2 * soc-core.c -- ALSA SoC Audio Layer
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 * o Add hw rules to enforce rates, etc.
20 * o More testing with other codecs/machines.
21 * o Add more codecs and platforms to ensure good API coverage.
22 * o Support TDM on PCM and I2S
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
30 #include <linux/bitops.h>
31 #include <linux/debugfs.h>
32 #include <linux/platform_device.h>
33 #include <linux/pinctrl/consumer.h>
34 #include <linux/ctype.h>
35 #include <linux/slab.h>
37 #include <linux/gpio.h>
38 #include <linux/of_gpio.h>
39 #include <sound/ac97_codec.h>
40 #include <sound/core.h>
41 #include <sound/jack.h>
42 #include <sound/pcm.h>
43 #include <sound/pcm_params.h>
44 #include <sound/soc.h>
45 #include <sound/soc-dpcm.h>
46 #include <sound/initval.h>
48 #define CREATE_TRACE_POINTS
49 #include <trace/events/asoc.h>
53 #ifdef CONFIG_DEBUG_FS
54 struct dentry *snd_soc_debugfs_root;
55 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
58 static DEFINE_MUTEX(client_mutex);
59 static LIST_HEAD(platform_list);
60 static LIST_HEAD(codec_list);
61 static LIST_HEAD(component_list);
64 * This is a timeout to do a DAPM powerdown after a stream is closed().
65 * It can be used to eliminate pops between different playback streams, e.g.
66 * between two audio tracks.
68 static int pmdown_time = 5000;
69 module_param(pmdown_time, int, 0);
70 MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
72 struct snd_ac97_reset_cfg {
74 struct pinctrl_state *pstate_reset;
75 struct pinctrl_state *pstate_warm_reset;
76 struct pinctrl_state *pstate_run;
82 /* returns the minimum number of bytes needed to represent
83 * a particular given value */
84 static int min_bytes_needed(unsigned long val)
89 for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
92 c = (sizeof val * 8) - c;
100 /* fill buf which is 'len' bytes with a formatted
101 * string of the form 'reg: value\n' */
102 static int format_register_str(struct snd_soc_codec *codec,
103 unsigned int reg, char *buf, size_t len)
105 int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
106 int regsize = codec->driver->reg_word_size * 2;
108 char tmpbuf[len + 1];
109 char regbuf[regsize + 1];
111 /* since tmpbuf is allocated on the stack, warn the callers if they
112 * try to abuse this function */
115 /* +2 for ': ' and + 1 for '\n' */
116 if (wordsize + regsize + 2 + 1 != len)
119 ret = snd_soc_read(codec, reg);
121 memset(regbuf, 'X', regsize);
122 regbuf[regsize] = '\0';
124 snprintf(regbuf, regsize + 1, "%.*x", regsize, ret);
127 /* prepare the buffer */
128 snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf);
129 /* copy it back to the caller without the '\0' */
130 memcpy(buf, tmpbuf, len);
135 /* codec register dump */
136 static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
137 size_t count, loff_t pos)
140 int wordsize, regsize;
145 wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
146 regsize = codec->driver->reg_word_size * 2;
148 len = wordsize + regsize + 2 + 1;
150 if (!codec->driver->reg_cache_size)
153 if (codec->driver->reg_cache_step)
154 step = codec->driver->reg_cache_step;
156 for (i = 0; i < codec->driver->reg_cache_size; i += step) {
157 if (!snd_soc_codec_readable_register(codec, i))
159 if (codec->driver->display_register) {
160 count += codec->driver->display_register(codec, buf + count,
161 PAGE_SIZE - count, i);
163 /* only support larger than PAGE_SIZE bytes debugfs
164 * entries for the default case */
166 if (total + len >= count - 1)
168 format_register_str(codec, i, buf + total, len);
175 total = min(total, count - 1);
180 static ssize_t codec_reg_show(struct device *dev,
181 struct device_attribute *attr, char *buf)
183 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
185 return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
188 static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
190 static ssize_t pmdown_time_show(struct device *dev,
191 struct device_attribute *attr, char *buf)
193 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
195 return sprintf(buf, "%ld\n", rtd->pmdown_time);
198 static ssize_t pmdown_time_set(struct device *dev,
199 struct device_attribute *attr,
200 const char *buf, size_t count)
202 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
205 ret = kstrtol(buf, 10, &rtd->pmdown_time);
212 static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
214 #ifdef CONFIG_DEBUG_FS
215 static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
216 size_t count, loff_t *ppos)
219 struct snd_soc_codec *codec = file->private_data;
222 if (*ppos < 0 || !count)
225 buf = kmalloc(count, GFP_KERNEL);
229 ret = soc_codec_reg_show(codec, buf, count, *ppos);
231 if (copy_to_user(user_buf, buf, ret)) {
242 static ssize_t codec_reg_write_file(struct file *file,
243 const char __user *user_buf, size_t count, loff_t *ppos)
248 unsigned long reg, value;
249 struct snd_soc_codec *codec = file->private_data;
252 buf_size = min(count, (sizeof(buf)-1));
253 if (copy_from_user(buf, user_buf, buf_size))
257 while (*start == ' ')
259 reg = simple_strtoul(start, &start, 16);
260 while (*start == ' ')
262 ret = kstrtoul(start, 16, &value);
266 /* Userspace has been fiddling around behind the kernel's back */
267 add_taint(TAINT_USER, LOCKDEP_NOW_UNRELIABLE);
269 snd_soc_write(codec, reg, value);
273 static const struct file_operations codec_reg_fops = {
275 .read = codec_reg_read_file,
276 .write = codec_reg_write_file,
277 .llseek = default_llseek,
280 static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
282 struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
284 codec->debugfs_codec_root = debugfs_create_dir(codec->name,
286 if (!codec->debugfs_codec_root) {
288 "ASoC: Failed to create codec debugfs directory\n");
292 debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
294 debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
297 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
298 codec->debugfs_codec_root,
299 codec, &codec_reg_fops);
300 if (!codec->debugfs_reg)
302 "ASoC: Failed to create codec register debugfs file\n");
304 snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root);
307 static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
309 debugfs_remove_recursive(codec->debugfs_codec_root);
312 static void soc_init_platform_debugfs(struct snd_soc_platform *platform)
314 struct dentry *debugfs_card_root = platform->card->debugfs_card_root;
316 platform->debugfs_platform_root = debugfs_create_dir(platform->name,
318 if (!platform->debugfs_platform_root) {
319 dev_warn(platform->dev,
320 "ASoC: Failed to create platform debugfs directory\n");
324 snd_soc_dapm_debugfs_init(&platform->dapm,
325 platform->debugfs_platform_root);
328 static void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
330 debugfs_remove_recursive(platform->debugfs_platform_root);
333 static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
334 size_t count, loff_t *ppos)
336 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
337 ssize_t len, ret = 0;
338 struct snd_soc_codec *codec;
343 list_for_each_entry(codec, &codec_list, list) {
344 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
348 if (ret > PAGE_SIZE) {
355 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
362 static const struct file_operations codec_list_fops = {
363 .read = codec_list_read_file,
364 .llseek = default_llseek,/* read accesses f_pos */
367 static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
368 size_t count, loff_t *ppos)
370 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
371 ssize_t len, ret = 0;
372 struct snd_soc_component *component;
373 struct snd_soc_dai *dai;
378 list_for_each_entry(component, &component_list, list) {
379 list_for_each_entry(dai, &component->dai_list, list) {
380 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
384 if (ret > PAGE_SIZE) {
391 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
398 static const struct file_operations dai_list_fops = {
399 .read = dai_list_read_file,
400 .llseek = default_llseek,/* read accesses f_pos */
403 static ssize_t platform_list_read_file(struct file *file,
404 char __user *user_buf,
405 size_t count, loff_t *ppos)
407 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
408 ssize_t len, ret = 0;
409 struct snd_soc_platform *platform;
414 list_for_each_entry(platform, &platform_list, list) {
415 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
419 if (ret > PAGE_SIZE) {
425 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
432 static const struct file_operations platform_list_fops = {
433 .read = platform_list_read_file,
434 .llseek = default_llseek,/* read accesses f_pos */
437 static void soc_init_card_debugfs(struct snd_soc_card *card)
439 card->debugfs_card_root = debugfs_create_dir(card->name,
440 snd_soc_debugfs_root);
441 if (!card->debugfs_card_root) {
443 "ASoC: Failed to create card debugfs directory\n");
447 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
448 card->debugfs_card_root,
450 if (!card->debugfs_pop_time)
452 "ASoC: Failed to create pop time debugfs file\n");
455 static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
457 debugfs_remove_recursive(card->debugfs_card_root);
462 static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
466 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
470 static inline void soc_init_platform_debugfs(struct snd_soc_platform *platform)
474 static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
478 static inline void soc_init_card_debugfs(struct snd_soc_card *card)
482 static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
487 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
488 const char *dai_link, int stream)
492 for (i = 0; i < card->num_links; i++) {
493 if (card->rtd[i].dai_link->no_pcm &&
494 !strcmp(card->rtd[i].dai_link->name, dai_link))
495 return card->rtd[i].pcm->streams[stream].substream;
497 dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link);
500 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);
502 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
503 const char *dai_link)
507 for (i = 0; i < card->num_links; i++) {
508 if (!strcmp(card->rtd[i].dai_link->name, dai_link))
509 return &card->rtd[i];
511 dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link);
514 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
516 #ifdef CONFIG_SND_SOC_AC97_BUS
517 /* unregister ac97 codec */
518 static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
520 if (codec->ac97->dev.bus)
521 device_unregister(&codec->ac97->dev);
525 /* stop no dev release warning */
526 static void soc_ac97_device_release(struct device *dev){}
528 /* register ac97 codec to bus */
529 static int soc_ac97_dev_register(struct snd_soc_codec *codec)
533 codec->ac97->dev.bus = &ac97_bus_type;
534 codec->ac97->dev.parent = codec->card->dev;
535 codec->ac97->dev.release = soc_ac97_device_release;
537 dev_set_name(&codec->ac97->dev, "%d-%d:%s",
538 codec->card->snd_card->number, 0, codec->name);
539 err = device_register(&codec->ac97->dev);
541 dev_err(codec->dev, "ASoC: Can't register ac97 bus\n");
542 codec->ac97->dev.bus = NULL;
549 static void codec2codec_close_delayed_work(struct work_struct *work)
551 /* Currently nothing to do for c2c links
552 * Since c2c links are internal nodes in the DAPM graph and
553 * don't interface with the outside world or application layer
554 * we don't have to do any special handling on close.
558 #ifdef CONFIG_PM_SLEEP
559 /* powers down audio subsystem for suspend */
560 int snd_soc_suspend(struct device *dev)
562 struct snd_soc_card *card = dev_get_drvdata(dev);
563 struct snd_soc_codec *codec;
566 /* If the initialization of this soc device failed, there is no codec
567 * associated with it. Just bail out in this case.
569 if (list_empty(&card->codec_dev_list))
572 /* Due to the resume being scheduled into a workqueue we could
573 * suspend before that's finished - wait for it to complete.
575 snd_power_lock(card->snd_card);
576 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
577 snd_power_unlock(card->snd_card);
579 /* we're going to block userspace touching us until resume completes */
580 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
582 /* mute any active DACs */
583 for (i = 0; i < card->num_rtd; i++) {
584 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
585 struct snd_soc_dai_driver *drv = dai->driver;
587 if (card->rtd[i].dai_link->ignore_suspend)
590 if (drv->ops->digital_mute && dai->playback_active)
591 drv->ops->digital_mute(dai, 1);
594 /* suspend all pcms */
595 for (i = 0; i < card->num_rtd; i++) {
596 if (card->rtd[i].dai_link->ignore_suspend)
599 snd_pcm_suspend_all(card->rtd[i].pcm);
602 if (card->suspend_pre)
603 card->suspend_pre(card);
605 for (i = 0; i < card->num_rtd; i++) {
606 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
607 struct snd_soc_platform *platform = card->rtd[i].platform;
609 if (card->rtd[i].dai_link->ignore_suspend)
612 if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
613 cpu_dai->driver->suspend(cpu_dai);
614 if (platform->driver->suspend && !platform->suspended) {
615 platform->driver->suspend(cpu_dai);
616 platform->suspended = 1;
620 /* close any waiting streams and save state */
621 for (i = 0; i < card->num_rtd; i++) {
622 flush_delayed_work(&card->rtd[i].delayed_work);
623 card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
626 for (i = 0; i < card->num_rtd; i++) {
628 if (card->rtd[i].dai_link->ignore_suspend)
631 snd_soc_dapm_stream_event(&card->rtd[i],
632 SNDRV_PCM_STREAM_PLAYBACK,
633 SND_SOC_DAPM_STREAM_SUSPEND);
635 snd_soc_dapm_stream_event(&card->rtd[i],
636 SNDRV_PCM_STREAM_CAPTURE,
637 SND_SOC_DAPM_STREAM_SUSPEND);
640 /* Recheck all analogue paths too */
641 dapm_mark_io_dirty(&card->dapm);
642 snd_soc_dapm_sync(&card->dapm);
644 /* suspend all CODECs */
645 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
646 /* If there are paths active then the CODEC will be held with
647 * bias _ON and should not be suspended. */
648 if (!codec->suspended && codec->driver->suspend) {
649 switch (codec->dapm.bias_level) {
650 case SND_SOC_BIAS_STANDBY:
652 * If the CODEC is capable of idle
653 * bias off then being in STANDBY
654 * means it's doing something,
655 * otherwise fall through.
