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/pinctrl/consumer.h>
34 #include <linux/ctype.h>
35 #include <linux/slab.h>
37 #include <linux/gpio.h>
38 #include <linux/of_gpio.h>
39 #include <sound/ac97_codec.h>
40 #include <sound/core.h>
41 #include <sound/jack.h>
42 #include <sound/pcm.h>
43 #include <sound/pcm_params.h>
44 #include <sound/soc.h>
45 #include <sound/soc-dpcm.h>
46 #include <sound/initval.h>
48 #define CREATE_TRACE_POINTS
49 #include <trace/events/asoc.h>
53 #ifdef CONFIG_DEBUG_FS
54 struct dentry *snd_soc_debugfs_root;
55 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
58 static DEFINE_MUTEX(client_mutex);
59 static LIST_HEAD(platform_list);
60 static LIST_HEAD(codec_list);
61 static LIST_HEAD(component_list);
64 * This is a timeout to do a DAPM powerdown after a stream is closed().
65 * It can be used to eliminate pops between different playback streams, e.g.
66 * between two audio tracks.
68 static int pmdown_time = 5000;
69 module_param(pmdown_time, int, 0);
70 MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
72 struct snd_ac97_reset_cfg {
74 struct pinctrl_state *pstate_reset;
75 struct pinctrl_state *pstate_warm_reset;
76 struct pinctrl_state *pstate_run;
82 /* returns the minimum number of bytes needed to represent
83 * a particular given value */
84 static int min_bytes_needed(unsigned long val)
89 for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
92 c = (sizeof val * 8) - c;
100 /* fill buf which is 'len' bytes with a formatted
101 * string of the form 'reg: value\n' */
102 static int format_register_str(struct snd_soc_codec *codec,
103 unsigned int reg, char *buf, size_t len)
105 int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
106 int regsize = codec->driver->reg_word_size * 2;
108 char tmpbuf[len + 1];
109 char regbuf[regsize + 1];
111 /* since tmpbuf is allocated on the stack, warn the callers if they
112 * try to abuse this function */
115 /* +2 for ': ' and + 1 for '\n' */
116 if (wordsize + regsize + 2 + 1 != len)
119 ret = snd_soc_read(codec, reg);
121 memset(regbuf, 'X', regsize);
122 regbuf[regsize] = '\0';
124 snprintf(regbuf, regsize + 1, "%.*x", regsize, ret);
127 /* prepare the buffer */
128 snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf);
129 /* copy it back to the caller without the '\0' */
130 memcpy(buf, tmpbuf, len);
135 /* codec register dump */
136 static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
137 size_t count, loff_t pos)
140 int wordsize, regsize;
145 wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
146 regsize = codec->driver->reg_word_size * 2;
148 len = wordsize + regsize + 2 + 1;
150 if (!codec->driver->reg_cache_size)
153 if (codec->driver->reg_cache_step)
154 step = codec->driver->reg_cache_step;
156 for (i = 0; i < codec->driver->reg_cache_size; i += step) {
157 if (!snd_soc_codec_readable_register(codec, i))
159 if (codec->driver->display_register) {
160 count += codec->driver->display_register(codec, buf + count,
161 PAGE_SIZE - count, i);
163 /* only support larger than PAGE_SIZE bytes debugfs
164 * entries for the default case */
166 if (total + len >= count - 1)
168 format_register_str(codec, i, buf + total, len);
175 total = min(total, count - 1);
180 static ssize_t codec_reg_show(struct device *dev,
181 struct device_attribute *attr, char *buf)
183 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
185 return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
188 static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
190 static ssize_t pmdown_time_show(struct device *dev,
191 struct device_attribute *attr, char *buf)
193 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
195 return sprintf(buf, "%ld\n", rtd->pmdown_time);
198 static ssize_t pmdown_time_set(struct device *dev,
199 struct device_attribute *attr,
200 const char *buf, size_t count)
202 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
205 ret = kstrtol(buf, 10, &rtd->pmdown_time);
212 static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
214 #ifdef CONFIG_DEBUG_FS
215 static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
216 size_t count, loff_t *ppos)
219 struct snd_soc_codec *codec = file->private_data;
222 if (*ppos < 0 || !count)
225 buf = kmalloc(count, GFP_KERNEL);
229 ret = soc_codec_reg_show(codec, buf, count, *ppos);
231 if (copy_to_user(user_buf, buf, ret)) {
242 static ssize_t codec_reg_write_file(struct file *file,
243 const char __user *user_buf, size_t count, loff_t *ppos)
248 unsigned long reg, value;
249 struct snd_soc_codec *codec = file->private_data;
252 buf_size = min(count, (sizeof(buf)-1));
253 if (copy_from_user(buf, user_buf, buf_size))
257 while (*start == ' ')
259 reg = simple_strtoul(start, &start, 16);
260 while (*start == ' ')
262 ret = kstrtoul(start, 16, &value);
266 /* Userspace has been fiddling around behind the kernel's back */
267 add_taint(TAINT_USER, LOCKDEP_NOW_UNRELIABLE);
269 snd_soc_write(codec, reg, value);
273 static const struct file_operations codec_reg_fops = {
275 .read = codec_reg_read_file,
276 .write = codec_reg_write_file,
277 .llseek = default_llseek,
280 static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
282 struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
284 codec->debugfs_codec_root = debugfs_create_dir(codec->name,
286 if (!codec->debugfs_codec_root) {
288 "ASoC: Failed to create codec debugfs directory\n");
292 debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
294 debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
297 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
298 codec->debugfs_codec_root,
299 codec, &codec_reg_fops);
300 if (!codec->debugfs_reg)
302 "ASoC: Failed to create codec register debugfs file\n");
304 snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root);
307 static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
309 debugfs_remove_recursive(codec->debugfs_codec_root);
312 static void soc_init_platform_debugfs(struct snd_soc_platform *platform)
314 struct dentry *debugfs_card_root = platform->card->debugfs_card_root;
316 platform->debugfs_platform_root = debugfs_create_dir(platform->name,
318 if (!platform->debugfs_platform_root) {
319 dev_warn(platform->dev,
320 "ASoC: Failed to create platform debugfs directory\n");
324 snd_soc_dapm_debugfs_init(&platform->dapm,
325 platform->debugfs_platform_root);
328 static void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
330 debugfs_remove_recursive(platform->debugfs_platform_root);
333 static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
334 size_t count, loff_t *ppos)
336 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
337 ssize_t len, ret = 0;
338 struct snd_soc_codec *codec;
343 list_for_each_entry(codec, &codec_list, list) {
344 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
348 if (ret > PAGE_SIZE) {
355 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
362 static const struct file_operations codec_list_fops = {
363 .read = codec_list_read_file,
364 .llseek = default_llseek,/* read accesses f_pos */
367 static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
368 size_t count, loff_t *ppos)
370 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
371 ssize_t len, ret = 0;
372 struct snd_soc_component *component;
373 struct snd_soc_dai *dai;
378 list_for_each_entry(component, &component_list, list) {
379 list_for_each_entry(dai, &component->dai_list, list) {
380 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
384 if (ret > PAGE_SIZE) {
391 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
398 static const struct file_operations dai_list_fops = {
399 .read = dai_list_read_file,
400 .llseek = default_llseek,/* read accesses f_pos */
403 static ssize_t platform_list_read_file(struct file *file,
404 char __user *user_buf,
405 size_t count, loff_t *ppos)
407 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
408 ssize_t len, ret = 0;
409 struct snd_soc_platform *platform;
414 list_for_each_entry(platform, &platform_list, list) {
415 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
419 if (ret > PAGE_SIZE) {
425 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
432 static const struct file_operations platform_list_fops = {
433 .read = platform_list_read_file,
434 .llseek = default_llseek,/* read accesses f_pos */
437 static void soc_init_card_debugfs(struct snd_soc_card *card)
439 card->debugfs_card_root = debugfs_create_dir(card->name,
440 snd_soc_debugfs_root);
441 if (!card->debugfs_card_root) {
443 "ASoC: Failed to create card debugfs directory\n");
447 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
448 card->debugfs_card_root,
450 if (!card->debugfs_pop_time)
452 "ASoC: Failed to create pop time debugfs file\n");
455 static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
457 debugfs_remove_recursive(card->debugfs_card_root);
462 static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
466 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
470 static inline void soc_init_platform_debugfs(struct snd_soc_platform *platform)
474 static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
478 static inline void soc_init_card_debugfs(struct snd_soc_card *card)
482 static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
487 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
488 const char *dai_link, int stream)
492 for (i = 0; i < card->num_links; i++) {
493 if (card->rtd[i].dai_link->no_pcm &&
494 !strcmp(card->rtd[i].dai_link->name, dai_link))
495 return card->rtd[i].pcm->streams[stream].substream;
497 dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link);
500 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);
502 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
503 const char *dai_link)
507 for (i = 0; i < card->num_links; i++) {
508 if (!strcmp(card->rtd[i].dai_link->name, dai_link))
509 return &card->rtd[i];
511 dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link);
514 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
516 #ifdef CONFIG_SND_SOC_AC97_BUS
517 /* unregister ac97 codec */
518 static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
520 if (codec->ac97->dev.bus)
521 device_unregister(&codec->ac97->dev);
525 /* stop no dev release warning */
526 static void soc_ac97_device_release(struct device *dev){}
528 /* register ac97 codec to bus */
529 static int soc_ac97_dev_register(struct snd_soc_codec *codec)
533 codec->ac97->dev.bus = &ac97_bus_type;
534 codec->ac97->dev.parent = codec->card->dev;
535 codec->ac97->dev.release = soc_ac97_device_release;
537 dev_set_name(&codec->ac97->dev, "%d-%d:%s",
538 codec->card->snd_card->number, 0, codec->name);
539 err = device_register(&codec->ac97->dev);
541 dev_err(codec->dev, "ASoC: Can't register ac97 bus\n");
542 codec->ac97->dev.bus = NULL;
549 static void codec2codec_close_delayed_work(struct work_struct *work)
551 /* Currently nothing to do for c2c links
552 * Since c2c links are internal nodes in the DAPM graph and
553 * don't interface with the outside world or application layer
554 * we don't have to do any special handling on close.
558 #ifdef CONFIG_PM_SLEEP
559 /* powers down audio subsystem for suspend */
560 int snd_soc_suspend(struct device *dev)
562 struct snd_soc_card *card = dev_get_drvdata(dev);
563 struct snd_soc_codec *codec;
566 /* If the initialization of this soc device failed, there is no codec
567 * associated with it. Just bail out in this case.
569 if (list_empty(&card->codec_dev_list))
572 /* Due to the resume being scheduled into a workqueue we could
573 * suspend before that's finished - wait for it to complete.
575 snd_power_lock(card->snd_card);
576 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
577 snd_power_unlock(card->snd_card);
579 /* we're going to block userspace touching us until resume completes */
580 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
582 /* mute any active DACs */
583 for (i = 0; i < card->num_rtd; i++) {
584 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
585 struct snd_soc_dai_driver *drv = dai->driver;
587 if (card->rtd[i].dai_link->ignore_suspend)
590 if (drv->ops->digital_mute && dai->playback_active)
591 drv->ops->digital_mute(dai, 1);
594 /* suspend all pcms */
595 for (i = 0; i < card->num_rtd; i++) {
596 if (card->rtd[i].dai_link->ignore_suspend)
599 snd_pcm_suspend_all(card->rtd[i].pcm);
602 if (card->suspend_pre)
603 card->suspend_pre(card);
605 for (i = 0; i < card->num_rtd; i++) {
606 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
607 struct snd_soc_platform *platform = card->rtd[i].platform;
609 if (card->rtd[i].dai_link->ignore_suspend)
612 if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
613 cpu_dai->driver->suspend(cpu_dai);
614 if (platform->driver->suspend && !platform->suspended) {
615 platform->driver->suspend(cpu_dai);
616 platform->suspended = 1;
620 /* close any waiting streams and save state */
621 for (i = 0; i < card->num_rtd; i++) {
622 flush_delayed_work(&card->rtd[i].delayed_work);
623 card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
626 for (i = 0; i < card->num_rtd; i++) {
628 if (card->rtd[i].dai_link->ignore_suspend)
631 snd_soc_dapm_stream_event(&card->rtd[i],
632 SNDRV_PCM_STREAM_PLAYBACK,
633 SND_SOC_DAPM_STREAM_SUSPEND);
635 snd_soc_dapm_stream_event(&card->rtd[i],
636 SNDRV_PCM_STREAM_CAPTURE,
637 SND_SOC_DAPM_STREAM_SUSPEND);
640 /* Recheck all analogue paths too */
641 dapm_mark_io_dirty(&card->dapm);
642 snd_soc_dapm_sync(&card->dapm);
644 /* suspend all CODECs */
645 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
646 /* If there are paths active then the CODEC will be held with
647 * bias _ON and should not be suspended. */
648 if (!codec->suspended && codec->driver->suspend) {
649 switch (codec->dapm.bias_level) {
650 case SND_SOC_BIAS_STANDBY:
652 * If the CODEC is capable of idle
653 * bias off then being in STANDBY
654 * means it's doing something,
655 * otherwise fall through.
