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;
1077 struct snd_soc_dai *dai;
1079 platform->card = card;
1080 platform->dapm.card = card;
1082 if (!try_module_get(platform->dev->driver->owner))
1085 soc_init_platform_debugfs(platform);
1087 if (driver->dapm_widgets)
1088 snd_soc_dapm_new_controls(&platform->dapm,
1089 driver->dapm_widgets, driver->num_dapm_widgets);
1091 /* Create DAPM widgets for each DAI stream */
1092 list_for_each_entry(dai, &dai_list, list) {
1093 if (dai->dev != platform->dev)
1096 snd_soc_dapm_new_dai_widgets(&platform->dapm, dai);
1099 if (driver->probe) {
1100 ret = driver->probe(platform);
1102 dev_err(platform->dev,
1103 "asoc: failed to probe platform %s: %d\n",
1104 platform->name, ret);
1109 if (driver->controls)
1110 snd_soc_add_platform_controls(platform, driver->controls,
1111 driver->num_controls);
1112 if (driver->dapm_routes)
1113 snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
1114 driver->num_dapm_routes);
1116 /* mark platform as probed and add to card platform list */
1117 platform->probed = 1;
1118 list_add(&platform->card_list, &card->platform_dev_list);
1119 list_add(&platform->dapm.list, &card->dapm_list);
1124 soc_cleanup_platform_debugfs(platform);
1125 module_put(platform->dev->driver->owner);
1130 static void rtd_release(struct device *dev)
1135 static int soc_post_component_init(struct snd_soc_card *card,
1136 struct snd_soc_codec *codec,
1137 int num, int dailess)
1139 struct snd_soc_dai_link *dai_link = NULL;
1140 struct snd_soc_aux_dev *aux_dev = NULL;
1141 struct snd_soc_pcm_runtime *rtd;
1142 const char *temp, *name;
1146 dai_link = &card->dai_link[num];
1147 rtd = &card->rtd[num];
1148 name = dai_link->name;
1150 aux_dev = &card->aux_dev[num];
1151 rtd = &card->rtd_aux[num];
1152 name = aux_dev->name;
1156 /* Make sure all DAPM widgets are instantiated */
1157 snd_soc_dapm_new_widgets(&codec->dapm);
1159 /* machine controls, routes and widgets are not prefixed */
1160 temp = codec->name_prefix;
1161 codec->name_prefix = NULL;
1163 /* do machine specific initialization */
1164 if (!dailess && dai_link->init)
1165 ret = dai_link->init(rtd);
1166 else if (dailess && aux_dev->init)
1167 ret = aux_dev->init(&codec->dapm);
1169 dev_err(card->dev, "asoc: failed to init %s: %d\n", name, ret);
1172 codec->name_prefix = temp;
1174 /* register the rtd device */
1177 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1180 device_initialize(rtd->dev);
1181 rtd->dev->parent = card->dev;
1182 rtd->dev->release = rtd_release;
1183 rtd->dev->init_name = name;
1184 dev_set_drvdata(rtd->dev, rtd);
1185 mutex_init(&rtd->pcm_mutex);
1186 ret = device_add(rtd->dev);
1189 "asoc: failed to register runtime device: %d\n", ret);
1192 rtd->dev_registered = 1;
1194 /* add DAPM sysfs entries for this codec */
1195 ret = snd_soc_dapm_sys_add(rtd->dev);
1198 "asoc: failed to add codec dapm sysfs entries: %d\n",
1201 /* add codec sysfs entries */
1202 ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
1205 "asoc: failed to add codec sysfs files: %d\n", ret);
1210 static int soc_probe_dai_link(struct snd_soc_card *card, int num, int order)
1212 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1213 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1214 struct snd_soc_codec *codec = rtd->codec;
1215 struct snd_soc_platform *platform = rtd->platform;
1216 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
1219 dev_dbg(card->dev, "probe %s dai link %d late %d\n",
1220 card->name, num, order);
1222 /* config components */
1223 codec_dai->codec = codec;
1224 cpu_dai->platform = platform;
1225 codec_dai->card = card;
1226 cpu_dai->card = card;
1228 /* set default power off timeout */
1229 rtd->pmdown_time = pmdown_time;
1231 /* probe the cpu_dai */
1232 if (!cpu_dai->probed &&
1233 cpu_dai->driver->probe_order == order) {
1234 cpu_dai->dapm.card = card;
1235 if (!try_module_get(cpu_dai->dev->driver->owner))
1238 snd_soc_dapm_new_dai_widgets(&cpu_dai->dapm, cpu_dai);
1240 if (cpu_dai->driver->probe) {
1241 ret = cpu_dai->driver->probe(cpu_dai);
1243 pr_err("asoc: failed to probe CPU DAI %s: %d\n",
1244 cpu_dai->name, ret);
1245 module_put(cpu_dai->dev->driver->owner);
1249 cpu_dai->probed = 1;
1250 /* mark cpu_dai as probed and add to card dai list */
1251 list_add(&cpu_dai->card_list, &card->dai_dev_list);
1254 /* probe the CODEC */
1255 if (!codec->probed &&
1256 codec->driver->probe_order == order) {
1257 ret = soc_probe_codec(card, codec);
1262 /* probe the platform */
1263 if (!platform->probed &&
1264 platform->driver->probe_order == order) {
1265 ret = soc_probe_platform(card, platform);
1270 /* probe the CODEC DAI */
1271 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
1272 if (codec_dai->driver->probe) {
1273 ret = codec_dai->driver->probe(codec_dai);
1275 pr_err("asoc: failed to probe CODEC DAI %s: %d\n",
1276 codec_dai->name, ret);
1281 /* mark codec_dai as probed and add to card dai list */
1282 codec_dai->probed = 1;
1283 list_add(&codec_dai->card_list, &card->dai_dev_list);
1286 /* complete DAI probe during last probe */
1287 if (order != SND_SOC_COMP_ORDER_LAST)
1290 ret = soc_post_component_init(card, codec, num, 0);
1294 ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
1296 pr_warn("asoc: failed to add pmdown_time sysfs:%d\n", ret);
1298 /* create the pcm */
1299 ret = soc_new_pcm(rtd, num);
1301 pr_err("asoc: can't create pcm %s :%d\n",
1302 dai_link->stream_name, ret);
1306 /* add platform data for AC97 devices */
1307 if (rtd->codec_dai->driver->ac97_control)
1308 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1313 #ifdef CONFIG_SND_SOC_AC97_BUS
1314 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1318 /* Only instantiate AC97 if not already done by the adaptor
1319 * for the generic AC97 subsystem.
1321 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
1323 * It is possible that the AC97 device is already registered to
1324 * the device subsystem. This happens when the device is created
1325 * via snd_ac97_mixer(). Currently only SoC codec that does so
1326 * is the generic AC97 glue but others migh emerge.
1328 * In those cases we don't try to register the device again.
