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->of_node && codec->dev->of_node != map->of_node)
1109 if (map->dev_name && strcmp(codec->name, map->dev_name))
1111 codec->name_prefix = map->name_prefix;
1116 static int soc_probe_codec(struct snd_soc_card *card,
1117 struct snd_soc_codec *codec)
1120 const struct snd_soc_codec_driver *driver = codec->driver;
1121 struct snd_soc_dai *dai;
1124 codec->dapm.card = card;
1125 soc_set_name_prefix(card, codec);
1127 if (!try_module_get(codec->dev->driver->owner))
1130 soc_init_codec_debugfs(codec);
1132 if (driver->dapm_widgets)
1133 snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
1134 driver->num_dapm_widgets);
1136 /* Create DAPM widgets for each DAI stream */
1137 list_for_each_entry(dai, &codec->component.dai_list, list)
1138 snd_soc_dapm_new_dai_widgets(&codec->dapm, dai);
1140 codec->dapm.idle_bias_off = driver->idle_bias_off;
1142 if (!codec->write && dev_get_regmap(codec->dev, NULL)) {
1143 /* Set the default I/O up try regmap */
1144 ret = snd_soc_codec_set_cache_io(codec, NULL);
1147 "Failed to set cache I/O: %d\n", ret);
1152 if (driver->probe) {
1153 ret = driver->probe(codec);
1156 "ASoC: failed to probe CODEC %d\n", ret);
1159 WARN(codec->dapm.idle_bias_off &&
1160 codec->dapm.bias_level != SND_SOC_BIAS_OFF,
1161 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1165 if (driver->controls)
1166 snd_soc_add_codec_controls(codec, driver->controls,
1167 driver->num_controls);
1168 if (driver->dapm_routes)
1169 snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
1170 driver->num_dapm_routes);
1172 /* mark codec as probed and add to card codec list */
1174 list_add(&codec->card_list, &card->codec_dev_list);
1175 list_add(&codec->dapm.list, &card->dapm_list);
1180 soc_cleanup_codec_debugfs(codec);
1181 module_put(codec->dev->driver->owner);
1186 static int soc_probe_platform(struct snd_soc_card *card,
1187 struct snd_soc_platform *platform)
1190 const struct snd_soc_platform_driver *driver = platform->driver;
1191 struct snd_soc_component *component;
1192 struct snd_soc_dai *dai;
1194 platform->card = card;
1195 platform->dapm.card = card;
1197 if (!try_module_get(platform->dev->driver->owner))
1200 soc_init_platform_debugfs(platform);
1202 if (driver->dapm_widgets)
1203 snd_soc_dapm_new_controls(&platform->dapm,
1204 driver->dapm_widgets, driver->num_dapm_widgets);
1206 /* Create DAPM widgets for each DAI stream */
1207 list_for_each_entry(component, &component_list, list) {
1208 if (component->dev != platform->dev)
1210 list_for_each_entry(dai, &component->dai_list, list)
1211 snd_soc_dapm_new_dai_widgets(&platform->dapm, dai);
1214 platform->dapm.idle_bias_off = 1;
1216 if (driver->probe) {
1217 ret = driver->probe(platform);
1219 dev_err(platform->dev,
1220 "ASoC: failed to probe platform %d\n", ret);
1225 if (driver->controls)
1226 snd_soc_add_platform_controls(platform, driver->controls,
1227 driver->num_controls);
1228 if (driver->dapm_routes)
1229 snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
1230 driver->num_dapm_routes);
1232 /* mark platform as probed and add to card platform list */
1233 platform->probed = 1;
1234 list_add(&platform->card_list, &card->platform_dev_list);
1235 list_add(&platform->dapm.list, &card->dapm_list);
1240 soc_cleanup_platform_debugfs(platform);
1241 module_put(platform->dev->driver->owner);
1246 static void rtd_release(struct device *dev)
1251 static int soc_post_component_init(struct snd_soc_card *card,
1252 struct snd_soc_codec *codec,
1253 int num, int dailess)
1255 struct snd_soc_dai_link *dai_link = NULL;
1256 struct snd_soc_aux_dev *aux_dev = NULL;
1257 struct snd_soc_pcm_runtime *rtd;
1262 dai_link = &card->dai_link[num];
1263 rtd = &card->rtd[num];
1264 name = dai_link->name;
1266 aux_dev = &card->aux_dev[num];
1267 rtd = &card->rtd_aux[num];
1268 name = aux_dev->name;
1272 /* do machine specific initialization */
1273 if (!dailess && dai_link->init)
1274 ret = dai_link->init(rtd);
1275 else if (dailess && aux_dev->init)
1276 ret = aux_dev->init(&codec->dapm);
1278 dev_err(card->dev, "ASoC: failed to init %s: %d\n", name, ret);
1282 /* register the rtd device */
1285 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1288 device_initialize(rtd->dev);
1289 rtd->dev->parent = card->dev;
1290 rtd->dev->release = rtd_release;
1291 rtd->dev->init_name = name;
1292 dev_set_drvdata(rtd->dev, rtd);
1293 mutex_init(&rtd->pcm_mutex);
1294 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1295 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1296 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1297 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1298 ret = device_add(rtd->dev);
1300 /* calling put_device() here to free the rtd->dev */
1301 put_device(rtd->dev);
1303 "ASoC: failed to register runtime device: %d\n", ret);
1306 rtd->dev_registered = 1;
1308 /* add DAPM sysfs entries for this codec */
1309 ret = snd_soc_dapm_sys_add(rtd->dev);
1312 "ASoC: failed to add codec dapm sysfs entries: %d\n", ret);
1314 /* add codec sysfs entries */
1315 ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
1318 "ASoC: failed to add codec sysfs files: %d\n", ret);
1320 #ifdef CONFIG_DEBUG_FS
1321 /* add DPCM sysfs entries */
1322 if (!dailess && !dai_link->dynamic)
1325 ret = soc_dpcm_debugfs_add(rtd);
1327 dev_err(rtd->dev, "ASoC: failed to add dpcm sysfs entries: %d\n", ret);
1334 static int soc_probe_link_components(struct snd_soc_card *card, int num,
1337 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1338 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1339 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1340 struct snd_soc_platform *platform = rtd->platform;
1343 /* probe the CPU-side component, if it is a CODEC */
1344 if (cpu_dai->codec &&
1345 !cpu_dai->codec->probed &&
1346 cpu_dai->codec->driver->probe_order == order) {
1347 ret = soc_probe_codec(card, cpu_dai->codec);
1352 /* probe the CODEC-side component */
1353 if (!codec_dai->codec->probed &&
1354 codec_dai->codec->driver->probe_order == order) {
1355 ret = soc_probe_codec(card, codec_dai->codec);
1360 /* probe the platform */
1361 if (!platform->probed &&
1362 platform->driver->probe_order == order) {
1363 ret = soc_probe_platform(card, platform);
1371 static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
1373 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1374 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1375 struct snd_soc_codec *codec = rtd->codec;
1376 struct snd_soc_platform *platform = rtd->platform;
1377 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1378 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1379 struct snd_soc_dapm_widget *play_w, *capture_w;
1382 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1383 card->name, num, order);
1385 /* config components */
1386 cpu_dai->platform = platform;
1387 codec_dai->card = card;
1388 cpu_dai->card = card;
1390 /* set default power off timeout */
1391 rtd->pmdown_time = pmdown_time;
1393 /* probe the cpu_dai */
1394 if (!cpu_dai->probed &&
1395 cpu_dai->driver->probe_order == order) {
1396 if (!cpu_dai->codec) {
1397 cpu_dai->dapm.card = card;
1398 if (!try_module_get(cpu_dai->dev->driver->owner))
1401 list_add(&cpu_dai->dapm.list, &card->dapm_list);
1404 if (cpu_dai->driver->probe) {
1405 ret = cpu_dai->driver->probe(cpu_dai);
1407 dev_err(cpu_dai->dev,
1408 "ASoC: failed to probe CPU DAI %s: %d\n",
1409 cpu_dai->name, ret);
1410 module_put(cpu_dai->dev->driver->owner);
1414 cpu_dai->probed = 1;
1415 /* mark cpu_dai as probed and add to card dai list */
1416 list_add(&cpu_dai->card_list, &card->dai_dev_list);
1419 /* probe the CODEC DAI */
1420 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
1421 if (codec_dai->driver->probe) {
1422 ret = codec_dai->driver->probe(codec_dai);
1424 dev_err(codec_dai->dev,
1425 "ASoC: failed to probe CODEC DAI %s: %d\n",
1426 codec_dai->name, ret);
1431 /* mark codec_dai as probed and add to card dai list */
1432 codec_dai->probed = 1;
1433 list_add(&codec_dai->card_list, &card->dai_dev_list);
1436 /* complete DAI probe during last probe */
1437 if (order != SND_SOC_COMP_ORDER_LAST)
1440 ret = soc_post_component_init(card, codec, num, 0);
1444 ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
1446 dev_warn(rtd->dev, "ASoC: failed to add pmdown_time sysfs: %d\n",
1449 if (cpu_dai->driver->compress_dai) {
1450 /*create compress_device"*/
1451 ret = soc_new_compress(rtd, num);
1453 dev_err(card->dev, "ASoC: can't create compress %s\n",
1454 dai_link->stream_name);
1459 if (!dai_link->params) {
1460 /* create the pcm */
1461 ret = soc_new_pcm(rtd, num);
1463 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1464 dai_link->stream_name, ret);
1468 INIT_DELAYED_WORK(&rtd->delayed_work,
1469 codec2codec_close_delayed_work);
1471 /* link the DAI widgets */
1472 play_w = codec_dai->playback_widget;
1473 capture_w = cpu_dai->capture_widget;
1474 if (play_w && capture_w) {
1475 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1478 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1479 play_w->name, capture_w->name, ret);
1484 play_w = cpu_dai->playback_widget;
1485 capture_w = codec_dai->capture_widget;
1486 if (play_w && capture_w) {
1487 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1490 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1491 play_w->name, capture_w->name, ret);
1498 /* add platform data for AC97 devices */
1499 if (rtd->codec_dai->driver->ac97_control)
1500 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1505 #ifdef CONFIG_SND_SOC_AC97_BUS
1506 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1510 /* Only instantiate AC97 if not already done by the adaptor
1511 * for the generic AC97 subsystem.
1513 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
1515 * It is possible that the AC97 device is already registered to
1516 * the device subsystem. This happens when the device is created
1517 * via snd_ac97_mixer(). Currently only SoC codec that does so
1518 * is the generic AC97 glue but others migh emerge.
