snd_soc_add_controls(card, codec->dev, controls, num_controls,
2119 codec->name_prefix, codec);
2121 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2124 * snd_soc_add_platform_controls - add an array of controls to a platform.
2125 * Convenience function to add a list of controls.
2127 * @platform: platform to add controls to
2128 * @controls: array of controls to add
2129 * @num_controls: number of elements in the array
2131 * Return 0 for success, else error.
2133 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2134 const struct snd_kcontrol_new *controls, int num_controls)
2136 struct snd_card *card = platform->card->snd_card;
2138 return snd_soc_add_controls(card, platform->dev, controls, num_controls,
2141 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2144 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2145 * Convenience function to add a list of controls.
2147 * @soc_card: SoC card to add controls to
2148 * @controls: array of controls to add
2149 * @num_controls: number of elements in the array
2151 * Return 0 for success, else error.
2153 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2154 const struct snd_kcontrol_new *controls, int num_controls)
2156 struct snd_card *card = soc_card->snd_card;
2158 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2161 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2164 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2165 * Convienience function to add a list of controls.
2167 * @dai: DAI to add controls to
2168 * @controls: array of controls to add
2169 * @num_controls: number of elements in the array
2171 * Return 0 for success, else error.
2173 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2174 const struct snd_kcontrol_new *controls, int num_controls)
2176 struct snd_card *card = dai->card->snd_card;
2178 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2181 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2184 * snd_soc_info_enum_double - enumerated double mixer info callback
2185 * @kcontrol: mixer control
2186 * @uinfo: control element information
2188 * Callback to provide information about a double enumerated
2191 * Returns 0 for success.
2193 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2194 struct snd_ctl_elem_info *uinfo)
2196 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2198 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2199 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2200 uinfo->value.enumerated.items = e->max;
2202 if (uinfo->value.enumerated.item > e->max - 1)
2203 uinfo->value.enumerated.item = e->max - 1;
2204 strcpy(uinfo->value.enumerated.name,
2205 e->texts[uinfo->value.enumerated.item]);
2208 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2211 * snd_soc_get_enum_double - enumerated double mixer get callback
2212 * @kcontrol: mixer control
2213 * @ucontrol: control element information
2215 * Callback to get the value of a double enumerated mixer.
2217 * Returns 0 for success.
2219 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2220 struct snd_ctl_elem_value *ucontrol)
2222 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2223 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2224 unsigned int val, bitmask;
2226 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
2228 val = snd_soc_read(codec, e->reg);
2229 ucontrol->value.enumerated.item[0]
2230 = (val >> e->shift_l) & (bitmask - 1);
2231 if (e->shift_l != e->shift_r)
2232 ucontrol->value.enumerated.item[1] =
2233 (val >> e->shift_r) & (bitmask - 1);
2237 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2240 * snd_soc_put_enum_double - enumerated double mixer put callback
2241 * @kcontrol: mixer control
2242 * @ucontrol: control element information
2244 * Callback to set the value of a double enumerated mixer.
2246 * Returns 0 for success.
2248 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2249 struct snd_ctl_elem_value *ucontrol)
2251 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2252 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2254 unsigned int mask, bitmask;
2256 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
2258 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2260 val = ucontrol->value.enumerated.item[0] << e->shift_l;
2261 mask = (bitmask - 1) << e->shift_l;
2262 if (e->shift_l != e->shift_r) {
2263 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2265 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2266 mask |= (bitmask - 1) << e->shift_r;
2269 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2271 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2274 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2275 * @kcontrol: mixer control
2276 * @ucontrol: control element information
2278 * Callback to get the value of a double semi enumerated mixer.
2280 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2281 * used for handling bitfield coded enumeration for example.
2283 * Returns 0 for success.
2285 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
2286 struct snd_ctl_elem_value *ucontrol)
2288 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2289 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2290 unsigned int reg_val, val, mux;
2292 reg_val = snd_soc_read(codec, e->reg);
2293 val = (reg_val >> e->shift_l) & e->mask;
2294 for (mux = 0; mux < e->max; mux++) {
2295 if (val == e->values[mux])
2298 ucontrol->value.enumerated.item[0] = mux;
2299 if (e->shift_l != e->shift_r) {
2300 val = (reg_val >> e->shift_r) & e->mask;
2301 for (mux = 0; mux < e->max; mux++) {
2302 if (val == e->values[mux])
2305 ucontrol->value.enumerated.item[1] = mux;
2310 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
2313 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2314 * @kcontrol: mixer control
2315 * @ucontrol: control element information
2317 * Callback to set the value of a double semi enumerated mixer.