657 if (codec->dapm.idle_bias_off) {
659 "ASoC: idle_bias_off CODEC on over suspend\n");
662 case SND_SOC_BIAS_OFF:
663 codec->driver->suspend(codec);
664 codec->suspended = 1;
665 codec->cache_sync = 1;
666 if (codec->using_regmap)
667 regcache_mark_dirty(codec->control_data);
668 /* deactivate pins to sleep state */
669 pinctrl_pm_select_sleep_state(codec->dev);
673 "ASoC: CODEC is on over suspend\n");
679 for (i = 0; i < card->num_rtd; i++) {
680 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
682 if (card->rtd[i].dai_link->ignore_suspend)
685 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
686 cpu_dai->driver->suspend(cpu_dai);
688 /* deactivate pins to sleep state */
689 pinctrl_pm_select_sleep_state(cpu_dai->dev);
692 if (card->suspend_post)
693 card->suspend_post(card);
697 EXPORT_SYMBOL_GPL(snd_soc_suspend);
699 /* deferred resume work, so resume can complete before we finished
700 * setting our codec back up, which can be very slow on I2C
702 static void soc_resume_deferred(struct work_struct *work)
704 struct snd_soc_card *card =
705 container_of(work, struct snd_soc_card, deferred_resume_work);
706 struct snd_soc_codec *codec;
709 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
710 * so userspace apps are blocked from touching us
713 dev_dbg(card->dev, "ASoC: starting resume work\n");
715 /* Bring us up into D2 so that DAPM starts enabling things */
716 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
718 if (card->resume_pre)
719 card->resume_pre(card);
721 /* resume AC97 DAIs */
722 for (i = 0; i < card->num_rtd; i++) {
723 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
725 if (card->rtd[i].dai_link->ignore_suspend)
728 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
729 cpu_dai->driver->resume(cpu_dai);
732 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
733 /* If the CODEC was idle over suspend then it will have been
734 * left with bias OFF or STANDBY and suspended so we must now
735 * resume. Otherwise the suspend was suppressed.
737 if (codec->driver->resume && codec->suspended) {
738 switch (codec->dapm.bias_level) {
739 case SND_SOC_BIAS_STANDBY:
740 case SND_SOC_BIAS_OFF:
741 codec->driver->resume(codec);
742 codec->suspended = 0;
746 "ASoC: CODEC was on over suspend\n");
752 for (i = 0; i < card->num_rtd; i++) {
754 if (card->rtd[i].dai_link->ignore_suspend)
757 snd_soc_dapm_stream_event(&card->rtd[i],
758 SNDRV_PCM_STREAM_PLAYBACK,
759 SND_SOC_DAPM_STREAM_RESUME);
761 snd_soc_dapm_stream_event(&card->rtd[i],
762 SNDRV_PCM_STREAM_CAPTURE,
763 SND_SOC_DAPM_STREAM_RESUME);
766 /* unmute any active DACs */
767 for (i = 0; i < card->num_rtd; i++) {
768 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
769 struct snd_soc_dai_driver *drv = dai->driver;
771 if (card->rtd[i].dai_link->ignore_suspend)
774 if (drv->ops->digital_mute && dai->playback_active)
775 drv->ops->digital_mute(dai, 0);
778 for (i = 0; i < card->num_rtd; i++) {
779 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
780 struct snd_soc_platform *platform = card->rtd[i].platform;
782 if (card->rtd[i].dai_link->ignore_suspend)
785 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
786 cpu_dai->driver->resume(cpu_dai);
787 if (platform->driver->resume && platform->suspended) {
788 platform->driver->resume(cpu_dai);
789 platform->suspended = 0;
793 if (card->resume_post)
794 card->resume_post(card);
796 dev_dbg(card->dev, "ASoC: resume work completed\n");
798 /* userspace can access us now we are back as we were before */
799 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
801 /* Recheck all analogue paths too */
802 dapm_mark_io_dirty(&card->dapm);
803 snd_soc_dapm_sync(&card->dapm);
806 /* powers up audio subsystem after a suspend */
807 int snd_soc_resume(struct device *dev)
809 struct snd_soc_card *card = dev_get_drvdata(dev);
810 int i, ac97_control = 0;
812 /* If the initialization of this soc device failed, there is no codec
813 * associated with it. Just bail out in this case.
815 if (list_empty(&card->codec_dev_list))
818 /* activate pins from sleep state */
819 for (i = 0; i < card->num_rtd; i++) {
820 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
821 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
823 pinctrl_pm_select_default_state(cpu_dai->dev);
824 if (codec_dai->active)
825 pinctrl_pm_select_default_state(codec_dai->dev);
828 /* AC97 devices might have other drivers hanging off them so
829 * need to resume immediately. Other drivers don't have that
830 * problem and may take a substantial amount of time to resume
831 * due to I/O costs and anti-pop so handle them out of line.
833 for (i = 0; i < card->num_rtd; i++) {
834 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
835 ac97_control |= cpu_dai->driver->ac97_control;
838 dev_dbg(dev, "ASoC: Resuming AC97 immediately\n");
839 soc_resume_deferred(&card->deferred_resume_work);
841 dev_dbg(dev, "ASoC: Scheduling resume work\n");
842 if (!schedule_work(&card->deferred_resume_work))
843 dev_err(dev, "ASoC: resume work item may be lost\n");
848 EXPORT_SYMBOL_GPL(snd_soc_resume);
850 #define snd_soc_suspend NULL
851 #define snd_soc_resume NULL
854 static const struct snd_soc_dai_ops null_dai_ops = {
857 static int soc_bind_dai_link(struct snd_soc_card *card, int num)
859 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
860 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
861 struct snd_soc_component *component;
862 struct snd_soc_codec *codec;
863 struct snd_soc_platform *platform;
864 struct snd_soc_dai *codec_dai, *cpu_dai;
865 const char *platform_name;
867 dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num);
869 /* Find CPU DAI from registered DAIs*/
870 list_for_each_entry(component, &component_list, list) {
871 if (dai_link->cpu_of_node &&
872 component->dev->of_node != dai_link->cpu_of_node)
874 if (dai_link->cpu_name &&
875 strcmp(dev_name(component->dev), dai_link->cpu_name))
877 list_for_each_entry(cpu_dai, &component->dai_list, list) {
878 if (dai_link->cpu_dai_name &&
879 strcmp(cpu_dai->name, dai_link->cpu_dai_name))
882 rtd->cpu_dai = cpu_dai;
887 dev_err(card->dev, "ASoC: CPU DAI %s not registered\n",
888 dai_link->cpu_dai_name);
889 return -EPROBE_DEFER;
892 /* Find CODEC from registered CODECs */
893 list_for_each_entry(codec, &codec_list, list) {
894 if (dai_link->codec_of_node) {
895 if (codec->dev->of_node != dai_link->codec_of_node)
898 if (strcmp(codec->name, dai_link->codec_name))
905 * CODEC found, so find CODEC DAI from registered DAIs from
908 list_for_each_entry(codec_dai, &codec->component.dai_list, list) {
909 if (!strcmp(codec_dai->name, dai_link->codec_dai_name)) {
910 rtd->codec_dai = codec_dai;
915 if (!rtd->codec_dai) {
916 dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
917 dai_link->codec_dai_name);
918 return -EPROBE_DEFER;
923 dev_err(card->dev, "ASoC: CODEC %s not registered\n",
924 dai_link->codec_name);
925 return -EPROBE_DEFER;
928 /* if there's no platform we match on the empty platform */
929 platform_name = dai_link->platform_name;
930 if (!platform_name && !dai_link->platform_of_node)
931 platform_name = "snd-soc-dummy";
933 /* find one from the set of registered platforms */
934 list_for_each_entry(platform, &platform_list, list) {
935 if (dai_link->platform_of_node) {
936 if (platform->dev->of_node !=
937 dai_link->platform_of_node)
940 if (strcmp(platform->name, platform_name))
944 rtd->platform = platform;
946 if (!rtd->platform) {
947 dev_err(card->dev, "ASoC: platform %s not registered\n",
948 dai_link->platform_name);
949 return -EPROBE_DEFER;
957 static int soc_remove_platform(struct snd_soc_platform *platform)
961 if (platform->driver->remove) {
962 ret = platform->driver->remove(platform);
964 dev_err(platform->dev, "ASoC: failed to remove %d\n",
968 /* Make sure all DAPM widgets are freed */
969 snd_soc_dapm_free(&platform->dapm);
971 soc_cleanup_platform_debugfs(platform);
972 platform->probed = 0;
973 list_del(&platform->card_list);
974 module_put(platform->dev->driver->owner);
979 static void soc_remove_codec(struct snd_soc_codec *codec)
983 if (codec->driver->remove) {
984 err = codec->driver->remove(codec);
986 dev_err(codec->dev, "ASoC: failed to remove %d\n", err);
989 /* Make sure all DAPM widgets are freed */
990 snd_soc_dapm_free(&codec->dapm);
992 soc_cleanup_codec_debugfs(codec);
994 list_del(&codec->card_list);
995 module_put(codec->dev->driver->owner);
998 static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order)
1000 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1001 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
1004 /* unregister the rtd device */
1005 if (rtd->dev_registered) {
1006 device_remove_file(rtd->dev, &dev_attr_pmdown_time);
1007 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1008 device_unregister(rtd->dev);
1009 rtd->dev_registered = 0;
1012 /* remove the CODEC DAI */
1013 if (codec_dai && codec_dai->probed &&
1014 codec_dai->driver->remove_order == order) {
1015 if (codec_dai->driver->remove) {
1016 err = codec_dai->driver->remove(codec_dai);
1018 dev_err(codec_dai->dev,
1019 "ASoC: failed to remove %s: %d\n",
1020 codec_dai->name, err);
1022 codec_dai->probed = 0;
1023 list_del(&codec_dai->card_list);
1026 /* remove the cpu_dai */
1027 if (cpu_dai && cpu_dai->probed &&
1028 cpu_dai->driver->remove_order == order) {
1029 if (cpu_dai->driver->remove) {
1030 err = cpu_dai->driver->remove(cpu_dai);
1032 dev_err(cpu_dai->dev,
1033 "ASoC: failed to remove %s: %d\n",
1034 cpu_dai->name, err);
1036 cpu_dai->probed = 0;
1037 list_del(&cpu_dai->card_list);
1039 if (!cpu_dai->codec) {
1040 snd_soc_dapm_free(&cpu_dai->dapm);
1041 module_put(cpu_dai->dev->driver->owner);
1046 static void soc_remove_link_components(struct snd_soc_card *card, int num,
1049 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1050 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1051 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1052 struct snd_soc_platform *platform = rtd->platform;
1053 struct snd_soc_codec *codec;
1055 /* remove the platform */
1056 if (platform && platform->probed &&
1057 platform->driver->remove_order == order) {
1058 soc_remove_platform(platform);
1061 /* remove the CODEC-side CODEC */
1063 codec = codec_dai->codec;
1064 if (codec && codec->probed &&
1065 codec->driver->remove_order == order)
1066 soc_remove_codec(codec);
1069 /* remove any CPU-side CODEC */
1071 codec = cpu_dai->codec;
1072 if (codec && codec->probed &&
1073 codec->driver->remove_order == order)
1074 soc_remove_codec(codec);
1078 static void soc_remove_dai_links(struct snd_soc_card *card)
1082 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1084 for (dai = 0; dai < card->num_rtd; dai++)
1085 soc_remove_link_dais(card, dai, order);
1088 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1090 for (dai = 0; dai < card->num_rtd; dai++)
1091 soc_remove_link_components(card, dai, order);
1097 static void soc_set_name_prefix(struct snd_soc_card *card,
1098 struct snd_soc_codec *codec)
1102 if (card->codec_conf == NULL)
1105 for (i = 0; i < card->num_configs; i++) {
1106 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1107 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
1108 codec->name_prefix = map->name_prefix;
1114 static int soc_probe_codec(struct snd_soc_card *card,
1115 struct snd_soc_codec *codec)
1118 const struct snd_soc_codec_driver *driver = codec->driver;
1119 struct snd_soc_dai *dai;
1122 codec->dapm.card = card;
1123 soc_set_name_prefix(card, codec);
1125 if (!try_module_get(codec->dev->driver->owner))
1128 soc_init_codec_debugfs(codec);
1130 if (driver->dapm_widgets)
1131 snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
1132 driver->num_dapm_widgets);
1134 /* Create DAPM widgets for each DAI stream */
1135 list_for_each_entry(dai, &codec->component.dai_list, list)
1136 snd_soc_dapm_new_dai_widgets(&codec->dapm, dai);
1138 codec->dapm.idle_bias_off = driver->idle_bias_off;
1140 if (!codec->write && dev_get_regmap(codec->dev, NULL)) {
1141 /* Set the default I/O up try regmap */
1142 ret = snd_soc_codec_set_cache_io(codec, NULL);
1145 "Failed to set cache I/O: %d\n", ret);
1150 if (driver->probe) {
1151 ret = driver->probe(codec);
1154 "ASoC: failed to probe CODEC %d\n", ret);
1157 WARN(codec->dapm.idle_bias_off &&
1158 codec->dapm.bias_level != SND_SOC_BIAS_OFF,
1159 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1163 if (driver->controls)
1164 snd_soc_add_codec_controls(codec, driver->controls,
1165 driver->num_controls);
1166 if (driver->dapm_routes)
1167 snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
1168 driver->num_dapm_routes);
1170 /* mark codec as probed and add to card codec list */
1172 list_add(&codec->card_list, &card->codec_dev_list);
1173 list_add(&codec->dapm.list, &card->dapm_list);
1178 soc_cleanup_codec_debugfs(codec);
1179 module_put(codec->dev->driver->owner);
1184 static int soc_probe_platform(struct snd_soc_card *card,
1185 struct snd_soc_platform *platform)
1188 const struct snd_soc_platform_driver *driver = platform->driver;
1189 struct snd_soc_component *component;
1190 struct snd_soc_dai *dai;
1192 platform->card = card;
1193 platform->dapm.card = card;