1520 * In those cases we don't try to register the device again.
1522 if (!rtd->codec->ac97_created)
1525 ret = soc_ac97_dev_register(rtd->codec);
1527 dev_err(rtd->codec->dev,
1528 "ASoC: AC97 device register failed: %d\n", ret);
1532 rtd->codec->ac97_registered = 1;
1537 static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1539 if (codec->ac97_registered) {
1540 soc_ac97_dev_unregister(codec);
1541 codec->ac97_registered = 0;
1546 struct snd_soc_codec *soc_find_matching_codec(struct snd_soc_card *card, int num)
1548 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1549 struct snd_soc_codec *codec;
1551 /* find CODEC from registered CODECs */
1552 list_for_each_entry(codec, &codec_list, list) {
1553 if (aux_dev->codec_of_node &&
1554 (codec->dev->of_node != aux_dev->codec_of_node))
1556 if (aux_dev->codec_name && strcmp(codec->name, aux_dev->codec_name))
1564 static int soc_check_aux_dev(struct snd_soc_card *card, int num)
1566 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1567 const char *codecname = aux_dev->codec_name;
1568 struct snd_soc_codec *codec = soc_find_matching_codec(card, num);
1572 if (aux_dev->codec_of_node)
1573 codecname = of_node_full_name(aux_dev->codec_of_node);
1575 dev_err(card->dev, "ASoC: %s not registered\n", codecname);
1576 return -EPROBE_DEFER;
1579 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1581 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1582 const char *codecname = aux_dev->codec_name;
1584 struct snd_soc_codec *codec = soc_find_matching_codec(card, num);
1587 if (aux_dev->codec_of_node)
1588 codecname = of_node_full_name(aux_dev->codec_of_node);
1590 /* codec not found */
1591 dev_err(card->dev, "ASoC: codec %s not found", codecname);
1592 return -EPROBE_DEFER;
1595 if (codec->probed) {
1596 dev_err(codec->dev, "ASoC: codec already probed");
1600 ret = soc_probe_codec(card, codec);
1604 ret = soc_post_component_init(card, codec, num, 1);
1609 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1611 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1612 struct snd_soc_codec *codec = rtd->codec;
1614 /* unregister the rtd device */
1615 if (rtd->dev_registered) {
1616 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1617 device_unregister(rtd->dev);
1618 rtd->dev_registered = 0;
1621 if (codec && codec->probed)
1622 soc_remove_codec(codec);
1625 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec)
1629 if (codec->cache_init)
1632 ret = snd_soc_cache_init(codec);
1635 "ASoC: Failed to set cache compression type: %d\n",
1639 codec->cache_init = 1;
1643 static int snd_soc_instantiate_card(struct snd_soc_card *card)
1645 struct snd_soc_codec *codec;
1646 struct snd_soc_dai_link *dai_link;
1647 int ret, i, order, dai_fmt;
1649 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1652 for (i = 0; i < card->num_links; i++) {
1653 ret = soc_bind_dai_link(card, i);
1658 /* check aux_devs too */
1659 for (i = 0; i < card->num_aux_devs; i++) {
1660 ret = soc_check_aux_dev(card, i);
1665 /* initialize the register cache for each available codec */
1666 list_for_each_entry(codec, &codec_list, list) {
1667 if (codec->cache_init)
1669 ret = snd_soc_init_codec_cache(codec);
1674 /* card bind complete so register a sound card */
1675 ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1676 card->owner, 0, &card->snd_card);
1679 "ASoC: can't create sound card for card %s: %d\n",
1684 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1685 card->dapm.dev = card->dev;
1686 card->dapm.card = card;
1687 list_add(&card->dapm.list, &card->dapm_list);
1689 #ifdef CONFIG_DEBUG_FS
1690 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1693 #ifdef CONFIG_PM_SLEEP
1694 /* deferred resume work */
1695 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1698 if (card->dapm_widgets)
1699 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1700 card->num_dapm_widgets);
1702 /* initialise the sound card only once */
1704 ret = card->probe(card);
1706 goto card_probe_error;
1709 /* probe all components used by DAI links on this card */
1710 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1712 for (i = 0; i < card->num_links; i++) {
1713 ret = soc_probe_link_components(card, i, order);
1716 "ASoC: failed to instantiate card %d\n",
1723 /* probe all DAI links on this card */
1724 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1726 for (i = 0; i < card->num_links; i++) {
1727 ret = soc_probe_link_dais(card, i, order);
1730 "ASoC: failed to instantiate card %d\n",
1737 for (i = 0; i < card->num_aux_devs; i++) {
1738 ret = soc_probe_aux_dev(card, i);
1741 "ASoC: failed to add auxiliary devices %d\n",
1743 goto probe_aux_dev_err;
1747 snd_soc_dapm_link_dai_widgets(card);
1748 snd_soc_dapm_connect_dai_link_widgets(card);
1751 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1753 if (card->dapm_routes)
1754 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1755 card->num_dapm_routes);
1757 for (i = 0; i < card->num_links; i++) {
1758 dai_link = &card->dai_link[i];
1759 dai_fmt = dai_link->dai_fmt;
1762 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1764 if (ret != 0 && ret != -ENOTSUPP)
1765 dev_warn(card->rtd[i].codec_dai->dev,
1766 "ASoC: Failed to set DAI format: %d\n",
1770 /* If this is a regular CPU link there will be a platform */
1772 (dai_link->platform_name || dai_link->platform_of_node)) {
1773 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1775 if (ret != 0 && ret != -ENOTSUPP)
1776 dev_warn(card->rtd[i].cpu_dai->dev,
1777 "ASoC: Failed to set DAI format: %d\n",
1779 } else if (dai_fmt) {
1780 /* Flip the polarity for the "CPU" end */
1781 dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
1782 switch (dai_link->dai_fmt &
1783 SND_SOC_DAIFMT_MASTER_MASK) {
1784 case SND_SOC_DAIFMT_CBM_CFM:
1785 dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1787 case SND_SOC_DAIFMT_CBM_CFS:
1788 dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1790 case SND_SOC_DAIFMT_CBS_CFM:
1791 dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1793 case SND_SOC_DAIFMT_CBS_CFS:
1794 dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1798 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1800 if (ret != 0 && ret != -ENOTSUPP)
1801 dev_warn(card->rtd[i].cpu_dai->dev,
1802 "ASoC: Failed to set DAI format: %d\n",
1807 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1809 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1810 "%s", card->long_name ? card->long_name : card->name);
1811 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1812 "%s", card->driver_name ? card->driver_name : card->name);
1813 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1814 switch (card->snd_card->driver[i]) {
1820 if (!isalnum(card->snd_card->driver[i]))
1821 card->snd_card->driver[i] = '_';
1826 if (card->late_probe) {
1827 ret = card->late_probe(card);
1829 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
1831 goto probe_aux_dev_err;
1835 if (card->fully_routed)
1836 list_for_each_entry(codec, &card->codec_dev_list, card_list)
1837 snd_soc_dapm_auto_nc_codec_pins(codec);
1839 snd_soc_dapm_new_widgets(card);
1841 ret = snd_card_register(card->snd_card);
1843 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
1845 goto probe_aux_dev_err;
1848 #ifdef CONFIG_SND_SOC_AC97_BUS
1849 /* register any AC97 codecs */
1850 for (i = 0; i < card->num_rtd; i++) {
1851 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1854 "ASoC: failed to register AC97: %d\n", ret);
1856 soc_unregister_ac97_dai_link(card->rtd[i].codec);
1857 goto probe_aux_dev_err;
1862 card->instantiated = 1;
1863 snd_soc_dapm_sync(&card->dapm);
1864 mutex_unlock(&card->mutex);
1869 for (i = 0; i < card->num_aux_devs; i++)
1870 soc_remove_aux_dev(card, i);
1873 soc_remove_dai_links(card);
1879 snd_card_free(card->snd_card);
1882 mutex_unlock(&card->mutex);
1887 /* probes a new socdev */
1888 static int soc_probe(struct platform_device *pdev)
1890 struct snd_soc_card *card = platform_get_drvdata(pdev);
1893 * no card, so machine driver should be registering card
1894 * we should not be here in that case so ret error
1899 dev_warn(&pdev->dev,
1900 "ASoC: machine %s should use snd_soc_register_card()\n",
1903 /* Bodge while we unpick instantiation */
1904 card->dev = &pdev->dev;
1906 return snd_soc_register_card(card);
1909 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1913 /* make sure any delayed work runs */
1914 for (i = 0; i < card->num_rtd; i++) {
1915 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1916 flush_delayed_work(&rtd->delayed_work);
1919 /* remove auxiliary devices */
1920 for (i = 0; i < card->num_aux_devs; i++)
1921 soc_remove_aux_dev(card, i);
1923 /* remove and free each DAI */
1924 soc_remove_dai_links(card);
1926 soc_cleanup_card_debugfs(card);
1928 /* remove the card */
1932 snd_soc_dapm_free(&card->dapm);
1934 snd_card_free(card->snd_card);
1939 /* removes a socdev */
1940 static int soc_remove(struct platform_device *pdev)
1942 struct snd_soc_card *card = platform_get_drvdata(pdev);
1944 snd_soc_unregister_card(card);
1948 int snd_soc_poweroff(struct device *dev)
1950 struct snd_soc_card *card = dev_get_drvdata(dev);
1953 if (!card->instantiated)
1956 /* Flush out pmdown_time work - we actually do want to run it
1957 * now, we're shutting down so no imminent restart. */
1958 for (i = 0; i < card->num_rtd; i++) {
1959 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1960 flush_delayed_work(&rtd->delayed_work);
1963 snd_soc_dapm_shutdown(card);
1965 /* deactivate pins to sleep state */
1966 for (i = 0; i < card->num_rtd; i++) {
1967 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1968 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
1969 pinctrl_pm_select_sleep_state(codec_dai->dev);
1970 pinctrl_pm_select_sleep_state(cpu_dai->dev);
1975 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
1977 const struct dev_pm_ops snd_soc_pm_ops = {
1978 .suspend = snd_soc_suspend,
1979 .resume = snd_soc_resume,
1980 .freeze = snd_soc_suspend,
1981 .thaw = snd_soc_resume,
1982 .poweroff = snd_soc_poweroff,
1983 .restore = snd_soc_resume,
1985 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
1987 /* ASoC platform driver */
1988 static struct platform_driver soc_driver = {
1990 .name = "soc-audio",
1991 .owner = THIS_MODULE,
1992 .pm = &snd_soc_pm_ops,
1995 .remove = soc_remove,
1999 * snd_soc_codec_volatile_register: Report if a register is volatile.