2319 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2320 * used for handling bitfield coded enumeration for example.
2322 * Returns 0 for success.
2324 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
2325 struct snd_ctl_elem_value *ucontrol)
2327 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2328 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2332 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2334 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2335 mask = e->mask << e->shift_l;
2336 if (e->shift_l != e->shift_r) {
2337 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2339 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2340 mask |= e->mask << e->shift_r;
2343 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2345 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
2348 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2349 * @kcontrol: mixer control
2350 * @uinfo: control element information
2352 * Callback to provide information about an external enumerated
2355 * Returns 0 for success.
2357 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
2358 struct snd_ctl_elem_info *uinfo)
2360 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2362 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2364 uinfo->value.enumerated.items = e->max;
2366 if (uinfo->value.enumerated.item > e->max - 1)
2367 uinfo->value.enumerated.item = e->max - 1;
2368 strcpy(uinfo->value.enumerated.name,
2369 e->texts[uinfo->value.enumerated.item]);
2372 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);
2375 * snd_soc_info_volsw_ext - external single mixer info callback
2376 * @kcontrol: mixer control
2377 * @uinfo: control element information
2379 * Callback to provide information about a single external mixer control.
2381 * Returns 0 for success.
2383 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
2384 struct snd_ctl_elem_info *uinfo)
2386 int max = kcontrol->private_value;
2388 if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
2389 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2391 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2394 uinfo->value.integer.min = 0;
2395 uinfo->value.integer.max = max;
2398 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);
2401 * snd_soc_info_volsw - single mixer info callback
2402 * @kcontrol: mixer control
2403 * @uinfo: control element information
2405 * Callback to provide information about a single mixer control, or a double
2406 * mixer control that spans 2 registers.
2408 * Returns 0 for success.
2410 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2411 struct snd_ctl_elem_info *uinfo)
2413 struct soc_mixer_control *mc =
2414 (struct soc_mixer_control *)kcontrol->private_value;
2417 if (!mc->platform_max)
2418 mc->platform_max = mc->max;
2419 platform_max = mc->platform_max;
2421 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2422 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2424 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2426 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2427 uinfo->value.integer.min = 0;
2428 uinfo->value.integer.max = platform_max;
2431 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2434 * snd_soc_get_volsw - single mixer get callback
2435 * @kcontrol: mixer control
2436 * @ucontrol: control element information
2438 * Callback to get the value of a single mixer control, or a double mixer
2439 * control that spans 2 registers.
2441 * Returns 0 for success.
2443 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2444 struct snd_ctl_elem_value *ucontrol)
2446 struct soc_mixer_control *mc =
2447 (struct soc_mixer_control *)kcontrol->private_value;
2448 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2449 unsigned int reg = mc->reg;
2450 unsigned int reg2 = mc->rreg;
2451 unsigned int shift = mc->shift;
2452 unsigned int rshift = mc->rshift;
2454 unsigned int mask = (1 << fls(max)) - 1;
2455 unsigned int invert = mc->invert;
2457 ucontrol->value.integer.value[0] =
2458 (snd_soc_read(codec, reg) >> shift) & mask;
2460 ucontrol->value.integer.value[0] =
2461 max - ucontrol->value.integer.value[0];
2463 if (snd_soc_volsw_is_stereo(mc)) {
2465 ucontrol->value.integer.value[1] =
2466 (snd_soc_read(codec, reg) >> rshift) & mask;
2468 ucontrol->value.integer.value[1] =
2469 (snd_soc_read(codec, reg2) >> shift) & mask;
2471 ucontrol->value.integer.value[1] =
2472 max - ucontrol->value.integer.value[1];
2477 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2480 * snd_soc_put_volsw - single mixer put callback
2481 * @kcontrol: mixer control
2482 * @ucontrol: control element information
2484 * Callback to set the value of a single mixer control, or a double mixer
2485 * control that spans 2 registers.
2487 * Returns 0 for success.