1330 if (!rtd->codec->ac97_created)
1333 ret = soc_ac97_dev_register(rtd->codec);
1335 pr_err("asoc: AC97 device register failed:%d\n", ret);
1339 rtd->codec->ac97_registered = 1;
1344 static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1346 if (codec->ac97_registered) {
1347 soc_ac97_dev_unregister(codec);
1348 codec->ac97_registered = 0;
1353 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1355 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1356 struct snd_soc_codec *codec;
1359 /* find CODEC from registered CODECs*/
1360 list_for_each_entry(codec, &codec_list, list) {
1361 if (!strcmp(codec->name, aux_dev->codec_name)) {
1362 if (codec->probed) {
1364 "asoc: codec already probed");
1371 /* codec not found */
1372 dev_err(card->dev, "asoc: codec %s not found", aux_dev->codec_name);
1376 ret = soc_probe_codec(card, codec);
1380 ret = soc_post_component_init(card, codec, num, 1);
1386 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1388 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1389 struct snd_soc_codec *codec = rtd->codec;
1391 /* unregister the rtd device */
1392 if (rtd->dev_registered) {
1393 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1394 device_del(rtd->dev);
1395 rtd->dev_registered = 0;
1398 if (codec && codec->probed)
1399 soc_remove_codec(codec);
1402 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
1403 enum snd_soc_compress_type compress_type)
1407 if (codec->cache_init)
1410 /* override the compress_type if necessary */
1411 if (compress_type && codec->compress_type != compress_type)
1412 codec->compress_type = compress_type;
1413 ret = snd_soc_cache_init(codec);
1415 dev_err(codec->dev, "Failed to set cache compression type: %d\n",
1419 codec->cache_init = 1;
1423 static void snd_soc_instantiate_card(struct snd_soc_card *card)
1425 struct snd_soc_codec *codec;
1426 struct snd_soc_codec_conf *codec_conf;
1427 enum snd_soc_compress_type compress_type;
1428 struct snd_soc_dai_link *dai_link;
1431 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1433 if (card->instantiated) {
1434 mutex_unlock(&card->mutex);
1439 for (i = 0; i < card->num_links; i++)
1440 soc_bind_dai_link(card, i);
1442 /* bind completed ? */
1443 if (card->num_rtd != card->num_links) {
1444 mutex_unlock(&card->mutex);
1448 /* initialize the register cache for each available codec */
1449 list_for_each_entry(codec, &codec_list, list) {
1450 if (codec->cache_init)
1452 /* by default we don't override the compress_type */
1454 /* check to see if we need to override the compress_type */
1455 for (i = 0; i < card->num_configs; ++i) {
1456 codec_conf = &card->codec_conf[i];
1457 if (!strcmp(codec->name, codec_conf->dev_name)) {
1458 compress_type = codec_conf->compress_type;
1459 if (compress_type && compress_type
1460 != codec->compress_type)
1464 ret = snd_soc_init_codec_cache(codec, compress_type);
1466 mutex_unlock(&card->mutex);
1471 /* card bind complete so register a sound card */
1472 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1473 card->owner, 0, &card->snd_card);
1475 pr_err("asoc: can't create sound card for card %s: %d\n",
1477 mutex_unlock(&card->mutex);
1480 card->snd_card->dev = card->dev;
1482 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1483 card->dapm.dev = card->dev;
1484 card->dapm.card = card;
1485 list_add(&card->dapm.list, &card->dapm_list);
1487 #ifdef CONFIG_DEBUG_FS
1488 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1491 #ifdef CONFIG_PM_SLEEP
1492 /* deferred resume work */
1493 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1496 if (card->dapm_widgets)
1497 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1498 card->num_dapm_widgets);
1500 /* initialise the sound card only once */
1502 ret = card->probe(card);
1504 goto card_probe_error;
1507 /* early DAI link probe */
1508 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1510 for (i = 0; i < card->num_links; i++) {
1511 ret = soc_probe_dai_link(card, i, order);
1513 pr_err("asoc: failed to instantiate card %s: %d\n",
1520 for (i = 0; i < card->num_aux_devs; i++) {
1521 ret = soc_probe_aux_dev(card, i);
1523 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1525 goto probe_aux_dev_err;
1529 snd_soc_dapm_link_dai_widgets(card);
1532 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1534 if (card->dapm_routes)
1535 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1536 card->num_dapm_routes);
1538 snd_soc_dapm_new_widgets(&card->dapm);
1540 for (i = 0; i < card->num_links; i++) {
1541 dai_link = &card->dai_link[i];
1543 if (dai_link->dai_fmt) {
1544 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1546 if (ret != 0 && ret != -ENOTSUPP)
1547 dev_warn(card->rtd[i].codec_dai->dev,
1548 "Failed to set DAI format: %d\n",
1551 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1553 if (ret != 0 && ret != -ENOTSUPP)
1554 dev_warn(card->rtd[i].cpu_dai->dev,
1555 "Failed to set DAI format: %d\n",
1560 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1562 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1563 "%s", card->long_name ? card->long_name : card->name);
1564 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1565 "%s", card->driver_name ? card->driver_name : card->name);
1566 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1567 switch (card->snd_card->driver[i]) {
1573 if (!isalnum(card->snd_card->driver[i]))
1574 card->snd_card->driver[i] = '_';
1579 if (card->late_probe) {
1580 ret = card->late_probe(card);
1582 dev_err(card->dev, "%s late_probe() failed: %d\n",
1584 goto probe_aux_dev_err;
1588 snd_soc_dapm_new_widgets(&card->dapm);
1590 if (card->fully_routed)
1591 list_for_each_entry(codec, &card->codec_dev_list, card_list)
1592 snd_soc_dapm_auto_nc_codec_pins(codec);
1594 ret = snd_card_register(card->snd_card);
1596 pr_err("asoc: failed to register soundcard for %s: %d\n",
1598 goto probe_aux_dev_err;
1601 #ifdef CONFIG_SND_SOC_AC97_BUS
1602 /* register any AC97 codecs */
1603 for (i = 0; i < card->num_rtd; i++) {
1604 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1606 pr_err("asoc: failed to register AC97 %s: %d\n",
1609 soc_unregister_ac97_dai_link(card->rtd[i].codec);
1610 goto probe_aux_dev_err;
1615 card->instantiated = 1;
1616 snd_soc_dapm_sync(&card->dapm);
1617 mutex_unlock(&card->mutex);
1621 for (i = 0; i < card->num_aux_devs; i++)
1622 soc_remove_aux_dev(card, i);
1625 soc_remove_dai_links(card);
1631 snd_card_free(card->snd_card);
1633 mutex_unlock(&card->mutex);
1637 * Attempt to initialise any uninitialised cards. Must be called with
1640 static void snd_soc_instantiate_cards(void)
1642 struct snd_soc_card *card;
1643 list_for_each_entry(card, &card_list, list)
1644 snd_soc_instantiate_card(card);
1647 /* probes a new socdev */
1648 static int soc_probe(struct platform_device *pdev)
1650 struct snd_soc_card *card = platform_get_drvdata(pdev);
1654 * no card, so machine driver should be registering card
1655 * we should not be here in that case so ret error
1660 dev_warn(&pdev->dev,
1661 "ASoC machine %s should use snd_soc_register_card()\n",
1664 /* Bodge while we unpick instantiation */
1665 card->dev = &pdev->dev;
1667 ret = snd_soc_register_card(card);
1669 dev_err(&pdev->dev, "Failed to register card\n");
1676 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1680 /* make sure any delayed work runs */
1681 for (i = 0; i < card->num_rtd; i++) {
1682 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1683 flush_delayed_work_sync(&rtd->delayed_work);
1686 /* remove auxiliary devices */
1687 for (i = 0; i < card->num_aux_devs; i++)
1688 soc_remove_aux_dev(card, i);
1690 /* remove and free each DAI */
1691 soc_remove_dai_links(card);
1693 soc_cleanup_card_debugfs(card);
1695 /* remove the card */
1699 snd_soc_dapm_free(&card->dapm);
1701 snd_card_free(card->snd_card);
1706 /* removes a socdev */
1707 static int soc_remove(struct platform_device *pdev)
1709 struct snd_soc_card *card = platform_get_drvdata(pdev);
1711 snd_soc_unregister_card(card);
1715 int snd_soc_poweroff(struct device *dev)
1717 struct snd_soc_card *card = dev_get_drvdata(dev);
1720 if (!card->instantiated)
1723 /* Flush out pmdown_time work - we actually do want to run it
1724 * now, we're shutting down so no imminent restart. */
1725 for (i = 0; i < card->num_rtd; i++) {
1726 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1727 flush_delayed_work_sync(&rtd->delayed_work);
1730 snd_soc_dapm_shutdown(card);
1734 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
1736 const struct dev_pm_ops snd_soc_pm_ops = {
1737 .suspend = snd_soc_suspend,
1738 .resume = snd_soc_resume,
1739 .freeze = snd_soc_suspend,
1740 .thaw = snd_soc_resume,
1741 .poweroff = snd_soc_poweroff,
1742 .restore = snd_soc_resume,
1744 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
1746 /* ASoC platform driver */
1747 static struct platform_driver soc_driver = {
1749 .name = "soc-audio",
1750 .owner = THIS_MODULE,
1751 .pm = &snd_soc_pm_ops,
1754 .remove = soc_remove,
1758 * snd_soc_codec_volatile_register: Report if a register is volatile.