1195 if (!try_module_get(platform->dev->driver->owner))
1198 soc_init_platform_debugfs(platform);
1200 if (driver->dapm_widgets)
1201 snd_soc_dapm_new_controls(&platform->dapm,
1202 driver->dapm_widgets, driver->num_dapm_widgets);
1204 /* Create DAPM widgets for each DAI stream */
1205 list_for_each_entry(component, &component_list, list) {
1206 if (component->dev != platform->dev)
1208 list_for_each_entry(dai, &component->dai_list, list)
1209 snd_soc_dapm_new_dai_widgets(&platform->dapm, dai);
1212 platform->dapm.idle_bias_off = 1;
1214 if (driver->probe) {
1215 ret = driver->probe(platform);
1217 dev_err(platform->dev,
1218 "ASoC: failed to probe platform %d\n", ret);
1223 if (driver->controls)
1224 snd_soc_add_platform_controls(platform, driver->controls,
1225 driver->num_controls);
1226 if (driver->dapm_routes)
1227 snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
1228 driver->num_dapm_routes);
1230 /* mark platform as probed and add to card platform list */
1231 platform->probed = 1;
1232 list_add(&platform->card_list, &card->platform_dev_list);
1233 list_add(&platform->dapm.list, &card->dapm_list);
1238 soc_cleanup_platform_debugfs(platform);
1239 module_put(platform->dev->driver->owner);
1244 static void rtd_release(struct device *dev)
1249 static int soc_post_component_init(struct snd_soc_card *card,
1250 struct snd_soc_codec *codec,
1251 int num, int dailess)
1253 struct snd_soc_dai_link *dai_link = NULL;
1254 struct snd_soc_aux_dev *aux_dev = NULL;
1255 struct snd_soc_pcm_runtime *rtd;
1256 const char *temp, *name;
1260 dai_link = &card->dai_link[num];
1261 rtd = &card->rtd[num];
1262 name = dai_link->name;
1264 aux_dev = &card->aux_dev[num];
1265 rtd = &card->rtd_aux[num];
1266 name = aux_dev->name;
1270 /* machine controls, routes and widgets are not prefixed */
1271 temp = codec->name_prefix;
1272 codec->name_prefix = NULL;
1274 /* do machine specific initialization */
1275 if (!dailess && dai_link->init)
1276 ret = dai_link->init(rtd);
1277 else if (dailess && aux_dev->init)
1278 ret = aux_dev->init(&codec->dapm);
1280 dev_err(card->dev, "ASoC: failed to init %s: %d\n", name, ret);
1283 codec->name_prefix = temp;
1285 /* register the rtd device */
1288 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1291 device_initialize(rtd->dev);
1292 rtd->dev->parent = card->dev;
1293 rtd->dev->release = rtd_release;
1294 rtd->dev->init_name = name;
1295 dev_set_drvdata(rtd->dev, rtd);
1296 mutex_init(&rtd->pcm_mutex);
1297 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1298 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1299 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1300 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1301 ret = device_add(rtd->dev);
1303 /* calling put_device() here to free the rtd->dev */
1304 put_device(rtd->dev);
1306 "ASoC: failed to register runtime device: %d\n", ret);
1309 rtd->dev_registered = 1;
1311 /* add DAPM sysfs entries for this codec */
1312 ret = snd_soc_dapm_sys_add(rtd->dev);
1315 "ASoC: failed to add codec dapm sysfs entries: %d\n", ret);
1317 /* add codec sysfs entries */
1318 ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
1321 "ASoC: failed to add codec sysfs files: %d\n", ret);
1323 #ifdef CONFIG_DEBUG_FS
1324 /* add DPCM sysfs entries */
1325 if (!dailess && !dai_link->dynamic)
1328 ret = soc_dpcm_debugfs_add(rtd);
1330 dev_err(rtd->dev, "ASoC: failed to add dpcm sysfs entries: %d\n", ret);
1337 static int soc_probe_link_components(struct snd_soc_card *card, int num,
1340 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1341 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1342 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1343 struct snd_soc_platform *platform = rtd->platform;
1346 /* probe the CPU-side component, if it is a CODEC */
1347 if (cpu_dai->codec &&
1348 !cpu_dai->codec->probed &&
1349 cpu_dai->codec->driver->probe_order == order) {
1350 ret = soc_probe_codec(card, cpu_dai->codec);
1355 /* probe the CODEC-side component */
1356 if (!codec_dai->codec->probed &&
1357 codec_dai->codec->driver->probe_order == order) {
1358 ret = soc_probe_codec(card, codec_dai->codec);
1363 /* probe the platform */
1364 if (!platform->probed &&
1365 platform->driver->probe_order == order) {
1366 ret = soc_probe_platform(card, platform);
1374 static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
1376 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1377 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1378 struct snd_soc_codec *codec = rtd->codec;
1379 struct snd_soc_platform *platform = rtd->platform;
1380 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1381 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1382 struct snd_soc_dapm_widget *play_w, *capture_w;
1385 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1386 card->name, num, order);
1388 /* config components */
1389 cpu_dai->platform = platform;
1390 codec_dai->card = card;
1391 cpu_dai->card = card;
1393 /* set default power off timeout */
1394 rtd->pmdown_time = pmdown_time;
1396 /* probe the cpu_dai */
1397 if (!cpu_dai->probed &&
1398 cpu_dai->driver->probe_order == order) {
1399 if (!cpu_dai->codec) {
1400 cpu_dai->dapm.card = card;
1401 if (!try_module_get(cpu_dai->dev->driver->owner))
1404 list_add(&cpu_dai->dapm.list, &card->dapm_list);
1407 if (cpu_dai->driver->probe) {
1408 ret = cpu_dai->driver->probe(cpu_dai);
1410 dev_err(cpu_dai->dev,
1411 "ASoC: failed to probe CPU DAI %s: %d\n",
1412 cpu_dai->name, ret);
1413 module_put(cpu_dai->dev->driver->owner);
1417 cpu_dai->probed = 1;
1418 /* mark cpu_dai as probed and add to card dai list */
1419 list_add(&cpu_dai->card_list, &card->dai_dev_list);
1422 /* probe the CODEC DAI */
1423 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
1424 if (codec_dai->driver->probe) {
1425 ret = codec_dai->driver->probe(codec_dai);
1427 dev_err(codec_dai->dev,
1428 "ASoC: failed to probe CODEC DAI %s: %d\n",
1429 codec_dai->name, ret);
1434 /* mark codec_dai as probed and add to card dai list */
1435 codec_dai->probed = 1;
1436 list_add(&codec_dai->card_list, &card->dai_dev_list);
1439 /* complete DAI probe during last probe */
1440 if (order != SND_SOC_COMP_ORDER_LAST)
1443 ret = soc_post_component_init(card, codec, num, 0);
1447 ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
1449 dev_warn(rtd->dev, "ASoC: failed to add pmdown_time sysfs: %d\n",
1452 if (cpu_dai->driver->compress_dai) {
1453 /*create compress_device"*/
1454 ret = soc_new_compress(rtd, num);
1456 dev_err(card->dev, "ASoC: can't create compress %s\n",
1457 dai_link->stream_name);
1462 if (!dai_link->params) {
1463 /* create the pcm */
1464 ret = soc_new_pcm(rtd, num);
1466 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1467 dai_link->stream_name, ret);
1471 INIT_DELAYED_WORK(&rtd->delayed_work,
1472 codec2codec_close_delayed_work);
1474 /* link the DAI widgets */
1475 play_w = codec_dai->playback_widget;
1476 capture_w = cpu_dai->capture_widget;
1477 if (play_w && capture_w) {
1478 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1481 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1482 play_w->name, capture_w->name, ret);
1487 play_w = cpu_dai->playback_widget;
1488 capture_w = codec_dai->capture_widget;
1489 if (play_w && capture_w) {
1490 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1493 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1494 play_w->name, capture_w->name, ret);
1501 /* add platform data for AC97 devices */
1502 if (rtd->codec_dai->driver->ac97_control)
1503 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1508 #ifdef CONFIG_SND_SOC_AC97_BUS
1509 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1513 /* Only instantiate AC97 if not already done by the adaptor
1514 * for the generic AC97 subsystem.
1516 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
1518 * It is possible that the AC97 device is already registered to
1519 * the device subsystem. This happens when the device is created
1520 * via snd_ac97_mixer(). Currently only SoC codec that does so
1521 * is the generic AC97 glue but others migh emerge.
1523 * In those cases we don't try to register the device again.
1525 if (!rtd->codec->ac97_created)
1528 ret = soc_ac97_dev_register(rtd->codec);
1530 dev_err(rtd->codec->dev,
1531 "ASoC: AC97 device register failed: %d\n", ret);
1535 rtd->codec->ac97_registered = 1;
1540 static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1542 if (codec->ac97_registered) {
1543 soc_ac97_dev_unregister(codec);
1544 codec->ac97_registered = 0;
1549 static int soc_check_aux_dev(struct snd_soc_card *card, int num)
1551 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1552 struct snd_soc_codec *codec;
1554 /* find CODEC from registered CODECs*/
1555 list_for_each_entry(codec, &codec_list, list) {
1556 if (!strcmp(codec->name, aux_dev->codec_name))
1560 dev_err(card->dev, "ASoC: %s not registered\n", aux_dev->codec_name);
1562 return -EPROBE_DEFER;
1565 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1567 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1568 struct snd_soc_codec *codec;
1571 /* find CODEC from registered CODECs*/
1572 list_for_each_entry(codec, &codec_list, list) {
1573 if (!strcmp(codec->name, aux_dev->codec_name)) {
1574 if (codec->probed) {
1576 "ASoC: codec already probed");
1583 /* codec not found */
1584 dev_err(card->dev, "ASoC: codec %s not found", aux_dev->codec_name);
1585 return -EPROBE_DEFER;
1588 ret = soc_probe_codec(card, codec);
1592 ret = soc_post_component_init(card, codec, num, 1);
1598 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1600 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1601 struct snd_soc_codec *codec = rtd->codec;
1603 /* unregister the rtd device */
1604 if (rtd->dev_registered) {
1605 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1606 device_unregister(rtd->dev);
1607 rtd->dev_registered = 0;
1610 if (codec && codec->probed)
1611 soc_remove_codec(codec);
1614 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec)
1618 if (codec->cache_init)
1621 ret = snd_soc_cache_init(codec);
1624 "ASoC: Failed to set cache compression type: %d\n",
1628 codec->cache_init = 1;
1632 static int snd_soc_instantiate_card(struct snd_soc_card *card)
1634 struct snd_soc_codec *codec;
1635 struct snd_soc_dai_link *dai_link;
1636 int ret, i, order, dai_fmt;
1638 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1641 for (i = 0; i < card->num_links; i++) {
1642 ret = soc_bind_dai_link(card, i);
1647 /* check aux_devs too */
1648 for (i = 0; i < card->num_aux_devs; i++) {
1649 ret = soc_check_aux_dev(card, i);
1654 /* initialize the register cache for each available codec */
1655 list_for_each_entry(codec, &codec_list, list) {
1656 if (codec->cache_init)
1658 ret = snd_soc_init_codec_cache(codec);
1663 /* card bind complete so register a sound card */
1664 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1665 card->owner, 0, &card->snd_card);
1668 "ASoC: can't create sound card for card %s: %d\n",
1672 card->snd_card->dev = card->dev;
1674 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1675 card->dapm.dev = card->dev;
1676 card->dapm.card = card;
1677 list_add(&card->dapm.list, &card->dapm_list);
1679 #ifdef CONFIG_DEBUG_FS
1680 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1683 #ifdef CONFIG_PM_SLEEP
1684 /* deferred resume work */
1685 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1688 if (card->dapm_widgets)
1689 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1690 card->num_dapm_widgets);
1692 /* initialise the sound card only once */
1694 ret = card->probe(card);
1696 goto card_probe_error;
1699 /* probe all components used by DAI links on this card */
1700 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1702 for (i = 0; i < card->num_links; i++) {
1703 ret = soc_probe_link_components(card, i, order);
1706 "ASoC: failed to instantiate card %d\n",
1713 /* probe all DAI links on this card */
1714 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1716 for (i = 0; i < card->num_links; i++) {
1717 ret = soc_probe_link_dais(card, i, order);
1720 "ASoC: failed to instantiate card %d\n",
1727 for (i = 0; i < card->num_aux_devs; i++) {
1728 ret = soc_probe_aux_dev(card, i);
1731 "ASoC: failed to add auxiliary devices %d\n",
1733 goto probe_aux_dev_err;
1737 snd_soc_dapm_link_dai_widgets(card);
1738 snd_soc_dapm_connect_dai_link_widgets(card);
1741 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1743 if (card->dapm_routes)
1744 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1745 card->num_dapm_routes);
1747 for (i = 0; i < card->num_links; i++) {
1748 dai_link = &card->dai_link[i];
1749 dai_fmt = dai_link->dai_fmt;
1752 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1754 if (ret != 0 && ret != -ENOTSUPP)
1755 dev_warn(card->rtd[i].codec_dai->dev,
1756 "ASoC: Failed to set DAI format: %d\n",
1760 /* If this is a regular CPU link there will be a platform */
1762 (dai_link->platform_name || dai_link->platform_of_node)) {
1763 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1765 if (ret != 0 && ret != -ENOTSUPP)
1766 dev_warn(card->rtd[i].cpu_dai->dev,