2489 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2490 struct snd_ctl_elem_value *ucontrol)
2492 struct soc_mixer_control *mc =
2493 (struct soc_mixer_control *)kcontrol->private_value;
2494 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2495 unsigned int reg = mc->reg;
2496 unsigned int reg2 = mc->rreg;
2497 unsigned int shift = mc->shift;
2498 unsigned int rshift = mc->rshift;
2500 unsigned int mask = (1 << fls(max)) - 1;
2501 unsigned int invert = mc->invert;
2504 unsigned int val2 = 0;
2505 unsigned int val, val_mask;
2507 val = (ucontrol->value.integer.value[0] & mask);
2510 val_mask = mask << shift;
2512 if (snd_soc_volsw_is_stereo(mc)) {
2513 val2 = (ucontrol->value.integer.value[1] & mask);
2517 val_mask |= mask << rshift;
2518 val |= val2 << rshift;
2520 val2 = val2 << shift;
2524 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2529 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2533 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2536 * snd_soc_info_volsw_s8 - signed mixer info callback
2537 * @kcontrol: mixer control
2538 * @uinfo: control element information
2540 * Callback to provide information about a signed mixer control.
2542 * Returns 0 for success.
2544 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2545 struct snd_ctl_elem_info *uinfo)
2547 struct soc_mixer_control *mc =
2548 (struct soc_mixer_control *)kcontrol->private_value;
2552 if (!mc->platform_max)
2553 mc->platform_max = mc->max;
2554 platform_max = mc->platform_max;
2556 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2558 uinfo->value.integer.min = 0;
2559 uinfo->value.integer.max = platform_max - min;
2562 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2565 * snd_soc_get_volsw_s8 - signed mixer get callback
2566 * @kcontrol: mixer control
2567 * @ucontrol: control element information
2569 * Callback to get the value of a signed mixer control.
2571 * Returns 0 for success.
2573 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2574 struct snd_ctl_elem_value *ucontrol)
2576 struct soc_mixer_control *mc =
2577 (struct soc_mixer_control *)kcontrol->private_value;
2578 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2579 unsigned int reg = mc->reg;
2581 int val = snd_soc_read(codec, reg);
2583 ucontrol->value.integer.value[0] =
2584 ((signed char)(val & 0xff))-min;
2585 ucontrol->value.integer.value[1] =
2586 ((signed char)((val >> 8) & 0xff))-min;
2589 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2592 * snd_soc_put_volsw_sgn - signed mixer put callback
2593 * @kcontrol: mixer control
2594 * @ucontrol: control element information
2596 * Callback to set the value of a signed mixer control.
2598 * Returns 0 for success.
2600 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2601 struct snd_ctl_elem_value *ucontrol)
2603 struct soc_mixer_control *mc =
2604 (struct soc_mixer_control *)kcontrol->private_value;
2605 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2606 unsigned int reg = mc->reg;
2610 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2611 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2613 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
2615 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2618 * snd_soc_limit_volume - Set new limit to an existing volume control.
2620 * @codec: where to look for the control
2621 * @name: Name of the control
2622 * @max: new maximum limit
2624 * Return 0 for success, else error.
2626 int snd_soc_limit_volume(struct snd_soc_codec *codec,
2627 const char *name, int max)
2629 struct snd_card *card = codec->card->snd_card;
2630 struct snd_kcontrol *kctl;
2631 struct soc_mixer_control *mc;
2635 /* Sanity check for name and max */
2636 if (unlikely(!name || max <= 0))
2639 list_for_each_entry(kctl, &card->controls, list) {
2640 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
2646 mc = (struct soc_mixer_control *)kctl->private_value;
2647 if (max <= mc->max) {
2648 mc->platform_max = max;
2654 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
2657 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2658 * mixer info callback
2659 * @kcontrol: mixer control
2660 * @uinfo: control element information
2662 * Returns 0 for success.
2664 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2665 struct snd_ctl_elem_info *uinfo)
2667 struct soc_mixer_control *mc =
2668 (struct soc_mixer_control *)kcontrol->private_value;
2672 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2674 uinfo->value.integer.min = 0;
2675 uinfo->value.integer.max = max-min;
2679 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx);
2682 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
2683 * mixer get callback
2684 * @kcontrol: mixer control
2685 * @uinfo: control element information
2687 * Returns 0 for success.
2689 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2690 struct snd_ctl_elem_value *ucontrol)
2692 struct soc_mixer_control *mc =
2693 (struct soc_mixer_control *)kcontrol->private_value;
2694 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2695 unsigned int mask = (1<<mc->shift)-1;
2697 int val = snd_soc_read(codec, mc->reg) & mask;
2698 int valr = snd_soc_read(codec, mc->rreg) & mask;
2700 ucontrol->value.integer.value[0] = ((val & 0xff)-min) & mask;
2701 ucontrol->value.integer.value[1] = ((valr & 0xff)-min) & mask;
2704 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx);
2707 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
2708 * mixer put callback
2709 * @kcontrol: mixer control
2710 * @uinfo: control element information
2712 * Returns 0 for success.