657 if (codec->dapm.idle_bias_off) {
659 "ASoC: idle_bias_off CODEC on over suspend\n");
662 case SND_SOC_BIAS_OFF:
663 codec->driver->suspend(codec);
664 codec->suspended = 1;
665 codec->cache_sync = 1;
666 if (codec->using_regmap)
667 regcache_mark_dirty(codec->control_data);
668 /* deactivate pins to sleep state */
669 pinctrl_pm_select_sleep_state(codec->dev);
673 "ASoC: CODEC is on over suspend\n");
679 for (i = 0; i < card->num_rtd; i++) {
680 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
682 if (card->rtd[i].dai_link->ignore_suspend)
685 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
686 cpu_dai->driver->suspend(cpu_dai);
688 /* deactivate pins to sleep state */
689 pinctrl_pm_select_sleep_state(cpu_dai->dev);
692 if (card->suspend_post)
693 card->suspend_post(card);
697 EXPORT_SYMBOL_GPL(snd_soc_suspend);
699 /* deferred resume work, so resume can complete before we finished
700 * setting our codec back up, which can be very slow on I2C
702 static void soc_resume_deferred(struct work_struct *work)
704 struct snd_soc_card *card =
705 container_of(work, struct snd_soc_card, deferred_resume_work);
706 struct snd_soc_codec *codec;
709 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
710 * so userspace apps are blocked from touching us
713 dev_dbg(card->dev, "ASoC: starting resume work\n");
715 /* Bring us up into D2 so that DAPM starts enabling things */
716 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
718 if (card->resume_pre)
719 card->resume_pre(card);
721 /* resume AC97 DAIs */
722 for (i = 0; i < card->num_rtd; i++) {
723 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
725 if (card->rtd[i].dai_link->ignore_suspend)
728 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
729 cpu_dai->driver->resume(cpu_dai);
732 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
733 /* If the CODEC was idle over suspend then it will have been
734 * left with bias OFF or STANDBY and suspended so we must now
735 * resume. Otherwise the suspend was suppressed.
737 if (codec->driver->resume && codec->suspended) {
738 switch (codec->dapm.bias_level) {
739 case SND_SOC_BIAS_STANDBY:
740 case SND_SOC_BIAS_OFF:
741 codec->driver->resume(codec);
742 codec->suspended = 0;
746 "ASoC: CODEC was on over suspend\n");
752 for (i = 0; i < card->num_rtd; i++) {
754 if (card->rtd[i].dai_link->ignore_suspend)
757 snd_soc_dapm_stream_event(&card->rtd[i],
758 SNDRV_PCM_STREAM_PLAYBACK,
759 SND_SOC_DAPM_STREAM_RESUME);
761 snd_soc_dapm_stream_event(&card->rtd[i],
762 SNDRV_PCM_STREAM_CAPTURE,
763 SND_SOC_DAPM_STREAM_RESUME);
766 /* unmute any active DACs */
767 for (i = 0; i < card->num_rtd; i++) {
768 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
769 struct snd_soc_dai_driver *drv = dai->driver;
771 if (card->rtd[i].dai_link->ignore_suspend)
774 if (drv->ops->digital_mute && dai->playback_active)
775 drv->ops->digital_mute(dai, 0);
778 for (i = 0; i < card->num_rtd; i++) {
779 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
780 struct snd_soc_platform *platform = card->rtd[i].platform;
782 if (card->rtd[i].dai_link->ignore_suspend)
785 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
786 cpu_dai->driver->resume(cpu_dai);
787 if (platform->driver->resume && platform->suspended) {
788 platform->driver->resume(cpu_dai);
789 platform->suspended = 0;
793 if (card->resume_post)
794 card->resume_post(card);
796 dev_dbg(card->dev, "ASoC: resume work completed\n");
798 /* userspace can access us now we are back as we were before */
799 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
801 /* Recheck all analogue paths too */
802 dapm_mark_io_dirty(&card->dapm);
803 snd_soc_dapm_sync(&card->dapm);
806 /* powers up audio subsystem after a suspend */
807 int snd_soc_resume(struct device *dev)
809 struct snd_soc_card *card = dev_get_drvdata(dev);
810 int i, ac97_control = 0;
812 /* If the initialization of this soc device failed, there is no codec
813 * associated with it. Just bail out in this case.
815 if (list_empty(&card->codec_dev_list))
818 /* activate pins from sleep state */
819 for (i = 0; i < card->num_rtd; i++) {
820 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
821 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
823 pinctrl_pm_select_default_state(cpu_dai->dev);
824 if (codec_dai->active)
825 pinctrl_pm_select_default_state(codec_dai->dev);
828 /* AC97 devices might have other drivers hanging off them so
829 * need to resume immediately. Other drivers don't have that
830 * problem and may take a substantial amount of time to resume
831 * due to I/O costs and anti-pop so handle them out of line.
833 for (i = 0; i < card->num_rtd; i++) {
834 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
835 ac97_control |= cpu_dai->driver->ac97_control;
838 dev_dbg(dev, "ASoC: Resuming AC97 immediately\n");
839 soc_resume_deferred(&card->deferred_resume_work);
841 dev_dbg(dev, "ASoC: Scheduling resume work\n");
842 if (!schedule_work(&card->deferred_resume_work))
843 dev_err(dev, "ASoC: resume work item may be lost\n");
848 EXPORT_SYMBOL_GPL(snd_soc_resume);
850 #define snd_soc_suspend NULL
851 #define snd_soc_resume NULL
854 static const struct snd_soc_dai_ops null_dai_ops = {
857 static int soc_bind_dai_link(struct snd_soc_card *card, int num)
859 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
860 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
861 struct snd_soc_component *component;
862 struct snd_soc_codec *codec;
863 struct snd_soc_platform *platform;
864 struct snd_soc_dai *codec_dai, *cpu_dai;
865 const char *platform_name;
867 dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num);
869 /* Find CPU DAI from registered DAIs*/
870 list_for_each_entry(component, &component_list, list) {
871 if (dai_link->cpu_of_node &&
872 component->dev->of_node != dai_link->cpu_of_node)
874 if (dai_link->cpu_name &&
875 strcmp(dev_name(component->dev), dai_link->cpu_name))
877 list_for_each_entry(cpu_dai, &component->dai_list, list) {
878 if (dai_link->cpu_dai_name &&
879 strcmp(cpu_dai->name, dai_link->cpu_dai_name))
882 rtd->cpu_dai = cpu_dai;
887 dev_err(card->dev, "ASoC: CPU DAI %s not registered\n",
888 dai_link->cpu_dai_name);
889 return -EPROBE_DEFER;
892 /* Find CODEC from registered CODECs */
893 list_for_each_entry(codec, &codec_list, list) {
894 if (dai_link->codec_of_node) {
895 if (codec->dev->of_node != dai_link->codec_of_node)
898 if (strcmp(codec->name, dai_link->codec_name))
905 * CODEC found, so find CODEC DAI from registered DAIs from
908 list_for_each_entry(codec_dai, &codec->component.dai_list, list) {
909 if (!strcmp(codec_dai->name, dai_link->codec_dai_name)) {
910 rtd->codec_dai = codec_dai;
915 if (!rtd->codec_dai) {
916 dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
917 dai_link->codec_dai_name);
918 return -EPROBE_DEFER;
923 dev_err(card->dev, "ASoC: CODEC %s not registered\n",
924 dai_link->codec_name);
925 return -EPROBE_DEFER;
928 /* if there's no platform we match on the empty platform */
929 platform_name = dai_link->platform_name;
930 if (!platform_name && !dai_link->platform_of_node)
931 platform_name = "snd-soc-dummy";
933 /* find one from the set of registered platforms */
934 list_for_each_entry(platform, &platform_list, list) {
935 if (dai_link->platform_of_node) {
936 if (platform->dev->of_node !=
937 dai_link->platform_of_node)
940 if (strcmp(platform->name, platform_name))
944 rtd->platform = platform;
946 if (!rtd->platform) {
947 dev_err(card->dev, "ASoC: platform %s not registered\n",
948 dai_link->platform_name);
949 return -EPROBE_DEFER;
957 static int soc_remove_platform(struct snd_soc_platform *platform)
961 if (platform->driver->remove) {
962 ret = platform->driver->remove(platform);
964 dev_err(platform->dev, "ASoC: failed to remove %d\n",
968 /* Make sure all DAPM widgets are freed */
969 snd_soc_dapm_free(&platform->dapm);
971 soc_cleanup_platform_debugfs(platform);
972 platform->probed = 0;
973 list_del(&platform->card_list);
974 module_put(platform->dev->driver->owner);
979 static void soc_remove_codec(struct snd_soc_codec *codec)
983 if (codec->driver->remove) {
984 err = codec->driver->remove(codec);
986 dev_err(codec->dev, "ASoC: failed to remove %d\n", err);
989 /* Make sure all DAPM widgets are freed */
990 snd_soc_dapm_free(&codec->dapm);
992 soc_cleanup_codec_debugfs(codec);
994 list_del(&codec->card_list);
995 module_put(codec->dev->driver->owner);
998 static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order)
1000 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1001 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
1004 /* unregister the rtd device */
1005 if (rtd->dev_registered) {
1006 device_remove_file(rtd->dev, &dev_attr_pmdown_time);
1007 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1008 device_unregister(rtd->dev);
1009 rtd->dev_registered = 0;
1012 /* remove the CODEC DAI */
1013 if (codec_dai && codec_dai->probed &&
1014 codec_dai->driver->remove_order == order) {
1015 if (codec_dai->driver->remove) {
1016 err = codec_dai->driver->remove(codec_dai);
1018 dev_err(codec_dai->dev,
1019 "ASoC: failed to remove %s: %d\n",
1020 codec_dai->name, err);
1022 codec_dai->probed = 0;
1023 list_del(&codec_dai->card_list);
1026 /* remove the cpu_dai */
1027 if (cpu_dai && cpu_dai->probed &&
1028 cpu_dai->driver->remove_order == order) {
1029 if (cpu_dai->driver->remove) {
1030 err = cpu_dai->driver->remove(cpu_dai);
1032 dev_err(cpu_dai->dev,
1033 "ASoC: failed to remove %s: %d\n",
1034 cpu_dai->name, err);
1036 cpu_dai->probed = 0;
1037 list_del(&cpu_dai->card_list);
1039 if (!cpu_dai->codec) {
1040 snd_soc_dapm_free(&cpu_dai->dapm);
1041 module_put(cpu_dai->dev->driver->owner);
1046 static void soc_remove_link_components(struct snd_soc_card *card, int num,
1049 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1050 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1051 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1052 struct snd_soc_platform *platform = rtd->platform;
1053 struct snd_soc_codec *codec;
1055 /* remove the platform */
1056 if (platform && platform->probed &&
1057 platform->driver->remove_order == order) {
1058 soc_remove_platform(platform);
1061 /* remove the CODEC-side CODEC */
1063 codec = codec_dai->codec;
1064 if (codec && codec->probed &&
1065 codec->driver->remove_order == order)
1066 soc_remove_codec(codec);
1069 /* remove any CPU-side CODEC */
1071 codec = cpu_dai->codec;
1072 if (codec && codec->probed &&
1073 codec->driver->remove_order == order)
1074 soc_remove_codec(codec);
1078 static void soc_remove_dai_links(struct snd_soc_card *card)
1082 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1084 for (dai = 0; dai < card->num_rtd; dai++)
1085 soc_remove_link_dais(card, dai, order);
1088 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1090 for (dai = 0; dai < card->num_rtd; dai++)
1091 soc_remove_link_components(card, dai, order);
1097 static void soc_set_name_prefix(struct snd_soc_card *card,
1098 struct snd_soc_codec *codec)
1102 if (card->codec_conf == NULL)
1105 for (i = 0; i < card->num_configs; i++) {
1106 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1107 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
1108 codec->name_prefix = map->name_prefix;
1114 static int soc_probe_codec(struct snd_soc_card *card,
1115 struct snd_soc_codec *codec)
1118 const struct snd_soc_codec_driver *driver = codec->driver;
1119 struct snd_soc_dai *dai;
1122 codec->dapm.card = card;
1123 soc_set_name_prefix(card, codec);
1125 if (!try_module_get(codec->dev->driver->owner))
1128 soc_init_codec_debugfs(codec);
1130 if (driver->dapm_widgets)
1131 snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
1132 driver->num_dapm_widgets);
1134 /* Create DAPM widgets for each DAI stream */
1135 list_for_each_entry(dai, &codec->component.dai_list, list)
1136 snd_soc_dapm_new_dai_widgets(&codec->dapm, dai);
1138 codec->dapm.idle_bias_off = driver->idle_bias_off;
1140 if (!codec->write && dev_get_regmap(codec->dev, NULL)) {
1141 /* Set the default I/O up try regmap */
1142 ret = snd_soc_codec_set_cache_io(codec, NULL);
1145 "Failed to set cache I/O: %d\n", ret);
1150 if (driver->probe) {
1151 ret = driver->probe(codec);
1154 "ASoC: failed to probe CODEC %d\n", ret);
1157 WARN(codec->dapm.idle_bias_off &&
1158 codec->dapm.bias_level != SND_SOC_BIAS_OFF,
1159 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1163 if (driver->controls)
1164 snd_soc_add_codec_controls(codec, driver->controls,
1165 driver->num_controls);
1166 if (driver->dapm_routes)
1167 snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
1168 driver->num_dapm_routes);
1170 /* mark codec as probed and add to card codec list */
1172 list_add(&codec->card_list, &card->codec_dev_list);
1173 list_add(&codec->dapm.list, &card->dapm_list);
1178 soc_cleanup_codec_debugfs(codec);
1179 module_put(codec->dev->driver->owner);
1184 static int soc_probe_platform(struct snd_soc_card *card,
1185 struct snd_soc_platform *platform)
1188 const struct snd_soc_platform_driver *driver = platform->driver;
1189 struct snd_soc_component *component;
1190 struct snd_soc_dai *dai;
1192 platform->card = card;
1193 platform->dapm.card = card;
1195 if (!try_module_get(platform->dev->driver->owner))
1198 soc_init_platform_debugfs(platform);
