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 ret = snd_soc_dapm_new_controls(&codec->dapm,
1132 driver->dapm_widgets,
1133 driver->num_dapm_widgets);
1137 "Failed to create new controls %d\n", ret);
1142 /* Create DAPM widgets for each DAI stream */
1143 list_for_each_entry(dai, &codec->component.dai_list, list) {
1144 ret = snd_soc_dapm_new_dai_widgets(&codec->dapm, dai);
1148 "Failed to create DAI widgets %d\n", ret);
1153 codec->dapm.idle_bias_off = driver->idle_bias_off;
1155 if (!codec->write && dev_get_regmap(codec->dev, NULL)) {
1156 /* Set the default I/O up try regmap */
1157 ret = snd_soc_codec_set_cache_io(codec, NULL);
1160 "Failed to set cache I/O: %d\n", ret);
1165 if (driver->probe) {
1166 ret = driver->probe(codec);
1169 "ASoC: failed to probe CODEC %d\n", ret);
1172 WARN(codec->dapm.idle_bias_off &&
1173 codec->dapm.bias_level != SND_SOC_BIAS_OFF,
1174 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1178 if (driver->controls)
1179 snd_soc_add_codec_controls(codec, driver->controls,
1180 driver->num_controls);
1181 if (driver->dapm_routes)
1182 snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
1183 driver->num_dapm_routes);
1185 /* mark codec as probed and add to card codec list */
1187 list_add(&codec->card_list, &card->codec_dev_list);
1188 list_add(&codec->dapm.list, &card->dapm_list);
1193 soc_cleanup_codec_debugfs(codec);
1194 module_put(codec->dev->driver->owner);
1199 static int soc_probe_platform(struct snd_soc_card *card,
1200 struct snd_soc_platform *platform)
1203 const struct snd_soc_platform_driver *driver = platform->driver;
1204 struct snd_soc_component *component;
1205 struct snd_soc_dai *dai;
1207 platform->card = card;
1208 platform->dapm.card = card;
1210 if (!try_module_get(platform->dev->driver->owner))
1213 soc_init_platform_debugfs(platform);
1215 if (driver->dapm_widgets)
1216 snd_soc_dapm_new_controls(&platform->dapm,
1217 driver->dapm_widgets, driver->num_dapm_widgets);
1219 /* Create DAPM widgets for each DAI stream */
1220 list_for_each_entry(component, &component_list, list) {
1221 if (component->dev != platform->dev)
1223 list_for_each_entry(dai, &component->dai_list, list)
1224 snd_soc_dapm_new_dai_widgets(&platform->dapm, dai);
1227 platform->dapm.idle_bias_off = 1;
1229 if (driver->probe) {
1230 ret = driver->probe(platform);
1232 dev_err(platform->dev,
1233 "ASoC: failed to probe platform %d\n", ret);
1238 if (driver->controls)
1239 snd_soc_add_platform_controls(platform, driver->controls,
1240 driver->num_controls);
1241 if (driver->dapm_routes)
1242 snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
1243 driver->num_dapm_routes);
1245 /* mark platform as probed and add to card platform list */
1246 platform->probed = 1;
1247 list_add(&platform->card_list, &card->platform_dev_list);
1248 list_add(&platform->dapm.list, &card->dapm_list);
1253 soc_cleanup_platform_debugfs(platform);
1254 module_put(platform->dev->driver->owner);
1259 static void rtd_release(struct device *dev)
1264 static int soc_post_component_init(struct snd_soc_card *card,
1265 struct snd_soc_codec *codec,
1266 int num, int dailess)
1268 struct snd_soc_dai_link *dai_link = NULL;
1269 struct snd_soc_aux_dev *aux_dev = NULL;
1270 struct snd_soc_pcm_runtime *rtd;
1275 dai_link = &card->dai_link[num];
1276 rtd = &card->rtd[num];
1277 name = dai_link->name;
1279 aux_dev = &card->aux_dev[num];
1280 rtd = &card->rtd_aux[num];
1281 name = aux_dev->name;
1285 /* do machine specific initialization */
1286 if (!dailess && dai_link->init)
1287 ret = dai_link->init(rtd);
1288 else if (dailess && aux_dev->init)
1289 ret = aux_dev->init(&codec->dapm);
1291 dev_err(card->dev, "ASoC: failed to init %s: %d\n", name, ret);
1295 /* register the rtd device */
1298 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1301 device_initialize(rtd->dev);
1302 rtd->dev->parent = card->dev;