2714 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2715 struct snd_ctl_elem_value *ucontrol)
2717 struct soc_mixer_control *mc =
2718 (struct soc_mixer_control *)kcontrol->private_value;
2719 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2720 unsigned int mask = (1<<mc->shift)-1;
2723 unsigned int val, valr, oval, ovalr;
2725 val = ((ucontrol->value.integer.value[0]+min) & 0xff);
2727 valr = ((ucontrol->value.integer.value[1]+min) & 0xff);
2730 oval = snd_soc_read(codec, mc->reg) & mask;
2731 ovalr = snd_soc_read(codec, mc->rreg) & mask;
2735 ret = snd_soc_write(codec, mc->reg, val);
2739 if (ovalr != valr) {
2740 ret = snd_soc_write(codec, mc->rreg, valr);
2747 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx);
2749 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
2750 struct snd_ctl_elem_info *uinfo)
2752 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2753 struct soc_bytes *params = (void *)kcontrol->private_value;
2755 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
2756 uinfo->count = params->num_regs * codec->val_bytes;
2760 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
2762 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
2763 struct snd_ctl_elem_value *ucontrol)
2765 struct soc_bytes *params = (void *)kcontrol->private_value;
2766 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2769 if (codec->using_regmap)
2770 ret = regmap_raw_read(codec->control_data, params->base,
2771 ucontrol->value.bytes.data,
2772 params->num_regs * codec->val_bytes);
2776 /* Hide any masked bytes to ensure consistent data reporting */
2777 if (ret == 0 && params->mask) {
2778 switch (codec->val_bytes) {
2780 ucontrol->value.bytes.data[0] &= ~params->mask;
2783 ((u16 *)(&ucontrol->value.bytes.data))[0]
2787 ((u32 *)(&ucontrol->value.bytes.data))[0]
2797 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
2799 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
2800 struct snd_ctl_elem_value *ucontrol)
2802 struct soc_bytes *params = (void *)kcontrol->private_value;
2803 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2808 if (!codec->using_regmap)
2811 data = ucontrol->value.bytes.data;
2812 len = params->num_regs * codec->val_bytes;
2815 * If we've got a mask then we need to preserve the register
2816 * bits. We shouldn't modify the incoming data so take a
2820 ret = regmap_read(codec->control_data, params->base, &val);
2824 val &= params->mask;
2826 data = kmemdup(data, len, GFP_KERNEL);
2830 switch (codec->val_bytes) {
2832 ((u8 *)data)[0] &= ~params->mask;
2833 ((u8 *)data)[0] |= val;
2836 ((u16 *)data)[0] &= cpu_to_be16(~params->mask);
2837 ((u16 *)data)[0] |= cpu_to_be16(val);
2840 ((u32 *)data)[0] &= cpu_to_be32(~params->mask);
2841 ((u32 *)data)[0] |= cpu_to_be32(val);
2848 ret = regmap_raw_write(codec->control_data, params->base,
2856 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
2859 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2861 * @clk_id: DAI specific clock ID
2862 * @freq: new clock frequency in Hz
2863 * @dir: new clock direction - input/output.
2865 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2867 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
2868 unsigned int freq, int dir)
2870 if (dai->driver && dai->driver->ops->set_sysclk)
2871 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
2872 else if (dai->codec && dai->codec->driver->set_sysclk)
2873 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
2878 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
2881 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2883 * @clk_id: DAI specific clock ID
2884 * @source: Source for the clock
2885 * @freq: new clock frequency in Hz
2886 * @dir: new clock direction - input/output.
2888 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2890 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
2891 int source, unsigned int freq, int dir)
2893 if (codec->driver->set_sysclk)
2894 return codec->driver->set_sysclk(codec, clk_id, source,
2899 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
2902 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2904 * @div_id: DAI specific clock divider ID
2905 * @div: new clock divisor.
2907 * Configures the clock dividers. This is used to derive the best DAI bit and
2908 * frame clocks from the system or master clock. It's best to set the DAI bit
2909 * and frame clocks as low as possible to save system power.
2911 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
2912 int div_id, int div)
2914 if (dai->driver && dai->driver->ops->set_clkdiv)
2915 return dai->driver->ops->set_clkdiv(dai, div_id, div);
2919 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
2922 * snd_soc_dai_set_pll - configure DAI PLL.