2001 * @codec: CODEC to query.
2002 * @reg: Register to query.
2004 * Boolean function indiciating if a CODEC register is volatile.
2006 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
2009 if (codec->volatile_register)
2010 return codec->volatile_register(codec, reg);
2014 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
2017 * snd_soc_codec_readable_register: Report if a register is readable.
2019 * @codec: CODEC to query.
2020 * @reg: Register to query.
2022 * Boolean function indicating if a CODEC register is readable.
2024 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
2027 if (codec->readable_register)
2028 return codec->readable_register(codec, reg);
2032 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
2035 * snd_soc_codec_writable_register: Report if a register is writable.
2037 * @codec: CODEC to query.
2038 * @reg: Register to query.
2040 * Boolean function indicating if a CODEC register is writable.
2042 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
2045 if (codec->writable_register)
2046 return codec->writable_register(codec, reg);
2050 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
2052 int snd_soc_platform_read(struct snd_soc_platform *platform,
2057 if (!platform->driver->read) {
2058 dev_err(platform->dev, "ASoC: platform has no read back\n");
2062 ret = platform->driver->read(platform, reg);
2063 dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
2064 trace_snd_soc_preg_read(platform, reg, ret);
2068 EXPORT_SYMBOL_GPL(snd_soc_platform_read);
2070 int snd_soc_platform_write(struct snd_soc_platform *platform,
2071 unsigned int reg, unsigned int val)
2073 if (!platform->driver->write) {
2074 dev_err(platform->dev, "ASoC: platform has no write back\n");
2078 dev_dbg(platform->dev, "write %x = %x\n", reg, val);
2079 trace_snd_soc_preg_write(platform, reg, val);
2080 return platform->driver->write(platform, reg, val);
2082 EXPORT_SYMBOL_GPL(snd_soc_platform_write);
2085 * snd_soc_new_ac97_codec - initailise AC97 device
2086 * @codec: audio codec
2087 * @ops: AC97 bus operations
2088 * @num: AC97 codec number
2090 * Initialises AC97 codec resources for use by ad-hoc devices only.
2092 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
2093 struct snd_ac97_bus_ops *ops, int num)
2095 mutex_lock(&codec->mutex);
2097 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2098 if (codec->ac97 == NULL) {
2099 mutex_unlock(&codec->mutex);
2103 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
2104 if (codec->ac97->bus == NULL) {
2107 mutex_unlock(&codec->mutex);
2111 codec->ac97->bus->ops = ops;
2112 codec->ac97->num = num;
2115 * Mark the AC97 device to be created by us. This way we ensure that the
2116 * device will be registered with the device subsystem later on.
2118 codec->ac97_created = 1;
2120 mutex_unlock(&codec->mutex);
2123 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
2125 static struct snd_ac97_reset_cfg snd_ac97_rst_cfg;
2127 static void snd_soc_ac97_warm_reset(struct snd_ac97 *ac97)
2129 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2131 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_warm_reset);
2133 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 1);
2137 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2139 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2143 static void snd_soc_ac97_reset(struct snd_ac97 *ac97)
2145 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2147 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_reset);
2149 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2150 gpio_direction_output(snd_ac97_rst_cfg.gpio_sdata, 0);
2151 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 0);
2155 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 1);
2157 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2161 static int snd_soc_ac97_parse_pinctl(struct device *dev,
2162 struct snd_ac97_reset_cfg *cfg)
2165 struct pinctrl_state *state;
2169 p = devm_pinctrl_get(dev);
2171 dev_err(dev, "Failed to get pinctrl\n");
2176 state = pinctrl_lookup_state(p, "ac97-reset");
2177 if (IS_ERR(state)) {
2178 dev_err(dev, "Can't find pinctrl state ac97-reset\n");
2179 return PTR_RET(state);
2181 cfg->pstate_reset = state;
2183 state = pinctrl_lookup_state(p, "ac97-warm-reset");
2184 if (IS_ERR(state)) {
2185 dev_err(dev, "Can't find pinctrl state ac97-warm-reset\n");
2186 return PTR_RET(state);
2188 cfg->pstate_warm_reset = state;
2190 state = pinctrl_lookup_state(p, "ac97-running");
2191 if (IS_ERR(state)) {
2192 dev_err(dev, "Can't find pinctrl state ac97-running\n");
2193 return PTR_RET(state);
2195 cfg->pstate_run = state;
2197 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 0);
2199 dev_err(dev, "Can't find ac97-sync gpio\n");
2202 ret = devm_gpio_request(dev, gpio, "AC97 link sync");
2204 dev_err(dev, "Failed requesting ac97-sync gpio\n");
2207 cfg->gpio_sync = gpio;
2209 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 1);
2211 dev_err(dev, "Can't find ac97-sdata gpio %d\n", gpio);
2214 ret = devm_gpio_request(dev, gpio, "AC97 link sdata");
2216 dev_err(dev, "Failed requesting ac97-sdata gpio\n");
2219 cfg->gpio_sdata = gpio;
2221 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 2);
2223 dev_err(dev, "Can't find ac97-reset gpio\n");
2226 ret = devm_gpio_request(dev, gpio, "AC97 link reset");
2228 dev_err(dev, "Failed requesting ac97-reset gpio\n");
2231 cfg->gpio_reset = gpio;
2236 struct snd_ac97_bus_ops *soc_ac97_ops;
2237 EXPORT_SYMBOL_GPL(soc_ac97_ops);
2239 int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops)
2241 if (ops == soc_ac97_ops)
2244 if (soc_ac97_ops && ops)
2251 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops);
2254 * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions
2256 * This function sets the reset and warm_reset properties of ops and parses
2257 * the device node of pdev to get pinctrl states and gpio numbers to use.
2259 int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops,
2260 struct platform_device *pdev)
2262 struct device *dev = &pdev->dev;
2263 struct snd_ac97_reset_cfg cfg;
2266 ret = snd_soc_ac97_parse_pinctl(dev, &cfg);
2270 ret = snd_soc_set_ac97_ops(ops);
2274 ops->warm_reset = snd_soc_ac97_warm_reset;
2275 ops->reset = snd_soc_ac97_reset;
2277 snd_ac97_rst_cfg = cfg;
2280 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset);
2283 * snd_soc_free_ac97_codec - free AC97 codec device
2284 * @codec: audio codec
2286 * Frees AC97 codec device resources.
2288 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
2290 mutex_lock(&codec->mutex);
2291 #ifdef CONFIG_SND_SOC_AC97_BUS
2292 soc_unregister_ac97_dai_link(codec);
2294 kfree(codec->ac97->bus);
2297 codec->ac97_created = 0;
2298 mutex_unlock(&codec->mutex);
2300 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
2302 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
2306 ret = codec->read(codec, reg);
2307 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
2308 trace_snd_soc_reg_read(codec, reg, ret);
2312 EXPORT_SYMBOL_GPL(snd_soc_read);
2314 unsigned int snd_soc_write(struct snd_soc_codec *codec,
2315 unsigned int reg, unsigned int val)
2317 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
2318 trace_snd_soc_reg_write(codec, reg, val);
2319 return codec->write(codec, reg, val);
2321 EXPORT_SYMBOL_GPL(snd_soc_write);
2324 * snd_soc_update_bits - update codec register bits
2325 * @codec: audio codec
2326 * @reg: codec register
2327 * @mask: register mask
2330 * Writes new register value.
2332 * Returns 1 for change, 0 for no change, or negative error code.
2334 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
2335 unsigned int mask, unsigned int value)
2338 unsigned int old, new;
2341 if (codec->using_regmap) {
2342 ret = regmap_update_bits_check(codec->control_data, reg,
2343 mask, value, &change);
2345 ret = snd_soc_read(codec, reg);
2350 new = (old & ~mask) | (value & mask);
2351 change = old != new;
2353 ret = snd_soc_write(codec, reg, new);
2361 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
2364 * snd_soc_update_bits_locked - update codec register bits
2365 * @codec: audio codec
2366 * @reg: codec register
2367 * @mask: register mask
2370 * Writes new register value, and takes the codec mutex.
2372 * Returns 1 for change else 0.
2374 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
2375 unsigned short reg, unsigned int mask,
2380 mutex_lock(&codec->mutex);
2381 change = snd_soc_update_bits(codec, reg, mask, value);
2382 mutex_unlock(&codec->mutex);
2386 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
2389 * snd_soc_test_bits - test register for change
2390 * @codec: audio codec
2391 * @reg: codec register
2392 * @mask: register mask
2395 * Tests a register with a new value and checks if the new value is
2396 * different from the old value.
2398 * Returns 1 for change else 0.
2400 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
2401 unsigned int mask, unsigned int value)
2404 unsigned int old, new;
2406 old = snd_soc_read(codec, reg);
2407 new = (old & ~mask) | value;
2408 change = old != new;
2412 EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2415 * snd_soc_cnew - create new control
2416 * @_template: control template
2417 * @data: control private data
2418 * @long_name: control long name
2419 * @prefix: control name prefix
2421 * Create a new mixer control from a template control.
2423 * Returns 0 for success, else error.
2425 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2426 void *data, const char *long_name,
2429 struct snd_kcontrol_new template;
2430 struct snd_kcontrol *kcontrol;
2433 memcpy(&template, _template, sizeof(template));
2437 long_name = template.name;
2440 name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
2444 template.name = name;
2446 template.name = long_name;
2449 kcontrol = snd_ctl_new1(&template, data);
2455 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2457 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2458 const struct snd_kcontrol_new *controls, int num_controls,
2459 const char *prefix, void *data)
2463 for (i = 0; i < num_controls; i++) {
2464 const struct snd_kcontrol_new *control = &controls[i];
2465 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2466 control->name, prefix));
2468 dev_err(dev, "ASoC: Failed to add %s: %d\n",
2469 control->name, err);
2477 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
2480 struct snd_card *card = soc_card->snd_card;
2481 struct snd_kcontrol *kctl;
2483 if (unlikely(!name))
2486 list_for_each_entry(kctl, &card->controls, list)
2487 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
2491 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
2494 * snd_soc_add_codec_controls - add an array of controls to a codec.
2495 * Convenience function to add a list of controls. Many codecs were
2496 * duplicating this code.