1760 * @codec: CODEC to query.
1761 * @reg: Register to query.
1763 * Boolean function indiciating if a CODEC register is volatile.
1765 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
1768 if (codec->volatile_register)
1769 return codec->volatile_register(codec, reg);
1773 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
1776 * snd_soc_codec_readable_register: Report if a register is readable.
1778 * @codec: CODEC to query.
1779 * @reg: Register to query.
1781 * Boolean function indicating if a CODEC register is readable.
1783 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
1786 if (codec->readable_register)
1787 return codec->readable_register(codec, reg);
1791 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
1794 * snd_soc_codec_writable_register: Report if a register is writable.
1796 * @codec: CODEC to query.
1797 * @reg: Register to query.
1799 * Boolean function indicating if a CODEC register is writable.
1801 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
1804 if (codec->writable_register)
1805 return codec->writable_register(codec, reg);
1809 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
1811 int snd_soc_platform_read(struct snd_soc_platform *platform,
1816 if (!platform->driver->read) {
1817 dev_err(platform->dev, "platform has no read back\n");
1821 ret = platform->driver->read(platform, reg);
1822 dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
1823 trace_snd_soc_preg_read(platform, reg, ret);
1827 EXPORT_SYMBOL_GPL(snd_soc_platform_read);
1829 int snd_soc_platform_write(struct snd_soc_platform *platform,
1830 unsigned int reg, unsigned int val)
1832 if (!platform->driver->write) {
1833 dev_err(platform->dev, "platform has no write back\n");
1837 dev_dbg(platform->dev, "write %x = %x\n", reg, val);
1838 trace_snd_soc_preg_write(platform, reg, val);
1839 return platform->driver->write(platform, reg, val);
1841 EXPORT_SYMBOL_GPL(snd_soc_platform_write);
1844 * snd_soc_new_ac97_codec - initailise AC97 device
1845 * @codec: audio codec
1846 * @ops: AC97 bus operations
1847 * @num: AC97 codec number
1849 * Initialises AC97 codec resources for use by ad-hoc devices only.
1851 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
1852 struct snd_ac97_bus_ops *ops, int num)
1854 mutex_lock(&codec->mutex);
1856 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
1857 if (codec->ac97 == NULL) {
1858 mutex_unlock(&codec->mutex);
1862 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
1863 if (codec->ac97->bus == NULL) {
1866 mutex_unlock(&codec->mutex);
1870 codec->ac97->bus->ops = ops;
1871 codec->ac97->num = num;
1874 * Mark the AC97 device to be created by us. This way we ensure that the
1875 * device will be registered with the device subsystem later on.
1877 codec->ac97_created = 1;
1879 mutex_unlock(&codec->mutex);
1882 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
1885 * snd_soc_free_ac97_codec - free AC97 codec device
1886 * @codec: audio codec
1888 * Frees AC97 codec device resources.
1890 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
1892 mutex_lock(&codec->mutex);
1893 #ifdef CONFIG_SND_SOC_AC97_BUS
1894 soc_unregister_ac97_dai_link(codec);
1896 kfree(codec->ac97->bus);
1899 codec->ac97_created = 0;
1900 mutex_unlock(&codec->mutex);
1902 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
1904 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
1908 ret = codec->read(codec, reg);
1909 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
1910 trace_snd_soc_reg_read(codec, reg, ret);
1914 EXPORT_SYMBOL_GPL(snd_soc_read);
1916 unsigned int snd_soc_write(struct snd_soc_codec *codec,
1917 unsigned int reg, unsigned int val)
1919 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
1920 trace_snd_soc_reg_write(codec, reg, val);
1921 return codec->write(codec, reg, val);
1923 EXPORT_SYMBOL_GPL(snd_soc_write);
1925 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
1926 unsigned int reg, const void *data, size_t len)
1928 return codec->bulk_write_raw(codec, reg, data, len);
1930 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw);
1933 * snd_soc_update_bits - update codec register bits
1934 * @codec: audio codec
1935 * @reg: codec register
1936 * @mask: register mask
1939 * Writes new register value.
1941 * Returns 1 for change, 0 for no change, or negative error code.
1943 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
1944 unsigned int mask, unsigned int value)
1947 unsigned int old, new;
1950 if (codec->using_regmap) {
1951 ret = regmap_update_bits_check(codec->control_data, reg,
1952 mask, value, &change);
1954 ret = snd_soc_read(codec, reg);
1959 new = (old & ~mask) | (value & mask);
1960 change = old != new;
1962 ret = snd_soc_write(codec, reg, new);
1970 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
1973 * snd_soc_update_bits_locked - update codec register bits
1974 * @codec: audio codec
1975 * @reg: codec register
1976 * @mask: register mask
1979 * Writes new register value, and takes the codec mutex.
1981 * Returns 1 for change else 0.
1983 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
1984 unsigned short reg, unsigned int mask,
1989 mutex_lock(&codec->mutex);
1990 change = snd_soc_update_bits(codec, reg, mask, value);
1991 mutex_unlock(&codec->mutex);
1995 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
1998 * snd_soc_test_bits - test register for change
1999 * @codec: audio codec
2000 * @reg: codec register
2001 * @mask: register mask
2004 * Tests a register with a new value and checks if the new value is
2005 * different from the old value.
2007 * Returns 1 for change else 0.
2009 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
2010 unsigned int mask, unsigned int value)
2013 unsigned int old, new;
2015 old = snd_soc_read(codec, reg);
2016 new = (old & ~mask) | value;
2017 change = old != new;
2021 EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2024 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2025 * @substream: the pcm substream
2026 * @hw: the hardware parameters
2028 * Sets the substream runtime hardware parameters.
2030 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
2031 const struct snd_pcm_hardware *hw)
2033 struct snd_pcm_runtime *runtime = substream->runtime;
2034 runtime->hw.info = hw->info;
2035 runtime->hw.formats = hw->formats;
2036 runtime->hw.period_bytes_min = hw->period_bytes_min;
2037 runtime->hw.period_bytes_max = hw->period_bytes_max;
2038 runtime->hw.periods_min = hw->periods_min;
2039 runtime->hw.periods_max = hw->periods_max;
2040 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
2041 runtime->hw.fifo_size = hw->fifo_size;
2044 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
2047 * snd_soc_cnew - create new control
2048 * @_template: control template
2049 * @data: control private data
2050 * @long_name: control long name
2051 * @prefix: control name prefix
2053 * Create a new mixer control from a template control.