2924 * @pll_id: DAI specific PLL ID
2925 * @source: DAI specific source for the PLL
2926 * @freq_in: PLL input clock frequency in Hz
2927 * @freq_out: requested PLL output clock frequency in Hz
2929 * Configures and enables PLL to generate output clock based on input clock.
2931 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
2932 unsigned int freq_in, unsigned int freq_out)
2934 if (dai->driver && dai->driver->ops->set_pll)
2935 return dai->driver->ops->set_pll(dai, pll_id, source,
2937 else if (dai->codec && dai->codec->driver->set_pll)
2938 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
2943 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
2946 * snd_soc_codec_set_pll - configure codec PLL.
2948 * @pll_id: DAI specific PLL ID
2949 * @source: DAI specific source for the PLL
2950 * @freq_in: PLL input clock frequency in Hz
2951 * @freq_out: requested PLL output clock frequency in Hz
2953 * Configures and enables PLL to generate output clock based on input clock.
2955 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
2956 unsigned int freq_in, unsigned int freq_out)
2958 if (codec->driver->set_pll)
2959 return codec->driver->set_pll(codec, pll_id, source,
2964 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
2967 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2969 * @fmt: SND_SOC_DAIFMT_ format value.
2971 * Configures the DAI hardware format and clocking.
2973 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
2975 if (dai->driver == NULL)
2977 if (dai->driver->ops->set_fmt == NULL)
2979 return dai->driver->ops->set_fmt(dai, fmt);
2981 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
2984 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
2986 * @tx_mask: bitmask representing active TX slots.
2987 * @rx_mask: bitmask representing active RX slots.
2988 * @slots: Number of slots in use.
2989 * @slot_width: Width in bits for each slot.
2991 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
2994 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
2995 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
2997 if (dai->driver && dai->driver->ops->set_tdm_slot)
2998 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3003 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3006 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3008 * @tx_num: how many TX channels
3009 * @tx_slot: pointer to an array which imply the TX slot number channel
3011 * @rx_num: how many RX channels
3012 * @rx_slot: pointer to an array which imply the RX slot number channel
3015 * configure the relationship between channel number and TDM slot number.
3017 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3018 unsigned int tx_num, unsigned int *tx_slot,
3019 unsigned int rx_num, unsigned int *rx_slot)
3021 if (dai->driver && dai->driver->ops->set_channel_map)
3022 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3027 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3030 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3032 * @tristate: tristate enable
3034 * Tristates the DAI so that others can use it.
3036 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3038 if (dai->driver && dai->driver->ops->set_tristate)
3039 return dai->driver->ops->set_tristate(dai, tristate);
3043 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3046 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3048 * @mute: mute enable
3050 * Mutes the DAI DAC.
3052 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
3054 if (dai->driver && dai->driver->ops->digital_mute)
3055 return dai->driver->ops->digital_mute(dai, mute);
3059 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3062 * snd_soc_register_card - Register a card with the ASoC core
3064 * @card: Card to register
3067 int snd_soc_register_card(struct snd_soc_card *card)
3071 if (!card->name || !card->dev)
3074 for (i = 0; i < card->num_links; i++) {
3075 struct snd_soc_dai_link *link = &card->dai_link[i];
3078 * Codec must be specified by 1 of name or OF node,
3079 * not both or neither.
3081 if (!!link->codec_name == !!link->codec_of_node) {
3083 "Neither/both codec name/of_node are set for %s\n",
3089 * Platform may be specified by either name or OF node, but
3090 * can be left unspecified, and a dummy platform will be used.
3092 if (link->platform_name && link->platform_of_node) {
3094 "Both platform name/of_node are set for %s\n", link->name);
3099 * CPU DAI must be specified by 1 of name or OF node,
3100 * not both or neither.