1767 "ASoC: Failed to set DAI format: %d\n",
1769 } else if (dai_fmt) {
1770 /* Flip the polarity for the "CPU" end */
1771 dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
1772 switch (dai_link->dai_fmt &
1773 SND_SOC_DAIFMT_MASTER_MASK) {
1774 case SND_SOC_DAIFMT_CBM_CFM:
1775 dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1777 case SND_SOC_DAIFMT_CBM_CFS:
1778 dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1780 case SND_SOC_DAIFMT_CBS_CFM:
1781 dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1783 case SND_SOC_DAIFMT_CBS_CFS:
1784 dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1788 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1790 if (ret != 0 && ret != -ENOTSUPP)
1791 dev_warn(card->rtd[i].cpu_dai->dev,
1792 "ASoC: Failed to set DAI format: %d\n",
1797 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1799 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1800 "%s", card->long_name ? card->long_name : card->name);
1801 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1802 "%s", card->driver_name ? card->driver_name : card->name);
1803 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1804 switch (card->snd_card->driver[i]) {
1810 if (!isalnum(card->snd_card->driver[i]))
1811 card->snd_card->driver[i] = '_';
1816 if (card->late_probe) {
1817 ret = card->late_probe(card);
1819 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
1821 goto probe_aux_dev_err;
1825 if (card->fully_routed)
1826 list_for_each_entry(codec, &card->codec_dev_list, card_list)
1827 snd_soc_dapm_auto_nc_codec_pins(codec);
1829 snd_soc_dapm_new_widgets(card);
1831 ret = snd_card_register(card->snd_card);
1833 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
1835 goto probe_aux_dev_err;
1838 #ifdef CONFIG_SND_SOC_AC97_BUS
1839 /* register any AC97 codecs */
1840 for (i = 0; i < card->num_rtd; i++) {
1841 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1844 "ASoC: failed to register AC97: %d\n", ret);
1846 soc_unregister_ac97_dai_link(card->rtd[i].codec);
1847 goto probe_aux_dev_err;
1852 card->instantiated = 1;
1853 snd_soc_dapm_sync(&card->dapm);
1854 mutex_unlock(&card->mutex);
1859 for (i = 0; i < card->num_aux_devs; i++)
1860 soc_remove_aux_dev(card, i);
1863 soc_remove_dai_links(card);
1869 snd_card_free(card->snd_card);
1872 mutex_unlock(&card->mutex);
1877 /* probes a new socdev */
1878 static int soc_probe(struct platform_device *pdev)
1880 struct snd_soc_card *card = platform_get_drvdata(pdev);
1883 * no card, so machine driver should be registering card
1884 * we should not be here in that case so ret error
1889 dev_warn(&pdev->dev,
1890 "ASoC: machine %s should use snd_soc_register_card()\n",
1893 /* Bodge while we unpick instantiation */
1894 card->dev = &pdev->dev;
1896 return snd_soc_register_card(card);
1899 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1903 /* make sure any delayed work runs */
1904 for (i = 0; i < card->num_rtd; i++) {
1905 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1906 flush_delayed_work(&rtd->delayed_work);
1909 /* remove auxiliary devices */
1910 for (i = 0; i < card->num_aux_devs; i++)
1911 soc_remove_aux_dev(card, i);
1913 /* remove and free each DAI */
1914 soc_remove_dai_links(card);
1916 soc_cleanup_card_debugfs(card);
1918 /* remove the card */
1922 snd_soc_dapm_free(&card->dapm);
1924 snd_card_free(card->snd_card);
1929 /* removes a socdev */
1930 static int soc_remove(struct platform_device *pdev)
1932 struct snd_soc_card *card = platform_get_drvdata(pdev);
1934 snd_soc_unregister_card(card);
1938 int snd_soc_poweroff(struct device *dev)
1940 struct snd_soc_card *card = dev_get_drvdata(dev);
1943 if (!card->instantiated)
1946 /* Flush out pmdown_time work - we actually do want to run it
1947 * now, we're shutting down so no imminent restart. */
1948 for (i = 0; i < card->num_rtd; i++) {
1949 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1950 flush_delayed_work(&rtd->delayed_work);
1953 snd_soc_dapm_shutdown(card);
1955 /* deactivate pins to sleep state */
1956 for (i = 0; i < card->num_rtd; i++) {
1957 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1958 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
1959 pinctrl_pm_select_sleep_state(codec_dai->dev);
1960 pinctrl_pm_select_sleep_state(cpu_dai->dev);
1965 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
1967 const struct dev_pm_ops snd_soc_pm_ops = {
1968 .suspend = snd_soc_suspend,
1969 .resume = snd_soc_resume,
1970 .freeze = snd_soc_suspend,
1971 .thaw = snd_soc_resume,
1972 .poweroff = snd_soc_poweroff,
1973 .restore = snd_soc_resume,
1975 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
1977 /* ASoC platform driver */
1978 static struct platform_driver soc_driver = {
1980 .name = "soc-audio",
1981 .owner = THIS_MODULE,
1982 .pm = &snd_soc_pm_ops,
1985 .remove = soc_remove,
1989 * snd_soc_codec_volatile_register: Report if a register is volatile.
1991 * @codec: CODEC to query.
1992 * @reg: Register to query.
1994 * Boolean function indiciating if a CODEC register is volatile.
1996 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
1999 if (codec->volatile_register)
2000 return codec->volatile_register(codec, reg);
2004 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
2007 * snd_soc_codec_readable_register: Report if a register is readable.
2009 * @codec: CODEC to query.
2010 * @reg: Register to query.
2012 * Boolean function indicating if a CODEC register is readable.
2014 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
2017 if (codec->readable_register)
2018 return codec->readable_register(codec, reg);
2022 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
2025 * snd_soc_codec_writable_register: Report if a register is writable.
2027 * @codec: CODEC to query.
2028 * @reg: Register to query.
2030 * Boolean function indicating if a CODEC register is writable.
2032 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
2035 if (codec->writable_register)
2036 return codec->writable_register(codec, reg);
2040 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
2042 int snd_soc_platform_read(struct snd_soc_platform *platform,
2047 if (!platform->driver->read) {
2048 dev_err(platform->dev, "ASoC: platform has no read back\n");
2052 ret = platform->driver->read(platform, reg);
2053 dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
2054 trace_snd_soc_preg_read(platform, reg, ret);
2058 EXPORT_SYMBOL_GPL(snd_soc_platform_read);
2060 int snd_soc_platform_write(struct snd_soc_platform *platform,
2061 unsigned int reg, unsigned int val)
2063 if (!platform->driver->write) {
2064 dev_err(platform->dev, "ASoC: platform has no write back\n");
2068 dev_dbg(platform->dev, "write %x = %x\n", reg, val);
2069 trace_snd_soc_preg_write(platform, reg, val);
2070 return platform->driver->write(platform, reg, val);
2072 EXPORT_SYMBOL_GPL(snd_soc_platform_write);
2075 * snd_soc_new_ac97_codec - initailise AC97 device
2076 * @codec: audio codec
2077 * @ops: AC97 bus operations
2078 * @num: AC97 codec number
2080 * Initialises AC97 codec resources for use by ad-hoc devices only.
2082 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
2083 struct snd_ac97_bus_ops *ops, int num)
2085 mutex_lock(&codec->mutex);
2087 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2088 if (codec->ac97 == NULL) {
2089 mutex_unlock(&codec->mutex);
2093 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
2094 if (codec->ac97->bus == NULL) {
2097 mutex_unlock(&codec->mutex);
2101 codec->ac97->bus->ops = ops;
2102 codec->ac97->num = num;
2105 * Mark the AC97 device to be created by us. This way we ensure that the
2106 * device will be registered with the device subsystem later on.
2108 codec->ac97_created = 1;
2110 mutex_unlock(&codec->mutex);
2113 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
2115 static struct snd_ac97_reset_cfg snd_ac97_rst_cfg;
2117 static void snd_soc_ac97_warm_reset(struct snd_ac97 *ac97)
2119 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2121 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_warm_reset);
2123 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 1);
2127 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2129 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2133 static void snd_soc_ac97_reset(struct snd_ac97 *ac97)
2135 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2137 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_reset);
2139 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2140 gpio_direction_output(snd_ac97_rst_cfg.gpio_sdata, 0);
2141 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 0);
2145 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 1);
2147 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2151 static int snd_soc_ac97_parse_pinctl(struct device *dev,
2152 struct snd_ac97_reset_cfg *cfg)
2155 struct pinctrl_state *state;
2159 p = devm_pinctrl_get(dev);
2161 dev_err(dev, "Failed to get pinctrl\n");
2166 state = pinctrl_lookup_state(p, "ac97-reset");
2167 if (IS_ERR(state)) {
2168 dev_err(dev, "Can't find pinctrl state ac97-reset\n");
2169 return PTR_RET(state);
2171 cfg->pstate_reset = state;
2173 state = pinctrl_lookup_state(p, "ac97-warm-reset");
2174 if (IS_ERR(state)) {
2175 dev_err(dev, "Can't find pinctrl state ac97-warm-reset\n");
2176 return PTR_RET(state);
2178 cfg->pstate_warm_reset = state;
2180 state = pinctrl_lookup_state(p, "ac97-running");
2181 if (IS_ERR(state)) {
2182 dev_err(dev, "Can't find pinctrl state ac97-running\n");
2183 return PTR_RET(state);
2185 cfg->pstate_run = state;
2187 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 0);
2189 dev_err(dev, "Can't find ac97-sync gpio\n");
2192 ret = devm_gpio_request(dev, gpio, "AC97 link sync");
2194 dev_err(dev, "Failed requesting ac97-sync gpio\n");
2197 cfg->gpio_sync = gpio;
2199 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 1);
2201 dev_err(dev, "Can't find ac97-sdata gpio %d\n", gpio);
2204 ret = devm_gpio_request(dev, gpio, "AC97 link sdata");
2206 dev_err(dev, "Failed requesting ac97-sdata gpio\n");
2209 cfg->gpio_sdata = gpio;
2211 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 2);
2213 dev_err(dev, "Can't find ac97-reset gpio\n");
2216 ret = devm_gpio_request(dev, gpio, "AC97 link reset");
2218 dev_err(dev, "Failed requesting ac97-reset gpio\n");
2221 cfg->gpio_reset = gpio;
2226 struct snd_ac97_bus_ops *soc_ac97_ops;
2227 EXPORT_SYMBOL_GPL(soc_ac97_ops);
2229 int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops)
2231 if (ops == soc_ac97_ops)
2234 if (soc_ac97_ops && ops)
2241 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops);
2244 * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions
2246 * This function sets the reset and warm_reset properties of ops and parses
2247 * the device node of pdev to get pinctrl states and gpio numbers to use.
2249 int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops,
2250 struct platform_device *pdev)
2252 struct device *dev = &pdev->dev;
2253 struct snd_ac97_reset_cfg cfg;
2256 ret = snd_soc_ac97_parse_pinctl(dev, &cfg);
2260 ret = snd_soc_set_ac97_ops(ops);
2264 ops->warm_reset = snd_soc_ac97_warm_reset;
2265 ops->reset = snd_soc_ac97_reset;
2267 snd_ac97_rst_cfg = cfg;
2270 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset);
2273 * snd_soc_free_ac97_codec - free AC97 codec device
2274 * @codec: audio codec
2276 * Frees AC97 codec device resources.
2278 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
2280 mutex_lock(&codec->mutex);
2281 #ifdef CONFIG_SND_SOC_AC97_BUS
2282 soc_unregister_ac97_dai_link(codec);
2284 kfree(codec->ac97->bus);
2287 codec->ac97_created = 0;
2288 mutex_unlock(&codec->mutex);
2290 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
2292 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
2296 ret = codec->read(codec, reg);
2297 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
2298 trace_snd_soc_reg_read(codec, reg, ret);
2302 EXPORT_SYMBOL_GPL(snd_soc_read);
2304 unsigned int snd_soc_write(struct snd_soc_codec *codec,
2305 unsigned int reg, unsigned int val)
2307 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
2308 trace_snd_soc_reg_write(codec, reg, val);
2309 return codec->write(codec, reg, val);
2311 EXPORT_SYMBOL_GPL(snd_soc_write);
2314 * snd_soc_update_bits - update codec register bits
2315 * @codec: audio codec
2316 * @reg: codec register
2317 * @mask: register mask
2320 * Writes new register value.
2322 * Returns 1 for change, 0 for no change, or negative error code.
2324 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
2325 unsigned int mask, unsigned int value)
2328 unsigned int old, new;
2331 if (codec->using_regmap) {
2332 ret = regmap_update_bits_check(codec->control_data, reg,
2333 mask, value, &change);
2335 ret = snd_soc_read(codec, reg);
2340 new = (old & ~mask) | (value & mask);
2341 change = old != new;
2343 ret = snd_soc_write(codec, reg, new);
2351 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
2354 * snd_soc_update_bits_locked - update codec register bits
2355 * @codec: audio codec
2356 * @reg: codec register
2357 * @mask: register mask
2360 * Writes new register value, and takes the codec mutex.
2362 * Returns 1 for change else 0.