2498 * @codec: codec to add controls to
2499 * @controls: array of controls to add
2500 * @num_controls: number of elements in the array
2502 * Return 0 for success, else error.
2504 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2505 const struct snd_kcontrol_new *controls, int num_controls)
2507 struct snd_card *card = codec->card->snd_card;
2509 return snd_soc_add_controls(card, codec->dev, controls, num_controls,
2510 codec->name_prefix, codec);
2512 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2515 * snd_soc_add_platform_controls - add an array of controls to a platform.
2516 * Convenience function to add a list of controls.
2518 * @platform: platform to add controls to
2519 * @controls: array of controls to add
2520 * @num_controls: number of elements in the array
2522 * Return 0 for success, else error.
2524 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2525 const struct snd_kcontrol_new *controls, int num_controls)
2527 struct snd_card *card = platform->card->snd_card;
2529 return snd_soc_add_controls(card, platform->dev, controls, num_controls,
2532 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2535 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2536 * Convenience function to add a list of controls.
2538 * @soc_card: SoC card to add controls to
2539 * @controls: array of controls to add
2540 * @num_controls: number of elements in the array
2542 * Return 0 for success, else error.
2544 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2545 const struct snd_kcontrol_new *controls, int num_controls)
2547 struct snd_card *card = soc_card->snd_card;
2549 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2552 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2555 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2556 * Convienience function to add a list of controls.
2558 * @dai: DAI to add controls to
2559 * @controls: array of controls to add
2560 * @num_controls: number of elements in the array
2562 * Return 0 for success, else error.
2564 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2565 const struct snd_kcontrol_new *controls, int num_controls)
2567 struct snd_card *card = dai->card->snd_card;
2569 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2572 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2575 * snd_soc_info_enum_double - enumerated double mixer info callback
2576 * @kcontrol: mixer control
2577 * @uinfo: control element information
2579 * Callback to provide information about a double enumerated
2582 * Returns 0 for success.
2584 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2585 struct snd_ctl_elem_info *uinfo)
2587 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2589 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2590 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2591 uinfo->value.enumerated.items = e->items;
2593 if (uinfo->value.enumerated.item >= e->items)
2594 uinfo->value.enumerated.item = e->items - 1;
2595 strlcpy(uinfo->value.enumerated.name,
2596 e->texts[uinfo->value.enumerated.item],
2597 sizeof(uinfo->value.enumerated.name));
2600 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2603 * snd_soc_get_enum_double - enumerated double mixer get callback
2604 * @kcontrol: mixer control
2605 * @ucontrol: control element information
2607 * Callback to get the value of a double enumerated mixer.
2609 * Returns 0 for success.
2611 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2612 struct snd_ctl_elem_value *ucontrol)
2614 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2615 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2616 unsigned int val, item;
2617 unsigned int reg_val;
2619 reg_val = snd_soc_read(codec, e->reg);
2620 val = (reg_val >> e->shift_l) & e->mask;
2621 item = snd_soc_enum_val_to_item(e, val);
2622 ucontrol->value.enumerated.item[0] = item;
2623 if (e->shift_l != e->shift_r) {
2624 val = (reg_val >> e->shift_l) & e->mask;
2625 item = snd_soc_enum_val_to_item(e, val);
2626 ucontrol->value.enumerated.item[1] = item;
2631 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2634 * snd_soc_put_enum_double - enumerated double mixer put callback
2635 * @kcontrol: mixer control
2636 * @ucontrol: control element information
2638 * Callback to set the value of a double enumerated mixer.
2640 * Returns 0 for success.
2642 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2643 struct snd_ctl_elem_value *ucontrol)
2645 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2646 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2647 unsigned int *item = ucontrol->value.enumerated.item;
2651 if (item[0] >= e->items)
2653 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
2654 mask = e->mask << e->shift_l;
2655 if (e->shift_l != e->shift_r) {
2656 if (item[1] >= e->items)
2658 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
2659 mask |= e->mask << e->shift_r;
2662 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2664 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2667 * snd_soc_read_signed - Read a codec register and interprete as signed value
2669 * @reg: Register to read
2670 * @mask: Mask to use after shifting the register value
2671 * @shift: Right shift of register value
2672 * @sign_bit: Bit that describes if a number is negative or not.
2674 * This functions reads a codec register. The register value is shifted right
2675 * by 'shift' bits and masked with the given 'mask'. Afterwards it translates
2676 * the given registervalue into a signed integer if sign_bit is non-zero.
2678 * Returns the register value as signed int.
2680 static int snd_soc_read_signed(struct snd_soc_codec *codec, unsigned int reg,
2681 unsigned int mask, unsigned int shift, unsigned int sign_bit)
2686 val = (snd_soc_read(codec, reg) >> shift) & mask;
2691 /* non-negative number */
2692 if (!(val & BIT(sign_bit)))
2698 * The register most probably does not contain a full-sized int.
2699 * Instead we have an arbitrary number of bits in a signed
2700 * representation which has to be translated into a full-sized int.
2701 * This is done by filling up all bits above the sign-bit.
2703 ret |= ~((int)(BIT(sign_bit) - 1));
2709 * snd_soc_info_volsw - single mixer info callback
2710 * @kcontrol: mixer control
2711 * @uinfo: control element information
2713 * Callback to provide information about a single mixer control, or a double
2714 * mixer control that spans 2 registers.
2716 * Returns 0 for success.
2718 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2719 struct snd_ctl_elem_info *uinfo)
2721 struct soc_mixer_control *mc =
2722 (struct soc_mixer_control *)kcontrol->private_value;
2725 if (!mc->platform_max)
2726 mc->platform_max = mc->max;
2727 platform_max = mc->platform_max;
2729 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2730 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2732 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2734 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2735 uinfo->value.integer.min = 0;
2736 uinfo->value.integer.max = platform_max - mc->min;
2739 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2742 * snd_soc_get_volsw - single mixer get callback
2743 * @kcontrol: mixer control
2744 * @ucontrol: control element information
2746 * Callback to get the value of a single mixer control, or a double mixer
2747 * control that spans 2 registers.
2749 * Returns 0 for success.
2751 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2752 struct snd_ctl_elem_value *ucontrol)
2754 struct soc_mixer_control *mc =
2755 (struct soc_mixer_control *)kcontrol->private_value;
2756 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2757 unsigned int reg = mc->reg;
2758 unsigned int reg2 = mc->rreg;
2759 unsigned int shift = mc->shift;
2760 unsigned int rshift = mc->rshift;
2763 int sign_bit = mc->sign_bit;
2764 unsigned int mask = (1 << fls(max)) - 1;
2765 unsigned int invert = mc->invert;
2768 mask = BIT(sign_bit + 1) - 1;
2770 ucontrol->value.integer.value[0] = snd_soc_read_signed(codec, reg, mask,
2771 shift, sign_bit) - min;
2773 ucontrol->value.integer.value[0] =
2774 max - ucontrol->value.integer.value[0];
2776 if (snd_soc_volsw_is_stereo(mc)) {
2778 ucontrol->value.integer.value[1] =
2779 snd_soc_read_signed(codec, reg, mask, rshift,
2782 ucontrol->value.integer.value[1] =
2783 snd_soc_read_signed(codec, reg2, mask, shift,
2786 ucontrol->value.integer.value[1] =
2787 max - ucontrol->value.integer.value[1];
2792 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2795 * snd_soc_put_volsw - single mixer put callback
2796 * @kcontrol: mixer control
2797 * @ucontrol: control element information
2799 * Callback to set the value of a single mixer control, or a double mixer
2800 * control that spans 2 registers.
2802 * Returns 0 for success.
2804 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2805 struct snd_ctl_elem_value *ucontrol)
2807 struct soc_mixer_control *mc =
2808 (struct soc_mixer_control *)kcontrol->private_value;
2809 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2810 unsigned int reg = mc->reg;
2811 unsigned int reg2 = mc->rreg;
2812 unsigned int shift = mc->shift;
2813 unsigned int rshift = mc->rshift;
2816 unsigned int sign_bit = mc->sign_bit;
2817 unsigned int mask = (1 << fls(max)) - 1;
2818 unsigned int invert = mc->invert;
2820 bool type_2r = false;
2821 unsigned int val2 = 0;
2822 unsigned int val, val_mask;
2825 mask = BIT(sign_bit + 1) - 1;
2827 val = ((ucontrol->value.integer.value[0] + min) & mask);
2830 val_mask = mask << shift;
2832 if (snd_soc_volsw_is_stereo(mc)) {
2833 val2 = ((ucontrol->value.integer.value[1] + min) & mask);
2837 val_mask |= mask << rshift;
2838 val |= val2 << rshift;
2840 val2 = val2 << shift;
2844 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2849 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2853 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2856 * snd_soc_get_volsw_sx - single mixer get callback
2857 * @kcontrol: mixer control
2858 * @ucontrol: control element information
2860 * Callback to get the value of a single mixer control, or a double mixer
2861 * control that spans 2 registers.
2863 * Returns 0 for success.
2865 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
2866 struct snd_ctl_elem_value *ucontrol)
2868 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2869 struct soc_mixer_control *mc =
2870 (struct soc_mixer_control *)kcontrol->private_value;
2872 unsigned int reg = mc->reg;
2873 unsigned int reg2 = mc->rreg;
2874 unsigned int shift = mc->shift;
2875 unsigned int rshift = mc->rshift;
2878 int mask = (1 << (fls(min + max) - 1)) - 1;
2880 ucontrol->value.integer.value[0] =
2881 ((snd_soc_read(codec, reg) >> shift) - min) & mask;
2883 if (snd_soc_volsw_is_stereo(mc))
2884 ucontrol->value.integer.value[1] =
2885 ((snd_soc_read(codec, reg2) >> rshift) - min) & mask;
2889 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
2892 * snd_soc_put_volsw_sx - double mixer set callback
2893 * @kcontrol: mixer control
2894 * @uinfo: control element information
2896 * Callback to set the value of a double mixer control that spans 2 registers.
2898 * Returns 0 for success.