2055 * Returns 0 for success, else error.
2057 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2058 void *data, const char *long_name,
2061 struct snd_kcontrol_new template;
2062 struct snd_kcontrol *kcontrol;
2066 memcpy(&template, _template, sizeof(template));
2070 long_name = template.name;
2073 name_len = strlen(long_name) + strlen(prefix) + 2;
2074 name = kmalloc(name_len, GFP_KERNEL);
2078 snprintf(name, name_len, "%s %s", prefix, long_name);
2080 template.name = name;
2082 template.name = long_name;
2085 kcontrol = snd_ctl_new1(&template, data);
2091 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2093 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2094 const struct snd_kcontrol_new *controls, int num_controls,
2095 const char *prefix, void *data)
2099 for (i = 0; i < num_controls; i++) {
2100 const struct snd_kcontrol_new *control = &controls[i];
2101 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2102 control->name, prefix));
2104 dev_err(dev, "Failed to add %s: %d\n", control->name, err);
2113 * snd_soc_add_codec_controls - add an array of controls to a codec.
2114 * Convenience function to add a list of controls. Many codecs were
2115 * duplicating this code.
2117 * @codec: codec to add controls to
2118 * @controls: array of controls to add
2119 * @num_controls: number of elements in the array
2121 * Return 0 for success, else error.
2123 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2124 const struct snd_kcontrol_new *controls, int num_controls)
2126 struct snd_card *card = codec->card->snd_card;
2128 return snd_soc_add_controls(card, codec->dev, controls, num_controls,
2129 codec->name_prefix, codec);
2131 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2134 * snd_soc_add_platform_controls - add an array of controls to a platform.
2135 * Convenience function to add a list of controls.
2137 * @platform: platform to add controls to
2138 * @controls: array of controls to add
2139 * @num_controls: number of elements in the array
2141 * Return 0 for success, else error.
2143 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2144 const struct snd_kcontrol_new *controls, int num_controls)
2146 struct snd_card *card = platform->card->snd_card;
2148 return snd_soc_add_controls(card, platform->dev, controls, num_controls,
2151 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2154 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2155 * Convenience function to add a list of controls.
2157 * @soc_card: SoC card to add controls to
2158 * @controls: array of controls to add
2159 * @num_controls: number of elements in the array
2161 * Return 0 for success, else error.
2163 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2164 const struct snd_kcontrol_new *controls, int num_controls)
2166 struct snd_card *card = soc_card->snd_card;
2168 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2171 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2174 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2175 * Convienience function to add a list of controls.
2177 * @dai: DAI to add controls to
2178 * @controls: array of controls to add
2179 * @num_controls: number of elements in the array
2181 * Return 0 for success, else error.
2183 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2184 const struct snd_kcontrol_new *controls, int num_controls)
2186 struct snd_card *card = dai->card->snd_card;
2188 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2191 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2194 * snd_soc_info_enum_double - enumerated double mixer info callback
2195 * @kcontrol: mixer control
2196 * @uinfo: control element information
2198 * Callback to provide information about a double enumerated
2201 * Returns 0 for success.
2203 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2204 struct snd_ctl_elem_info *uinfo)
2206 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2208 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2209 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2210 uinfo->value.enumerated.items = e->max;
2212 if (uinfo->value.enumerated.item > e->max - 1)
2213 uinfo->value.enumerated.item = e->max - 1;
2214 strcpy(uinfo->value.enumerated.name,
2215 e->texts[uinfo->value.enumerated.item]);
2218 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2221 * snd_soc_get_enum_double - enumerated double mixer get callback
2222 * @kcontrol: mixer control
2223 * @ucontrol: control element information
2225 * Callback to get the value of a double enumerated mixer.
2227 * Returns 0 for success.
2229 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2230 struct snd_ctl_elem_value *ucontrol)
2232 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2233 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2234 unsigned int val, bitmask;
2236 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
2238 val = snd_soc_read(codec, e->reg);
2239 ucontrol->value.enumerated.item[0]
2240 = (val >> e->shift_l) & (bitmask - 1);
2241 if (e->shift_l != e->shift_r)
2242 ucontrol->value.enumerated.item[1] =
2243 (val >> e->shift_r) & (bitmask - 1);
2247 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2250 * snd_soc_put_enum_double - enumerated double mixer put callback
2251 * @kcontrol: mixer control
2252 * @ucontrol: control element information
2254 * Callback to set the value of a double enumerated mixer.
2256 * Returns 0 for success.
2258 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2259 struct snd_ctl_elem_value *ucontrol)
2261 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2262 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2264 unsigned int mask, bitmask;
2266 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
2268 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2270 val = ucontrol->value.enumerated.item[0] << e->shift_l;
2271 mask = (bitmask - 1) << e->shift_l;
2272 if (e->shift_l != e->shift_r) {
2273 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2275 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2276 mask |= (bitmask - 1) << e->shift_r;
2279 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2281 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2284 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2285 * @kcontrol: mixer control
2286 * @ucontrol: control element information
2288 * Callback to get the value of a double semi enumerated mixer.
2290 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2291 * used for handling bitfield coded enumeration for example.
2293 * Returns 0 for success.
2295 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
2296 struct snd_ctl_elem_value *ucontrol)
2298 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2299 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2300 unsigned int reg_val, val, mux;
2302 reg_val = snd_soc_read(codec, e->reg);
2303 val = (reg_val >> e->shift_l) & e->mask;
2304 for (mux = 0; mux < e->max; mux++) {
2305 if (val == e->values[mux])
2308 ucontrol->value.enumerated.item[0] = mux;
2309 if (e->shift_l != e->shift_r) {
2310 val = (reg_val >> e->shift_r) & e->mask;
2311 for (mux = 0; mux < e->max; mux++) {
2312 if (val == e->values[mux])
2315 ucontrol->value.enumerated.item[1] = mux;
2320 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
2323 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2324 * @kcontrol: mixer control
2325 * @ucontrol: control element information
2327 * Callback to set the value of a double semi enumerated mixer.
2329 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2330 * used for handling bitfield coded enumeration for example.
2332 * Returns 0 for success.
2334 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
2335 struct snd_ctl_elem_value *ucontrol)
2337 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2338 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2342 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2344 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2345 mask = e->mask << e->shift_l;
2346 if (e->shift_l != e->shift_r) {
2347 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2349 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2350 mask |= e->mask << e->shift_r;
2353 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2355 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
2358 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2359 * @kcontrol: mixer control
2360 * @uinfo: control element information
2362 * Callback to provide information about an external enumerated
2365 * Returns 0 for success.
2367 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
2368 struct snd_ctl_elem_info *uinfo)
2370 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2372 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2374 uinfo->value.enumerated.items = e->max;
2376 if (uinfo->value.enumerated.item > e->max - 1)
2377 uinfo->value.enumerated.item = e->max - 1;
2378 strcpy(uinfo->value.enumerated.name,
2379 e->texts[uinfo->value.enumerated.item]);
2382 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);
2385 * snd_soc_info_volsw_ext - external single mixer info callback
2386 * @kcontrol: mixer control
2387 * @uinfo: control element information
2389 * Callback to provide information about a single external mixer control.