2364 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
2365 unsigned short reg, unsigned int mask,
2370 mutex_lock(&codec->mutex);
2371 change = snd_soc_update_bits(codec, reg, mask, value);
2372 mutex_unlock(&codec->mutex);
2376 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
2379 * snd_soc_test_bits - test register for change
2380 * @codec: audio codec
2381 * @reg: codec register
2382 * @mask: register mask
2385 * Tests a register with a new value and checks if the new value is
2386 * different from the old value.
2388 * Returns 1 for change else 0.
2390 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
2391 unsigned int mask, unsigned int value)
2394 unsigned int old, new;
2396 old = snd_soc_read(codec, reg);
2397 new = (old & ~mask) | value;
2398 change = old != new;
2402 EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2405 * snd_soc_cnew - create new control
2406 * @_template: control template
2407 * @data: control private data
2408 * @long_name: control long name
2409 * @prefix: control name prefix
2411 * Create a new mixer control from a template control.
2413 * Returns 0 for success, else error.
2415 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2416 void *data, const char *long_name,
2419 struct snd_kcontrol_new template;
2420 struct snd_kcontrol *kcontrol;
2423 memcpy(&template, _template, sizeof(template));
2427 long_name = template.name;
2430 name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
2434 template.name = name;
2436 template.name = long_name;
2439 kcontrol = snd_ctl_new1(&template, data);
2445 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2447 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2448 const struct snd_kcontrol_new *controls, int num_controls,
2449 const char *prefix, void *data)
2453 for (i = 0; i < num_controls; i++) {
2454 const struct snd_kcontrol_new *control = &controls[i];
2455 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2456 control->name, prefix));
2458 dev_err(dev, "ASoC: Failed to add %s: %d\n",
2459 control->name, err);
2467 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
2470 struct snd_card *card = soc_card->snd_card;
2471 struct snd_kcontrol *kctl;
2473 if (unlikely(!name))
2476 list_for_each_entry(kctl, &card->controls, list)
2477 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
2481 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
2484 * snd_soc_add_codec_controls - add an array of controls to a codec.
2485 * Convenience function to add a list of controls. Many codecs were
2486 * duplicating this code.
2488 * @codec: codec to add controls to
2489 * @controls: array of controls to add
2490 * @num_controls: number of elements in the array
2492 * Return 0 for success, else error.
2494 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2495 const struct snd_kcontrol_new *controls, int num_controls)
2497 struct snd_card *card = codec->card->snd_card;
2499 return snd_soc_add_controls(card, codec->dev, controls, num_controls,
2500 codec->name_prefix, codec);
2502 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2505 * snd_soc_add_platform_controls - add an array of controls to a platform.
2506 * Convenience function to add a list of controls.
2508 * @platform: platform to add controls to
2509 * @controls: array of controls to add
2510 * @num_controls: number of elements in the array
2512 * Return 0 for success, else error.
2514 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2515 const struct snd_kcontrol_new *controls, int num_controls)
2517 struct snd_card *card = platform->card->snd_card;
2519 return snd_soc_add_controls(card, platform->dev, controls, num_controls,
2522 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2525 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2526 * Convenience function to add a list of controls.
2528 * @soc_card: SoC card to add controls to
2529 * @controls: array of controls to add
2530 * @num_controls: number of elements in the array
2532 * Return 0 for success, else error.
2534 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2535 const struct snd_kcontrol_new *controls, int num_controls)
2537 struct snd_card *card = soc_card->snd_card;
2539 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2542 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2545 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2546 * Convienience function to add a list of controls.
2548 * @dai: DAI to add controls to
2549 * @controls: array of controls to add
2550 * @num_controls: number of elements in the array
2552 * Return 0 for success, else error.
2554 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2555 const struct snd_kcontrol_new *controls, int num_controls)
2557 struct snd_card *card = dai->card->snd_card;
2559 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2562 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2565 * snd_soc_info_enum_double - enumerated double mixer info callback
2566 * @kcontrol: mixer control
2567 * @uinfo: control element information
2569 * Callback to provide information about a double enumerated
2572 * Returns 0 for success.
2574 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2575 struct snd_ctl_elem_info *uinfo)
2577 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2579 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2580 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2581 uinfo->value.enumerated.items = e->items;
2583 if (uinfo->value.enumerated.item >= e->items)
2584 uinfo->value.enumerated.item = e->items - 1;
2585 strlcpy(uinfo->value.enumerated.name,
2586 e->texts[uinfo->value.enumerated.item],
2587 sizeof(uinfo->value.enumerated.name));
2590 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2593 * snd_soc_get_enum_double - enumerated double mixer get callback
2594 * @kcontrol: mixer control
2595 * @ucontrol: control element information
2597 * Callback to get the value of a double enumerated mixer.
2599 * Returns 0 for success.
2601 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2602 struct snd_ctl_elem_value *ucontrol)
2604 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2605 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2606 unsigned int val, item;
2607 unsigned int reg_val;
2609 reg_val = snd_soc_read(codec, e->reg);
2610 val = (reg_val >> e->shift_l) & e->mask;
2611 item = snd_soc_enum_val_to_item(e, val);
2612 ucontrol->value.enumerated.item[0] = item;
2613 if (e->shift_l != e->shift_r) {
2614 val = (reg_val >> e->shift_l) & e->mask;
2615 item = snd_soc_enum_val_to_item(e, val);
2616 ucontrol->value.enumerated.item[1] = item;
2621 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2624 * snd_soc_put_enum_double - enumerated double mixer put callback
2625 * @kcontrol: mixer control
2626 * @ucontrol: control element information
2628 * Callback to set the value of a double enumerated mixer.
2630 * Returns 0 for success.
2632 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2633 struct snd_ctl_elem_value *ucontrol)
2635 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2636 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2637 unsigned int *item = ucontrol->value.enumerated.item;
2641 if (item[0] >= e->items)
2643 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
2644 mask = e->mask << e->shift_l;
2645 if (e->shift_l != e->shift_r) {
2646 if (item[1] >= e->items)
2648 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
2649 mask |= e->mask << e->shift_r;
2652 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2654 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2657 * snd_soc_read_signed - Read a codec register and interprete as signed value
2659 * @reg: Register to read
2660 * @mask: Mask to use after shifting the register value
2661 * @shift: Right shift of register value
2662 * @sign_bit: Bit that describes if a number is negative or not.
2664 * This functions reads a codec register. The register value is shifted right
2665 * by 'shift' bits and masked with the given 'mask'. Afterwards it translates
2666 * the given registervalue into a signed integer if sign_bit is non-zero.
2668 * Returns the register value as signed int.
2670 static int snd_soc_read_signed(struct snd_soc_codec *codec, unsigned int reg,
2671 unsigned int mask, unsigned int shift, unsigned int sign_bit)
2676 val = (snd_soc_read(codec, reg) >> shift) & mask;
2681 /* non-negative number */
2682 if (!(val & BIT(sign_bit)))
2688 * The register most probably does not contain a full-sized int.
2689 * Instead we have an arbitrary number of bits in a signed
2690 * representation which has to be translated into a full-sized int.
2691 * This is done by filling up all bits above the sign-bit.
2693 ret |= ~((int)(BIT(sign_bit) - 1));
2699 * snd_soc_info_volsw - single mixer info callback
2700 * @kcontrol: mixer control
2701 * @uinfo: control element information
2703 * Callback to provide information about a single mixer control, or a double
2704 * mixer control that spans 2 registers.
2706 * Returns 0 for success.
2708 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2709 struct snd_ctl_elem_info *uinfo)
2711 struct soc_mixer_control *mc =
2712 (struct soc_mixer_control *)kcontrol->private_value;
2715 if (!mc->platform_max)
2716 mc->platform_max = mc->max;
2717 platform_max = mc->platform_max;
2719 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2720 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2722 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2724 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2725 uinfo->value.integer.min = 0;
2726 uinfo->value.integer.max = platform_max - mc->min;
2729 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2732 * snd_soc_get_volsw - single mixer get callback
2733 * @kcontrol: mixer control
2734 * @ucontrol: control element information
2736 * Callback to get the value of a single mixer control, or a double mixer
2737 * control that spans 2 registers.
2739 * Returns 0 for success.
2741 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2742 struct snd_ctl_elem_value *ucontrol)
2744 struct soc_mixer_control *mc =
2745 (struct soc_mixer_control *)kcontrol->private_value;
2746 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2747 unsigned int reg = mc->reg;
2748 unsigned int reg2 = mc->rreg;
2749 unsigned int shift = mc->shift;
2750 unsigned int rshift = mc->rshift;
2753 int sign_bit = mc->sign_bit;
2754 unsigned int mask = (1 << fls(max)) - 1;
2755 unsigned int invert = mc->invert;
2758 mask = BIT(sign_bit + 1) - 1;
2760 ucontrol->value.integer.value[0] = snd_soc_read_signed(codec, reg, mask,
2761 shift, sign_bit) - min;
2763 ucontrol->value.integer.value[0] =
2764 max - ucontrol->value.integer.value[0];
2766 if (snd_soc_volsw_is_stereo(mc)) {
2768 ucontrol->value.integer.value[1] =
2769 snd_soc_read_signed(codec, reg, mask, rshift,
2772 ucontrol->value.integer.value[1] =
2773 snd_soc_read_signed(codec, reg2, mask, shift,
2776 ucontrol->value.integer.value[1] =
2777 max - ucontrol->value.integer.value[1];
2782 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2785 * snd_soc_put_volsw - single mixer put callback
2786 * @kcontrol: mixer control
2787 * @ucontrol: control element information
2789 * Callback to set the value of a single mixer control, or a double mixer
2790 * control that spans 2 registers.
2792 * Returns 0 for success.
2794 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2795 struct snd_ctl_elem_value *ucontrol)
2797 struct soc_mixer_control *mc =
2798 (struct soc_mixer_control *)kcontrol->private_value;
2799 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2800 unsigned int reg = mc->reg;
2801 unsigned int reg2 = mc->rreg;
2802 unsigned int shift = mc->shift;
2803 unsigned int rshift = mc->rshift;
2806 unsigned int sign_bit = mc->sign_bit;
2807 unsigned int mask = (1 << fls(max)) - 1;
2808 unsigned int invert = mc->invert;
2810 bool type_2r = false;
2811 unsigned int val2 = 0;
2812 unsigned int val, val_mask;
2815 mask = BIT(sign_bit + 1) - 1;
2817 val = ((ucontrol->value.integer.value[0] + min) & mask);
2820 val_mask = mask << shift;
2822 if (snd_soc_volsw_is_stereo(mc)) {
2823 val2 = ((ucontrol->value.integer.value[1] + min) & mask);
2827 val_mask |= mask << rshift;
2828 val |= val2 << rshift;
2830 val2 = val2 << shift;
2834 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2839 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2843 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2846 * snd_soc_get_volsw_sx - single mixer get callback
2847 * @kcontrol: mixer control
2848 * @ucontrol: control element information
2850 * Callback to get the value of a single mixer control, or a double mixer
2851 * control that spans 2 registers.
2853 * Returns 0 for success.
2855 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
2856 struct snd_ctl_elem_value *ucontrol)
2858 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2859 struct soc_mixer_control *mc =
2860 (struct soc_mixer_control *)kcontrol->private_value;
2862 unsigned int reg = mc->reg;
2863 unsigned int reg2 = mc->rreg;
2864 unsigned int shift = mc->shift;
2865 unsigned int rshift = mc->rshift;
2868 int mask = (1 << (fls(min + max) - 1)) - 1;
2870 ucontrol->value.integer.value[0] =
2871 ((snd_soc_read(codec, reg) >> shift) - min) & mask;
2873 if (snd_soc_volsw_is_stereo(mc))
2874 ucontrol->value.integer.value[1] =
2875 ((snd_soc_read(codec, reg2) >> rshift) - min) & mask;
2879 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
2882 * snd_soc_put_volsw_sx - double mixer set callback
2883 * @kcontrol: mixer control
2884 * @uinfo: control element information
2886 * Callback to set the value of a double mixer control that spans 2 registers.
2888 * Returns 0 for success.
2890 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
2891 struct snd_ctl_elem_value *ucontrol)
2893 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2894 struct soc_mixer_control *mc =
2895 (struct soc_mixer_control *)kcontrol->private_value;
2897 unsigned int reg = mc->reg;
2898 unsigned int reg2 = mc->rreg;
2899 unsigned int shift = mc->shift;
2900 unsigned int rshift = mc->rshift;
2903 int mask = (1 << (fls(min + max) - 1)) - 1;
2905 unsigned short val, val_mask, val2 = 0;
2907 val_mask = mask << shift;
2908 val = (ucontrol->value.integer.value[0] + min) & mask;
2911 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2915 if (snd_soc_volsw_is_stereo(mc)) {
2916 val_mask = mask << rshift;
2917 val2 = (ucontrol->value.integer.value[1] + min) & mask;
2918 val2 = val2 << rshift;
2920 if (snd_soc_update_bits_locked(codec, reg2, val_mask, val2))
2925 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
2928 * snd_soc_info_volsw_s8 - signed mixer info callback
2929 * @kcontrol: mixer control
2930 * @uinfo: control element information
2932 * Callback to provide information about a signed mixer control.
2934 * Returns 0 for success.
2936 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2937 struct snd_ctl_elem_info *uinfo)
2939 struct soc_mixer_control *mc =
2940 (struct soc_mixer_control *)kcontrol->private_value;
2944 if (!mc->platform_max)
2945 mc->platform_max = mc->max;
2946 platform_max = mc->platform_max;
2948 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2950 uinfo->value.integer.min = 0;
2951 uinfo->value.integer.max = platform_max - min;
2954 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2957 * snd_soc_get_volsw_s8 - signed mixer get callback
2958 * @kcontrol: mixer control
2959 * @ucontrol: control element information
2961 * Callback to get the value of a signed mixer control.