2900 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
2901 struct snd_ctl_elem_value *ucontrol)
2903 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2904 struct soc_mixer_control *mc =
2905 (struct soc_mixer_control *)kcontrol->private_value;
2907 unsigned int reg = mc->reg;
2908 unsigned int reg2 = mc->rreg;
2909 unsigned int shift = mc->shift;
2910 unsigned int rshift = mc->rshift;
2913 int mask = (1 << (fls(min + max) - 1)) - 1;
2915 unsigned short val, val_mask, val2 = 0;
2917 val_mask = mask << shift;
2918 val = (ucontrol->value.integer.value[0] + min) & mask;
2921 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2925 if (snd_soc_volsw_is_stereo(mc)) {
2926 val_mask = mask << rshift;
2927 val2 = (ucontrol->value.integer.value[1] + min) & mask;
2928 val2 = val2 << rshift;
2930 if (snd_soc_update_bits_locked(codec, reg2, val_mask, val2))
2935 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
2938 * snd_soc_info_volsw_s8 - signed mixer info callback
2939 * @kcontrol: mixer control
2940 * @uinfo: control element information
2942 * Callback to provide information about a signed mixer control.
2944 * Returns 0 for success.
2946 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2947 struct snd_ctl_elem_info *uinfo)
2949 struct soc_mixer_control *mc =
2950 (struct soc_mixer_control *)kcontrol->private_value;
2954 if (!mc->platform_max)
2955 mc->platform_max = mc->max;
2956 platform_max = mc->platform_max;
2958 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2960 uinfo->value.integer.min = 0;
2961 uinfo->value.integer.max = platform_max - min;
2964 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2967 * snd_soc_get_volsw_s8 - signed mixer get callback
2968 * @kcontrol: mixer control
2969 * @ucontrol: control element information
2971 * Callback to get the value of a signed mixer control.
2973 * Returns 0 for success.
2975 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2976 struct snd_ctl_elem_value *ucontrol)
2978 struct soc_mixer_control *mc =
2979 (struct soc_mixer_control *)kcontrol->private_value;
2980 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2981 unsigned int reg = mc->reg;
2983 int val = snd_soc_read(codec, reg);
2985 ucontrol->value.integer.value[0] =
2986 ((signed char)(val & 0xff))-min;
2987 ucontrol->value.integer.value[1] =
2988 ((signed char)((val >> 8) & 0xff))-min;
2991 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2994 * snd_soc_put_volsw_sgn - signed mixer put callback
2995 * @kcontrol: mixer control
2996 * @ucontrol: control element information
2998 * Callback to set the value of a signed mixer control.
3000 * Returns 0 for success.
3002 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
3003 struct snd_ctl_elem_value *ucontrol)
3005 struct soc_mixer_control *mc =
3006 (struct soc_mixer_control *)kcontrol->private_value;
3007 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3008 unsigned int reg = mc->reg;
3012 val = (ucontrol->value.integer.value[0]+min) & 0xff;
3013 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
3015 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
3017 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
3020 * snd_soc_info_volsw_range - single mixer info callback with range.
3021 * @kcontrol: mixer control
3022 * @uinfo: control element information
3024 * Callback to provide information, within a range, about a single
3027 * returns 0 for success.
3029 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
3030 struct snd_ctl_elem_info *uinfo)
3032 struct soc_mixer_control *mc =
3033 (struct soc_mixer_control *)kcontrol->private_value;
3037 if (!mc->platform_max)
3038 mc->platform_max = mc->max;
3039 platform_max = mc->platform_max;
3041 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3042 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
3043 uinfo->value.integer.min = 0;
3044 uinfo->value.integer.max = platform_max - min;
3048 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
3051 * snd_soc_put_volsw_range - single mixer put value callback with range.
3052 * @kcontrol: mixer control
3053 * @ucontrol: control element information
3055 * Callback to set the value, within a range, for a single mixer control.
3057 * Returns 0 for success.
3059 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
3060 struct snd_ctl_elem_value *ucontrol)
3062 struct soc_mixer_control *mc =
3063 (struct soc_mixer_control *)kcontrol->private_value;
3064 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3065 unsigned int reg = mc->reg;
3066 unsigned int rreg = mc->rreg;
3067 unsigned int shift = mc->shift;
3070 unsigned int mask = (1 << fls(max)) - 1;
3071 unsigned int invert = mc->invert;
3072 unsigned int val, val_mask;
3075 val = ((ucontrol->value.integer.value[0] + min) & mask);
3078 val_mask = mask << shift;
3081 ret = snd_soc_update_bits_locked(codec, reg, val_mask, val);
3085 if (snd_soc_volsw_is_stereo(mc)) {
3086 val = ((ucontrol->value.integer.value[1] + min) & mask);
3089 val_mask = mask << shift;
3092 ret = snd_soc_update_bits_locked(codec, rreg, val_mask, val);
3097 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
3100 * snd_soc_get_volsw_range - single mixer get callback with range
3101 * @kcontrol: mixer control
3102 * @ucontrol: control element information
3104 * Callback to get the value, within a range, of a single mixer control.
3106 * Returns 0 for success.
3108 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
3109 struct snd_ctl_elem_value *ucontrol)
3111 struct soc_mixer_control *mc =
3112 (struct soc_mixer_control *)kcontrol->private_value;
3113 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3114 unsigned int reg = mc->reg;
3115 unsigned int rreg = mc->rreg;
3116 unsigned int shift = mc->shift;
3119 unsigned int mask = (1 << fls(max)) - 1;
3120 unsigned int invert = mc->invert;
3122 ucontrol->value.integer.value[0] =
3123 (snd_soc_read(codec, reg) >> shift) & mask;
3125 ucontrol->value.integer.value[0] =
3126 max - ucontrol->value.integer.value[0];
3127 ucontrol->value.integer.value[0] =
3128 ucontrol->value.integer.value[0] - min;
3130 if (snd_soc_volsw_is_stereo(mc)) {
3131 ucontrol->value.integer.value[1] =
3132 (snd_soc_read(codec, rreg) >> shift) & mask;
3134 ucontrol->value.integer.value[1] =
3135 max - ucontrol->value.integer.value[1];
3136 ucontrol->value.integer.value[1] =
3137 ucontrol->value.integer.value[1] - min;
3142 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
3145 * snd_soc_limit_volume - Set new limit to an existing volume control.
3147 * @codec: where to look for the control
3148 * @name: Name of the control
3149 * @max: new maximum limit
3151 * Return 0 for success, else error.
3153 int snd_soc_limit_volume(struct snd_soc_codec *codec,
3154 const char *name, int max)
3156 struct snd_card *card = codec->card->snd_card;
3157 struct snd_kcontrol *kctl;
3158 struct soc_mixer_control *mc;
3162 /* Sanity check for name and max */
3163 if (unlikely(!name || max <= 0))
3166 list_for_each_entry(kctl, &card->controls, list) {
3167 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
3173 mc = (struct soc_mixer_control *)kctl->private_value;
3174 if (max <= mc->max) {
3175 mc->platform_max = max;
3181 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
3183 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
3184 struct snd_ctl_elem_info *uinfo)
3186 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3187 struct soc_bytes *params = (void *)kcontrol->private_value;
3189 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
3190 uinfo->count = params->num_regs * codec->val_bytes;
3194 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
3196 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
3197 struct snd_ctl_elem_value *ucontrol)
3199 struct soc_bytes *params = (void *)kcontrol->private_value;
3200 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3203 if (codec->using_regmap)
3204 ret = regmap_raw_read(codec->control_data, params->base,
3205 ucontrol->value.bytes.data,
3206 params->num_regs * codec->val_bytes);
3210 /* Hide any masked bytes to ensure consistent data reporting */
3211 if (ret == 0 && params->mask) {
3212 switch (codec->val_bytes) {
3214 ucontrol->value.bytes.data[0] &= ~params->mask;
3217 ((u16 *)(&ucontrol->value.bytes.data))[0]
3218 &= cpu_to_be16(~params->mask);
3221 ((u32 *)(&ucontrol->value.bytes.data))[0]
3222 &= cpu_to_be32(~params->mask);
3231 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
3233 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
3234 struct snd_ctl_elem_value *ucontrol)
3236 struct soc_bytes *params = (void *)kcontrol->private_value;
3237 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3239 unsigned int val, mask;
3242 if (!codec->using_regmap)
3245 len = params->num_regs * codec->val_bytes;
3247 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
3252 * If we've got a mask then we need to preserve the register
3253 * bits. We shouldn't modify the incoming data so take a
3257 ret = regmap_read(codec->control_data, params->base, &val);
3261 val &= params->mask;
3263 switch (codec->val_bytes) {
3265 ((u8 *)data)[0] &= ~params->mask;
3266 ((u8 *)data)[0] |= val;
3269 mask = ~params->mask;
3270 ret = regmap_parse_val(codec->control_data,
3275 ((u16 *)data)[0] &= mask;
3277 ret = regmap_parse_val(codec->control_data,
3282 ((u16 *)data)[0] |= val;
3285 mask = ~params->mask;
3286 ret = regmap_parse_val(codec->control_data,
3291 ((u32 *)data)[0] &= mask;
3293 ret = regmap_parse_val(codec->control_data,
3298 ((u32 *)data)[0] |= val;
3306 ret = regmap_raw_write(codec->control_data, params->base,
3314 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
3317 * snd_soc_info_xr_sx - signed multi register info callback
3318 * @kcontrol: mreg control
3319 * @uinfo: control element information
3321 * Callback to provide information of a control that can
3322 * span multiple codec registers which together
3323 * forms a single signed value in a MSB/LSB manner.
3325 * Returns 0 for success.
3327 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
3328 struct snd_ctl_elem_info *uinfo)
3330 struct soc_mreg_control *mc =
3331 (struct soc_mreg_control *)kcontrol->private_value;
3332 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3334 uinfo->value.integer.min = mc->min;
3335 uinfo->value.integer.max = mc->max;
3339 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
3342 * snd_soc_get_xr_sx - signed multi register get callback
3343 * @kcontrol: mreg control
3344 * @ucontrol: control element information
3346 * Callback to get the value of a control that can span
3347 * multiple codec registers which together forms a single
3348 * signed value in a MSB/LSB manner. The control supports
3349 * specifying total no of bits used to allow for bitfields
3350 * across the multiple codec registers.
3352 * Returns 0 for success.