1200 if (driver->dapm_widgets)
1201 snd_soc_dapm_new_controls(&platform->dapm,
1202 driver->dapm_widgets, driver->num_dapm_widgets);
1204 /* Create DAPM widgets for each DAI stream */
1205 list_for_each_entry(component, &component_list, list) {
1206 if (component->dev != platform->dev)
1208 list_for_each_entry(dai, &component->dai_list, list)
1209 snd_soc_dapm_new_dai_widgets(&platform->dapm, dai);
1212 platform->dapm.idle_bias_off = 1;
1214 if (driver->probe) {
1215 ret = driver->probe(platform);
1217 dev_err(platform->dev,
1218 "ASoC: failed to probe platform %d\n", ret);
1223 if (driver->controls)
1224 snd_soc_add_platform_controls(platform, driver->controls,
1225 driver->num_controls);
1226 if (driver->dapm_routes)
1227 snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
1228 driver->num_dapm_routes);
1230 /* mark platform as probed and add to card platform list */
1231 platform->probed = 1;
1232 list_add(&platform->card_list, &card->platform_dev_list);
1233 list_add(&platform->dapm.list, &card->dapm_list);
1238 soc_cleanup_platform_debugfs(platform);
1239 module_put(platform->dev->driver->owner);
1244 static void rtd_release(struct device *dev)
1249 static int soc_post_component_init(struct snd_soc_card *card,
1250 struct snd_soc_codec *codec,
1251 int num, int dailess)
1253 struct snd_soc_dai_link *dai_link = NULL;
1254 struct snd_soc_aux_dev *aux_dev = NULL;
1255 struct snd_soc_pcm_runtime *rtd;
1260 dai_link = &card->dai_link[num];
1261 rtd = &card->rtd[num];
1262 name = dai_link->name;
1264 aux_dev = &card->aux_dev[num];
1265 rtd = &card->rtd_aux[num];
1266 name = aux_dev->name;
1270 /* do machine specific initialization */
1271 if (!dailess && dai_link->init)
1272 ret = dai_link->init(rtd);
1273 else if (dailess && aux_dev->init)
1274 ret = aux_dev->init(&codec->dapm);
1276 dev_err(card->dev, "ASoC: failed to init %s: %d\n", name, ret);
1280 /* register the rtd device */
1283 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1286 device_initialize(rtd->dev);
1287 rtd->dev->parent = card->dev;
1288 rtd->dev->release = rtd_release;
1289 rtd->dev->init_name = name;
1290 dev_set_drvdata(rtd->dev, rtd);
1291 mutex_init(&rtd->pcm_mutex);
1292 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1293 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1294 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1295 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1296 ret = device_add(rtd->dev);
1298 /* calling put_device() here to free the rtd->dev */
1299 put_device(rtd->dev);
1301 "ASoC: failed to register runtime device: %d\n", ret);
1304 rtd->dev_registered = 1;
1306 /* add DAPM sysfs entries for this codec */
1307 ret = snd_soc_dapm_sys_add(rtd->dev);
1310 "ASoC: failed to add codec dapm sysfs entries: %d\n", ret);
1312 /* add codec sysfs entries */
1313 ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
1316 "ASoC: failed to add codec sysfs files: %d\n", ret);
1318 #ifdef CONFIG_DEBUG_FS
1319 /* add DPCM sysfs entries */
1320 if (!dailess && !dai_link->dynamic)
1323 ret = soc_dpcm_debugfs_add(rtd);
1325 dev_err(rtd->dev, "ASoC: failed to add dpcm sysfs entries: %d\n", ret);
1332 static int soc_probe_link_components(struct snd_soc_card *card, int num,
1335 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1336 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1337 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1338 struct snd_soc_platform *platform = rtd->platform;
1341 /* probe the CPU-side component, if it is a CODEC */
1342 if (cpu_dai->codec &&
1343 !cpu_dai->codec->probed &&
1344 cpu_dai->codec->driver->probe_order == order) {
1345 ret = soc_probe_codec(card, cpu_dai->codec);
1350 /* probe the CODEC-side component */
1351 if (!codec_dai->codec->probed &&
1352 codec_dai->codec->driver->probe_order == order) {
1353 ret = soc_probe_codec(card, codec_dai->codec);
1358 /* probe the platform */
1359 if (!platform->probed &&
1360 platform->driver->probe_order == order) {
1361 ret = soc_probe_platform(card, platform);
1369 static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
1371 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1372 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1373 struct snd_soc_codec *codec = rtd->codec;
1374 struct snd_soc_platform *platform = rtd->platform;
1375 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1376 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1377 struct snd_soc_dapm_widget *play_w, *capture_w;
1380 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1381 card->name, num, order);
1383 /* config components */
1384 cpu_dai->platform = platform;
1385 codec_dai->card = card;
1386 cpu_dai->card = card;
1388 /* set default power off timeout */
1389 rtd->pmdown_time = pmdown_time;
1391 /* probe the cpu_dai */
1392 if (!cpu_dai->probed &&
1393 cpu_dai->driver->probe_order == order) {
1394 if (!cpu_dai->codec) {
1395 cpu_dai->dapm.card = card;
1396 if (!try_module_get(cpu_dai->dev->driver->owner))
1399 list_add(&cpu_dai->dapm.list, &card->dapm_list);
1402 if (cpu_dai->driver->probe) {
1403 ret = cpu_dai->driver->probe(cpu_dai);
1405 dev_err(cpu_dai->dev,
1406 "ASoC: failed to probe CPU DAI %s: %d\n",
1407 cpu_dai->name, ret);
1408 module_put(cpu_dai->dev->driver->owner);
1412 cpu_dai->probed = 1;
1413 /* mark cpu_dai as probed and add to card dai list */
1414 list_add(&cpu_dai->card_list, &card->dai_dev_list);
1417 /* probe the CODEC DAI */
1418 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
1419 if (codec_dai->driver->probe) {
1420 ret = codec_dai->driver->probe(codec_dai);
1422 dev_err(codec_dai->dev,
1423 "ASoC: failed to probe CODEC DAI %s: %d\n",
1424 codec_dai->name, ret);
1429 /* mark codec_dai as probed and add to card dai list */
1430 codec_dai->probed = 1;
1431 list_add(&codec_dai->card_list, &card->dai_dev_list);
1434 /* complete DAI probe during last probe */
1435 if (order != SND_SOC_COMP_ORDER_LAST)
1438 ret = soc_post_component_init(card, codec, num, 0);
1442 ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
1444 dev_warn(rtd->dev, "ASoC: failed to add pmdown_time sysfs: %d\n",
1447 if (cpu_dai->driver->compress_dai) {
1448 /*create compress_device"*/
1449 ret = soc_new_compress(rtd, num);
1451 dev_err(card->dev, "ASoC: can't create compress %s\n",
1452 dai_link->stream_name);
1457 if (!dai_link->params) {
1458 /* create the pcm */
1459 ret = soc_new_pcm(rtd, num);
1461 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1462 dai_link->stream_name, ret);
1466 INIT_DELAYED_WORK(&rtd->delayed_work,
1467 codec2codec_close_delayed_work);
1469 /* link the DAI widgets */
1470 play_w = codec_dai->playback_widget;
1471 capture_w = cpu_dai->capture_widget;
1472 if (play_w && capture_w) {
1473 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1476 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1477 play_w->name, capture_w->name, ret);
1482 play_w = cpu_dai->playback_widget;
1483 capture_w = codec_dai->capture_widget;
1484 if (play_w && capture_w) {
1485 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1488 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1489 play_w->name, capture_w->name, ret);
1496 /* add platform data for AC97 devices */
1497 if (rtd->codec_dai->driver->ac97_control)
1498 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1503 #ifdef CONFIG_SND_SOC_AC97_BUS
1504 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1508 /* Only instantiate AC97 if not already done by the adaptor
1509 * for the generic AC97 subsystem.
1511 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
1513 * It is possible that the AC97 device is already registered to
1514 * the device subsystem. This happens when the device is created
1515 * via snd_ac97_mixer(). Currently only SoC codec that does so
1516 * is the generic AC97 glue but others migh emerge.
1518 * In those cases we don't try to register the device again.
1520 if (!rtd->codec->ac97_created)
1523 ret = soc_ac97_dev_register(rtd->codec);
1525 dev_err(rtd->codec->dev,
1526 "ASoC: AC97 device register failed: %d\n", ret);
1530 rtd->codec->ac97_registered = 1;
1535 static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1537 if (codec->ac97_registered) {
1538 soc_ac97_dev_unregister(codec);
1539 codec->ac97_registered = 0;
1544 static int soc_check_aux_dev(struct snd_soc_card *card, int num)
1546 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1547 struct snd_soc_codec *codec;
1549 /* find CODEC from registered CODECs*/
1550 list_for_each_entry(codec, &codec_list, list) {
1551 if (!strcmp(codec->name, aux_dev->codec_name))
1555 dev_err(card->dev, "ASoC: %s not registered\n", aux_dev->codec_name);
1557 return -EPROBE_DEFER;
1560 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1562 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1563 struct snd_soc_codec *codec;
1566 /* find CODEC from registered CODECs*/
1567 list_for_each_entry(codec, &codec_list, list) {
1568 if (!strcmp(codec->name, aux_dev->codec_name)) {
1569 if (codec->probed) {
1571 "ASoC: codec already probed");
1578 /* codec not found */
1579 dev_err(card->dev, "ASoC: codec %s not found", aux_dev->codec_name);
1580 return -EPROBE_DEFER;
1583 ret = soc_probe_codec(card, codec);
1587 ret = soc_post_component_init(card, codec, num, 1);
1593 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1595 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1596 struct snd_soc_codec *codec = rtd->codec;
1598 /* unregister the rtd device */
1599 if (rtd->dev_registered) {
1600 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1601 device_unregister(rtd->dev);
1602 rtd->dev_registered = 0;
1605 if (codec && codec->probed)
1606 soc_remove_codec(codec);
1609 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec)
1613 if (codec->cache_init)
1616 ret = snd_soc_cache_init(codec);
1619 "ASoC: Failed to set cache compression type: %d\n",
1623 codec->cache_init = 1;
1627 static int snd_soc_instantiate_card(struct snd_soc_card *card)
1629 struct snd_soc_codec *codec;
1630 struct snd_soc_dai_link *dai_link;
1631 int ret, i, order, dai_fmt;
1633 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1636 for (i = 0; i < card->num_links; i++) {
1637 ret = soc_bind_dai_link(card, i);
1642 /* check aux_devs too */
1643 for (i = 0; i < card->num_aux_devs; i++) {
1644 ret = soc_check_aux_dev(card, i);
1649 /* initialize the register cache for each available codec */
1650 list_for_each_entry(codec, &codec_list, list) {
1651 if (codec->cache_init)
1653 ret = snd_soc_init_codec_cache(codec);
1658 /* card bind complete so register a sound card */
1659 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1660 card->owner, 0, &card->snd_card);
1663 "ASoC: can't create sound card for card %s: %d\n",
1667 card->snd_card->dev = card->dev;
1669 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1670 card->dapm.dev = card->dev;
1671 card->dapm.card = card;
1672 list_add(&card->dapm.list, &card->dapm_list);
1674 #ifdef CONFIG_DEBUG_FS
1675 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1678 #ifdef CONFIG_PM_SLEEP
1679 /* deferred resume work */
1680 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1683 if (card->dapm_widgets)
1684 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1685 card->num_dapm_widgets);
1687 /* initialise the sound card only once */
1689 ret = card->probe(card);
1691 goto card_probe_error;
1694 /* probe all components used by DAI links on this card */
1695 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1697 for (i = 0; i < card->num_links; i++) {
1698 ret = soc_probe_link_components(card, i, order);
1701 "ASoC: failed to instantiate card %d\n",
1708 /* probe all DAI links on this card */
1709 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1711 for (i = 0; i < card->num_links; i++) {
1712 ret = soc_probe_link_dais(card, i, order);
1715 "ASoC: failed to instantiate card %d\n",
1722 for (i = 0; i < card->num_aux_devs; i++) {
1723 ret = soc_probe_aux_dev(card, i);
1726 "ASoC: failed to add auxiliary devices %d\n",
1728 goto probe_aux_dev_err;
1732 snd_soc_dapm_link_dai_widgets(card);
1733 snd_soc_dapm_connect_dai_link_widgets(card);
1736 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1738 if (card->dapm_routes)
1739 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1740 card->num_dapm_routes);
1742 for (i = 0; i < card->num_links; i++) {
1743 dai_link = &card->dai_link[i];
1744 dai_fmt = dai_link->dai_fmt;
1747 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1749 if (ret != 0 && ret != -ENOTSUPP)
1750 dev_warn(card->rtd[i].codec_dai->dev,
1751 "ASoC: Failed to set DAI format: %d\n",
1755 /* If this is a regular CPU link there will be a platform */
1757 (dai_link->platform_name || dai_link->platform_of_node)) {
1758 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1760 if (ret != 0 && ret != -ENOTSUPP)
1761 dev_warn(card->rtd[i].cpu_dai->dev,
1762 "ASoC: Failed to set DAI format: %d\n",
1764 } else if (dai_fmt) {
1765 /* Flip the polarity for the "CPU" end */
1766 dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
1767 switch (dai_link->dai_fmt &
1768 SND_SOC_DAIFMT_MASTER_MASK) {
1769 case SND_SOC_DAIFMT_CBM_CFM:
1770 dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1772 case SND_SOC_DAIFMT_CBM_CFS:
1773 dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1775 case SND_SOC_DAIFMT_CBS_CFM:
1776 dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1778 case SND_SOC_DAIFMT_CBS_CFS:
1779 dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1783 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1785 if (ret != 0 && ret != -ENOTSUPP)
1786 dev_warn(card->rtd[i].cpu_dai->dev,
1787 "ASoC: Failed to set DAI format: %d\n",
1792 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1794 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1795 "%s", card->long_name ? card->long_name : card->name);
1796 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1797 "%s", card->driver_name ? card->driver_name : card->name);
1798 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1799 switch (card->snd_card->driver[i]) {
1805 if (!isalnum(card->snd_card->driver[i]))
1806 card->snd_card->driver[i] = '_';
1811 if (card->late_probe) {
1812 ret = card->late_probe(card);
1814 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
1816 goto probe_aux_dev_err;
1820 if (card->fully_routed)
1821 list_for_each_entry(codec, &card->codec_dev_list, card_list)
1822 snd_soc_dapm_auto_nc_codec_pins(codec);
1824 snd_soc_dapm_new_widgets(card);
1826 ret = snd_card_register(card->snd_card);
1828 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
1830 goto probe_aux_dev_err;
1833 #ifdef CONFIG_SND_SOC_AC97_BUS
1834 /* register any AC97 codecs */
1835 for (i = 0; i < card->num_rtd; i++) {
1836 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1839 "ASoC: failed to register AC97: %d\n", ret);
1841 soc_unregister_ac97_dai_link(card->rtd[i].codec);
1842 goto probe_aux_dev_err;
1847 card->instantiated = 1;
1848 snd_soc_dapm_sync(&card->dapm);
1849 mutex_unlock(&card->mutex);
1854 for (i = 0; i < card->num_aux_devs; i++)
1855 soc_remove_aux_dev(card, i);
1858 soc_remove_dai_links(card);
1864 snd_card_free(card->snd_card);
1867 mutex_unlock(&card->mutex);
1872 /* probes a new socdev */
1873 static int soc_probe(struct platform_device *pdev)
1875 struct snd_soc_card *card = platform_get_drvdata(pdev);
1878 * no card, so machine driver should be registering card
1879 * we should not be here in that case so ret error
1884 dev_warn(&pdev->dev,
1885 "ASoC: machine %s should use snd_soc_register_card()\n",
1888 /* Bodge while we unpick instantiation */
1889 card->dev = &pdev->dev;
1891 return snd_soc_register_card(card);
1894 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1898 /* make sure any delayed work runs */
1899 for (i = 0; i < card->num_rtd; i++) {
1900 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1901 flush_delayed_work(&rtd->delayed_work);
1904 /* remove auxiliary devices */
1905 for (i = 0; i < card->num_aux_devs; i++)
1906 soc_remove_aux_dev(card, i);
1908 /* remove and free each DAI */
1909 soc_remove_dai_links(card);
1911 soc_cleanup_card_debugfs(card);
1913 /* remove the card */
1917 snd_soc_dapm_free(&card->dapm);
1919 snd_card_free(card->snd_card);
1924 /* removes a socdev */
1925 static int soc_remove(struct platform_device *pdev)
1927 struct snd_soc_card *card = platform_get_drvdata(pdev);
1929 snd_soc_unregister_card(card);
1933 int snd_soc_poweroff(struct device *dev)
1935 struct snd_soc_card *card = dev_get_drvdata(dev);
1938 if (!card->instantiated)
1941 /* Flush out pmdown_time work - we actually do want to run it
1942 * now, we're shutting down so no imminent restart. */
1943 for (i = 0; i < card->num_rtd; i++) {
1944 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1945 flush_delayed_work(&rtd->delayed_work);
1948 snd_soc_dapm_shutdown(card);
1950 /* deactivate pins to sleep state */
1951 for (i = 0; i < card->num_rtd; i++) {
1952 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1953 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
1954 pinctrl_pm_select_sleep_state(codec_dai->dev);
1955 pinctrl_pm_select_sleep_state(cpu_dai->dev);
1960 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
1962 const struct dev_pm_ops snd_soc_pm_ops = {
1963 .suspend = snd_soc_suspend,
1964 .resume = snd_soc_resume,
1965 .freeze = snd_soc_suspend,
1966 .thaw = snd_soc_resume,
1967 .poweroff = snd_soc_poweroff,
1968 .restore = snd_soc_resume,
1970 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
1972 /* ASoC platform driver */
1973 static struct platform_driver soc_driver = {
1975 .name = "soc-audio",
1976 .owner = THIS_MODULE,
1977 .pm = &snd_soc_pm_ops,
1980 .remove = soc_remove,
1984 * snd_soc_codec_volatile_register: Report if a register is volatile.
1986 * @codec: CODEC to query.
1987 * @reg: Register to query.
1989 * Boolean function indiciating if a CODEC register is volatile.
1991 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
1994 if (codec->volatile_register)
1995 return codec->volatile_register(codec, reg);
1999 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
2002 * snd_soc_codec_readable_register: Report if a register is readable.
2004 * @codec: CODEC to query.
2005 * @reg: Register to query.
2007 * Boolean function indicating if a CODEC register is readable.
2009 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
2012 if (codec->readable_register)
2013 return codec->readable_register(codec, reg);
2017 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
2020 * snd_soc_codec_writable_register: Report if a register is writable.
2022 * @codec: CODEC to query.
2023 * @reg: Register to query.
2025 * Boolean function indicating if a CODEC register is writable.
2027 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
2030 if (codec->writable_register)
2031 return codec->writable_register(codec, reg);
2035 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
2037 int snd_soc_platform_read(struct snd_soc_platform *platform,
2042 if (!platform->driver->read) {
2043 dev_err(platform->dev, "ASoC: platform has no read back\n");
2047 ret = platform->driver->read(platform, reg);
2048 dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
2049 trace_snd_soc_preg_read(platform, reg, ret);
2053 EXPORT_SYMBOL_GPL(snd_soc_platform_read);
2055 int snd_soc_platform_write(struct snd_soc_platform *platform,
2056 unsigned int reg, unsigned int val)
2058 if (!platform->driver->write) {
2059 dev_err(platform->dev, "ASoC: platform has no write back\n");
2063 dev_dbg(platform->dev, "write %x = %x\n", reg, val);
2064 trace_snd_soc_preg_write(platform, reg, val);
2065 return platform->driver->write(platform, reg, val);
2067 EXPORT_SYMBOL_GPL(snd_soc_platform_write);
2070 * snd_soc_new_ac97_codec - initailise AC97 device
2071 * @codec: audio codec
2072 * @ops: AC97 bus operations
2073 * @num: AC97 codec number
2075 * Initialises AC97 codec resources for use by ad-hoc devices only.
2077 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
2078 struct snd_ac97_bus_ops *ops, int num)
2080 mutex_lock(&codec->mutex);
2082 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2083 if (codec->ac97 == NULL) {
2084 mutex_unlock(&codec->mutex);
2088 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
2089 if (codec->ac97->bus == NULL) {
2092 mutex_unlock(&codec->mutex);
2096 codec->ac97->bus->ops = ops;
2097 codec->ac97->num = num;
2100 * Mark the AC97 device to be created by us. This way we ensure that the
2101 * device will be registered with the device subsystem later on.
2103 codec->ac97_created = 1;
2105 mutex_unlock(&codec->mutex);
2108 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
2110 static struct snd_ac97_reset_cfg snd_ac97_rst_cfg;
2112 static void snd_soc_ac97_warm_reset(struct snd_ac97 *ac97)
2114 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2116 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_warm_reset);
2118 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 1);
2122 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2124 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2128 static void snd_soc_ac97_reset(struct snd_ac97 *ac97)
2130 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2132 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_reset);
2134 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2135 gpio_direction_output(snd_ac97_rst_cfg.gpio_sdata, 0);
2136 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 0);
2140 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 1);
2142 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2146 static int snd_soc_ac97_parse_pinctl(struct device *dev,
2147 struct snd_ac97_reset_cfg *cfg)
2150 struct pinctrl_state *state;
2154 p = devm_pinctrl_get(dev);
2156 dev_err(dev, "Failed to get pinctrl\n");
2161 state = pinctrl_lookup_state(p, "ac97-reset");
2162 if (IS_ERR(state)) {
2163 dev_err(dev, "Can't find pinctrl state ac97-reset\n");
2164 return PTR_RET(state);
2166 cfg->pstate_reset = state;
2168 state = pinctrl_lookup_state(p, "ac97-warm-reset");
2169 if (IS_ERR(state)) {
2170 dev_err(dev, "Can't find pinctrl state ac97-warm-reset\n");
2171 return PTR_RET(state);
2173 cfg->pstate_warm_reset = state;
2175 state = pinctrl_lookup_state(p, "ac97-running");
2176 if (IS_ERR(state)) {
2177 dev_err(dev, "Can't find pinctrl state ac97-running\n");
2178 return PTR_RET(state);
2180 cfg->pstate_run = state;
2182 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 0);
2184 dev_err(dev, "Can't find ac97-sync gpio\n");
2187 ret = devm_gpio_request(dev, gpio, "AC97 link sync");
2189 dev_err(dev, "Failed requesting ac97-sync gpio\n");
2192 cfg->gpio_sync = gpio;
2194 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 1);
2196 dev_err(dev, "Can't find ac97-sdata gpio %d\n", gpio);
2199 ret = devm_gpio_request(dev, gpio, "AC97 link sdata");
2201 dev_err(dev, "Failed requesting ac97-sdata gpio\n");
2204 cfg->gpio_sdata = gpio;
2206 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 2);
2208 dev_err(dev, "Can't find ac97-reset gpio\n");
2211 ret = devm_gpio_request(dev, gpio, "AC97 link reset");
2213 dev_err(dev, "Failed requesting ac97-reset gpio\n");
2216 cfg->gpio_reset = gpio;
2221 struct snd_ac97_bus_ops *soc_ac97_ops;
2222 EXPORT_SYMBOL_GPL(soc_ac97_ops);
2224 int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops)
2226 if (ops == soc_ac97_ops)
2229 if (soc_ac97_ops && ops)
2236 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops);
2239 * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions
2241 * This function sets the reset and warm_reset properties of ops and parses
2242 * the device node of pdev to get pinctrl states and gpio numbers to use.
2244 int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops,
2245 struct platform_device *pdev)
2247 struct device *dev = &pdev->dev;
2248 struct snd_ac97_reset_cfg cfg;
2251 ret = snd_soc_ac97_parse_pinctl(dev, &cfg);
2255 ret = snd_soc_set_ac97_ops(ops);
2259 ops->warm_reset = snd_soc_ac97_warm_reset;
2260 ops->reset = snd_soc_ac97_reset;
2262 snd_ac97_rst_cfg = cfg;
2265 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset);
2268 * snd_soc_free_ac97_codec - free AC97 codec device
2269 * @codec: audio codec
2271 * Frees AC97 codec device resources.
2273 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
2275 mutex_lock(&codec->mutex);
2276 #ifdef CONFIG_SND_SOC_AC97_BUS
2277 soc_unregister_ac97_dai_link(codec);
2279 kfree(codec->ac97->bus);
2282 codec->ac97_created = 0;
2283 mutex_unlock(&codec->mutex);
2285 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
2287 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
2291 ret = codec->read(codec, reg);
2292 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
2293 trace_snd_soc_reg_read(codec, reg, ret);
2297 EXPORT_SYMBOL_GPL(snd_soc_read);
2299 unsigned int snd_soc_write(struct snd_soc_codec *codec,
2300 unsigned int reg, unsigned int val)
2302 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
2303 trace_snd_soc_reg_write(codec, reg, val);
2304 return codec->write(codec, reg, val);
2306 EXPORT_SYMBOL_GPL(snd_soc_write);
2309 * snd_soc_update_bits - update codec register bits
2310 * @codec: audio codec
2311 * @reg: codec register
2312 * @mask: register mask
2315 * Writes new register value.
2317 * Returns 1 for change, 0 for no change, or negative error code.
2319 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
2320 unsigned int mask, unsigned int value)
2323 unsigned int old, new;
2326 if (codec->using_regmap) {
2327 ret = regmap_update_bits_check(codec->control_data, reg,
2328 mask, value, &change);
2330 ret = snd_soc_read(codec, reg);
2335 new = (old & ~mask) | (value & mask);
2336 change = old != new;
2338 ret = snd_soc_write(codec, reg, new);
2346 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
2349 * snd_soc_update_bits_locked - update codec register bits
2350 * @codec: audio codec
2351 * @reg: codec register
2352 * @mask: register mask
2355 * Writes new register value, and takes the codec mutex.
2357 * Returns 1 for change else 0.
2359 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
2360 unsigned short reg, unsigned int mask,
2365 mutex_lock(&codec->mutex);
2366 change = snd_soc_update_bits(codec, reg, mask, value);
2367 mutex_unlock(&codec->mutex);
2371 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
2374 * snd_soc_test_bits - test register for change
2375 * @codec: audio codec
2376 * @reg: codec register
2377 * @mask: register mask
2380 * Tests a register with a new value and checks if the new value is
2381 * different from the old value.