2963 * Returns 0 for success.
2965 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2966 struct snd_ctl_elem_value *ucontrol)
2968 struct soc_mixer_control *mc =
2969 (struct soc_mixer_control *)kcontrol->private_value;
2970 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2971 unsigned int reg = mc->reg;
2973 int val = snd_soc_read(codec, reg);
2975 ucontrol->value.integer.value[0] =
2976 ((signed char)(val & 0xff))-min;
2977 ucontrol->value.integer.value[1] =
2978 ((signed char)((val >> 8) & 0xff))-min;
2981 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2984 * snd_soc_put_volsw_sgn - signed mixer put callback
2985 * @kcontrol: mixer control
2986 * @ucontrol: control element information
2988 * Callback to set the value of a signed mixer control.
2990 * Returns 0 for success.
2992 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2993 struct snd_ctl_elem_value *ucontrol)
2995 struct soc_mixer_control *mc =
2996 (struct soc_mixer_control *)kcontrol->private_value;
2997 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2998 unsigned int reg = mc->reg;
3002 val = (ucontrol->value.integer.value[0]+min) & 0xff;
3003 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
3005 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
3007 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
3010 * snd_soc_info_volsw_range - single mixer info callback with range.
3011 * @kcontrol: mixer control
3012 * @uinfo: control element information
3014 * Callback to provide information, within a range, about a single
3017 * returns 0 for success.
3019 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
3020 struct snd_ctl_elem_info *uinfo)
3022 struct soc_mixer_control *mc =
3023 (struct soc_mixer_control *)kcontrol->private_value;
3027 if (!mc->platform_max)
3028 mc->platform_max = mc->max;
3029 platform_max = mc->platform_max;
3031 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3032 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
3033 uinfo->value.integer.min = 0;
3034 uinfo->value.integer.max = platform_max - min;
3038 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
3041 * snd_soc_put_volsw_range - single mixer put value callback with range.
3042 * @kcontrol: mixer control
3043 * @ucontrol: control element information
3045 * Callback to set the value, within a range, for a single mixer control.
3047 * Returns 0 for success.
3049 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
3050 struct snd_ctl_elem_value *ucontrol)
3052 struct soc_mixer_control *mc =
3053 (struct soc_mixer_control *)kcontrol->private_value;
3054 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3055 unsigned int reg = mc->reg;
3056 unsigned int rreg = mc->rreg;
3057 unsigned int shift = mc->shift;
3060 unsigned int mask = (1 << fls(max)) - 1;
3061 unsigned int invert = mc->invert;
3062 unsigned int val, val_mask;
3065 val = ((ucontrol->value.integer.value[0] + min) & mask);
3068 val_mask = mask << shift;
3071 ret = snd_soc_update_bits_locked(codec, reg, val_mask, val);
3075 if (snd_soc_volsw_is_stereo(mc)) {
3076 val = ((ucontrol->value.integer.value[1] + min) & mask);
3079 val_mask = mask << shift;
3082 ret = snd_soc_update_bits_locked(codec, rreg, val_mask, val);
3087 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
3090 * snd_soc_get_volsw_range - single mixer get callback with range
3091 * @kcontrol: mixer control
3092 * @ucontrol: control element information
3094 * Callback to get the value, within a range, of a single mixer control.
3096 * Returns 0 for success.
3098 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
3099 struct snd_ctl_elem_value *ucontrol)
3101 struct soc_mixer_control *mc =
3102 (struct soc_mixer_control *)kcontrol->private_value;
3103 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3104 unsigned int reg = mc->reg;
3105 unsigned int rreg = mc->rreg;
3106 unsigned int shift = mc->shift;
3109 unsigned int mask = (1 << fls(max)) - 1;
3110 unsigned int invert = mc->invert;
3112 ucontrol->value.integer.value[0] =
3113 (snd_soc_read(codec, reg) >> shift) & mask;
3115 ucontrol->value.integer.value[0] =
3116 max - ucontrol->value.integer.value[0];
3117 ucontrol->value.integer.value[0] =
3118 ucontrol->value.integer.value[0] - min;
3120 if (snd_soc_volsw_is_stereo(mc)) {
3121 ucontrol->value.integer.value[1] =
3122 (snd_soc_read(codec, rreg) >> shift) & mask;
3124 ucontrol->value.integer.value[1] =
3125 max - ucontrol->value.integer.value[1];
3126 ucontrol->value.integer.value[1] =
3127 ucontrol->value.integer.value[1] - min;
3132 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
3135 * snd_soc_limit_volume - Set new limit to an existing volume control.
3137 * @codec: where to look for the control
3138 * @name: Name of the control
3139 * @max: new maximum limit
3141 * Return 0 for success, else error.
3143 int snd_soc_limit_volume(struct snd_soc_codec *codec,
3144 const char *name, int max)
3146 struct snd_card *card = codec->card->snd_card;
3147 struct snd_kcontrol *kctl;
3148 struct soc_mixer_control *mc;
3152 /* Sanity check for name and max */
3153 if (unlikely(!name || max <= 0))
3156 list_for_each_entry(kctl, &card->controls, list) {
3157 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
3163 mc = (struct soc_mixer_control *)kctl->private_value;
3164 if (max <= mc->max) {
3165 mc->platform_max = max;
3171 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
3173 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
3174 struct snd_ctl_elem_info *uinfo)
3176 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3177 struct soc_bytes *params = (void *)kcontrol->private_value;
3179 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
3180 uinfo->count = params->num_regs * codec->val_bytes;
3184 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
3186 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
3187 struct snd_ctl_elem_value *ucontrol)
3189 struct soc_bytes *params = (void *)kcontrol->private_value;
3190 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3193 if (codec->using_regmap)
3194 ret = regmap_raw_read(codec->control_data, params->base,
3195 ucontrol->value.bytes.data,
3196 params->num_regs * codec->val_bytes);
3200 /* Hide any masked bytes to ensure consistent data reporting */
3201 if (ret == 0 && params->mask) {
3202 switch (codec->val_bytes) {
3204 ucontrol->value.bytes.data[0] &= ~params->mask;
3207 ((u16 *)(&ucontrol->value.bytes.data))[0]
3208 &= cpu_to_be16(~params->mask);
3211 ((u32 *)(&ucontrol->value.bytes.data))[0]
3212 &= cpu_to_be32(~params->mask);
3221 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
3223 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
3224 struct snd_ctl_elem_value *ucontrol)
3226 struct soc_bytes *params = (void *)kcontrol->private_value;
3227 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3229 unsigned int val, mask;
3232 if (!codec->using_regmap)
3235 len = params->num_regs * codec->val_bytes;
3237 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
3242 * If we've got a mask then we need to preserve the register
3243 * bits. We shouldn't modify the incoming data so take a
3247 ret = regmap_read(codec->control_data, params->base, &val);
3251 val &= params->mask;
3253 switch (codec->val_bytes) {
3255 ((u8 *)data)[0] &= ~params->mask;
3256 ((u8 *)data)[0] |= val;
3259 mask = ~params->mask;
3260 ret = regmap_parse_val(codec->control_data,
3265 ((u16 *)data)[0] &= mask;
3267 ret = regmap_parse_val(codec->control_data,
3272 ((u16 *)data)[0] |= val;
3275 mask = ~params->mask;
3276 ret = regmap_parse_val(codec->control_data,
3281 ((u32 *)data)[0] &= mask;
3283 ret = regmap_parse_val(codec->control_data,
3288 ((u32 *)data)[0] |= val;
3296 ret = regmap_raw_write(codec->control_data, params->base,
3304 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
3307 * snd_soc_info_xr_sx - signed multi register info callback
3308 * @kcontrol: mreg control
3309 * @uinfo: control element information
3311 * Callback to provide information of a control that can
3312 * span multiple codec registers which together
3313 * forms a single signed value in a MSB/LSB manner.
3315 * Returns 0 for success.
3317 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
3318 struct snd_ctl_elem_info *uinfo)
3320 struct soc_mreg_control *mc =
3321 (struct soc_mreg_control *)kcontrol->private_value;
3322 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3324 uinfo->value.integer.min = mc->min;
3325 uinfo->value.integer.max = mc->max;
3329 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
3332 * snd_soc_get_xr_sx - signed multi register get callback
3333 * @kcontrol: mreg control
3334 * @ucontrol: control element information
3336 * Callback to get the value of a control that can span
3337 * multiple codec registers which together forms a single
3338 * signed value in a MSB/LSB manner. The control supports
3339 * specifying total no of bits used to allow for bitfields
3340 * across the multiple codec registers.
3342 * Returns 0 for success.
3344 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
3345 struct snd_ctl_elem_value *ucontrol)
3347 struct soc_mreg_control *mc =
3348 (struct soc_mreg_control *)kcontrol->private_value;
3349 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3350 unsigned int regbase = mc->regbase;
3351 unsigned int regcount = mc->regcount;
3352 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3353 unsigned int regwmask = (1<<regwshift)-1;
3354 unsigned int invert = mc->invert;
3355 unsigned long mask = (1UL<<mc->nbits)-1;
3359 unsigned long regval;
3362 for (i = 0; i < regcount; i++) {
3363 regval = snd_soc_read(codec, regbase+i) & regwmask;
3364 val |= regval << (regwshift*(regcount-i-1));
3367 if (min < 0 && val > max)
3371 ucontrol->value.integer.value[0] = val;
3375 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
3378 * snd_soc_put_xr_sx - signed multi register get callback
3379 * @kcontrol: mreg control
3380 * @ucontrol: control element information
3382 * Callback to set the value of a control that can span
3383 * multiple codec registers which together forms a single
3384 * signed value in a MSB/LSB manner. The control supports
3385 * specifying total no of bits used to allow for bitfields
3386 * across the multiple codec registers.
3388 * Returns 0 for success.
3390 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
3391 struct snd_ctl_elem_value *ucontrol)
3393 struct soc_mreg_control *mc =
3394 (struct soc_mreg_control *)kcontrol->private_value;
3395 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3396 unsigned int regbase = mc->regbase;
3397 unsigned int regcount = mc->regcount;
3398 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3399 unsigned int regwmask = (1<<regwshift)-1;
3400 unsigned int invert = mc->invert;
3401 unsigned long mask = (1UL<<mc->nbits)-1;
3403 long val = ucontrol->value.integer.value[0];
3404 unsigned int i, regval, regmask;
3410 for (i = 0; i < regcount; i++) {
3411 regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
3412 regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
3413 err = snd_soc_update_bits_locked(codec, regbase+i,
3421 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
3424 * snd_soc_get_strobe - strobe get callback
3425 * @kcontrol: mixer control
3426 * @ucontrol: control element information
3428 * Callback get the value of a strobe mixer control.
3430 * Returns 0 for success.
3432 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
3433 struct snd_ctl_elem_value *ucontrol)
3435 struct soc_mixer_control *mc =
3436 (struct soc_mixer_control *)kcontrol->private_value;
3437 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3438 unsigned int reg = mc->reg;
3439 unsigned int shift = mc->shift;
3440 unsigned int mask = 1 << shift;
3441 unsigned int invert = mc->invert != 0;
3442 unsigned int val = snd_soc_read(codec, reg) & mask;
3444 if (shift != 0 && val != 0)
3446 ucontrol->value.enumerated.item[0] = val ^ invert;
3450 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
3453 * snd_soc_put_strobe - strobe put callback
3454 * @kcontrol: mixer control
3455 * @ucontrol: control element information
3457 * Callback strobe a register bit to high then low (or the inverse)
3458 * in one pass of a single mixer enum control.
3460 * Returns 1 for success.
3462 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
3463 struct snd_ctl_elem_value *ucontrol)
3465 struct soc_mixer_control *mc =
3466 (struct soc_mixer_control *)kcontrol->private_value;
3467 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3468 unsigned int reg = mc->reg;
3469 unsigned int shift = mc->shift;
3470 unsigned int mask = 1 << shift;
3471 unsigned int invert = mc->invert != 0;
3472 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
3473 unsigned int val1 = (strobe ^ invert) ? mask : 0;
3474 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
3477 err = snd_soc_update_bits_locked(codec, reg, mask, val1);
3481 err = snd_soc_update_bits_locked(codec, reg, mask, val2);
3484 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);
3487 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3489 * @clk_id: DAI specific clock ID
3490 * @freq: new clock frequency in Hz
3491 * @dir: new clock direction - input/output.
3493 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3495 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
3496 unsigned int freq, int dir)
3498 if (dai->driver && dai->driver->ops->set_sysclk)
3499 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
3500 else if (dai->codec && dai->codec->driver->set_sysclk)
3501 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
3506 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
3509 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3511 * @clk_id: DAI specific clock ID
3512 * @source: Source for the clock
3513 * @freq: new clock frequency in Hz
3514 * @dir: new clock direction - input/output.
3516 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3518 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
3519 int source, unsigned int freq, int dir)
3521 if (codec->driver->set_sysclk)
3522 return codec->driver->set_sysclk(codec, clk_id, source,
3527 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
3530 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3532 * @div_id: DAI specific clock divider ID
3533 * @div: new clock divisor.
3535 * Configures the clock dividers. This is used to derive the best DAI bit and
3536 * frame clocks from the system or master clock. It's best to set the DAI bit
3537 * and frame clocks as low as possible to save system power.