2391 * Returns 0 for success.
2393 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
2394 struct snd_ctl_elem_info *uinfo)
2396 int max = kcontrol->private_value;
2398 if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
2399 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2401 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2404 uinfo->value.integer.min = 0;
2405 uinfo->value.integer.max = max;
2408 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);
2411 * snd_soc_info_volsw - single mixer info callback
2412 * @kcontrol: mixer control
2413 * @uinfo: control element information
2415 * Callback to provide information about a single mixer control, or a double
2416 * mixer control that spans 2 registers.
2418 * Returns 0 for success.
2420 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2421 struct snd_ctl_elem_info *uinfo)
2423 struct soc_mixer_control *mc =
2424 (struct soc_mixer_control *)kcontrol->private_value;
2427 if (!mc->platform_max)
2428 mc->platform_max = mc->max;
2429 platform_max = mc->platform_max;
2431 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2432 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2434 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2436 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2437 uinfo->value.integer.min = 0;
2438 uinfo->value.integer.max = platform_max;
2441 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2444 * snd_soc_get_volsw - single mixer get callback
2445 * @kcontrol: mixer control
2446 * @ucontrol: control element information
2448 * Callback to get the value of a single mixer control, or a double mixer
2449 * control that spans 2 registers.
2451 * Returns 0 for success.
2453 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2454 struct snd_ctl_elem_value *ucontrol)
2456 struct soc_mixer_control *mc =
2457 (struct soc_mixer_control *)kcontrol->private_value;
2458 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2459 unsigned int reg = mc->reg;
2460 unsigned int reg2 = mc->rreg;
2461 unsigned int shift = mc->shift;
2462 unsigned int rshift = mc->rshift;
2464 unsigned int mask = (1 << fls(max)) - 1;
2465 unsigned int invert = mc->invert;
2467 ucontrol->value.integer.value[0] =
2468 (snd_soc_read(codec, reg) >> shift) & mask;
2470 ucontrol->value.integer.value[0] =
2471 max - ucontrol->value.integer.value[0];
2473 if (snd_soc_volsw_is_stereo(mc)) {
2475 ucontrol->value.integer.value[1] =
2476 (snd_soc_read(codec, reg) >> rshift) & mask;
2478 ucontrol->value.integer.value[1] =
2479 (snd_soc_read(codec, reg2) >> shift) & mask;
2481 ucontrol->value.integer.value[1] =
2482 max - ucontrol->value.integer.value[1];
2487 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2490 * snd_soc_put_volsw - single mixer put callback
2491 * @kcontrol: mixer control
2492 * @ucontrol: control element information
2494 * Callback to set the value of a single mixer control, or a double mixer
2495 * control that spans 2 registers.
2497 * Returns 0 for success.
2499 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2500 struct snd_ctl_elem_value *ucontrol)
2502 struct soc_mixer_control *mc =
2503 (struct soc_mixer_control *)kcontrol->private_value;
2504 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2505 unsigned int reg = mc->reg;
2506 unsigned int reg2 = mc->rreg;
2507 unsigned int shift = mc->shift;
2508 unsigned int rshift = mc->rshift;
2510 unsigned int mask = (1 << fls(max)) - 1;
2511 unsigned int invert = mc->invert;
2514 unsigned int val2 = 0;
2515 unsigned int val, val_mask;
2517 val = (ucontrol->value.integer.value[0] & mask);
2520 val_mask = mask << shift;
2522 if (snd_soc_volsw_is_stereo(mc)) {
2523 val2 = (ucontrol->value.integer.value[1] & mask);
2527 val_mask |= mask << rshift;
2528 val |= val2 << rshift;
2530 val2 = val2 << shift;
2534 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2539 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2543 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2546 * snd_soc_info_volsw_s8 - signed mixer info callback
2547 * @kcontrol: mixer control
2548 * @uinfo: control element information
2550 * Callback to provide information about a signed mixer control.
2552 * Returns 0 for success.
2554 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2555 struct snd_ctl_elem_info *uinfo)
2557 struct soc_mixer_control *mc =
2558 (struct soc_mixer_control *)kcontrol->private_value;
2562 if (!mc->platform_max)
2563 mc->platform_max = mc->max;
2564 platform_max = mc->platform_max;
2566 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2568 uinfo->value.integer.min = 0;
2569 uinfo->value.integer.max = platform_max - min;
2572 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2575 * snd_soc_get_volsw_s8 - signed mixer get callback
2576 * @kcontrol: mixer control
2577 * @ucontrol: control element information
2579 * Callback to get the value of a signed mixer control.
2581 * Returns 0 for success.
2583 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2584 struct snd_ctl_elem_value *ucontrol)
2586 struct soc_mixer_control *mc =
2587 (struct soc_mixer_control *)kcontrol->private_value;
2588 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2589 unsigned int reg = mc->reg;
2591 int val = snd_soc_read(codec, reg);
2593 ucontrol->value.integer.value[0] =
2594 ((signed char)(val & 0xff))-min;
2595 ucontrol->value.integer.value[1] =
2596 ((signed char)((val >> 8) & 0xff))-min;
2599 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2602 * snd_soc_put_volsw_sgn - signed mixer put callback
2603 * @kcontrol: mixer control
2604 * @ucontrol: control element information
2606 * Callback to set the value of a signed mixer control.
2608 * Returns 0 for success.
2610 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2611 struct snd_ctl_elem_value *ucontrol)
2613 struct soc_mixer_control *mc =
2614 (struct soc_mixer_control *)kcontrol->private_value;
2615 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2616 unsigned int reg = mc->reg;
2620 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2621 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2623 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
2625 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2628 * snd_soc_limit_volume - Set new limit to an existing volume control.
2630 * @codec: where to look for the control
2631 * @name: Name of the control
2632 * @max: new maximum limit
2634 * Return 0 for success, else error.
2636 int snd_soc_limit_volume(struct snd_soc_codec *codec,
2637 const char *name, int max)
2639 struct snd_card *card = codec->card->snd_card;
2640 struct snd_kcontrol *kctl;
2641 struct soc_mixer_control *mc;
2645 /* Sanity check for name and max */
2646 if (unlikely(!name || max <= 0))
2649 list_for_each_entry(kctl, &card->controls, list) {
2650 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
2656 mc = (struct soc_mixer_control *)kctl->private_value;
2657 if (max <= mc->max) {
2658 mc->platform_max = max;
2664 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
2667 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2668 * mixer info callback
2669 * @kcontrol: mixer control
2670 * @uinfo: control element information
2672 * Returns 0 for success.
2674 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2675 struct snd_ctl_elem_info *uinfo)
2677 struct soc_mixer_control *mc =
2678 (struct soc_mixer_control *)kcontrol->private_value;
2682 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2684 uinfo->value.integer.min = 0;
2685 uinfo->value.integer.max = max-min;
2689 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx);
2692 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
2693 * mixer get callback
2694 * @kcontrol: mixer control
2695 * @uinfo: control element information
2697 * Returns 0 for success.
2699 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2700 struct snd_ctl_elem_value *ucontrol)
2702 struct soc_mixer_control *mc =
2703 (struct soc_mixer_control *)kcontrol->private_value;
2704 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2705 unsigned int mask = (1<<mc->shift)-1;
2707 int val = snd_soc_read(codec, mc->reg) & mask;
2708 int valr = snd_soc_read(codec, mc->rreg) & mask;
2710 ucontrol->value.integer.value[0] = ((val & 0xff)-min) & mask;
2711 ucontrol->value.integer.value[1] = ((valr & 0xff)-min) & mask;
2714 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx);
2717 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
2718 * mixer put callback
2719 * @kcontrol: mixer control
2720 * @uinfo: control element information
2722 * Returns 0 for success.