2383 * Returns 1 for change else 0.
2385 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
2386 unsigned int mask, unsigned int value)
2389 unsigned int old, new;
2391 old = snd_soc_read(codec, reg);
2392 new = (old & ~mask) | value;
2393 change = old != new;
2397 EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2400 * snd_soc_cnew - create new control
2401 * @_template: control template
2402 * @data: control private data
2403 * @long_name: control long name
2404 * @prefix: control name prefix
2406 * Create a new mixer control from a template control.
2408 * Returns 0 for success, else error.
2410 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2411 void *data, const char *long_name,
2414 struct snd_kcontrol_new template;
2415 struct snd_kcontrol *kcontrol;
2418 memcpy(&template, _template, sizeof(template));
2422 long_name = template.name;
2425 name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
2429 template.name = name;
2431 template.name = long_name;
2434 kcontrol = snd_ctl_new1(&template, data);
2440 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2442 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2443 const struct snd_kcontrol_new *controls, int num_controls,
2444 const char *prefix, void *data)
2448 for (i = 0; i < num_controls; i++) {
2449 const struct snd_kcontrol_new *control = &controls[i];
2450 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2451 control->name, prefix));
2453 dev_err(dev, "ASoC: Failed to add %s: %d\n",
2454 control->name, err);
2462 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
2465 struct snd_card *card = soc_card->snd_card;
2466 struct snd_kcontrol *kctl;
2468 if (unlikely(!name))
2471 list_for_each_entry(kctl, &card->controls, list)
2472 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
2476 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
2479 * snd_soc_add_codec_controls - add an array of controls to a codec.
2480 * Convenience function to add a list of controls. Many codecs were
2481 * duplicating this code.
2483 * @codec: codec to add controls to
2484 * @controls: array of controls to add
2485 * @num_controls: number of elements in the array
2487 * Return 0 for success, else error.
2489 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2490 const struct snd_kcontrol_new *controls, int num_controls)
2492 struct snd_card *card = codec->card->snd_card;
2494 return snd_soc_add_controls(card, codec->dev, controls, num_controls,
2495 codec->name_prefix, codec);
2497 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2500 * snd_soc_add_platform_controls - add an array of controls to a platform.
2501 * Convenience function to add a list of controls.
2503 * @platform: platform to add controls to
2504 * @controls: array of controls to add
2505 * @num_controls: number of elements in the array
2507 * Return 0 for success, else error.
2509 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2510 const struct snd_kcontrol_new *controls, int num_controls)
2512 struct snd_card *card = platform->card->snd_card;
2514 return snd_soc_add_controls(card, platform->dev, controls, num_controls,
2517 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2520 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2521 * Convenience function to add a list of controls.
2523 * @soc_card: SoC card to add controls to
2524 * @controls: array of controls to add
2525 * @num_controls: number of elements in the array
2527 * Return 0 for success, else error.
2529 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2530 const struct snd_kcontrol_new *controls, int num_controls)
2532 struct snd_card *card = soc_card->snd_card;
2534 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2537 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2540 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2541 * Convienience function to add a list of controls.
2543 * @dai: DAI to add controls to
2544 * @controls: array of controls to add
2545 * @num_controls: number of elements in the array
2547 * Return 0 for success, else error.
2549 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2550 const struct snd_kcontrol_new *controls, int num_controls)
2552 struct snd_card *card = dai->card->snd_card;
2554 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2557 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2560 * snd_soc_info_enum_double - enumerated double mixer info callback
2561 * @kcontrol: mixer control
2562 * @uinfo: control element information
2564 * Callback to provide information about a double enumerated
2567 * Returns 0 for success.
2569 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2570 struct snd_ctl_elem_info *uinfo)
2572 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2574 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2575 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2576 uinfo->value.enumerated.items = e->items;
2578 if (uinfo->value.enumerated.item >= e->items)
2579 uinfo->value.enumerated.item = e->items - 1;
2580 strlcpy(uinfo->value.enumerated.name,
2581 e->texts[uinfo->value.enumerated.item],
2582 sizeof(uinfo->value.enumerated.name));
2585 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2588 * snd_soc_get_enum_double - enumerated double mixer get callback
2589 * @kcontrol: mixer control
2590 * @ucontrol: control element information
2592 * Callback to get the value of a double enumerated mixer.
2594 * Returns 0 for success.
2596 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2597 struct snd_ctl_elem_value *ucontrol)
2599 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2600 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2601 unsigned int val, item;
2602 unsigned int reg_val;
2604 reg_val = snd_soc_read(codec, e->reg);
2605 val = (reg_val >> e->shift_l) & e->mask;
2606 item = snd_soc_enum_val_to_item(e, val);
2607 ucontrol->value.enumerated.item[0] = item;
2608 if (e->shift_l != e->shift_r) {
2609 val = (reg_val >> e->shift_l) & e->mask;
2610 item = snd_soc_enum_val_to_item(e, val);
2611 ucontrol->value.enumerated.item[1] = item;
2616 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2619 * snd_soc_put_enum_double - enumerated double mixer put callback
2620 * @kcontrol: mixer control
2621 * @ucontrol: control element information
2623 * Callback to set the value of a double enumerated mixer.
2625 * Returns 0 for success.
2627 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2628 struct snd_ctl_elem_value *ucontrol)
2630 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2631 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2632 unsigned int *item = ucontrol->value.enumerated.item;
2636 if (item[0] >= e->items)
2638 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
2639 mask = e->mask << e->shift_l;
2640 if (e->shift_l != e->shift_r) {
2641 if (item[1] >= e->items)
2643 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
2644 mask |= e->mask << e->shift_r;
2647 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2649 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2652 * snd_soc_read_signed - Read a codec register and interprete as signed value
2654 * @reg: Register to read
2655 * @mask: Mask to use after shifting the register value
2656 * @shift: Right shift of register value
2657 * @sign_bit: Bit that describes if a number is negative or not.
2659 * This functions reads a codec register. The register value is shifted right
2660 * by 'shift' bits and masked with the given 'mask'. Afterwards it translates
2661 * the given registervalue into a signed integer if sign_bit is non-zero.
2663 * Returns the register value as signed int.
2665 static int snd_soc_read_signed(struct snd_soc_codec *codec, unsigned int reg,
2666 unsigned int mask, unsigned int shift, unsigned int sign_bit)
2671 val = (snd_soc_read(codec, reg) >> shift) & mask;
2676 /* non-negative number */
2677 if (!(val & BIT(sign_bit)))
2683 * The register most probably does not contain a full-sized int.
2684 * Instead we have an arbitrary number of bits in a signed
2685 * representation which has to be translated into a full-sized int.
2686 * This is done by filling up all bits above the sign-bit.
2688 ret |= ~((int)(BIT(sign_bit) - 1));
2694 * snd_soc_info_volsw - single mixer info callback
2695 * @kcontrol: mixer control
2696 * @uinfo: control element information
2698 * Callback to provide information about a single mixer control, or a double
2699 * mixer control that spans 2 registers.
2701 * Returns 0 for success.
2703 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2704 struct snd_ctl_elem_info *uinfo)
2706 struct soc_mixer_control *mc =
2707 (struct soc_mixer_control *)kcontrol->private_value;
2710 if (!mc->platform_max)
2711 mc->platform_max = mc->max;
2712 platform_max = mc->platform_max;
2714 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2715 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2717 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2719 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2720 uinfo->value.integer.min = 0;
2721 uinfo->value.integer.max = platform_max - mc->min;
2724 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2727 * snd_soc_get_volsw - single mixer get callback
2728 * @kcontrol: mixer control
2729 * @ucontrol: control element information
2731 * Callback to get the value of a single mixer control, or a double mixer
2732 * control that spans 2 registers.
2734 * Returns 0 for success.
2736 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2737 struct snd_ctl_elem_value *ucontrol)
2739 struct soc_mixer_control *mc =
2740 (struct soc_mixer_control *)kcontrol->private_value;
2741 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2742 unsigned int reg = mc->reg;
2743 unsigned int reg2 = mc->rreg;
2744 unsigned int shift = mc->shift;
2745 unsigned int rshift = mc->rshift;
2748 int sign_bit = mc->sign_bit;
2749 unsigned int mask = (1 << fls(max)) - 1;
2750 unsigned int invert = mc->invert;
2753 mask = BIT(sign_bit + 1) - 1;
2755 ucontrol->value.integer.value[0] = snd_soc_read_signed(codec, reg, mask,
2756 shift, sign_bit) - min;
2758 ucontrol->value.integer.value[0] =
2759 max - ucontrol->value.integer.value[0];
2761 if (snd_soc_volsw_is_stereo(mc)) {
2763 ucontrol->value.integer.value[1] =
2764 snd_soc_read_signed(codec, reg, mask, rshift,
2767 ucontrol->value.integer.value[1] =
2768 snd_soc_read_signed(codec, reg2, mask, shift,
2771 ucontrol->value.integer.value[1] =
2772 max - ucontrol->value.integer.value[1];
2777 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2780 * snd_soc_put_volsw - single mixer put callback
2781 * @kcontrol: mixer control
2782 * @ucontrol: control element information
2784 * Callback to set the value of a single mixer control, or a double mixer
2785 * control that spans 2 registers.
2787 * Returns 0 for success.
2789 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2790 struct snd_ctl_elem_value *ucontrol)
2792 struct soc_mixer_control *mc =
2793 (struct soc_mixer_control *)kcontrol->private_value;
2794 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2795 unsigned int reg = mc->reg;
2796 unsigned int reg2 = mc->rreg;
2797 unsigned int shift = mc->shift;
2798 unsigned int rshift = mc->rshift;
2801 unsigned int sign_bit = mc->sign_bit;
2802 unsigned int mask = (1 << fls(max)) - 1;
2803 unsigned int invert = mc->invert;
2805 bool type_2r = false;
2806 unsigned int val2 = 0;
2807 unsigned int val, val_mask;
2810 mask = BIT(sign_bit + 1) - 1;
2812 val = ((ucontrol->value.integer.value[0] + min) & mask);
2815 val_mask = mask << shift;
2817 if (snd_soc_volsw_is_stereo(mc)) {
2818 val2 = ((ucontrol->value.integer.value[1] + min) & mask);
2822 val_mask |= mask << rshift;
2823 val |= val2 << rshift;
2825 val2 = val2 << shift;
2829 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2834 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2838 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2841 * snd_soc_get_volsw_sx - single mixer get callback
2842 * @kcontrol: mixer control
2843 * @ucontrol: control element information
2845 * Callback to get the value of a single mixer control, or a double mixer
2846 * control that spans 2 registers.
2848 * Returns 0 for success.
2850 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
2851 struct snd_ctl_elem_value *ucontrol)
2853 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2854 struct soc_mixer_control *mc =
2855 (struct soc_mixer_control *)kcontrol->private_value;
2857 unsigned int reg = mc->reg;
2858 unsigned int reg2 = mc->rreg;
2859 unsigned int shift = mc->shift;
2860 unsigned int rshift = mc->rshift;
2863 int mask = (1 << (fls(min + max) - 1)) - 1;
2865 ucontrol->value.integer.value[0] =
2866 ((snd_soc_read(codec, reg) >> shift) - min) & mask;
2868 if (snd_soc_volsw_is_stereo(mc))
2869 ucontrol->value.integer.value[1] =
2870 ((snd_soc_read(codec, reg2) >> rshift) - min) & mask;
2874 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
2877 * snd_soc_put_volsw_sx - double mixer set callback
2878 * @kcontrol: mixer control
2879 * @uinfo: control element information
2881 * Callback to set the value of a double mixer control that spans 2 registers.
2883 * Returns 0 for success.
2885 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
2886 struct snd_ctl_elem_value *ucontrol)
2888 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2889 struct soc_mixer_control *mc =
2890 (struct soc_mixer_control *)kcontrol->private_value;
2892 unsigned int reg = mc->reg;
2893 unsigned int reg2 = mc->rreg;
2894 unsigned int shift = mc->shift;
2895 unsigned int rshift = mc->rshift;
2898 int mask = (1 << (fls(min + max) - 1)) - 1;
2900 unsigned short val, val_mask, val2 = 0;
2902 val_mask = mask << shift;
2903 val = (ucontrol->value.integer.value[0] + min) & mask;
2906 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2910 if (snd_soc_volsw_is_stereo(mc)) {
2911 val_mask = mask << rshift;
2912 val2 = (ucontrol->value.integer.value[1] + min) & mask;
2913 val2 = val2 << rshift;
2915 if (snd_soc_update_bits_locked(codec, reg2, val_mask, val2))
2920 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
2923 * snd_soc_info_volsw_s8 - signed mixer info callback
2924 * @kcontrol: mixer control
2925 * @uinfo: control element information
2927 * Callback to provide information about a signed mixer control.
2929 * Returns 0 for success.
2931 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2932 struct snd_ctl_elem_info *uinfo)
2934 struct soc_mixer_control *mc =
2935 (struct soc_mixer_control *)kcontrol->private_value;
2939 if (!mc->platform_max)
2940 mc->platform_max = mc->max;
2941 platform_max = mc->platform_max;
2943 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2945 uinfo->value.integer.min = 0;
2946 uinfo->value.integer.max = platform_max - min;
2949 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2952 * snd_soc_get_volsw_s8 - signed mixer get callback
2953 * @kcontrol: mixer control
2954 * @ucontrol: control element information
2956 * Callback to get the value of a signed mixer control.