3539 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
3540 int div_id, int div)
3542 if (dai->driver && dai->driver->ops->set_clkdiv)
3543 return dai->driver->ops->set_clkdiv(dai, div_id, div);
3547 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
3550 * snd_soc_dai_set_pll - configure DAI PLL.
3552 * @pll_id: DAI specific PLL ID
3553 * @source: DAI specific source for the PLL
3554 * @freq_in: PLL input clock frequency in Hz
3555 * @freq_out: requested PLL output clock frequency in Hz
3557 * Configures and enables PLL to generate output clock based on input clock.
3559 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
3560 unsigned int freq_in, unsigned int freq_out)
3562 if (dai->driver && dai->driver->ops->set_pll)
3563 return dai->driver->ops->set_pll(dai, pll_id, source,
3565 else if (dai->codec && dai->codec->driver->set_pll)
3566 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
3571 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
3574 * snd_soc_codec_set_pll - configure codec PLL.
3576 * @pll_id: DAI specific PLL ID
3577 * @source: DAI specific source for the PLL
3578 * @freq_in: PLL input clock frequency in Hz
3579 * @freq_out: requested PLL output clock frequency in Hz
3581 * Configures and enables PLL to generate output clock based on input clock.
3583 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
3584 unsigned int freq_in, unsigned int freq_out)
3586 if (codec->driver->set_pll)
3587 return codec->driver->set_pll(codec, pll_id, source,
3592 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
3595 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
3597 * @ratio Ratio of BCLK to Sample rate.
3599 * Configures the DAI for a preset BCLK to sample rate ratio.
3601 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
3603 if (dai->driver && dai->driver->ops->set_bclk_ratio)
3604 return dai->driver->ops->set_bclk_ratio(dai, ratio);
3608 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);
3611 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3613 * @fmt: SND_SOC_DAIFMT_ format value.
3615 * Configures the DAI hardware format and clocking.
3617 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
3619 if (dai->driver == NULL)
3621 if (dai->driver->ops->set_fmt == NULL)
3623 return dai->driver->ops->set_fmt(dai, fmt);
3625 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
3628 * snd_soc_of_xlate_tdm_slot - generate tx/rx slot mask.
3629 * @slots: Number of slots in use.
3630 * @tx_mask: bitmask representing active TX slots.
3631 * @rx_mask: bitmask representing active RX slots.
3633 * Generates the TDM tx and rx slot default masks for DAI.
3635 static int snd_soc_of_xlate_tdm_slot_mask(unsigned int slots,
3636 unsigned int *tx_mask,
3637 unsigned int *rx_mask)
3639 if (*tx_mask || *rx_mask)
3645 *tx_mask = (1 << slots) - 1;
3646 *rx_mask = (1 << slots) - 1;
3652 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3654 * @tx_mask: bitmask representing active TX slots.
3655 * @rx_mask: bitmask representing active RX slots.
3656 * @slots: Number of slots in use.
3657 * @slot_width: Width in bits for each slot.
3659 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3662 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
3663 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3665 if (dai->driver && dai->driver->ops->of_xlate_tdm_slot_mask)
3666 dai->driver->ops->of_xlate_tdm_slot_mask(slots,
3667 &tx_mask, &rx_mask);
3669 snd_soc_of_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
3671 if (dai->driver && dai->driver->ops->set_tdm_slot)
3672 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3677 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3680 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3682 * @tx_num: how many TX channels
3683 * @tx_slot: pointer to an array which imply the TX slot number channel
3685 * @rx_num: how many RX channels
3686 * @rx_slot: pointer to an array which imply the RX slot number channel
3689 * configure the relationship between channel number and TDM slot number.
3691 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3692 unsigned int tx_num, unsigned int *tx_slot,
3693 unsigned int rx_num, unsigned int *rx_slot)
3695 if (dai->driver && dai->driver->ops->set_channel_map)
3696 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3701 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3704 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3706 * @tristate: tristate enable
3708 * Tristates the DAI so that others can use it.
3710 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3712 if (dai->driver && dai->driver->ops->set_tristate)
3713 return dai->driver->ops->set_tristate(dai, tristate);
3717 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3720 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3722 * @mute: mute enable
3723 * @direction: stream to mute
3725 * Mutes the DAI DAC.
3727 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
3733 if (dai->driver->ops->mute_stream)
3734 return dai->driver->ops->mute_stream(dai, mute, direction);
3735 else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
3736 dai->driver->ops->digital_mute)
3737 return dai->driver->ops->digital_mute(dai, mute);
3741 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3744 * snd_soc_register_card - Register a card with the ASoC core
3746 * @card: Card to register
3749 int snd_soc_register_card(struct snd_soc_card *card)
3753 if (!card->name || !card->dev)
3756 for (i = 0; i < card->num_links; i++) {
3757 struct snd_soc_dai_link *link = &card->dai_link[i];
3760 * Codec must be specified by 1 of name or OF node,
3761 * not both or neither.
3763 if (!!link->codec_name == !!link->codec_of_node) {
3765 "ASoC: Neither/both codec name/of_node are set for %s\n",
3769 /* Codec DAI name must be specified */
3770 if (!link->codec_dai_name) {
3772 "ASoC: codec_dai_name not set for %s\n",
3778 * Platform may be specified by either name or OF node, but
3779 * can be left unspecified, and a dummy platform will be used.
3781 if (link->platform_name && link->platform_of_node) {
3783 "ASoC: Both platform name/of_node are set for %s\n",
3789 * CPU device may be specified by either name or OF node, but
3790 * can be left unspecified, and will be matched based on DAI
3793 if (link->cpu_name && link->cpu_of_node) {
3795 "ASoC: Neither/both cpu name/of_node are set for %s\n",
3800 * At least one of CPU DAI name or CPU device name/node must be
3803 if (!link->cpu_dai_name &&
3804 !(link->cpu_name || link->cpu_of_node)) {
3806 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
3812 dev_set_drvdata(card->dev, card);
3814 snd_soc_initialize_card_lists(card);
3816 soc_init_card_debugfs(card);
3818 card->rtd = devm_kzalloc(card->dev,
3819 sizeof(struct snd_soc_pcm_runtime) *
3820 (card->num_links + card->num_aux_devs),
3822 if (card->rtd == NULL)
3825 card->rtd_aux = &card->rtd[card->num_links];
3827 for (i = 0; i < card->num_links; i++)
3828 card->rtd[i].dai_link = &card->dai_link[i];
3830 INIT_LIST_HEAD(&card->list);
3831 INIT_LIST_HEAD(&card->dapm_dirty);
3832 card->instantiated = 0;
3833 mutex_init(&card->mutex);
3834 mutex_init(&card->dapm_mutex);
3836 ret = snd_soc_instantiate_card(card);
3838 soc_cleanup_card_debugfs(card);
3840 /* deactivate pins to sleep state */
3841 for (i = 0; i < card->num_rtd; i++) {
3842 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
3843 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
3844 if (!codec_dai->active)
3845 pinctrl_pm_select_sleep_state(codec_dai->dev);
3846 if (!cpu_dai->active)
3847 pinctrl_pm_select_sleep_state(cpu_dai->dev);
3852 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3855 * snd_soc_unregister_card - Unregister a card with the ASoC core
3857 * @card: Card to unregister
3860 int snd_soc_unregister_card(struct snd_soc_card *card)
3862 if (card->instantiated)
3863 soc_cleanup_card_resources(card);
3864 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
3868 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3871 * Simplify DAI link configuration by removing ".-1" from device names
3872 * and sanitizing names.
3874 static char *fmt_single_name(struct device *dev, int *id)
3876 char *found, name[NAME_SIZE];
3879 if (dev_name(dev) == NULL)
3882 strlcpy(name, dev_name(dev), NAME_SIZE);
3884 /* are we a "%s.%d" name (platform and SPI components) */
3885 found = strstr(name, dev->driver->name);
3888 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3890 /* discard ID from name if ID == -1 */
3892 found[strlen(dev->driver->name)] = '\0';
3896 /* I2C component devices are named "bus-addr" */
3897 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3898 char tmp[NAME_SIZE];
3900 /* create unique ID number from I2C addr and bus */
3901 *id = ((id1 & 0xffff) << 16) + id2;
3903 /* sanitize component name for DAI link creation */
3904 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3905 strlcpy(name, tmp, NAME_SIZE);
3910 return kstrdup(name, GFP_KERNEL);
3914 * Simplify DAI link naming for single devices with multiple DAIs by removing
3915 * any ".-1" and using the DAI name (instead of device name).
3917 static inline char *fmt_multiple_name(struct device *dev,
3918 struct snd_soc_dai_driver *dai_drv)
3920 if (dai_drv->name == NULL) {
3922 "ASoC: error - multiple DAI %s registered with no name\n",
3927 return kstrdup(dai_drv->name, GFP_KERNEL);
3931 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
3933 * @component: The component for which the DAIs should be unregistered
3935 static void snd_soc_unregister_dais(struct snd_soc_component *component)
3937 struct snd_soc_dai *dai, *_dai;
3939 list_for_each_entry_safe(dai, _dai, &component->dai_list, list) {
3940 dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
3942 list_del(&dai->list);
3949 * snd_soc_register_dais - Register a DAI with the ASoC core
3951 * @component: The component the DAIs are registered for
3952 * @codec: The CODEC that the DAIs are registered for, NULL if the component is
3954 * @dai_drv: DAI driver to use for the DAIs
3955 * @count: Number of DAIs
3956 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
3959 static int snd_soc_register_dais(struct snd_soc_component *component,
3960 struct snd_soc_codec *codec, struct snd_soc_dai_driver *dai_drv,
3961 size_t count, bool legacy_dai_naming)
3963 struct device *dev = component->dev;
3964 struct snd_soc_dai *dai;
3968 dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
3970 for (i = 0; i < count; i++) {
3972 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3979 * Back in the old days when we still had component-less DAIs,
3980 * instead of having a static name, component-less DAIs would
3981 * inherit the name of the parent device so it is possible to
3982 * register multiple instances of the DAI. We still need to keep
3983 * the same naming style even though those DAIs are not
3984 * component-less anymore.
3986 if (count == 1 && legacy_dai_naming) {
3987 dai->name = fmt_single_name(dev, &dai->id);
3989 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3991 dai->id = dai_drv[i].id;
3995 if (dai->name == NULL) {
4001 dai->component = component;
4004 dai->driver = &dai_drv[i];
4005 dai->dapm.dev = dev;
4006 if (!dai->driver->ops)
4007 dai->driver->ops = &null_dai_ops;
4010 dai->dapm.idle_bias_off = 1;
4012 list_add(&dai->list, &component->dai_list);
4014 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
4020 snd_soc_unregister_dais(component);
4026 * snd_soc_register_component - Register a component with the ASoC core
4030 __snd_soc_register_component(struct device *dev,
4031 struct snd_soc_component *cmpnt,
4032 const struct snd_soc_component_driver *cmpnt_drv,
4033 struct snd_soc_codec *codec,
4034 struct snd_soc_dai_driver *dai_drv,
4035 int num_dai, bool allow_single_dai)
4039 dev_dbg(dev, "component register %s\n", dev_name(dev));
4042 dev_err(dev, "ASoC: Failed to connecting component\n");
4046 cmpnt->name = fmt_single_name(dev, &cmpnt->id);
4048 dev_err(dev, "ASoC: Failed to simplifying name\n");
4053 cmpnt->driver = cmpnt_drv;
4054 cmpnt->dai_drv = dai_drv;
4055 cmpnt->num_dai = num_dai;
4056 INIT_LIST_HEAD(&cmpnt->dai_list);
4058 ret = snd_soc_register_dais(cmpnt, codec, dai_drv, num_dai,
4061 dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret);
4062 goto error_component_name;
4065 mutex_lock(&client_mutex);
4066 list_add(&cmpnt->list, &component_list);
4067 mutex_unlock(&client_mutex);
4069 dev_dbg(cmpnt->dev, "ASoC: Registered component '%s'\n", cmpnt->name);
4073 error_component_name:
4079 int snd_soc_register_component(struct device *dev,
4080 const struct snd_soc_component_driver *cmpnt_drv,
4081 struct snd_soc_dai_driver *dai_drv,
4084 struct snd_soc_component *cmpnt;
4086 cmpnt = devm_kzalloc(dev, sizeof(*cmpnt), GFP_KERNEL);
4088 dev_err(dev, "ASoC: Failed to allocate memory\n");
4092 cmpnt->ignore_pmdown_time = true;
4094 return __snd_soc_register_component(dev, cmpnt, cmpnt_drv, NULL,
4095 dai_drv, num_dai, true);
4097 EXPORT_SYMBOL_GPL(snd_soc_register_component);
4100 * snd_soc_unregister_component - Unregister a component from the ASoC core
4103 void snd_soc_unregister_component(struct device *dev)
4105 struct snd_soc_component *cmpnt;
4107 list_for_each_entry(cmpnt, &component_list, list) {
4108 if (dev == cmpnt->dev)
4114 snd_soc_unregister_dais(cmpnt);
4116 mutex_lock(&client_mutex);
4117 list_del(&cmpnt->list);
4118 mutex_unlock(&client_mutex);
4120 dev_dbg(dev, "ASoC: Unregistered component '%s'\n", cmpnt->name);
4123 EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
4126 * snd_soc_add_platform - Add a platform to the ASoC core
4127 * @dev: The parent device for the platform
4128 * @platform: The platform to add
4129 * @platform_driver: The driver for the platform
4131 int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
4132 const struct snd_soc_platform_driver *platform_drv)
4134 /* create platform component name */
4135 platform->name = fmt_single_name(dev, &platform->id);
4136 if (platform->name == NULL)
4139 platform->dev = dev;
4140 platform->driver = platform_drv;
4141 platform->dapm.dev = dev;
4142 platform->dapm.platform = platform;
4143 platform->dapm.stream_event = platform_drv->stream_event;
4144 mutex_init(&platform->mutex);
4146 mutex_lock(&client_mutex);
4147 list_add(&platform->list, &platform_list);
4148 mutex_unlock(&client_mutex);
4150 dev_dbg(dev, "ASoC: Registered platform '%s'\n", platform->name);
4154 EXPORT_SYMBOL_GPL(snd_soc_add_platform);
4157 * snd_soc_register_platform - Register a platform with the ASoC core
4159 * @platform: platform to register
4161 int snd_soc_register_platform(struct device *dev,
4162 const struct snd_soc_platform_driver *platform_drv)
4164 struct snd_soc_platform *platform;
4167 dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
4169 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
4170 if (platform == NULL)
4173 ret = snd_soc_add_platform(dev, platform, platform_drv);
4179 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
4182 * snd_soc_remove_platform - Remove a platform from the ASoC core
4183 * @platform: the platform to remove
4185 void snd_soc_remove_platform(struct snd_soc_platform *platform)
4187 mutex_lock(&client_mutex);
4188 list_del(&platform->list);
4189 mutex_unlock(&client_mutex);
4191 dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
4193 kfree(platform->name);
4195 EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
4197 struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
4199 struct snd_soc_platform *platform;
4201 list_for_each_entry(platform, &platform_list, list) {
4202 if (dev == platform->dev)
4208 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
4211 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
4213 * @platform: platform to unregister
4215 void snd_soc_unregister_platform(struct device *dev)
4217 struct snd_soc_platform *platform;
4219 platform = snd_soc_lookup_platform(dev);
4223 snd_soc_remove_platform(platform);
4226 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
4228 static u64 codec_format_map[] = {
4229 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
4230 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
4231 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
4232 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
4233 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
4234 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
4235 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4236 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4237 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
4238 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
4239 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
4240 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
4241 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
4242 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
4243 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
4244 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
4247 /* Fix up the DAI formats for endianness: codecs don't actually see
4248 * the endianness of the data but we're using the CPU format
4249 * definitions which do need to include endianness so we ensure that
4250 * codec DAIs always have both big and little endian variants set.