2724 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2725 struct snd_ctl_elem_value *ucontrol)
2727 struct soc_mixer_control *mc =
2728 (struct soc_mixer_control *)kcontrol->private_value;
2729 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2730 unsigned int mask = (1<<mc->shift)-1;
2733 unsigned int val, valr, oval, ovalr;
2735 val = ((ucontrol->value.integer.value[0]+min) & 0xff);
2737 valr = ((ucontrol->value.integer.value[1]+min) & 0xff);
2740 oval = snd_soc_read(codec, mc->reg) & mask;
2741 ovalr = snd_soc_read(codec, mc->rreg) & mask;
2745 ret = snd_soc_write(codec, mc->reg, val);
2749 if (ovalr != valr) {
2750 ret = snd_soc_write(codec, mc->rreg, valr);
2757 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx);
2759 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
2760 struct snd_ctl_elem_info *uinfo)
2762 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2763 struct soc_bytes *params = (void *)kcontrol->private_value;
2765 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
2766 uinfo->count = params->num_regs * codec->val_bytes;
2770 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
2772 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
2773 struct snd_ctl_elem_value *ucontrol)
2775 struct soc_bytes *params = (void *)kcontrol->private_value;
2776 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2779 if (codec->using_regmap)
2780 ret = regmap_raw_read(codec->control_data, params->base,
2781 ucontrol->value.bytes.data,
2782 params->num_regs * codec->val_bytes);
2786 /* Hide any masked bytes to ensure consistent data reporting */
2787 if (ret == 0 && params->mask) {
2788 switch (codec->val_bytes) {
2790 ucontrol->value.bytes.data[0] &= ~params->mask;
2793 ((u16 *)(&ucontrol->value.bytes.data))[0]
2797 ((u32 *)(&ucontrol->value.bytes.data))[0]
2807 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
2809 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
2810 struct snd_ctl_elem_value *ucontrol)
2812 struct soc_bytes *params = (void *)kcontrol->private_value;
2813 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2818 if (!codec->using_regmap)
2821 data = ucontrol->value.bytes.data;
2822 len = params->num_regs * codec->val_bytes;
2825 * If we've got a mask then we need to preserve the register
2826 * bits. We shouldn't modify the incoming data so take a
2830 ret = regmap_read(codec->control_data, params->base, &val);
2834 val &= params->mask;
2836 data = kmemdup(data, len, GFP_KERNEL);
2840 switch (codec->val_bytes) {
2842 ((u8 *)data)[0] &= ~params->mask;
2843 ((u8 *)data)[0] |= val;
2846 ((u16 *)data)[0] &= cpu_to_be16(~params->mask);
2847 ((u16 *)data)[0] |= cpu_to_be16(val);
2850 ((u32 *)data)[0] &= cpu_to_be32(~params->mask);
2851 ((u32 *)data)[0] |= cpu_to_be32(val);
2858 ret = regmap_raw_write(codec->control_data, params->base,
2866 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
2869 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2871 * @clk_id: DAI specific clock ID
2872 * @freq: new clock frequency in Hz
2873 * @dir: new clock direction - input/output.
2875 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2877 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
2878 unsigned int freq, int dir)
2880 if (dai->driver && dai->driver->ops->set_sysclk)
2881 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
2882 else if (dai->codec && dai->codec->driver->set_sysclk)
2883 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
2888 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
2891 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2893 * @clk_id: DAI specific clock ID
2894 * @source: Source for the clock
2895 * @freq: new clock frequency in Hz
2896 * @dir: new clock direction - input/output.
2898 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2900 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
2901 int source, unsigned int freq, int dir)
2903 if (codec->driver->set_sysclk)
2904 return codec->driver->set_sysclk(codec, clk_id, source,
2909 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
2912 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2914 * @div_id: DAI specific clock divider ID
2915 * @div: new clock divisor.
2917 * Configures the clock dividers. This is used to derive the best DAI bit and
2918 * frame clocks from the system or master clock. It's best to set the DAI bit
2919 * and frame clocks as low as possible to save system power.
2921 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
2922 int div_id, int div)
2924 if (dai->driver && dai->driver->ops->set_clkdiv)
2925 return dai->driver->ops->set_clkdiv(dai, div_id, div);
2929 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
2932 * snd_soc_dai_set_pll - configure DAI PLL.
2934 * @pll_id: DAI specific PLL ID
2935 * @source: DAI specific source for the PLL
2936 * @freq_in: PLL input clock frequency in Hz
2937 * @freq_out: requested PLL output clock frequency in Hz
2939 * Configures and enables PLL to generate output clock based on input clock.
2941 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
2942 unsigned int freq_in, unsigned int freq_out)
2944 if (dai->driver && dai->driver->ops->set_pll)
2945 return dai->driver->ops->set_pll(dai, pll_id, source,
2947 else if (dai->codec && dai->codec->driver->set_pll)
2948 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
2953 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
2956 * snd_soc_codec_set_pll - configure codec PLL.
2958 * @pll_id: DAI specific PLL ID
2959 * @source: DAI specific source for the PLL
2960 * @freq_in: PLL input clock frequency in Hz
2961 * @freq_out: requested PLL output clock frequency in Hz
2963 * Configures and enables PLL to generate output clock based on input clock.
2965 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
2966 unsigned int freq_in, unsigned int freq_out)
2968 if (codec->driver->set_pll)
2969 return codec->driver->set_pll(codec, pll_id, source,
2974 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
2977 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2979 * @fmt: SND_SOC_DAIFMT_ format value.
2981 * Configures the DAI hardware format and clocking.
2983 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
2985 if (dai->driver == NULL)
2987 if (dai->driver->ops->set_fmt == NULL)
2989 return dai->driver->ops->set_fmt(dai, fmt);
2991 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
2994 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
2996 * @tx_mask: bitmask representing active TX slots.
2997 * @rx_mask: bitmask representing active RX slots.
2998 * @slots: Number of slots in use.
2999 * @slot_width: Width in bits for each slot.
3001 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3004 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
3005 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3007 if (dai->driver && dai->driver->ops->set_tdm_slot)
3008 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3013 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3016 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3018 * @tx_num: how many TX channels
3019 * @tx_slot: pointer to an array which imply the TX slot number channel
3021 * @rx_num: how many RX channels
3022 * @rx_slot: pointer to an array which imply the RX slot number channel
3025 * configure the relationship between channel number and TDM slot number.
3027 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3028 unsigned int tx_num, unsigned int *tx_slot,
3029 unsigned int rx_num, unsigned int *rx_slot)
3031 if (dai->driver && dai->driver->ops->set_channel_map)
3032 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3037 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3040 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3042 * @tristate: tristate enable
3044 * Tristates the DAI so that others can use it.
3046 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3048 if (dai->driver && dai->driver->ops->set_tristate)
3049 return dai->driver->ops->set_tristate(dai, tristate);
3053 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3056 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3058 * @mute: mute enable
3060 * Mutes the DAI DAC.
3062 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
3064 if (dai->driver && dai->driver->ops->digital_mute)
3065 return dai->driver->ops->digital_mute(dai, mute);
3069 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3072 * snd_soc_register_card - Register a card with the ASoC core
3074 * @card: Card to register
3077 int snd_soc_register_card(struct snd_soc_card *card)
3081 if (!card->name || !card->dev)
3084 for (i = 0; i < card->num_links; i++) {
3085 struct snd_soc_dai_link *link = &card->dai_link[i];
3088 * Codec must be specified by 1 of name or OF node,
3089 * not both or neither.