3354 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
3355 struct snd_ctl_elem_value *ucontrol)
3357 struct soc_mreg_control *mc =
3358 (struct soc_mreg_control *)kcontrol->private_value;
3359 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3360 unsigned int regbase = mc->regbase;
3361 unsigned int regcount = mc->regcount;
3362 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3363 unsigned int regwmask = (1<<regwshift)-1;
3364 unsigned int invert = mc->invert;
3365 unsigned long mask = (1UL<<mc->nbits)-1;
3369 unsigned long regval;
3372 for (i = 0; i < regcount; i++) {
3373 regval = snd_soc_read(codec, regbase+i) & regwmask;
3374 val |= regval << (regwshift*(regcount-i-1));
3377 if (min < 0 && val > max)
3381 ucontrol->value.integer.value[0] = val;
3385 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
3388 * snd_soc_put_xr_sx - signed multi register get callback
3389 * @kcontrol: mreg control
3390 * @ucontrol: control element information
3392 * Callback to set the value of a control that can span
3393 * multiple codec registers which together forms a single
3394 * signed value in a MSB/LSB manner. The control supports
3395 * specifying total no of bits used to allow for bitfields
3396 * across the multiple codec registers.
3398 * Returns 0 for success.
3400 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
3401 struct snd_ctl_elem_value *ucontrol)
3403 struct soc_mreg_control *mc =
3404 (struct soc_mreg_control *)kcontrol->private_value;
3405 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3406 unsigned int regbase = mc->regbase;
3407 unsigned int regcount = mc->regcount;
3408 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3409 unsigned int regwmask = (1<<regwshift)-1;
3410 unsigned int invert = mc->invert;
3411 unsigned long mask = (1UL<<mc->nbits)-1;
3413 long val = ucontrol->value.integer.value[0];
3414 unsigned int i, regval, regmask;
3420 for (i = 0; i < regcount; i++) {
3421 regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
3422 regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
3423 err = snd_soc_update_bits_locked(codec, regbase+i,
3431 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
3434 * snd_soc_get_strobe - strobe get callback
3435 * @kcontrol: mixer control
3436 * @ucontrol: control element information
3438 * Callback get the value of a strobe mixer control.
3440 * Returns 0 for success.
3442 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
3443 struct snd_ctl_elem_value *ucontrol)
3445 struct soc_mixer_control *mc =
3446 (struct soc_mixer_control *)kcontrol->private_value;
3447 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3448 unsigned int reg = mc->reg;
3449 unsigned int shift = mc->shift;
3450 unsigned int mask = 1 << shift;
3451 unsigned int invert = mc->invert != 0;
3452 unsigned int val = snd_soc_read(codec, reg) & mask;
3454 if (shift != 0 && val != 0)
3456 ucontrol->value.enumerated.item[0] = val ^ invert;
3460 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
3463 * snd_soc_put_strobe - strobe put callback
3464 * @kcontrol: mixer control
3465 * @ucontrol: control element information
3467 * Callback strobe a register bit to high then low (or the inverse)
3468 * in one pass of a single mixer enum control.
3470 * Returns 1 for success.
3472 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
3473 struct snd_ctl_elem_value *ucontrol)
3475 struct soc_mixer_control *mc =
3476 (struct soc_mixer_control *)kcontrol->private_value;
3477 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3478 unsigned int reg = mc->reg;
3479 unsigned int shift = mc->shift;
3480 unsigned int mask = 1 << shift;
3481 unsigned int invert = mc->invert != 0;
3482 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
3483 unsigned int val1 = (strobe ^ invert) ? mask : 0;
3484 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
3487 err = snd_soc_update_bits_locked(codec, reg, mask, val1);
3491 err = snd_soc_update_bits_locked(codec, reg, mask, val2);
3494 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);
3497 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3499 * @clk_id: DAI specific clock ID
3500 * @freq: new clock frequency in Hz
3501 * @dir: new clock direction - input/output.
3503 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3505 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
3506 unsigned int freq, int dir)
3508 if (dai->driver && dai->driver->ops->set_sysclk)
3509 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
3510 else if (dai->codec && dai->codec->driver->set_sysclk)
3511 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
3516 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
3519 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3521 * @clk_id: DAI specific clock ID
3522 * @source: Source for the clock
3523 * @freq: new clock frequency in Hz
3524 * @dir: new clock direction - input/output.
3526 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3528 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
3529 int source, unsigned int freq, int dir)
3531 if (codec->driver->set_sysclk)
3532 return codec->driver->set_sysclk(codec, clk_id, source,
3537 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
3540 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3542 * @div_id: DAI specific clock divider ID
3543 * @div: new clock divisor.
3545 * Configures the clock dividers. This is used to derive the best DAI bit and
3546 * frame clocks from the system or master clock. It's best to set the DAI bit
3547 * and frame clocks as low as possible to save system power.
3549 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
3550 int div_id, int div)
3552 if (dai->driver && dai->driver->ops->set_clkdiv)
3553 return dai->driver->ops->set_clkdiv(dai, div_id, div);
3557 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
3560 * snd_soc_dai_set_pll - configure DAI PLL.
3562 * @pll_id: DAI specific PLL ID
3563 * @source: DAI specific source for the PLL
3564 * @freq_in: PLL input clock frequency in Hz
3565 * @freq_out: requested PLL output clock frequency in Hz
3567 * Configures and enables PLL to generate output clock based on input clock.
3569 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
3570 unsigned int freq_in, unsigned int freq_out)
3572 if (dai->driver && dai->driver->ops->set_pll)
3573 return dai->driver->ops->set_pll(dai, pll_id, source,
3575 else if (dai->codec && dai->codec->driver->set_pll)
3576 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
3581 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
3584 * snd_soc_codec_set_pll - configure codec PLL.
3586 * @pll_id: DAI specific PLL ID
3587 * @source: DAI specific source for the PLL
3588 * @freq_in: PLL input clock frequency in Hz
3589 * @freq_out: requested PLL output clock frequency in Hz
3591 * Configures and enables PLL to generate output clock based on input clock.
3593 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
3594 unsigned int freq_in, unsigned int freq_out)
3596 if (codec->driver->set_pll)
3597 return codec->driver->set_pll(codec, pll_id, source,
3602 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
3605 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
3607 * @ratio Ratio of BCLK to Sample rate.
3609 * Configures the DAI for a preset BCLK to sample rate ratio.
3611 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
3613 if (dai->driver && dai->driver->ops->set_bclk_ratio)
3614 return dai->driver->ops->set_bclk_ratio(dai, ratio);
3618 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);
3621 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3623 * @fmt: SND_SOC_DAIFMT_ format value.
3625 * Configures the DAI hardware format and clocking.
3627 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
3629 if (dai->driver == NULL)
3631 if (dai->driver->ops->set_fmt == NULL)
3633 return dai->driver->ops->set_fmt(dai, fmt);
3635 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
3638 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
3639 * @slots: Number of slots in use.
3640 * @tx_mask: bitmask representing active TX slots.
3641 * @rx_mask: bitmask representing active RX slots.
3643 * Generates the TDM tx and rx slot default masks for DAI.
3645 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
3646 unsigned int *tx_mask,
3647 unsigned int *rx_mask)
3649 if (*tx_mask || *rx_mask)
3655 *tx_mask = (1 << slots) - 1;
3656 *rx_mask = (1 << slots) - 1;
3662 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3664 * @tx_mask: bitmask representing active TX slots.
3665 * @rx_mask: bitmask representing active RX slots.
3666 * @slots: Number of slots in use.
3667 * @slot_width: Width in bits for each slot.
3669 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3672 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
3673 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3675 if (dai->driver && dai->driver->ops->xlate_tdm_slot_mask)
3676 dai->driver->ops->xlate_tdm_slot_mask(slots,
3677 &tx_mask, &rx_mask);
3679 snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
3681 if (dai->driver && dai->driver->ops->set_tdm_slot)
3682 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3687 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3690 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3692 * @tx_num: how many TX channels
3693 * @tx_slot: pointer to an array which imply the TX slot number channel
3695 * @rx_num: how many RX channels
3696 * @rx_slot: pointer to an array which imply the RX slot number channel
3699 * configure the relationship between channel number and TDM slot number.
3701 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3702 unsigned int tx_num, unsigned int *tx_slot,
3703 unsigned int rx_num, unsigned int *rx_slot)
3705 if (dai->driver && dai->driver->ops->set_channel_map)
3706 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3711 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3714 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3716 * @tristate: tristate enable
3718 * Tristates the DAI so that others can use it.
3720 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3722 if (dai->driver && dai->driver->ops->set_tristate)
3723 return dai->driver->ops->set_tristate(dai, tristate);
3727 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3730 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3732 * @mute: mute enable
3733 * @direction: stream to mute
3735 * Mutes the DAI DAC.
3737 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
3743 if (dai->driver->ops->mute_stream)
3744 return dai->driver->ops->mute_stream(dai, mute, direction);
3745 else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
3746 dai->driver->ops->digital_mute)
3747 return dai->driver->ops->digital_mute(dai, mute);
3751 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3754 * snd_soc_register_card - Register a card with the ASoC core
3756 * @card: Card to register
3759 int snd_soc_register_card(struct snd_soc_card *card)
3763 if (!card->name || !card->dev)
3766 for (i = 0; i < card->num_links; i++) {
3767 struct snd_soc_dai_link *link = &card->dai_link[i];
3770 * Codec must be specified by 1 of name or OF node,
3771 * not both or neither.
3773 if (!!link->codec_name == !!link->codec_of_node) {
3775 "ASoC: Neither/both codec name/of_node are set for %s\n",
3779 /* Codec DAI name must be specified */
3780 if (!link->codec_dai_name) {
3782 "ASoC: codec_dai_name not set for %s\n",
3788 * Platform may be specified by either name or OF node, but
3789 * can be left unspecified, and a dummy platform will be used.
3791 if (link->platform_name && link->platform_of_node) {
3793 "ASoC: Both platform name/of_node are set for %s\n",
3799 * CPU device may be specified by either name or OF node, but
3800 * can be left unspecified, and will be matched based on DAI
3803 if (link->cpu_name && link->cpu_of_node) {
3805 "ASoC: Neither/both cpu name/of_node are set for %s\n",
3810 * At least one of CPU DAI name or CPU device name/node must be
3813 if (!link->cpu_dai_name &&
3814 !(link->cpu_name || link->cpu_of_node)) {
3816 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
3822 dev_set_drvdata(card->dev, card);
3824 snd_soc_initialize_card_lists(card);
3826 soc_init_card_debugfs(card);
3828 card->rtd = devm_kzalloc(card->dev,
3829 sizeof(struct snd_soc_pcm_runtime) *
3830 (card->num_links + card->num_aux_devs),
3832 if (card->rtd == NULL)
3835 card->rtd_aux = &card->rtd[card->num_links];
3837 for (i = 0; i < card->num_links; i++)
3838 card->rtd[i].dai_link = &card->dai_link[i];
3840 INIT_LIST_HEAD(&card->list);
3841 INIT_LIST_HEAD(&card->dapm_dirty);
3842 card->instantiated = 0;
3843 mutex_init(&card->mutex);
3844 mutex_init(&card->dapm_mutex);
3846 ret = snd_soc_instantiate_card(card);
3848 soc_cleanup_card_debugfs(card);
3850 /* deactivate pins to sleep state */
3851 for (i = 0; i < card->num_rtd; i++) {
3852 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
3853 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
3854 if (!codec_dai->active)
3855 pinctrl_pm_select_sleep_state(codec_dai->dev);
3856 if (!cpu_dai->active)
3857 pinctrl_pm_select_sleep_state(cpu_dai->dev);
3862 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3865 * snd_soc_unregister_card - Unregister a card with the ASoC core
3867 * @card: Card to unregister
3870 int snd_soc_unregister_card(struct snd_soc_card *card)
3872 if (card->instantiated)
3873 soc_cleanup_card_resources(card);
3874 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
3878 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3881 * Simplify DAI link configuration by removing ".-1" from device names
3882 * and sanitizing names.