3102 if (!!link->cpu_dai_name == !!link->cpu_dai_of_node) {
3104 "Neither/both cpu_dai name/of_node are set for %s\n",
3110 dev_set_drvdata(card->dev, card);
3112 snd_soc_initialize_card_lists(card);
3114 soc_init_card_debugfs(card);
3116 card->rtd = devm_kzalloc(card->dev,
3117 sizeof(struct snd_soc_pcm_runtime) *
3118 (card->num_links + card->num_aux_devs),
3120 if (card->rtd == NULL)
3123 card->rtd_aux = &card->rtd[card->num_links];
3125 for (i = 0; i < card->num_links; i++)
3126 card->rtd[i].dai_link = &card->dai_link[i];
3128 INIT_LIST_HEAD(&card->list);
3129 INIT_LIST_HEAD(&card->dapm_dirty);
3130 card->instantiated = 0;
3131 mutex_init(&card->mutex);
3133 mutex_lock(&client_mutex);
3134 list_add(&card->list, &card_list);
3135 snd_soc_instantiate_cards();
3136 mutex_unlock(&client_mutex);
3138 dev_dbg(card->dev, "Registered card '%s'\n", card->name);
3142 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3145 * snd_soc_unregister_card - Unregister a card with the ASoC core
3147 * @card: Card to unregister
3150 int snd_soc_unregister_card(struct snd_soc_card *card)
3152 if (card->instantiated)
3153 soc_cleanup_card_resources(card);
3154 mutex_lock(&client_mutex);
3155 list_del(&card->list);
3156 mutex_unlock(&client_mutex);
3157 dev_dbg(card->dev, "Unregistered card '%s'\n", card->name);
3161 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3164 * Simplify DAI link configuration by removing ".-1" from device names
3165 * and sanitizing names.
3167 static char *fmt_single_name(struct device *dev, int *id)
3169 char *found, name[NAME_SIZE];
3172 if (dev_name(dev) == NULL)
3175 strlcpy(name, dev_name(dev), NAME_SIZE);
3177 /* are we a "%s.%d" name (platform and SPI components) */
3178 found = strstr(name, dev->driver->name);
3181 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3183 /* discard ID from name if ID == -1 */
3185 found[strlen(dev->driver->name)] = '\0';
3189 /* I2C component devices are named "bus-addr" */
3190 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3191 char tmp[NAME_SIZE];
3193 /* create unique ID number from I2C addr and bus */
3194 *id = ((id1 & 0xffff) << 16) + id2;
3196 /* sanitize component name for DAI link creation */
3197 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3198 strlcpy(name, tmp, NAME_SIZE);
3203 return kstrdup(name, GFP_KERNEL);
3207 * Simplify DAI link naming for single devices with multiple DAIs by removing
3208 * any ".-1" and using the DAI name (instead of device name).
3210 static inline char *fmt_multiple_name(struct device *dev,
3211 struct snd_soc_dai_driver *dai_drv)
3213 if (dai_drv->name == NULL) {
3214 pr_err("asoc: error - multiple DAI %s registered with no name\n",
3219 return kstrdup(dai_drv->name, GFP_KERNEL);
3223 * snd_soc_register_dai - Register a DAI with the ASoC core
3225 * @dai: DAI to register
3227 int snd_soc_register_dai(struct device *dev,
3228 struct snd_soc_dai_driver *dai_drv)
3230 struct snd_soc_dai *dai;
3232 dev_dbg(dev, "dai register %s\n", dev_name(dev));
3234 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3238 /* create DAI component name */
3239 dai->name = fmt_single_name(dev, &dai->id);
3240 if (dai->name == NULL) {
3246 dai->driver = dai_drv;
3247 if (!dai->driver->ops)
3248 dai->driver->ops = &null_dai_ops;
3250 mutex_lock(&client_mutex);
3251 list_add(&dai->list, &dai_list);
3252 snd_soc_instantiate_cards();
3253 mutex_unlock(&client_mutex);
3255 pr_debug("Registered DAI '%s'\n", dai->name);
3259 EXPORT_SYMBOL_GPL(snd_soc_register_dai);
3262 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3264 * @dai: DAI to unregister
3266 void snd_soc_unregister_dai(struct device *dev)
3268 struct snd_soc_dai *dai;
3270 list_for_each_entry(dai, &dai_list, list) {
3271 if (dev == dai->dev)
3277 mutex_lock(&client_mutex);
3278 list_del(&dai->list);
3279 mutex_unlock(&client_mutex);
3281 pr_debug("Unregistered DAI '%s'\n", dai->name);
3285 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
3288 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3290 * @dai: Array of DAIs to register
3291 * @count: Number of DAIs
3293 int snd_soc_register_dais(struct device *dev,
3294 struct snd_soc_dai_driver *dai_drv, size_t count)
3296 struct snd_soc_dai *dai;
3299 dev_dbg(dev, "dai register %s #%Zu\n", dev_name(dev), count);
3301 for (i = 0; i < count; i++) {
3303 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3309 /* create DAI component name */
3310 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3311 if (dai->name == NULL) {
3318 dai->driver = &dai_drv[i];
3319 if (dai->driver->id)
3320 dai->id = dai->driver->id;
3323 if (!dai->driver->ops)
3324 dai->driver->ops = &null_dai_ops;
3326 mutex_lock(&client_mutex);
3327 list_add(&dai->list, &dai_list);
3328 mutex_unlock(&client_mutex);
3330 pr_debug("Registered DAI '%s'\n", dai->name);
3333 mutex_lock(&client_mutex);
3334 snd_soc_instantiate_cards();