3091 if (!!link->codec_name == !!link->codec_of_node) {
3093 "Neither/both codec name/of_node are set for %s\n",
3099 * Platform may be specified by either name or OF node, but
3100 * can be left unspecified, and a dummy platform will be used.
3102 if (link->platform_name && link->platform_of_node) {
3104 "Both platform name/of_node are set for %s\n", link->name);
3109 * CPU DAI must be specified by 1 of name or OF node,
3110 * not both or neither.
3112 if (!!link->cpu_dai_name == !!link->cpu_dai_of_node) {
3114 "Neither/both cpu_dai name/of_node are set for %s\n",
3120 dev_set_drvdata(card->dev, card);
3122 snd_soc_initialize_card_lists(card);
3124 soc_init_card_debugfs(card);
3126 card->rtd = devm_kzalloc(card->dev,
3127 sizeof(struct snd_soc_pcm_runtime) *
3128 (card->num_links + card->num_aux_devs),
3130 if (card->rtd == NULL)
3132 card->rtd_aux = &card->rtd[card->num_links];
3134 for (i = 0; i < card->num_links; i++)
3135 card->rtd[i].dai_link = &card->dai_link[i];
3137 INIT_LIST_HEAD(&card->list);
3138 INIT_LIST_HEAD(&card->dapm_dirty);
3139 card->instantiated = 0;
3140 mutex_init(&card->mutex);
3141 mutex_init(&card->dapm_mutex);
3143 mutex_lock(&client_mutex);
3144 list_add(&card->list, &card_list);
3145 snd_soc_instantiate_cards();
3146 mutex_unlock(&client_mutex);
3148 dev_dbg(card->dev, "Registered card '%s'\n", card->name);
3152 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3155 * snd_soc_unregister_card - Unregister a card with the ASoC core
3157 * @card: Card to unregister
3160 int snd_soc_unregister_card(struct snd_soc_card *card)
3162 if (card->instantiated)
3163 soc_cleanup_card_resources(card);
3164 mutex_lock(&client_mutex);
3165 list_del(&card->list);
3166 mutex_unlock(&client_mutex);
3167 dev_dbg(card->dev, "Unregistered card '%s'\n", card->name);
3171 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3174 * Simplify DAI link configuration by removing ".-1" from device names
3175 * and sanitizing names.
3177 static char *fmt_single_name(struct device *dev, int *id)
3179 char *found, name[NAME_SIZE];
3182 if (dev_name(dev) == NULL)
3185 strlcpy(name, dev_name(dev), NAME_SIZE);
3187 /* are we a "%s.%d" name (platform and SPI components) */
3188 found = strstr(name, dev->driver->name);
3191 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3193 /* discard ID from name if ID == -1 */
3195 found[strlen(dev->driver->name)] = '\0';
3199 /* I2C component devices are named "bus-addr" */
3200 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3201 char tmp[NAME_SIZE];
3203 /* create unique ID number from I2C addr and bus */
3204 *id = ((id1 & 0xffff) << 16) + id2;
3206 /* sanitize component name for DAI link creation */
3207 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3208 strlcpy(name, tmp, NAME_SIZE);
3213 return kstrdup(name, GFP_KERNEL);
3217 * Simplify DAI link naming for single devices with multiple DAIs by removing
3218 * any ".-1" and using the DAI name (instead of device name).
3220 static inline char *fmt_multiple_name(struct device *dev,
3221 struct snd_soc_dai_driver *dai_drv)
3223 if (dai_drv->name == NULL) {
3224 pr_err("asoc: error - multiple DAI %s registered with no name\n",
3229 return kstrdup(dai_drv->name, GFP_KERNEL);
3233 * snd_soc_register_dai - Register a DAI with the ASoC core
3235 * @dai: DAI to register
3237 int snd_soc_register_dai(struct device *dev,
3238 struct snd_soc_dai_driver *dai_drv)
3240 struct snd_soc_dai *dai;
3242 dev_dbg(dev, "dai register %s\n", dev_name(dev));
3244 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3248 /* create DAI component name */
3249 dai->name = fmt_single_name(dev, &dai->id);
3250 if (dai->name == NULL) {
3256 dai->driver = dai_drv;
3257 dai->dapm.dev = dev;
3258 if (!dai->driver->ops)
3259 dai->driver->ops = &null_dai_ops;
3261 mutex_lock(&client_mutex);
3262 list_add(&dai->list, &dai_list);
3263 snd_soc_instantiate_cards();
3264 mutex_unlock(&client_mutex);
3266 pr_debug("Registered DAI '%s'\n", dai->name);
3270 EXPORT_SYMBOL_GPL(snd_soc_register_dai);
3273 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3275 * @dai: DAI to unregister
3277 void snd_soc_unregister_dai(struct device *dev)
3279 struct snd_soc_dai *dai;
3281 list_for_each_entry(dai, &dai_list, list) {
3282 if (dev == dai->dev)
3288 mutex_lock(&client_mutex);
3289 list_del(&dai->list);
3290 mutex_unlock(&client_mutex);
3292 pr_debug("Unregistered DAI '%s'\n", dai->name);
3296 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
3299 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3301 * @dai: Array of DAIs to register
3302 * @count: Number of DAIs
3304 int snd_soc_register_dais(struct device *dev,
3305 struct snd_soc_dai_driver *dai_drv, size_t count)
3307 struct snd_soc_dai *dai;
3310 dev_dbg(dev, "dai register %s #%Zu\n", dev_name(dev), count);
3312 for (i = 0; i < count; i++) {
3314 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3320 /* create DAI component name */
3321 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3322 if (dai->name == NULL) {
3329 dai->driver = &dai_drv[i];
3330 if (dai->driver->id)
3331 dai->id = dai->driver->id;
3334 dai->dapm.dev = dev;
3335 if (!dai->driver->ops)
3336 dai->driver->ops = &null_dai_ops;
3338 mutex_lock(&client_mutex);
3339 list_add(&dai->list, &dai_list);
3340 mutex_unlock(&client_mutex);
3342 pr_debug("Registered DAI '%s'\n", dai->name);
3345 mutex_lock(&client_mutex);
3346 snd_soc_instantiate_cards();
3347 mutex_unlock(&client_mutex);
3351 for (i--; i >= 0; i--)
3352 snd_soc_unregister_dai(dev);
3356 EXPORT_SYMBOL_GPL(snd_soc_register_dais);
3359 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3361 * @dai: Array of DAIs to unregister
3362 * @count: Number of DAIs
3364 void snd_soc_unregister_dais(struct device *dev, size_t count)
3368 for (i = 0; i < count; i++)
3369 snd_soc_unregister_dai(dev);
3371 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
3374 * snd_soc_register_platform - Register a platform with the ASoC core
3376 * @platform: platform to register
3378 int snd_soc_register_platform(struct device *dev,
3379 struct snd_soc_platform_driver *platform_drv)
3381 struct snd_soc_platform *platform;
3383 dev_dbg(dev, "platform register %s\n", dev_name(dev));
3385 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3386 if (platform == NULL)
3389 /* create platform component name */
3390 platform->name = fmt_single_name(dev, &platform->id);
3391 if (platform->name == NULL) {
3396 platform->dev = dev;
3397 platform->driver = platform_drv;
3398 platform->dapm.dev = dev;
3399 platform->dapm.platform = platform;
3400 platform->dapm.stream_event = platform_drv->stream_event;
3401 mutex_init(&platform->mutex);
3403 mutex_lock(&client_mutex);
3404 list_add(&platform->list, &platform_list);
3405 snd_soc_instantiate_cards();
3406 mutex_unlock(&client_mutex);
3408 pr_debug("Registered platform '%s'\n", platform->name);
3412 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3415 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3417 * @platform: platform to unregister
3419 void snd_soc_unregister_platform(struct device *dev)
3421 struct snd_soc_platform *platform;
3423 list_for_each_entry(platform, &platform_list, list) {
3424 if (dev == platform->dev)
3430 mutex_lock(&client_mutex);
3431 list_del(&platform->list);
3432 mutex_unlock(&client_mutex);
3434 pr_debug("Unregistered platform '%s'\n", platform->name);
3435 kfree(platform->name);
3438 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3440 static u64 codec_format_map[] = {
3441 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
3442 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
3443 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
3444 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
3445 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
3446 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
3447 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3448 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3449 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
3450 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
3451 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
3452 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
3453 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
3454 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
3455 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3456 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
3459 /* Fix up the DAI formats for endianness: codecs don't actually see
3460 * the endianness of the data but we're using the CPU format
3461 * definitions which do need to include endianness so we ensure that
3462 * codec DAIs always have both big and little endian variants set.