3884 static char *fmt_single_name(struct device *dev, int *id)
3886 char *found, name[NAME_SIZE];
3889 if (dev_name(dev) == NULL)
3892 strlcpy(name, dev_name(dev), NAME_SIZE);
3894 /* are we a "%s.%d" name (platform and SPI components) */
3895 found = strstr(name, dev->driver->name);
3898 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3900 /* discard ID from name if ID == -1 */
3902 found[strlen(dev->driver->name)] = '\0';
3906 /* I2C component devices are named "bus-addr" */
3907 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3908 char tmp[NAME_SIZE];
3910 /* create unique ID number from I2C addr and bus */
3911 *id = ((id1 & 0xffff) << 16) + id2;
3913 /* sanitize component name for DAI link creation */
3914 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3915 strlcpy(name, tmp, NAME_SIZE);
3920 return kstrdup(name, GFP_KERNEL);
3924 * Simplify DAI link naming for single devices with multiple DAIs by removing
3925 * any ".-1" and using the DAI name (instead of device name).
3927 static inline char *fmt_multiple_name(struct device *dev,
3928 struct snd_soc_dai_driver *dai_drv)
3930 if (dai_drv->name == NULL) {
3932 "ASoC: error - multiple DAI %s registered with no name\n",
3937 return kstrdup(dai_drv->name, GFP_KERNEL);
3941 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
3943 * @component: The component for which the DAIs should be unregistered
3945 static void snd_soc_unregister_dais(struct snd_soc_component *component)
3947 struct snd_soc_dai *dai, *_dai;
3949 list_for_each_entry_safe(dai, _dai, &component->dai_list, list) {
3950 dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
3952 list_del(&dai->list);
3959 * snd_soc_register_dais - Register a DAI with the ASoC core
3961 * @component: The component the DAIs are registered for
3962 * @codec: The CODEC that the DAIs are registered for, NULL if the component is
3964 * @dai_drv: DAI driver to use for the DAIs
3965 * @count: Number of DAIs
3966 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
3969 static int snd_soc_register_dais(struct snd_soc_component *component,
3970 struct snd_soc_codec *codec, struct snd_soc_dai_driver *dai_drv,
3971 size_t count, bool legacy_dai_naming)
3973 struct device *dev = component->dev;
3974 struct snd_soc_dai *dai;
3978 dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
3980 for (i = 0; i < count; i++) {
3982 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3989 * Back in the old days when we still had component-less DAIs,
3990 * instead of having a static name, component-less DAIs would
3991 * inherit the name of the parent device so it is possible to
3992 * register multiple instances of the DAI. We still need to keep
3993 * the same naming style even though those DAIs are not
3994 * component-less anymore.
3996 if (count == 1 && legacy_dai_naming) {
3997 dai->name = fmt_single_name(dev, &dai->id);
3999 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
4001 dai->id = dai_drv[i].id;
4005 if (dai->name == NULL) {
4011 dai->component = component;
4014 dai->driver = &dai_drv[i];
4015 dai->dapm.dev = dev;
4016 if (!dai->driver->ops)
4017 dai->driver->ops = &null_dai_ops;
4020 dai->dapm.idle_bias_off = 1;
4022 list_add(&dai->list, &component->dai_list);
4024 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
4030 snd_soc_unregister_dais(component);
4036 * snd_soc_register_component - Register a component with the ASoC core
4040 __snd_soc_register_component(struct device *dev,
4041 struct snd_soc_component *cmpnt,
4042 const struct snd_soc_component_driver *cmpnt_drv,
4043 struct snd_soc_codec *codec,
4044 struct snd_soc_dai_driver *dai_drv,
4045 int num_dai, bool allow_single_dai)
4049 dev_dbg(dev, "component register %s\n", dev_name(dev));
4052 dev_err(dev, "ASoC: Failed to connecting component\n");
4056 cmpnt->name = fmt_single_name(dev, &cmpnt->id);
4058 dev_err(dev, "ASoC: Failed to simplifying name\n");
4063 cmpnt->driver = cmpnt_drv;
4064 cmpnt->dai_drv = dai_drv;
4065 cmpnt->num_dai = num_dai;
4066 INIT_LIST_HEAD(&cmpnt->dai_list);
4068 ret = snd_soc_register_dais(cmpnt, codec, dai_drv, num_dai,
4071 dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret);
4072 goto error_component_name;
4075 mutex_lock(&client_mutex);
4076 list_add(&cmpnt->list, &component_list);
4077 mutex_unlock(&client_mutex);
4079 dev_dbg(cmpnt->dev, "ASoC: Registered component '%s'\n", cmpnt->name);
4083 error_component_name:
4089 int snd_soc_register_component(struct device *dev,
4090 const struct snd_soc_component_driver *cmpnt_drv,
4091 struct snd_soc_dai_driver *dai_drv,
4094 struct snd_soc_component *cmpnt;
4096 cmpnt = devm_kzalloc(dev, sizeof(*cmpnt), GFP_KERNEL);
4098 dev_err(dev, "ASoC: Failed to allocate memory\n");
4102 cmpnt->ignore_pmdown_time = true;
4104 return __snd_soc_register_component(dev, cmpnt, cmpnt_drv, NULL,
4105 dai_drv, num_dai, true);
4107 EXPORT_SYMBOL_GPL(snd_soc_register_component);
4110 * snd_soc_unregister_component - Unregister a component from the ASoC core
4113 void snd_soc_unregister_component(struct device *dev)
4115 struct snd_soc_component *cmpnt;
4117 list_for_each_entry(cmpnt, &component_list, list) {
4118 if (dev == cmpnt->dev)
4124 snd_soc_unregister_dais(cmpnt);
4126 mutex_lock(&client_mutex);
4127 list_del(&cmpnt->list);
4128 mutex_unlock(&client_mutex);
4130 dev_dbg(dev, "ASoC: Unregistered component '%s'\n", cmpnt->name);
4133 EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
4136 * snd_soc_add_platform - Add a platform to the ASoC core
4137 * @dev: The parent device for the platform
4138 * @platform: The platform to add
4139 * @platform_driver: The driver for the platform
4141 int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
4142 const struct snd_soc_platform_driver *platform_drv)
4144 /* create platform component name */
4145 platform->name = fmt_single_name(dev, &platform->id);
4146 if (platform->name == NULL)
4149 platform->dev = dev;
4150 platform->driver = platform_drv;
4151 platform->dapm.dev = dev;
4152 platform->dapm.platform = platform;
4153 platform->dapm.stream_event = platform_drv->stream_event;
4154 mutex_init(&platform->mutex);
4156 mutex_lock(&client_mutex);
4157 list_add(&platform->list, &platform_list);
4158 mutex_unlock(&client_mutex);
4160 dev_dbg(dev, "ASoC: Registered platform '%s'\n", platform->name);
4164 EXPORT_SYMBOL_GPL(snd_soc_add_platform);
4167 * snd_soc_register_platform - Register a platform with the ASoC core
4169 * @platform: platform to register
4171 int snd_soc_register_platform(struct device *dev,
4172 const struct snd_soc_platform_driver *platform_drv)
4174 struct snd_soc_platform *platform;
4177 dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
4179 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
4180 if (platform == NULL)
4183 ret = snd_soc_add_platform(dev, platform, platform_drv);
4189 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
4192 * snd_soc_remove_platform - Remove a platform from the ASoC core
4193 * @platform: the platform to remove
4195 void snd_soc_remove_platform(struct snd_soc_platform *platform)
4197 mutex_lock(&client_mutex);
4198 list_del(&platform->list);
4199 mutex_unlock(&client_mutex);
4201 dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
4203 kfree(platform->name);
4205 EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
4207 struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
4209 struct snd_soc_platform *platform;
4211 list_for_each_entry(platform, &platform_list, list) {
4212 if (dev == platform->dev)
4218 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
4221 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
4223 * @platform: platform to unregister
4225 void snd_soc_unregister_platform(struct device *dev)
4227 struct snd_soc_platform *platform;
4229 platform = snd_soc_lookup_platform(dev);
4233 snd_soc_remove_platform(platform);
4236 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
4238 static u64 codec_format_map[] = {
4239 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
4240 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
4241 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
4242 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
4243 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
4244 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
4245 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4246 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4247 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
4248 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
4249 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
4250 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
4251 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
4252 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
4253 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
4254 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
4257 /* Fix up the DAI formats for endianness: codecs don't actually see
4258 * the endianness of the data but we're using the CPU format
4259 * definitions which do need to include endianness so we ensure that
4260 * codec DAIs always have both big and little endian variants set.