1303 rtd->dev->release = rtd_release;
1304 rtd->dev->init_name = name;
1305 dev_set_drvdata(rtd->dev, rtd);
1306 mutex_init(&rtd->pcm_mutex);
1307 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1308 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1309 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1310 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1311 ret = device_add(rtd->dev);
1313 /* calling put_device() here to free the rtd->dev */
1314 put_device(rtd->dev);
1316 "ASoC: failed to register runtime device: %d\n", ret);
1319 rtd->dev_registered = 1;
1321 /* add DAPM sysfs entries for this codec */
1322 ret = snd_soc_dapm_sys_add(rtd->dev);
1325 "ASoC: failed to add codec dapm sysfs entries: %d\n", ret);
1327 /* add codec sysfs entries */
1328 ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
1331 "ASoC: failed to add codec sysfs files: %d\n", ret);
1333 #ifdef CONFIG_DEBUG_FS
1334 /* add DPCM sysfs entries */
1335 if (!dailess && !dai_link->dynamic)
1338 ret = soc_dpcm_debugfs_add(rtd);
1340 dev_err(rtd->dev, "ASoC: failed to add dpcm sysfs entries: %d\n", ret);
1347 static int soc_probe_link_components(struct snd_soc_card *card, int num,
1350 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1351 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1352 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1353 struct snd_soc_platform *platform = rtd->platform;
1356 /* probe the CPU-side component, if it is a CODEC */
1357 if (cpu_dai->codec &&
1358 !cpu_dai->codec->probed &&
1359 cpu_dai->codec->driver->probe_order == order) {
1360 ret = soc_probe_codec(card, cpu_dai->codec);
1365 /* probe the CODEC-side component */
1366 if (!codec_dai->codec->probed &&
1367 codec_dai->codec->driver->probe_order == order) {
1368 ret = soc_probe_codec(card, codec_dai->codec);
1373 /* probe the platform */
1374 if (!platform->probed &&
1375 platform->driver->probe_order == order) {
1376 ret = soc_probe_platform(card, platform);
1384 static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
1386 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1387 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1388 struct snd_soc_codec *codec = rtd->codec;
1389 struct snd_soc_platform *platform = rtd->platform;
1390 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1391 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1392 struct snd_soc_dapm_widget *play_w, *capture_w;
1395 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1396 card->name, num, order);
1398 /* config components */
1399 cpu_dai->platform = platform;
1400 codec_dai->card = card;
1401 cpu_dai->card = card;
1403 /* set default power off timeout */
1404 rtd->pmdown_time = pmdown_time;
1406 /* probe the cpu_dai */
1407 if (!cpu_dai->probed &&
1408 cpu_dai->driver->probe_order == order) {
1409 if (!cpu_dai->codec) {
1410 cpu_dai->dapm.card = card;
1411 if (!try_module_get(cpu_dai->dev->driver->owner))
1414 list_add(&cpu_dai->dapm.list, &card->dapm_list);
1417 if (cpu_dai->driver->probe) {
1418 ret = cpu_dai->driver->probe(cpu_dai);
1420 dev_err(cpu_dai->dev,
1421 "ASoC: failed to probe CPU DAI %s: %d\n",
1422 cpu_dai->name, ret);
1423 module_put(cpu_dai->dev->driver->owner);
1427 cpu_dai->probed = 1;
1428 /* mark cpu_dai as probed and add to card dai list */
1429 list_add(&cpu_dai->card_list, &card->dai_dev_list);
1432 /* probe the CODEC DAI */
1433 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
1434 if (codec_dai->driver->probe) {
1435 ret = codec_dai->driver->probe(codec_dai);
1437 dev_err(codec_dai->dev,
1438 "ASoC: failed to probe CODEC DAI %s: %d\n",
1439 codec_dai->name, ret);
1444 /* mark codec_dai as probed and add to card dai list */
1445 codec_dai->probed = 1;
1446 list_add(&codec_dai->card_list, &card->dai_dev_list);
1449 /* complete DAI probe during last probe */