3335 mutex_unlock(&client_mutex);
3339 for (i--; i >= 0; i--)
3340 snd_soc_unregister_dai(dev);
3344 EXPORT_SYMBOL_GPL(snd_soc_register_dais);
3347 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3349 * @dai: Array of DAIs to unregister
3350 * @count: Number of DAIs
3352 void snd_soc_unregister_dais(struct device *dev, size_t count)
3356 for (i = 0; i < count; i++)
3357 snd_soc_unregister_dai(dev);
3359 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
3362 * snd_soc_register_platform - Register a platform with the ASoC core
3364 * @platform: platform to register
3366 int snd_soc_register_platform(struct device *dev,
3367 struct snd_soc_platform_driver *platform_drv)
3369 struct snd_soc_platform *platform;
3371 dev_dbg(dev, "platform register %s\n", dev_name(dev));
3373 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3374 if (platform == NULL)
3377 /* create platform component name */
3378 platform->name = fmt_single_name(dev, &platform->id);
3379 if (platform->name == NULL) {
3384 platform->dev = dev;
3385 platform->driver = platform_drv;
3386 platform->dapm.dev = dev;
3387 platform->dapm.platform = platform;
3388 platform->dapm.stream_event = platform_drv->stream_event;
3389 mutex_init(&platform->mutex);
3391 mutex_lock(&client_mutex);
3392 list_add(&platform->list, &platform_list);
3393 snd_soc_instantiate_cards();
3394 mutex_unlock(&client_mutex);
3396 pr_debug("Registered platform '%s'\n", platform->name);
3400 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3403 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3405 * @platform: platform to unregister
3407 void snd_soc_unregister_platform(struct device *dev)
3409 struct snd_soc_platform *platform;
3411 list_for_each_entry(platform, &platform_list, list) {
3412 if (dev == platform->dev)
3418 mutex_lock(&client_mutex);
3419 list_del(&platform->list);
3420 mutex_unlock(&client_mutex);
3422 pr_debug("Unregistered platform '%s'\n", platform->name);
3423 kfree(platform->name);
3426 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3428 static u64 codec_format_map[] = {
3429 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
3430 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
3431 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
3432 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
3433 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
3434 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
3435 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3436 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3437 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
3438 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
3439 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
3440 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
3441 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
3442 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
3443 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3444 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
3447 /* Fix up the DAI formats for endianness: codecs don't actually see
3448 * the endianness of the data but we're using the CPU format
3449 * definitions which do need to include endianness so we ensure that
3450 * codec DAIs always have both big and little endian variants set.
3452 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
3456 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
3457 if (stream->formats & codec_format_map[i])
3458 stream->formats |= codec_format_map[i];
3462 * snd_soc_register_codec - Register a codec with the ASoC core
3464 * @codec: codec to register
3466 int snd_soc_register_codec(struct device *dev,
3467 const struct snd_soc_codec_driver *codec_drv,
3468 struct snd_soc_dai_driver *dai_drv,
3472 struct snd_soc_codec *codec;
3475 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3477 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3481 /* create CODEC component name */
3482 codec->name = fmt_single_name(dev, &codec->id);
3483 if (codec->name == NULL) {
3488 if (codec_drv->compress_type)
3489 codec->compress_type = codec_drv->compress_type;
3491 codec->compress_type = SND_SOC_FLAT_COMPRESSION;
3493 codec->write = codec_drv->write;
3494 codec->read = codec_drv->read;
3495 codec->volatile_register = codec_drv->volatile_register;
3496 codec->readable_register = codec_drv->readable_register;
3497 codec->writable_register = codec_drv->writable_register;
3498 codec->ignore_pmdown_time = codec_drv->ignore_pmdown_time;
3499 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
3500 codec->dapm.dev = dev;
3501 codec->dapm.codec = codec;
3502 codec->dapm.seq_notifier = codec_drv->seq_notifier;
3503 codec->dapm.stream_event = codec_drv->stream_event;
3505 codec->driver = codec_drv;
3506 codec->num_dai = num_dai;
3507 mutex_init(&codec->mutex);
3509 /* allocate CODEC register cache */