2958 * Returns 0 for success.
2960 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2961 struct snd_ctl_elem_value *ucontrol)
2963 struct soc_mixer_control *mc =
2964 (struct soc_mixer_control *)kcontrol->private_value;
2965 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2966 unsigned int reg = mc->reg;
2968 int val = snd_soc_read(codec, reg);
2970 ucontrol->value.integer.value[0] =
2971 ((signed char)(val & 0xff))-min;
2972 ucontrol->value.integer.value[1] =
2973 ((signed char)((val >> 8) & 0xff))-min;
2976 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2979 * snd_soc_put_volsw_sgn - signed mixer put callback
2980 * @kcontrol: mixer control
2981 * @ucontrol: control element information
2983 * Callback to set the value of a signed mixer control.
2985 * Returns 0 for success.
2987 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2988 struct snd_ctl_elem_value *ucontrol)
2990 struct soc_mixer_control *mc =
2991 (struct soc_mixer_control *)kcontrol->private_value;
2992 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2993 unsigned int reg = mc->reg;
2997 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2998 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
3000 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
3002 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
3005 * snd_soc_info_volsw_range - single mixer info callback with range.
3006 * @kcontrol: mixer control
3007 * @uinfo: control element information
3009 * Callback to provide information, within a range, about a single
3012 * returns 0 for success.
3014 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
3015 struct snd_ctl_elem_info *uinfo)
3017 struct soc_mixer_control *mc =
3018 (struct soc_mixer_control *)kcontrol->private_value;
3022 if (!mc->platform_max)
3023 mc->platform_max = mc->max;
3024 platform_max = mc->platform_max;
3026 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3027 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
3028 uinfo->value.integer.min = 0;
3029 uinfo->value.integer.max = platform_max - min;
3033 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
3036 * snd_soc_put_volsw_range - single mixer put value callback with range.
3037 * @kcontrol: mixer control
3038 * @ucontrol: control element information
3040 * Callback to set the value, within a range, for a single mixer control.
3042 * Returns 0 for success.
3044 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
3045 struct snd_ctl_elem_value *ucontrol)
3047 struct soc_mixer_control *mc =
3048 (struct soc_mixer_control *)kcontrol->private_value;
3049 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3050 unsigned int reg = mc->reg;
3051 unsigned int rreg = mc->rreg;
3052 unsigned int shift = mc->shift;
3055 unsigned int mask = (1 << fls(max)) - 1;
3056 unsigned int invert = mc->invert;
3057 unsigned int val, val_mask;
3060 val = ((ucontrol->value.integer.value[0] + min) & mask);
3063 val_mask = mask << shift;
3066 ret = snd_soc_update_bits_locked(codec, reg, val_mask, val);
3070 if (snd_soc_volsw_is_stereo(mc)) {
3071 val = ((ucontrol->value.integer.value[1] + min) & mask);
3074 val_mask = mask << shift;
3077 ret = snd_soc_update_bits_locked(codec, rreg, val_mask, val);
3082 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
3085 * snd_soc_get_volsw_range - single mixer get callback with range
3086 * @kcontrol: mixer control
3087 * @ucontrol: control element information
3089 * Callback to get the value, within a range, of a single mixer control.
3091 * Returns 0 for success.
3093 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
3094 struct snd_ctl_elem_value *ucontrol)
3096 struct soc_mixer_control *mc =
3097 (struct soc_mixer_control *)kcontrol->private_value;
3098 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3099 unsigned int reg = mc->reg;
3100 unsigned int rreg = mc->rreg;
3101 unsigned int shift = mc->shift;
3104 unsigned int mask = (1 << fls(max)) - 1;
3105 unsigned int invert = mc->invert;
3107 ucontrol->value.integer.value[0] =
3108 (snd_soc_read(codec, reg) >> shift) & mask;
3110 ucontrol->value.integer.value[0] =
3111 max - ucontrol->value.integer.value[0];
3112 ucontrol->value.integer.value[0] =
3113 ucontrol->value.integer.value[0] - min;
3115 if (snd_soc_volsw_is_stereo(mc)) {
3116 ucontrol->value.integer.value[1] =
3117 (snd_soc_read(codec, rreg) >> shift) & mask;
3119 ucontrol->value.integer.value[1] =
3120 max - ucontrol->value.integer.value[1];
3121 ucontrol->value.integer.value[1] =
3122 ucontrol->value.integer.value[1] - min;
3127 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
3130 * snd_soc_limit_volume - Set new limit to an existing volume control.
3132 * @codec: where to look for the control
3133 * @name: Name of the control
3134 * @max: new maximum limit
3136 * Return 0 for success, else error.
3138 int snd_soc_limit_volume(struct snd_soc_codec *codec,
3139 const char *name, int max)
3141 struct snd_card *card = codec->card->snd_card;
3142 struct snd_kcontrol *kctl;
3143 struct soc_mixer_control *mc;
3147 /* Sanity check for name and max */
3148 if (unlikely(!name || max <= 0))
3151 list_for_each_entry(kctl, &card->controls, list) {
3152 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
3158 mc = (struct soc_mixer_control *)kctl->private_value;
3159 if (max <= mc->max) {
3160 mc->platform_max = max;
3166 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
3168 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
3169 struct snd_ctl_elem_info *uinfo)
3171 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3172 struct soc_bytes *params = (void *)kcontrol->private_value;
3174 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
3175 uinfo->count = params->num_regs * codec->val_bytes;
3179 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
3181 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
3182 struct snd_ctl_elem_value *ucontrol)
3184 struct soc_bytes *params = (void *)kcontrol->private_value;
3185 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3188 if (codec->using_regmap)
3189 ret = regmap_raw_read(codec->control_data, params->base,
3190 ucontrol->value.bytes.data,
3191 params->num_regs * codec->val_bytes);
3195 /* Hide any masked bytes to ensure consistent data reporting */
3196 if (ret == 0 && params->mask) {
3197 switch (codec->val_bytes) {
3199 ucontrol->value.bytes.data[0] &= ~params->mask;
3202 ((u16 *)(&ucontrol->value.bytes.data))[0]
3203 &= cpu_to_be16(~params->mask);
3206 ((u32 *)(&ucontrol->value.bytes.data))[0]
3207 &= cpu_to_be32(~params->mask);
3216 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
3218 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
3219 struct snd_ctl_elem_value *ucontrol)
3221 struct soc_bytes *params = (void *)kcontrol->private_value;
3222 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3224 unsigned int val, mask;
3227 if (!codec->using_regmap)
3230 len = params->num_regs * codec->val_bytes;
3232 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
3237 * If we've got a mask then we need to preserve the register
3238 * bits. We shouldn't modify the incoming data so take a
3242 ret = regmap_read(codec->control_data, params->base, &val);
3246 val &= params->mask;
3248 switch (codec->val_bytes) {
3250 ((u8 *)data)[0] &= ~params->mask;
3251 ((u8 *)data)[0] |= val;
3254 mask = ~params->mask;
3255 ret = regmap_parse_val(codec->control_data,
3260 ((u16 *)data)[0] &= mask;
3262 ret = regmap_parse_val(codec->control_data,
3267 ((u16 *)data)[0] |= val;
3270 mask = ~params->mask;
3271 ret = regmap_parse_val(codec->control_data,
3276 ((u32 *)data)[0] &= mask;
3278 ret = regmap_parse_val(codec->control_data,
3283 ((u32 *)data)[0] |= val;
3291 ret = regmap_raw_write(codec->control_data, params->base,
3299 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
3302 * snd_soc_info_xr_sx - signed multi register info callback
3303 * @kcontrol: mreg control
3304 * @uinfo: control element information
3306 * Callback to provide information of a control that can
3307 * span multiple codec registers which together
3308 * forms a single signed value in a MSB/LSB manner.
3310 * Returns 0 for success.
3312 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
3313 struct snd_ctl_elem_info *uinfo)
3315 struct soc_mreg_control *mc =
3316 (struct soc_mreg_control *)kcontrol->private_value;
3317 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3319 uinfo->value.integer.min = mc->min;
3320 uinfo->value.integer.max = mc->max;
3324 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
3327 * snd_soc_get_xr_sx - signed multi register get callback
3328 * @kcontrol: mreg control
3329 * @ucontrol: control element information
3331 * Callback to get the value of a control that can span
3332 * multiple codec registers which together forms a single
3333 * signed value in a MSB/LSB manner. The control supports
3334 * specifying total no of bits used to allow for bitfields
3335 * across the multiple codec registers.
3337 * Returns 0 for success.
3339 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
3340 struct snd_ctl_elem_value *ucontrol)
3342 struct soc_mreg_control *mc =
3343 (struct soc_mreg_control *)kcontrol->private_value;
3344 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3345 unsigned int regbase = mc->regbase;
3346 unsigned int regcount = mc->regcount;
3347 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3348 unsigned int regwmask = (1<<regwshift)-1;
3349 unsigned int invert = mc->invert;
3350 unsigned long mask = (1UL<<mc->nbits)-1;
3354 unsigned long regval;
3357 for (i = 0; i < regcount; i++) {
3358 regval = snd_soc_read(codec, regbase+i) & regwmask;
3359 val |= regval << (regwshift*(regcount-i-1));
3362 if (min < 0 && val > max)
3366 ucontrol->value.integer.value[0] = val;
3370 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
3373 * snd_soc_put_xr_sx - signed multi register get callback
3374 * @kcontrol: mreg control
3375 * @ucontrol: control element information
3377 * Callback to set the value of a control that can span
3378 * multiple codec registers which together forms a single
3379 * signed value in a MSB/LSB manner. The control supports
3380 * specifying total no of bits used to allow for bitfields
3381 * across the multiple codec registers.
3383 * Returns 0 for success.
3385 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
3386 struct snd_ctl_elem_value *ucontrol)
3388 struct soc_mreg_control *mc =
3389 (struct soc_mreg_control *)kcontrol->private_value;
3390 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3391 unsigned int regbase = mc->regbase;
3392 unsigned int regcount = mc->regcount;
3393 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3394 unsigned int regwmask = (1<<regwshift)-1;
3395 unsigned int invert = mc->invert;
3396 unsigned long mask = (1UL<<mc->nbits)-1;
3398 long val = ucontrol->value.integer.value[0];
3399 unsigned int i, regval, regmask;
3405 for (i = 0; i < regcount; i++) {
3406 regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
3407 regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
3408 err = snd_soc_update_bits_locked(codec, regbase+i,
3416 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
3419 * snd_soc_get_strobe - strobe get callback
3420 * @kcontrol: mixer control
3421 * @ucontrol: control element information
3423 * Callback get the value of a strobe mixer control.
3425 * Returns 0 for success.
3427 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
3428 struct snd_ctl_elem_value *ucontrol)
3430 struct soc_mixer_control *mc =
3431 (struct soc_mixer_control *)kcontrol->private_value;
3432 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3433 unsigned int reg = mc->reg;
3434 unsigned int shift = mc->shift;
3435 unsigned int mask = 1 << shift;
3436 unsigned int invert = mc->invert != 0;
3437 unsigned int val = snd_soc_read(codec, reg) & mask;
3439 if (shift != 0 && val != 0)
3441 ucontrol->value.enumerated.item[0] = val ^ invert;
3445 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
3448 * snd_soc_put_strobe - strobe put callback
3449 * @kcontrol: mixer control
3450 * @ucontrol: control element information
3452 * Callback strobe a register bit to high then low (or the inverse)
3453 * in one pass of a single mixer enum control.
3455 * Returns 1 for success.
3457 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
3458 struct snd_ctl_elem_value *ucontrol)
3460 struct soc_mixer_control *mc =
3461 (struct soc_mixer_control *)kcontrol->private_value;
3462 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3463 unsigned int reg = mc->reg;
3464 unsigned int shift = mc->shift;
3465 unsigned int mask = 1 << shift;
3466 unsigned int invert = mc->invert != 0;
3467 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
3468 unsigned int val1 = (strobe ^ invert) ? mask : 0;
3469 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
3472 err = snd_soc_update_bits_locked(codec, reg, mask, val1);
3476 err = snd_soc_update_bits_locked(codec, reg, mask, val2);
3479 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);
3482 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3484 * @clk_id: DAI specific clock ID
3485 * @freq: new clock frequency in Hz
3486 * @dir: new clock direction - input/output.
3488 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3490 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
3491 unsigned int freq, int dir)
3493 if (dai->driver && dai->driver->ops->set_sysclk)
3494 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
3495 else if (dai->codec && dai->codec->driver->set_sysclk)
3496 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
3501 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
3504 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3506 * @clk_id: DAI specific clock ID
3507 * @source: Source for the clock
3508 * @freq: new clock frequency in Hz
3509 * @dir: new clock direction - input/output.
3511 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3513 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
3514 int source, unsigned int freq, int dir)
3516 if (codec->driver->set_sysclk)
3517 return codec->driver->set_sysclk(codec, clk_id, source,
3522 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
3525 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3527 * @div_id: DAI specific clock divider ID
3528 * @div: new clock divisor.
3530 * Configures the clock dividers. This is used to derive the best DAI bit and
3531 * frame clocks from the system or master clock. It's best to set the DAI bit
3532 * and frame clocks as low as possible to save system power.