3464 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
3468 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
3469 if (stream->formats & codec_format_map[i])
3470 stream->formats |= codec_format_map[i];
3474 * snd_soc_register_codec - Register a codec with the ASoC core
3476 * @codec: codec to register
3478 int snd_soc_register_codec(struct device *dev,
3479 const struct snd_soc_codec_driver *codec_drv,
3480 struct snd_soc_dai_driver *dai_drv,
3484 struct snd_soc_codec *codec;
3487 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3489 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3493 /* create CODEC component name */
3494 codec->name = fmt_single_name(dev, &codec->id);
3495 if (codec->name == NULL) {
3500 if (codec_drv->compress_type)
3501 codec->compress_type = codec_drv->compress_type;
3503 codec->compress_type = SND_SOC_FLAT_COMPRESSION;
3505 codec->write = codec_drv->write;
3506 codec->read = codec_drv->read;
3507 codec->volatile_register = codec_drv->volatile_register;
3508 codec->readable_register = codec_drv->readable_register;
3509 codec->writable_register = codec_drv->writable_register;
3510 codec->ignore_pmdown_time = codec_drv->ignore_pmdown_time;
3511 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
3512 codec->dapm.dev = dev;
3513 codec->dapm.codec = codec;
3514 codec->dapm.seq_notifier = codec_drv->seq_notifier;
3515 codec->dapm.stream_event = codec_drv->stream_event;
3517 codec->driver = codec_drv;
3518 codec->num_dai = num_dai;
3519 mutex_init(&codec->mutex);
3521 /* allocate CODEC register cache */
3522 if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
3523 reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
3524 codec->reg_size = reg_size;
3525 /* it is necessary to make a copy of the default register cache
3526 * because in the case of using a compression type that requires
3527 * the default register cache to be marked as __devinitconst the
3528 * kernel might have freed the array by the time we initialize
3531 if (codec_drv->reg_cache_default) {
3532 codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
3533 reg_size, GFP_KERNEL);
3534 if (!codec->reg_def_copy) {
3541 if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
3542 if (!codec->volatile_register)
3543 codec->volatile_register = snd_soc_default_volatile_register;
3544 if (!codec->readable_register)
3545 codec->readable_register = snd_soc_default_readable_register;
3546 if (!codec->writable_register)
3547 codec->writable_register = snd_soc_default_writable_register;
3550 for (i = 0; i < num_dai; i++) {
3551 fixup_codec_formats(&dai_drv[i].playback);
3552 fixup_codec_formats(&dai_drv[i].capture);
3555 /* register any DAIs */
3557 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
3562 mutex_lock(&client_mutex);
3563 list_add(&codec->list, &codec_list);
3564 snd_soc_instantiate_cards();
3565 mutex_unlock(&client_mutex);
3567 pr_debug("Registered codec '%s'\n", codec->name);
3571 kfree(codec->reg_def_copy);
3572 codec->reg_def_copy = NULL;
3577 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
3580 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3582 * @codec: codec to unregister
3584 void snd_soc_unregister_codec(struct device *dev)
3586 struct snd_soc_codec *codec;
3589 list_for_each_entry(codec, &codec_list, list) {
3590 if (dev == codec->dev)
3597 for (i = 0; i < codec->num_dai; i++)
3598 snd_soc_unregister_dai(dev);
3600 mutex_lock(&client_mutex);
3601 list_del(&codec->list);
3602 mutex_unlock(&client_mutex);
3604 pr_debug("Unregistered codec '%s'\n", codec->name);
3606 snd_soc_cache_exit(codec);
3607 kfree(codec->reg_def_copy);
3611 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
3613 /* Retrieve a card's name from device tree */
3614 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
3615 const char *propname)
3617 struct device_node *np = card->dev->of_node;
3620 ret = of_property_read_string_index(np, propname, 0, &card->name);
3622 * EINVAL means the property does not exist. This is fine providing
3623 * card->name was previously set, which is checked later in
3624 * snd_soc_register_card.
3626 if (ret < 0 && ret != -EINVAL) {
3628 "Property '%s' could not be read: %d\n",
3635 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
3637 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
3638 const char *propname)
3640 struct device_node *np = card->dev->of_node;
3642 struct snd_soc_dapm_route *routes;
3645 num_routes = of_property_count_strings(np, propname);
3646 if (num_routes & 1) {
3648 "Property '%s's length is not even\n",
3655 "Property '%s's length is zero\n",
3660 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
3664 "Could not allocate DAPM route table\n");
3668 for (i = 0; i < num_routes; i++) {
3669 ret = of_property_read_string_index(np, propname,
3670 2 * i, &routes[i].sink);
3673 "Property '%s' index %d could not be read: %d\n",
3674 propname, 2 * i, ret);
3677 ret = of_property_read_string_index(np, propname,
3678 (2 * i) + 1, &routes[i].source);
3681 "Property '%s' index %d could not be read: %d\n",
3682 propname, (2 * i) + 1, ret);
3687 card->num_dapm_routes = num_routes;
3688 card->dapm_routes = routes;
3692 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
3694 static int __init snd_soc_init(void)
3696 #ifdef CONFIG_DEBUG_FS
3697 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
3698 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
3699 pr_warn("ASoC: Failed to create debugfs directory\n");
3700 snd_soc_debugfs_root = NULL;
3703 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
3705 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3707 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
3709 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3711 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
3712 &platform_list_fops))
3713 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3716 snd_soc_util_init();
3718 return platform_driver_register(&soc_driver);
3720 module_init(snd_soc_init);
3722 static void __exit snd_soc_exit(void)
3724 snd_soc_util_exit();
3726 #ifdef CONFIG_DEBUG_FS
3727 debugfs_remove_recursive(snd_soc_debugfs_root);
3729 platform_driver_unregister(&soc_driver);
3731 module_exit(snd_soc_exit);
3733 /* Module information */
3734 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3735 MODULE_DESCRIPTION("ALSA SoC Core");
3736 MODULE_LICENSE("GPL");
3737 MODULE_ALIAS("platform:soc-audio");