1450 if (order != SND_SOC_COMP_ORDER_LAST)
1453 ret = soc_post_component_init(card, codec, num, 0);
1457 ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
1459 dev_warn(rtd->dev, "ASoC: failed to add pmdown_time sysfs: %d\n",
1462 if (cpu_dai->driver->compress_dai) {
1463 /*create compress_device"*/
1464 ret = soc_new_compress(rtd, num);
1466 dev_err(card->dev, "ASoC: can't create compress %s\n",
1467 dai_link->stream_name);
1472 if (!dai_link->params) {
1473 /* create the pcm */
1474 ret = soc_new_pcm(rtd, num);
1476 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1477 dai_link->stream_name, ret);
1481 INIT_DELAYED_WORK(&rtd->delayed_work,
1482 codec2codec_close_delayed_work);
1484 /* link the DAI widgets */
1485 play_w = codec_dai->playback_widget;
1486 capture_w = cpu_dai->capture_widget;
1487 if (play_w && capture_w) {
1488 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1491 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1492 play_w->name, capture_w->name, ret);
1497 play_w = cpu_dai->playback_widget;
1498 capture_w = codec_dai->capture_widget;
1499 if (play_w && capture_w) {
1500 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1503 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1504 play_w->name, capture_w->name, ret);
1511 /* add platform data for AC97 devices */
1512 if (rtd->codec_dai->driver->ac97_control)
1513 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1518 #ifdef CONFIG_SND_SOC_AC97_BUS
1519 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1523 /* Only instantiate AC97 if not already done by the adaptor
1524 * for the generic AC97 subsystem.
1526 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
1528 * It is possible that the AC97 device is already registered to
1529 * the device subsystem. This happens when the device is created
1530 * via snd_ac97_mixer(). Currently only SoC codec that does so
1531 * is the generic AC97 glue but others migh emerge.
1533 * In those cases we don't try to register the device again.
1535 if (!rtd->codec->ac97_created)
1538 ret = soc_ac97_dev_register(rtd->codec);
1540 dev_err(rtd->codec->dev,
1541 "ASoC: AC97 device register failed: %d\n", ret);
1545 rtd->codec->ac97_registered = 1;
1550 static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1552 if (codec->ac97_registered) {
1553 soc_ac97_dev_unregister(codec);
1554 codec->ac97_registered = 0;
1559 static int soc_check_aux_dev(struct snd_soc_card *card, int num)
1561 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1562 struct snd_soc_codec *codec;
1564 /* find CODEC from registered CODECs*/
1565 list_for_each_entry(codec, &codec_list, list) {
1566 if (!strcmp(codec->name, aux_dev->codec_name))
1570 dev_err(card->dev, "ASoC: %s not registered\n", aux_dev->codec_name);
1572 return -EPROBE_DEFER;
1575 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1577 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1578 struct snd_soc_codec *codec;
1581 /* find CODEC from registered CODECs*/
1582 list_for_each_entry(codec, &codec_list, list) {
1583 if (!strcmp(codec->name, aux_dev->codec_name)) {
1584 if (codec->probed) {
1586 "ASoC: codec already probed");
1593 /* codec not found */
1594 dev_err(card->dev, "ASoC: codec %s not found", aux_dev->codec_name);
1595 return -EPROBE_DEFER;
1598 ret = soc_probe_codec(card, codec);
1602 ret = soc_post_component_init(card, codec, num, 1);
1608 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1610 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1611 struct snd_soc_codec *codec = rtd->codec;
1613 /* unregister the rtd device */
1614 if (rtd->dev_registered) {
1615 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1616 device_unregister(rtd->dev);
1617 rtd->dev_registered = 0;
1620 if (codec && codec->probed)
1621 soc_remove_codec(codec);
1624 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec)