3534 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
3535 int div_id, int div)
3537 if (dai->driver && dai->driver->ops->set_clkdiv)
3538 return dai->driver->ops->set_clkdiv(dai, div_id, div);
3542 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
3545 * snd_soc_dai_set_pll - configure DAI PLL.
3547 * @pll_id: DAI specific PLL ID
3548 * @source: DAI specific source for the PLL
3549 * @freq_in: PLL input clock frequency in Hz
3550 * @freq_out: requested PLL output clock frequency in Hz
3552 * Configures and enables PLL to generate output clock based on input clock.
3554 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
3555 unsigned int freq_in, unsigned int freq_out)
3557 if (dai->driver && dai->driver->ops->set_pll)
3558 return dai->driver->ops->set_pll(dai, pll_id, source,
3560 else if (dai->codec && dai->codec->driver->set_pll)
3561 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
3566 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
3569 * snd_soc_codec_set_pll - configure codec PLL.
3571 * @pll_id: DAI specific PLL ID
3572 * @source: DAI specific source for the PLL
3573 * @freq_in: PLL input clock frequency in Hz
3574 * @freq_out: requested PLL output clock frequency in Hz
3576 * Configures and enables PLL to generate output clock based on input clock.
3578 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
3579 unsigned int freq_in, unsigned int freq_out)
3581 if (codec->driver->set_pll)
3582 return codec->driver->set_pll(codec, pll_id, source,
3587 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
3590 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
3592 * @ratio Ratio of BCLK to Sample rate.
3594 * Configures the DAI for a preset BCLK to sample rate ratio.
3596 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
3598 if (dai->driver && dai->driver->ops->set_bclk_ratio)
3599 return dai->driver->ops->set_bclk_ratio(dai, ratio);
3603 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);
3606 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3608 * @fmt: SND_SOC_DAIFMT_ format value.
3610 * Configures the DAI hardware format and clocking.
3612 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
3614 if (dai->driver == NULL)
3616 if (dai->driver->ops->set_fmt == NULL)
3618 return dai->driver->ops->set_fmt(dai, fmt);
3620 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
3623 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
3624 * @slots: Number of slots in use.
3625 * @tx_mask: bitmask representing active TX slots.
3626 * @rx_mask: bitmask representing active RX slots.
3628 * Generates the TDM tx and rx slot default masks for DAI.
3630 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
3631 unsigned int *tx_mask,
3632 unsigned int *rx_mask)
3634 if (*tx_mask || *rx_mask)
3640 *tx_mask = (1 << slots) - 1;
3641 *rx_mask = (1 << slots) - 1;
3647 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3649 * @tx_mask: bitmask representing active TX slots.
3650 * @rx_mask: bitmask representing active RX slots.
3651 * @slots: Number of slots in use.
3652 * @slot_width: Width in bits for each slot.
3654 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3657 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
3658 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3660 if (dai->driver && dai->driver->ops->xlate_tdm_slot_mask)
3661 dai->driver->ops->xlate_tdm_slot_mask(slots,
3662 &tx_mask, &rx_mask);
3664 snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
3666 if (dai->driver && dai->driver->ops->set_tdm_slot)
3667 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3672 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3675 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3677 * @tx_num: how many TX channels
3678 * @tx_slot: pointer to an array which imply the TX slot number channel
3680 * @rx_num: how many RX channels
3681 * @rx_slot: pointer to an array which imply the RX slot number channel
3684 * configure the relationship between channel number and TDM slot number.
3686 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3687 unsigned int tx_num, unsigned int *tx_slot,
3688 unsigned int rx_num, unsigned int *rx_slot)
3690 if (dai->driver && dai->driver->ops->set_channel_map)
3691 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3696 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3699 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3701 * @tristate: tristate enable
3703 * Tristates the DAI so that others can use it.
3705 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3707 if (dai->driver && dai->driver->ops->set_tristate)
3708 return dai->driver->ops->set_tristate(dai, tristate);
3712 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3715 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3717 * @mute: mute enable
3718 * @direction: stream to mute
3720 * Mutes the DAI DAC.
3722 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
3728 if (dai->driver->ops->mute_stream)
3729 return dai->driver->ops->mute_stream(dai, mute, direction);
3730 else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
3731 dai->driver->ops->digital_mute)
3732 return dai->driver->ops->digital_mute(dai, mute);
3736 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3739 * snd_soc_register_card - Register a card with the ASoC core
3741 * @card: Card to register
3744 int snd_soc_register_card(struct snd_soc_card *card)
3748 if (!card->name || !card->dev)
3751 for (i = 0; i < card->num_links; i++) {
3752 struct snd_soc_dai_link *link = &card->dai_link[i];
3755 * Codec must be specified by 1 of name or OF node,
3756 * not both or neither.
3758 if (!!link->codec_name == !!link->codec_of_node) {
3760 "ASoC: Neither/both codec name/of_node are set for %s\n",
3764 /* Codec DAI name must be specified */
3765 if (!link->codec_dai_name) {
3767 "ASoC: codec_dai_name not set for %s\n",
3773 * Platform may be specified by either name or OF node, but
3774 * can be left unspecified, and a dummy platform will be used.
3776 if (link->platform_name && link->platform_of_node) {
3778 "ASoC: Both platform name/of_node are set for %s\n",
3784 * CPU device may be specified by either name or OF node, but
3785 * can be left unspecified, and will be matched based on DAI
3788 if (link->cpu_name && link->cpu_of_node) {
3790 "ASoC: Neither/both cpu name/of_node are set for %s\n",
3795 * At least one of CPU DAI name or CPU device name/node must be
3798 if (!link->cpu_dai_name &&
3799 !(link->cpu_name || link->cpu_of_node)) {
3801 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
3807 dev_set_drvdata(card->dev, card);
3809 snd_soc_initialize_card_lists(card);
3811 soc_init_card_debugfs(card);
3813 card->rtd = devm_kzalloc(card->dev,
3814 sizeof(struct snd_soc_pcm_runtime) *
3815 (card->num_links + card->num_aux_devs),
3817 if (card->rtd == NULL)
3820 card->rtd_aux = &card->rtd[card->num_links];
3822 for (i = 0; i < card->num_links; i++)
3823 card->rtd[i].dai_link = &card->dai_link[i];
3825 INIT_LIST_HEAD(&card->list);
3826 INIT_LIST_HEAD(&card->dapm_dirty);
3827 card->instantiated = 0;
3828 mutex_init(&card->mutex);
3829 mutex_init(&card->dapm_mutex);
3831 ret = snd_soc_instantiate_card(card);
3833 soc_cleanup_card_debugfs(card);
3835 /* deactivate pins to sleep state */
3836 for (i = 0; i < card->num_rtd; i++) {
3837 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
3838 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
3839 if (!codec_dai->active)
3840 pinctrl_pm_select_sleep_state(codec_dai->dev);
3841 if (!cpu_dai->active)
3842 pinctrl_pm_select_sleep_state(cpu_dai->dev);
3847 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3850 * snd_soc_unregister_card - Unregister a card with the ASoC core
3852 * @card: Card to unregister
3855 int snd_soc_unregister_card(struct snd_soc_card *card)
3857 if (card->instantiated)
3858 soc_cleanup_card_resources(card);
3859 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
3863 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3866 * Simplify DAI link configuration by removing ".-1" from device names
3867 * and sanitizing names.
3869 static char *fmt_single_name(struct device *dev, int *id)
3871 char *found, name[NAME_SIZE];
3874 if (dev_name(dev) == NULL)
3877 strlcpy(name, dev_name(dev), NAME_SIZE);
3879 /* are we a "%s.%d" name (platform and SPI components) */
3880 found = strstr(name, dev->driver->name);
3883 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3885 /* discard ID from name if ID == -1 */
3887 found[strlen(dev->driver->name)] = '\0';
3891 /* I2C component devices are named "bus-addr" */
3892 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3893 char tmp[NAME_SIZE];
3895 /* create unique ID number from I2C addr and bus */
3896 *id = ((id1 & 0xffff) << 16) + id2;
3898 /* sanitize component name for DAI link creation */
3899 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3900 strlcpy(name, tmp, NAME_SIZE);
3905 return kstrdup(name, GFP_KERNEL);
3909 * Simplify DAI link naming for single devices with multiple DAIs by removing
3910 * any ".-1" and using the DAI name (instead of device name).
3912 static inline char *fmt_multiple_name(struct device *dev,
3913 struct snd_soc_dai_driver *dai_drv)
3915 if (dai_drv->name == NULL) {
3917 "ASoC: error - multiple DAI %s registered with no name\n",
3922 return kstrdup(dai_drv->name, GFP_KERNEL);
3926 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
3928 * @component: The component for which the DAIs should be unregistered
3930 static void snd_soc_unregister_dais(struct snd_soc_component *component)
3932 struct snd_soc_dai *dai, *_dai;
3934 list_for_each_entry_safe(dai, _dai, &component->dai_list, list) {
3935 dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
3937 list_del(&dai->list);
3944 * snd_soc_register_dais - Register a DAI with the ASoC core
3946 * @component: The component the DAIs are registered for
3947 * @codec: The CODEC that the DAIs are registered for, NULL if the component is
3949 * @dai_drv: DAI driver to use for the DAIs
3950 * @count: Number of DAIs
3951 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
3954 static int snd_soc_register_dais(struct snd_soc_component *component,
3955 struct snd_soc_codec *codec, struct snd_soc_dai_driver *dai_drv,
3956 size_t count, bool legacy_dai_naming)
3958 struct device *dev = component->dev;
3959 struct snd_soc_dai *dai;
3963 dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
3965 for (i = 0; i < count; i++) {
3967 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3974 * Back in the old days when we still had component-less DAIs,
3975 * instead of having a static name, component-less DAIs would
3976 * inherit the name of the parent device so it is possible to
3977 * register multiple instances of the DAI. We still need to keep
3978 * the same naming style even though those DAIs are not
3979 * component-less anymore.
3981 if (count == 1 && legacy_dai_naming) {
3982 dai->name = fmt_single_name(dev, &dai->id);
3984 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3986 dai->id = dai_drv[i].id;
3990 if (dai->name == NULL) {
3996 dai->component = component;
3999 dai->driver = &dai_drv[i];
4000 dai->dapm.dev = dev;
4001 if (!dai->driver->ops)
4002 dai->driver->ops = &null_dai_ops;
4005 dai->dapm.idle_bias_off = 1;
4007 list_add(&dai->list, &component->dai_list);
4009 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
4015 snd_soc_unregister_dais(component);
4021 * snd_soc_register_component - Register a component with the ASoC core
4025 __snd_soc_register_component(struct device *dev,
4026 struct snd_soc_component *cmpnt,
4027 const struct snd_soc_component_driver *cmpnt_drv,
4028 struct snd_soc_codec *codec,
4029 struct snd_soc_dai_driver *dai_drv,
4030 int num_dai, bool allow_single_dai)
4034 dev_dbg(dev, "component register %s\n", dev_name(dev));
4037 dev_err(dev, "ASoC: Failed to connecting component\n");
4041 cmpnt->name = fmt_single_name(dev, &cmpnt->id);
4043 dev_err(dev, "ASoC: Failed to simplifying name\n");
4048 cmpnt->driver = cmpnt_drv;
4049 cmpnt->dai_drv = dai_drv;
4050 cmpnt->num_dai = num_dai;
4051 INIT_LIST_HEAD(&cmpnt->dai_list);
4053 ret = snd_soc_register_dais(cmpnt, codec, dai_drv, num_dai,
4056 dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret);
4057 goto error_component_name;
4060 mutex_lock(&client_mutex);
4061 list_add(&cmpnt->list, &component_list);
4062 mutex_unlock(&client_mutex);
4064 dev_dbg(cmpnt->dev, "ASoC: Registered component '%s'\n", cmpnt->name);
4068 error_component_name:
4074 int snd_soc_register_component(struct device *dev,
4075 const struct snd_soc_component_driver *cmpnt_drv,
4076 struct snd_soc_dai_driver *dai_drv,
4079 struct snd_soc_component *cmpnt;
4081 cmpnt = devm_kzalloc(dev, sizeof(*cmpnt), GFP_KERNEL);
4083 dev_err(dev, "ASoC: Failed to allocate memory\n");
4087 cmpnt->ignore_pmdown_time = true;
4089 return __snd_soc_register_component(dev, cmpnt, cmpnt_drv, NULL,
4090 dai_drv, num_dai, true);
4092 EXPORT_SYMBOL_GPL(snd_soc_register_component);
4095 * snd_soc_unregister_component - Unregister a component from the ASoC core
4098 void snd_soc_unregister_component(struct device *dev)
4100 struct snd_soc_component *cmpnt;
4102 list_for_each_entry(cmpnt, &component_list, list) {
4103 if (dev == cmpnt->dev)
4109 snd_soc_unregister_dais(cmpnt);
4111 mutex_lock(&client_mutex);
4112 list_del(&cmpnt->list);
4113 mutex_unlock(&client_mutex);
4115 dev_dbg(dev, "ASoC: Unregistered component '%s'\n", cmpnt->name);
4118 EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
4121 * snd_soc_add_platform - Add a platform to the ASoC core
4122 * @dev: The parent device for the platform
4123 * @platform: The platform to add
4124 * @platform_driver: The driver for the platform
4126 int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
4127 const struct snd_soc_platform_driver *platform_drv)
4129 /* create platform component name */
4130 platform->name = fmt_single_name(dev, &platform->id);
4131 if (platform->name == NULL)
4134 platform->dev = dev;
4135 platform->driver = platform_drv;
4136 platform->dapm.dev = dev;
4137 platform->dapm.platform = platform;
4138 platform->dapm.stream_event = platform_drv->stream_event;
4139 mutex_init(&platform->mutex);
4141 mutex_lock(&client_mutex);
4142 list_add(&platform->list, &platform_list);
4143 mutex_unlock(&client_mutex);
4145 dev_dbg(dev, "ASoC: Registered platform '%s'\n", platform->name);
4149 EXPORT_SYMBOL_GPL(snd_soc_add_platform);
4152 * snd_soc_register_platform - Register a platform with the ASoC core
4154 * @platform: platform to register
4156 int snd_soc_register_platform(struct device *dev,
4157 const struct snd_soc_platform_driver *platform_drv)
4159 struct snd_soc_platform *platform;
4162 dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
4164 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
4165 if (platform == NULL)
4168 ret = snd_soc_add_platform(dev, platform, platform_drv);
4174 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
4177 * snd_soc_remove_platform - Remove a platform from the ASoC core
4178 * @platform: the platform to remove
4180 void snd_soc_remove_platform(struct snd_soc_platform *platform)
4182 mutex_lock(&client_mutex);
4183 list_del(&platform->list);
4184 mutex_unlock(&client_mutex);
4186 dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
4188 kfree(platform->name);
4190 EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
4192 struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
4194 struct snd_soc_platform *platform;
4196 list_for_each_entry(platform, &platform_list, list) {
4197 if (dev == platform->dev)
4203 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
4206 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
4208 * @platform: platform to unregister
4210 void snd_soc_unregister_platform(struct device *dev)
4212 struct snd_soc_platform *platform;
4214 platform = snd_soc_lookup_platform(dev);
4218 snd_soc_remove_platform(platform);
4221 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
4223 static u64 codec_format_map[] = {
4224 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
4225 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
4226 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
4227 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
4228 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
4229 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
4230 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4231 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4232 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
4233 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
4234 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
4235 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
4236 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
4237 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
4238 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
4239 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
4242 /* Fix up the DAI formats for endianness: codecs don't actually see
4243 * the endianness of the data but we're using the CPU format
4244 * definitions which do need to include endianness so we ensure that
4245 * codec DAIs always have both big and little endian variants set.