3510 if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
3511 reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
3512 codec->reg_size = reg_size;
3513 /* it is necessary to make a copy of the default register cache
3514 * because in the case of using a compression type that requires
3515 * the default register cache to be marked as __devinitconst the
3516 * kernel might have freed the array by the time we initialize
3519 if (codec_drv->reg_cache_default) {
3520 codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
3521 reg_size, GFP_KERNEL);
3522 if (!codec->reg_def_copy) {
3529 if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
3530 if (!codec->volatile_register)
3531 codec->volatile_register = snd_soc_default_volatile_register;
3532 if (!codec->readable_register)
3533 codec->readable_register = snd_soc_default_readable_register;
3534 if (!codec->writable_register)
3535 codec->writable_register = snd_soc_default_writable_register;
3538 for (i = 0; i < num_dai; i++) {
3539 fixup_codec_formats(&dai_drv[i].playback);
3540 fixup_codec_formats(&dai_drv[i].capture);
3543 /* register any DAIs */
3545 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
3550 mutex_lock(&client_mutex);
3551 list_add(&codec->list, &codec_list);
3552 snd_soc_instantiate_cards();
3553 mutex_unlock(&client_mutex);
3555 pr_debug("Registered codec '%s'\n", codec->name);
3559 kfree(codec->reg_def_copy);
3560 codec->reg_def_copy = NULL;
3565 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
3568 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3570 * @codec: codec to unregister
3572 void snd_soc_unregister_codec(struct device *dev)
3574 struct snd_soc_codec *codec;
3577 list_for_each_entry(codec, &codec_list, list) {
3578 if (dev == codec->dev)
3585 for (i = 0; i < codec->num_dai; i++)
3586 snd_soc_unregister_dai(dev);
3588 mutex_lock(&client_mutex);
3589 list_del(&codec->list);
3590 mutex_unlock(&client_mutex);
3592 pr_debug("Unregistered codec '%s'\n", codec->name);
3594 snd_soc_cache_exit(codec);
3595 kfree(codec->reg_def_copy);
3599 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
3601 /* Retrieve a card's name from device tree */
3602 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
3603 const char *propname)
3605 struct device_node *np = card->dev->of_node;
3608 ret = of_property_read_string_index(np, propname, 0, &card->name);
3610 * EINVAL means the property does not exist. This is fine providing
3611 * card->name was previously set, which is checked later in
3612 * snd_soc_register_card.
3614 if (ret < 0 && ret != -EINVAL) {
3616 "Property '%s' could not be read: %d\n",
3623 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
3625 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
3626 const char *propname)
3628 struct device_node *np = card->dev->of_node;
3630 struct snd_soc_dapm_route *routes;
3633 num_routes = of_property_count_strings(np, propname);
3634 if (num_routes < 0 || num_routes & 1) {
3636 "Property '%s' does not exist or its length is not even\n",
3643 "Property '%s's length is zero\n",
3648 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
3652 "Could not allocate DAPM route table\n");
3656 for (i = 0; i < num_routes; i++) {
3657 ret = of_property_read_string_index(np, propname,
3658 2 * i, &routes[i].sink);
3661 "Property '%s' index %d could not be read: %d\n",
3662 propname, 2 * i, ret);
3665 ret = of_property_read_string_index(np, propname,
3666 (2 * i) + 1, &routes[i].source);
3669 "Property '%s' index %d could not be read: %d\n",
3670 propname, (2 * i) + 1, ret);
3675 card->num_dapm_routes = num_routes;
3676 card->dapm_routes = routes;
3680 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
3682 static int __init snd_soc_init(void)
3684 #ifdef CONFIG_DEBUG_FS
3685 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
3686 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
3687 pr_warn("ASoC: Failed to create debugfs directory\n");
3688 snd_soc_debugfs_root = NULL;
3691 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
3693 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3695 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
3697 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3699 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
3700 &platform_list_fops))
3701 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3704 snd_soc_util_init();
3706 return platform_driver_register(&soc_driver);
3708 module_init(snd_soc_init);
3710 static void __exit snd_soc_exit(void)
3712 snd_soc_util_exit();
3714 #ifdef CONFIG_DEBUG_FS
3715 debugfs_remove_recursive(snd_soc_debugfs_root);
3717 platform_driver_unregister(&soc_driver);
3719 module_exit(snd_soc_exit);
3721 /* Module information */
3722 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3723 MODULE_DESCRIPTION("ALSA SoC Core");
3724 MODULE_LICENSE("GPL");
3725 MODULE_ALIAS("platform:soc-audio");