4262 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
4266 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
4267 if (stream->formats & codec_format_map[i])
4268 stream->formats |= codec_format_map[i];
4272 * snd_soc_register_codec - Register a codec with the ASoC core
4274 * @codec: codec to register
4276 int snd_soc_register_codec(struct device *dev,
4277 const struct snd_soc_codec_driver *codec_drv,
4278 struct snd_soc_dai_driver *dai_drv,
4281 struct snd_soc_codec *codec;
4284 dev_dbg(dev, "codec register %s\n", dev_name(dev));
4286 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
4290 /* create CODEC component name */
4291 codec->name = fmt_single_name(dev, &codec->id);
4292 if (codec->name == NULL) {
4297 codec->write = codec_drv->write;
4298 codec->read = codec_drv->read;
4299 codec->volatile_register = codec_drv->volatile_register;
4300 codec->readable_register = codec_drv->readable_register;
4301 codec->writable_register = codec_drv->writable_register;
4302 codec->component.ignore_pmdown_time = codec_drv->ignore_pmdown_time;
4303 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
4304 codec->dapm.dev = dev;
4305 codec->dapm.codec = codec;
4306 codec->dapm.seq_notifier = codec_drv->seq_notifier;
4307 codec->dapm.stream_event = codec_drv->stream_event;
4309 codec->driver = codec_drv;
4310 codec->num_dai = num_dai;
4311 mutex_init(&codec->mutex);
4313 for (i = 0; i < num_dai; i++) {
4314 fixup_codec_formats(&dai_drv[i].playback);
4315 fixup_codec_formats(&dai_drv[i].capture);
4318 mutex_lock(&client_mutex);
4319 list_add(&codec->list, &codec_list);
4320 mutex_unlock(&client_mutex);
4322 /* register component */
4323 ret = __snd_soc_register_component(dev, &codec->component,
4324 &codec_drv->component_driver,
4325 codec, dai_drv, num_dai, false);
4327 dev_err(codec->dev, "ASoC: Failed to regster component: %d\n", ret);
4328 goto fail_codec_name;
4331 dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n", codec->name);
4335 mutex_lock(&client_mutex);
4336 list_del(&codec->list);
4337 mutex_unlock(&client_mutex);
4344 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
4347 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4349 * @codec: codec to unregister
4351 void snd_soc_unregister_codec(struct device *dev)
4353 struct snd_soc_codec *codec;
4355 list_for_each_entry(codec, &codec_list, list) {
4356 if (dev == codec->dev)
4362 snd_soc_unregister_component(dev);
4364 mutex_lock(&client_mutex);
4365 list_del(&codec->list);
4366 mutex_unlock(&client_mutex);
4368 dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n", codec->name);
4370 snd_soc_cache_exit(codec);
4374 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
4376 /* Retrieve a card's name from device tree */
4377 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
4378 const char *propname)
4380 struct device_node *np = card->dev->of_node;
4383 ret = of_property_read_string_index(np, propname, 0, &card->name);
4385 * EINVAL means the property does not exist. This is fine providing
4386 * card->name was previously set, which is checked later in
4387 * snd_soc_register_card.
4389 if (ret < 0 && ret != -EINVAL) {
4391 "ASoC: Property '%s' could not be read: %d\n",
4398 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
4400 static const struct snd_soc_dapm_widget simple_widgets[] = {
4401 SND_SOC_DAPM_MIC("Microphone", NULL),
4402 SND_SOC_DAPM_LINE("Line", NULL),
4403 SND_SOC_DAPM_HP("Headphone", NULL),
4404 SND_SOC_DAPM_SPK("Speaker", NULL),
4407 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
4408 const char *propname)
4410 struct device_node *np = card->dev->of_node;
4411 struct snd_soc_dapm_widget *widgets;
4412 const char *template, *wname;
4413 int i, j, num_widgets, ret;
4415 num_widgets = of_property_count_strings(np, propname);
4416 if (num_widgets < 0) {
4418 "ASoC: Property '%s' does not exist\n", propname);
4421 if (num_widgets & 1) {
4423 "ASoC: Property '%s' length is not even\n", propname);
4429 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4434 widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets),
4438 "ASoC: Could not allocate memory for widgets\n");
4442 for (i = 0; i < num_widgets; i++) {
4443 ret = of_property_read_string_index(np, propname,
4447 "ASoC: Property '%s' index %d read error:%d\n",
4448 propname, 2 * i, ret);
4452 for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) {
4453 if (!strncmp(template, simple_widgets[j].name,
4454 strlen(simple_widgets[j].name))) {
4455 widgets[i] = simple_widgets[j];
4460 if (j >= ARRAY_SIZE(simple_widgets)) {
4462 "ASoC: DAPM widget '%s' is not supported\n",
4467 ret = of_property_read_string_index(np, propname,
4472 "ASoC: Property '%s' index %d read error:%d\n",
4473 propname, (2 * i) + 1, ret);
4477 widgets[i].name = wname;
4480 card->dapm_widgets = widgets;
4481 card->num_dapm_widgets = num_widgets;
4485 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets);
4487 int snd_soc_of_parse_tdm_slot(struct device_node *np,
4488 unsigned int *slots,
4489 unsigned int *slot_width)
4494 if (of_property_read_bool(np, "dai-tdm-slot-num")) {
4495 ret = of_property_read_u32(np, "dai-tdm-slot-num", &val);
4503 if (of_property_read_bool(np, "dai-tdm-slot-width")) {
4504 ret = of_property_read_u32(np, "dai-tdm-slot-width", &val);
4514 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot);
4516 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
4517 const char *propname)
4519 struct device_node *np = card->dev->of_node;
4521 struct snd_soc_dapm_route *routes;
4524 num_routes = of_property_count_strings(np, propname);
4525 if (num_routes < 0 || num_routes & 1) {
4527 "ASoC: Property '%s' does not exist or its length is not even\n",
4533 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4538 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
4542 "ASoC: Could not allocate DAPM route table\n");
4546 for (i = 0; i < num_routes; i++) {
4547 ret = of_property_read_string_index(np, propname,
4548 2 * i, &routes[i].sink);
4551 "ASoC: Property '%s' index %d could not be read: %d\n",
4552 propname, 2 * i, ret);
4555 ret = of_property_read_string_index(np, propname,
4556 (2 * i) + 1, &routes[i].source);
4559 "ASoC: Property '%s' index %d could not be read: %d\n",
4560 propname, (2 * i) + 1, ret);
4565 card->num_dapm_routes = num_routes;
4566 card->dapm_routes = routes;
4570 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
4572 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
4577 unsigned int format = 0;
4583 } of_fmt_table[] = {
4584 { "i2s", SND_SOC_DAIFMT_I2S },
4585 { "right_j", SND_SOC_DAIFMT_RIGHT_J },
4586 { "left_j", SND_SOC_DAIFMT_LEFT_J },
4587 { "dsp_a", SND_SOC_DAIFMT_DSP_A },
4588 { "dsp_b", SND_SOC_DAIFMT_DSP_B },
4589 { "ac97", SND_SOC_DAIFMT_AC97 },
4590 { "pdm", SND_SOC_DAIFMT_PDM},
4591 { "msb", SND_SOC_DAIFMT_MSB },
4592 { "lsb", SND_SOC_DAIFMT_LSB },
4599 * check "[prefix]format = xxx"
4600 * SND_SOC_DAIFMT_FORMAT_MASK area
4602 snprintf(prop, sizeof(prop), "%sformat", prefix);
4603 ret = of_property_read_string(np, prop, &str);
4605 for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
4606 if (strcmp(str, of_fmt_table[i].name) == 0) {
4607 format |= of_fmt_table[i].val;
4614 * check "[prefix]continuous-clock"
4615 * SND_SOC_DAIFMT_CLOCK_MASK area
4617 snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
4618 if (of_get_property(np, prop, NULL))
4619 format |= SND_SOC_DAIFMT_CONT;
4621 format |= SND_SOC_DAIFMT_GATED;
4624 * check "[prefix]bitclock-inversion"
4625 * check "[prefix]frame-inversion"
4626 * SND_SOC_DAIFMT_INV_MASK area
4628 snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
4629 bit = !!of_get_property(np, prop, NULL);
4631 snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
4632 frame = !!of_get_property(np, prop, NULL);
4634 switch ((bit << 4) + frame) {
4636 format |= SND_SOC_DAIFMT_IB_IF;
4639 format |= SND_SOC_DAIFMT_IB_NF;
4642 format |= SND_SOC_DAIFMT_NB_IF;
4645 /* SND_SOC_DAIFMT_NB_NF is default */
4650 * check "[prefix]bitclock-master"
4651 * check "[prefix]frame-master"
4652 * SND_SOC_DAIFMT_MASTER_MASK area
4654 snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
4655 bit = !!of_get_property(np, prop, NULL);
4657 snprintf(prop, sizeof(prop), "%sframe-master", prefix);
4658 frame = !!of_get_property(np, prop, NULL);
4660 switch ((bit << 4) + frame) {
4662 format |= SND_SOC_DAIFMT_CBM_CFM;
4665 format |= SND_SOC_DAIFMT_CBM_CFS;
4668 format |= SND_SOC_DAIFMT_CBS_CFM;
4671 format |= SND_SOC_DAIFMT_CBS_CFS;
4677 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
4679 int snd_soc_of_get_dai_name(struct device_node *of_node,
4680 const char **dai_name)
4682 struct snd_soc_component *pos;
4683 struct of_phandle_args args;
4686 ret = of_parse_phandle_with_args(of_node, "sound-dai",
4687 "#sound-dai-cells", 0, &args);
4691 ret = -EPROBE_DEFER;
4693 mutex_lock(&client_mutex);
4694 list_for_each_entry(pos, &component_list, list) {
4695 if (pos->dev->of_node != args.np)
4698 if (pos->driver->of_xlate_dai_name) {
4699 ret = pos->driver->of_xlate_dai_name(pos, &args, dai_name);
4703 switch (args.args_count) {
4705 id = 0; /* same as dai_drv[0] */
4715 if (id < 0 || id >= pos->num_dai) {
4722 *dai_name = pos->dai_drv[id].name;
4724 *dai_name = pos->name;
4729 mutex_unlock(&client_mutex);
4731 of_node_put(args.np);
4735 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
4737 static int __init snd_soc_init(void)
4739 #ifdef CONFIG_DEBUG_FS
4740 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
4741 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
4742 pr_warn("ASoC: Failed to create debugfs directory\n");
4743 snd_soc_debugfs_root = NULL;
4746 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
4748 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4750 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
4752 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4754 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
4755 &platform_list_fops))
4756 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4759 snd_soc_util_init();
4761 return platform_driver_register(&soc_driver);
4763 module_init(snd_soc_init);
4765 static void __exit snd_soc_exit(void)
4767 snd_soc_util_exit();
4769 #ifdef CONFIG_DEBUG_FS
4770 debugfs_remove_recursive(snd_soc_debugfs_root);
4772 platform_driver_unregister(&soc_driver);
4774 module_exit(snd_soc_exit);
4776 /* Module information */
4777 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4778 MODULE_DESCRIPTION("ALSA SoC Core");
4779 MODULE_LICENSE("GPL");
4780 MODULE_ALIAS("platform:soc-audio");