4247 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
4251 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
4252 if (stream->formats & codec_format_map[i])
4253 stream->formats |= codec_format_map[i];
4257 * snd_soc_register_codec - Register a codec with the ASoC core
4259 * @codec: codec to register
4261 int snd_soc_register_codec(struct device *dev,
4262 const struct snd_soc_codec_driver *codec_drv,
4263 struct snd_soc_dai_driver *dai_drv,
4266 struct snd_soc_codec *codec;
4269 dev_dbg(dev, "codec register %s\n", dev_name(dev));
4271 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
4275 /* create CODEC component name */
4276 codec->name = fmt_single_name(dev, &codec->id);
4277 if (codec->name == NULL) {
4282 codec->write = codec_drv->write;
4283 codec->read = codec_drv->read;
4284 codec->volatile_register = codec_drv->volatile_register;
4285 codec->readable_register = codec_drv->readable_register;
4286 codec->writable_register = codec_drv->writable_register;
4287 codec->component.ignore_pmdown_time = codec_drv->ignore_pmdown_time;
4288 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
4289 codec->dapm.dev = dev;
4290 codec->dapm.codec = codec;
4291 codec->dapm.seq_notifier = codec_drv->seq_notifier;
4292 codec->dapm.stream_event = codec_drv->stream_event;
4294 codec->driver = codec_drv;
4295 codec->num_dai = num_dai;
4296 mutex_init(&codec->mutex);
4298 for (i = 0; i < num_dai; i++) {
4299 fixup_codec_formats(&dai_drv[i].playback);
4300 fixup_codec_formats(&dai_drv[i].capture);
4303 mutex_lock(&client_mutex);
4304 list_add(&codec->list, &codec_list);
4305 mutex_unlock(&client_mutex);
4307 /* register component */
4308 ret = __snd_soc_register_component(dev, &codec->component,
4309 &codec_drv->component_driver,
4310 codec, dai_drv, num_dai, false);
4312 dev_err(codec->dev, "ASoC: Failed to regster component: %d\n", ret);
4313 goto fail_codec_name;
4316 dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n", codec->name);
4320 mutex_lock(&client_mutex);
4321 list_del(&codec->list);
4322 mutex_unlock(&client_mutex);
4329 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
4332 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4334 * @codec: codec to unregister
4336 void snd_soc_unregister_codec(struct device *dev)
4338 struct snd_soc_codec *codec;
4340 list_for_each_entry(codec, &codec_list, list) {
4341 if (dev == codec->dev)
4347 snd_soc_unregister_component(dev);
4349 mutex_lock(&client_mutex);
4350 list_del(&codec->list);
4351 mutex_unlock(&client_mutex);
4353 dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n", codec->name);
4355 snd_soc_cache_exit(codec);
4359 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
4361 /* Retrieve a card's name from device tree */
4362 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
4363 const char *propname)
4365 struct device_node *np = card->dev->of_node;
4368 ret = of_property_read_string_index(np, propname, 0, &card->name);
4370 * EINVAL means the property does not exist. This is fine providing
4371 * card->name was previously set, which is checked later in
4372 * snd_soc_register_card.
4374 if (ret < 0 && ret != -EINVAL) {
4376 "ASoC: Property '%s' could not be read: %d\n",
4383 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
4385 static const struct snd_soc_dapm_widget simple_widgets[] = {
4386 SND_SOC_DAPM_MIC("Microphone", NULL),
4387 SND_SOC_DAPM_LINE("Line", NULL),
4388 SND_SOC_DAPM_HP("Headphone", NULL),
4389 SND_SOC_DAPM_SPK("Speaker", NULL),
4392 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
4393 const char *propname)
4395 struct device_node *np = card->dev->of_node;
4396 struct snd_soc_dapm_widget *widgets;
4397 const char *template, *wname;
4398 int i, j, num_widgets, ret;
4400 num_widgets = of_property_count_strings(np, propname);
4401 if (num_widgets < 0) {
4403 "ASoC: Property '%s' does not exist\n", propname);
4406 if (num_widgets & 1) {
4408 "ASoC: Property '%s' length is not even\n", propname);
4414 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4419 widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets),
4423 "ASoC: Could not allocate memory for widgets\n");
4427 for (i = 0; i < num_widgets; i++) {
4428 ret = of_property_read_string_index(np, propname,
4432 "ASoC: Property '%s' index %d read error:%d\n",
4433 propname, 2 * i, ret);
4437 for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) {
4438 if (!strncmp(template, simple_widgets[j].name,
4439 strlen(simple_widgets[j].name))) {
4440 widgets[i] = simple_widgets[j];
4445 if (j >= ARRAY_SIZE(simple_widgets)) {
4447 "ASoC: DAPM widget '%s' is not supported\n",
4452 ret = of_property_read_string_index(np, propname,
4457 "ASoC: Property '%s' index %d read error:%d\n",
4458 propname, (2 * i) + 1, ret);
4462 widgets[i].name = wname;
4465 card->dapm_widgets = widgets;
4466 card->num_dapm_widgets = num_widgets;
4470 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets);
4472 int snd_soc_of_parse_tdm_slot(struct device_node *np,
4473 unsigned int *slots,
4474 unsigned int *slot_width)
4479 if (of_property_read_bool(np, "dai-tdm-slot-num")) {
4480 ret = of_property_read_u32(np, "dai-tdm-slot-num", &val);
4488 if (of_property_read_bool(np, "dai-tdm-slot-width")) {
4489 ret = of_property_read_u32(np, "dai-tdm-slot-width", &val);
4499 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot);
4501 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
4502 const char *propname)
4504 struct device_node *np = card->dev->of_node;
4506 struct snd_soc_dapm_route *routes;
4509 num_routes = of_property_count_strings(np, propname);
4510 if (num_routes < 0 || num_routes & 1) {
4512 "ASoC: Property '%s' does not exist or its length is not even\n",
4518 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4523 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
4527 "ASoC: Could not allocate DAPM route table\n");
4531 for (i = 0; i < num_routes; i++) {
4532 ret = of_property_read_string_index(np, propname,
4533 2 * i, &routes[i].sink);
4536 "ASoC: Property '%s' index %d could not be read: %d\n",
4537 propname, 2 * i, ret);
4540 ret = of_property_read_string_index(np, propname,
4541 (2 * i) + 1, &routes[i].source);
4544 "ASoC: Property '%s' index %d could not be read: %d\n",
4545 propname, (2 * i) + 1, ret);
4550 card->num_dapm_routes = num_routes;
4551 card->dapm_routes = routes;
4555 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
4557 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
4562 unsigned int format = 0;
4568 } of_fmt_table[] = {
4569 { "i2s", SND_SOC_DAIFMT_I2S },
4570 { "right_j", SND_SOC_DAIFMT_RIGHT_J },
4571 { "left_j", SND_SOC_DAIFMT_LEFT_J },
4572 { "dsp_a", SND_SOC_DAIFMT_DSP_A },
4573 { "dsp_b", SND_SOC_DAIFMT_DSP_B },
4574 { "ac97", SND_SOC_DAIFMT_AC97 },
4575 { "pdm", SND_SOC_DAIFMT_PDM},
4576 { "msb", SND_SOC_DAIFMT_MSB },
4577 { "lsb", SND_SOC_DAIFMT_LSB },
4584 * check "[prefix]format = xxx"
4585 * SND_SOC_DAIFMT_FORMAT_MASK area
4587 snprintf(prop, sizeof(prop), "%sformat", prefix);
4588 ret = of_property_read_string(np, prop, &str);
4590 for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
4591 if (strcmp(str, of_fmt_table[i].name) == 0) {
4592 format |= of_fmt_table[i].val;
4599 * check "[prefix]continuous-clock"
4600 * SND_SOC_DAIFMT_CLOCK_MASK area
4602 snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
4603 if (of_get_property(np, prop, NULL))
4604 format |= SND_SOC_DAIFMT_CONT;
4606 format |= SND_SOC_DAIFMT_GATED;
4609 * check "[prefix]bitclock-inversion"
4610 * check "[prefix]frame-inversion"
4611 * SND_SOC_DAIFMT_INV_MASK area
4613 snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
4614 bit = !!of_get_property(np, prop, NULL);
4616 snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
4617 frame = !!of_get_property(np, prop, NULL);
4619 switch ((bit << 4) + frame) {
4621 format |= SND_SOC_DAIFMT_IB_IF;
4624 format |= SND_SOC_DAIFMT_IB_NF;
4627 format |= SND_SOC_DAIFMT_NB_IF;
4630 /* SND_SOC_DAIFMT_NB_NF is default */
4635 * check "[prefix]bitclock-master"
4636 * check "[prefix]frame-master"
4637 * SND_SOC_DAIFMT_MASTER_MASK area
4639 snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
4640 bit = !!of_get_property(np, prop, NULL);
4642 snprintf(prop, sizeof(prop), "%sframe-master", prefix);
4643 frame = !!of_get_property(np, prop, NULL);
4645 switch ((bit << 4) + frame) {
4647 format |= SND_SOC_DAIFMT_CBM_CFM;
4650 format |= SND_SOC_DAIFMT_CBM_CFS;
4653 format |= SND_SOC_DAIFMT_CBS_CFM;
4656 format |= SND_SOC_DAIFMT_CBS_CFS;
4662 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
4664 int snd_soc_of_get_dai_name(struct device_node *of_node,
4665 const char **dai_name)
4667 struct snd_soc_component *pos;
4668 struct of_phandle_args args;
4671 ret = of_parse_phandle_with_args(of_node, "sound-dai",
4672 "#sound-dai-cells", 0, &args);
4676 ret = -EPROBE_DEFER;
4678 mutex_lock(&client_mutex);
4679 list_for_each_entry(pos, &component_list, list) {
4680 if (pos->dev->of_node != args.np)
4683 if (pos->driver->of_xlate_dai_name) {
4684 ret = pos->driver->of_xlate_dai_name(pos, &args, dai_name);
4688 switch (args.args_count) {
4690 id = 0; /* same as dai_drv[0] */
4700 if (id < 0 || id >= pos->num_dai) {
4707 *dai_name = pos->dai_drv[id].name;
4709 *dai_name = pos->name;
4714 mutex_unlock(&client_mutex);
4716 of_node_put(args.np);
4720 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
4722 static int __init snd_soc_init(void)
4724 #ifdef CONFIG_DEBUG_FS
4725 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
4726 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
4727 pr_warn("ASoC: Failed to create debugfs directory\n");
4728 snd_soc_debugfs_root = NULL;
4731 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
4733 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4735 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
4737 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4739 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
4740 &platform_list_fops))
4741 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4744 snd_soc_util_init();
4746 return platform_driver_register(&soc_driver);
4748 module_init(snd_soc_init);
4750 static void __exit snd_soc_exit(void)
4752 snd_soc_util_exit();
4754 #ifdef CONFIG_DEBUG_FS
4755 debugfs_remove_recursive(snd_soc_debugfs_root);
4757 platform_driver_unregister(&soc_driver);
4759 module_exit(snd_soc_exit);
4761 /* Module information */
4762 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4763 MODULE_DESCRIPTION("ALSA SoC Core");
4764 MODULE_LICENSE("GPL");
4765 MODULE_ALIAS("platform:soc-audio");