4252 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
4256 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
4257 if (stream->formats & codec_format_map[i])
4258 stream->formats |= codec_format_map[i];
4262 * snd_soc_register_codec - Register a codec with the ASoC core
4264 * @codec: codec to register
4266 int snd_soc_register_codec(struct device *dev,
4267 const struct snd_soc_codec_driver *codec_drv,
4268 struct snd_soc_dai_driver *dai_drv,
4271 struct snd_soc_codec *codec;
4274 dev_dbg(dev, "codec register %s\n", dev_name(dev));
4276 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
4280 /* create CODEC component name */
4281 codec->name = fmt_single_name(dev, &codec->id);
4282 if (codec->name == NULL) {
4287 codec->write = codec_drv->write;
4288 codec->read = codec_drv->read;
4289 codec->volatile_register = codec_drv->volatile_register;
4290 codec->readable_register = codec_drv->readable_register;
4291 codec->writable_register = codec_drv->writable_register;
4292 codec->component.ignore_pmdown_time = codec_drv->ignore_pmdown_time;
4293 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
4294 codec->dapm.dev = dev;
4295 codec->dapm.codec = codec;
4296 codec->dapm.seq_notifier = codec_drv->seq_notifier;
4297 codec->dapm.stream_event = codec_drv->stream_event;
4299 codec->driver = codec_drv;
4300 codec->num_dai = num_dai;
4301 mutex_init(&codec->mutex);
4303 for (i = 0; i < num_dai; i++) {
4304 fixup_codec_formats(&dai_drv[i].playback);
4305 fixup_codec_formats(&dai_drv[i].capture);
4308 mutex_lock(&client_mutex);
4309 list_add(&codec->list, &codec_list);
4310 mutex_unlock(&client_mutex);
4312 /* register component */
4313 ret = __snd_soc_register_component(dev, &codec->component,
4314 &codec_drv->component_driver,
4315 codec, dai_drv, num_dai, false);
4317 dev_err(codec->dev, "ASoC: Failed to regster component: %d\n", ret);
4318 goto fail_codec_name;
4321 dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n", codec->name);
4325 mutex_lock(&client_mutex);
4326 list_del(&codec->list);
4327 mutex_unlock(&client_mutex);
4334 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
4337 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4339 * @codec: codec to unregister
4341 void snd_soc_unregister_codec(struct device *dev)
4343 struct snd_soc_codec *codec;
4345 list_for_each_entry(codec, &codec_list, list) {
4346 if (dev == codec->dev)
4352 snd_soc_unregister_component(dev);
4354 mutex_lock(&client_mutex);
4355 list_del(&codec->list);
4356 mutex_unlock(&client_mutex);
4358 dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n", codec->name);
4360 snd_soc_cache_exit(codec);
4364 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
4366 /* Retrieve a card's name from device tree */
4367 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
4368 const char *propname)
4370 struct device_node *np = card->dev->of_node;
4373 ret = of_property_read_string_index(np, propname, 0, &card->name);
4375 * EINVAL means the property does not exist. This is fine providing
4376 * card->name was previously set, which is checked later in
4377 * snd_soc_register_card.
4379 if (ret < 0 && ret != -EINVAL) {
4381 "ASoC: Property '%s' could not be read: %d\n",
4388 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
4390 static const struct snd_soc_dapm_widget simple_widgets[] = {
4391 SND_SOC_DAPM_MIC("Microphone", NULL),
4392 SND_SOC_DAPM_LINE("Line", NULL),
4393 SND_SOC_DAPM_HP("Headphone", NULL),
4394 SND_SOC_DAPM_SPK("Speaker", NULL),
4397 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
4398 const char *propname)
4400 struct device_node *np = card->dev->of_node;
4401 struct snd_soc_dapm_widget *widgets;
4402 const char *template, *wname;
4403 int i, j, num_widgets, ret;
4405 num_widgets = of_property_count_strings(np, propname);
4406 if (num_widgets < 0) {
4408 "ASoC: Property '%s' does not exist\n", propname);
4411 if (num_widgets & 1) {
4413 "ASoC: Property '%s' length is not even\n", propname);
4419 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4424 widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets),
4428 "ASoC: Could not allocate memory for widgets\n");
4432 for (i = 0; i < num_widgets; i++) {
4433 ret = of_property_read_string_index(np, propname,
4437 "ASoC: Property '%s' index %d read error:%d\n",
4438 propname, 2 * i, ret);
4442 for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) {
4443 if (!strncmp(template, simple_widgets[j].name,
4444 strlen(simple_widgets[j].name))) {
4445 widgets[i] = simple_widgets[j];
4450 if (j >= ARRAY_SIZE(simple_widgets)) {
4452 "ASoC: DAPM widget '%s' is not supported\n",
4457 ret = of_property_read_string_index(np, propname,
4462 "ASoC: Property '%s' index %d read error:%d\n",
4463 propname, (2 * i) + 1, ret);
4467 widgets[i].name = wname;
4470 card->dapm_widgets = widgets;
4471 card->num_dapm_widgets = num_widgets;
4475 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets);
4477 int snd_soc_of_parse_tdm_slot(struct device_node *np,
4478 unsigned int *slots,
4479 unsigned int *slot_width)
4484 if (of_property_read_bool(np, "dai-tdm-slot-num")) {
4485 ret = of_property_read_u32(np, "dai-tdm-slot-num", &val);
4493 if (of_property_read_bool(np, "dai-tdm-slot-width")) {
4494 ret = of_property_read_u32(np, "dai-tdm-slot-width", &val);
4504 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot);
4506 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
4507 const char *propname)
4509 struct device_node *np = card->dev->of_node;
4511 struct snd_soc_dapm_route *routes;
4514 num_routes = of_property_count_strings(np, propname);
4515 if (num_routes < 0 || num_routes & 1) {
4517 "ASoC: Property '%s' does not exist or its length is not even\n",
4523 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4528 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
4532 "ASoC: Could not allocate DAPM route table\n");
4536 for (i = 0; i < num_routes; i++) {
4537 ret = of_property_read_string_index(np, propname,
4538 2 * i, &routes[i].sink);
4541 "ASoC: Property '%s' index %d could not be read: %d\n",
4542 propname, 2 * i, ret);
4545 ret = of_property_read_string_index(np, propname,
4546 (2 * i) + 1, &routes[i].source);
4549 "ASoC: Property '%s' index %d could not be read: %d\n",
4550 propname, (2 * i) + 1, ret);
4555 card->num_dapm_routes = num_routes;
4556 card->dapm_routes = routes;
4560 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
4562 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
4567 unsigned int format = 0;
4573 } of_fmt_table[] = {
4574 { "i2s", SND_SOC_DAIFMT_I2S },
4575 { "right_j", SND_SOC_DAIFMT_RIGHT_J },
4576 { "left_j", SND_SOC_DAIFMT_LEFT_J },
4577 { "dsp_a", SND_SOC_DAIFMT_DSP_A },
4578 { "dsp_b", SND_SOC_DAIFMT_DSP_B },
4579 { "ac97", SND_SOC_DAIFMT_AC97 },
4580 { "pdm", SND_SOC_DAIFMT_PDM},
4581 { "msb", SND_SOC_DAIFMT_MSB },
4582 { "lsb", SND_SOC_DAIFMT_LSB },
4589 * check "[prefix]format = xxx"
4590 * SND_SOC_DAIFMT_FORMAT_MASK area
4592 snprintf(prop, sizeof(prop), "%sformat", prefix);
4593 ret = of_property_read_string(np, prop, &str);
4595 for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
4596 if (strcmp(str, of_fmt_table[i].name) == 0) {
4597 format |= of_fmt_table[i].val;
4604 * check "[prefix]continuous-clock"
4605 * SND_SOC_DAIFMT_CLOCK_MASK area
4607 snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
4608 if (of_get_property(np, prop, NULL))
4609 format |= SND_SOC_DAIFMT_CONT;
4611 format |= SND_SOC_DAIFMT_GATED;
4614 * check "[prefix]bitclock-inversion"
4615 * check "[prefix]frame-inversion"
4616 * SND_SOC_DAIFMT_INV_MASK area
4618 snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
4619 bit = !!of_get_property(np, prop, NULL);
4621 snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
4622 frame = !!of_get_property(np, prop, NULL);
4624 switch ((bit << 4) + frame) {
4626 format |= SND_SOC_DAIFMT_IB_IF;
4629 format |= SND_SOC_DAIFMT_IB_NF;
4632 format |= SND_SOC_DAIFMT_NB_IF;
4635 /* SND_SOC_DAIFMT_NB_NF is default */
4640 * check "[prefix]bitclock-master"
4641 * check "[prefix]frame-master"
4642 * SND_SOC_DAIFMT_MASTER_MASK area
4644 snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
4645 bit = !!of_get_property(np, prop, NULL);
4647 snprintf(prop, sizeof(prop), "%sframe-master", prefix);
4648 frame = !!of_get_property(np, prop, NULL);
4650 switch ((bit << 4) + frame) {
4652 format |= SND_SOC_DAIFMT_CBM_CFM;
4655 format |= SND_SOC_DAIFMT_CBM_CFS;
4658 format |= SND_SOC_DAIFMT_CBS_CFM;
4661 format |= SND_SOC_DAIFMT_CBS_CFS;
4667 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
4669 int snd_soc_of_get_dai_name(struct device_node *of_node,
4670 const char **dai_name)
4672 struct snd_soc_component *pos;
4673 struct of_phandle_args args;
4676 ret = of_parse_phandle_with_args(of_node, "sound-dai",
4677 "#sound-dai-cells", 0, &args);
4681 ret = -EPROBE_DEFER;
4683 mutex_lock(&client_mutex);
4684 list_for_each_entry(pos, &component_list, list) {
4685 if (pos->dev->of_node != args.np)
4688 if (pos->driver->of_xlate_dai_name) {
4689 ret = pos->driver->of_xlate_dai_name(pos, &args, dai_name);
4693 switch (args.args_count) {
4695 id = 0; /* same as dai_drv[0] */
4705 if (id < 0 || id >= pos->num_dai) {
4712 *dai_name = pos->dai_drv[id].name;
4714 *dai_name = pos->name;
4719 mutex_unlock(&client_mutex);
4721 of_node_put(args.np);
4725 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
4727 static int __init snd_soc_init(void)
4729 #ifdef CONFIG_DEBUG_FS
4730 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
4731 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
4732 pr_warn("ASoC: Failed to create debugfs directory\n");
4733 snd_soc_debugfs_root = NULL;
4736 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
4738 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4740 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
4742 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4744 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
4745 &platform_list_fops))
4746 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4749 snd_soc_util_init();
4751 return platform_driver_register(&soc_driver);
4753 module_init(snd_soc_init);
4755 static void __exit snd_soc_exit(void)
4757 snd_soc_util_exit();
4759 #ifdef CONFIG_DEBUG_FS
4760 debugfs_remove_recursive(snd_soc_debugfs_root);
4762 platform_driver_unregister(&soc_driver);
4764 module_exit(snd_soc_exit);
4766 /* Module information */
4767 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4768 MODULE_DESCRIPTION("ALSA SoC Core");
4769 MODULE_LICENSE("GPL");
4770 MODULE_ALIAS("platform:soc-audio");