1628 if (codec->cache_init)
1631 ret = snd_soc_cache_init(codec);
1634 "ASoC: Failed to set cache compression type: %d\n",
1638 codec->cache_init = 1;
1642 static int snd_soc_instantiate_card(struct snd_soc_card *card)
1644 struct snd_soc_codec *codec;
1645 struct snd_soc_dai_link *dai_link;
1646 int ret, i, order, dai_fmt;
1648 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1651 for (i = 0; i < card->num_links; i++) {
1652 ret = soc_bind_dai_link(card, i);
1657 /* check aux_devs too */
1658 for (i = 0; i < card->num_aux_devs; i++) {
1659 ret = soc_check_aux_dev(card, i);
1664 /* initialize the register cache for each available codec */
1665 list_for_each_entry(codec, &codec_list, list) {
1666 if (codec->cache_init)
1668 ret = snd_soc_init_codec_cache(codec);
1673 /* card bind complete so register a sound card */
1674 ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1675 card->owner, 0, &card->snd_card);
1678 "ASoC: can't create sound card for card %s: %d\n",
1683 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1684 card->dapm.dev = card->dev;
1685 card->dapm.card = card;
1686 list_add(&card->dapm.list, &card->dapm_list);
1688 #ifdef CONFIG_DEBUG_FS
1689 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1692 #ifdef CONFIG_PM_SLEEP
1693 /* deferred resume work */
1694 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1697 if (card->dapm_widgets)
1698 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1699 card->num_dapm_widgets);
1701 /* initialise the sound card only once */
1703 ret = card->probe(card);
1705 goto card_probe_error;
1708 /* probe all components used by DAI links on this card */
1709 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1711 for (i = 0; i < card->num_links; i++) {
1712 ret = soc_probe_link_components(card, i, order);
1715 "ASoC: failed to instantiate card %d\n",
1722 /* probe all DAI links on this card */
1723 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1725 for (i = 0; i < card->num_links; i++) {
1726 ret = soc_probe_link_dais(card, i, order);
1729 "ASoC: failed to instantiate card %d\n",
1736 for (i = 0; i < card->num_aux_devs; i++) {
1737 ret = soc_probe_aux_dev(card, i);
1740 "ASoC: failed to add auxiliary devices %d\n",
1742 goto probe_aux_dev_err;
1746 snd_soc_dapm_link_dai_widgets(card);
1747 snd_soc_dapm_connect_dai_link_widgets(card);
1750 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1752 if (card->dapm_routes)
1753 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1754 card->num_dapm_routes);
1756 for (i = 0; i < card->num_links; i++) {
1757 dai_link = &card->dai_link[i];
1758 dai_fmt = dai_link->dai_fmt;
1761 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1763 if (ret != 0 && ret != -ENOTSUPP)
1764 dev_warn(card->rtd[i].codec_dai->dev,
1765 "ASoC: Failed to set DAI format: %d\n",
1769 /* If this is a regular CPU link there will be a platform */
1771 (dai_link->platform_name || dai_link->platform_of_node)) {
1772 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1774 if (ret != 0 && ret != -ENOTSUPP)
1775 dev_warn(card->rtd[i].cpu_dai->dev,
1776 "ASoC: Failed to set DAI format: %d\n",
1778 } else if (dai_fmt) {
1779 /* Flip the polarity for the "CPU" end */
1780 dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
1781 switch (dai_link->dai_fmt &
1782 SND_SOC_DAIFMT_MASTER_MASK) {
1783 case SND_SOC_DAIFMT_CBM_CFM:
1784 dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1786 case SND_SOC_DAIFMT_CBM_CFS:
1787 dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1789 case SND_SOC_DAIFMT_CBS_CFM:
1790 dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1792 case SND_SOC_DAIFMT_CBS_CFS:
1793 dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1797 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1799 if (ret != 0 && ret != -ENOTSUPP)
1800 dev_warn(card->rtd[i].cpu_dai->dev,
1801 "ASoC: Failed to set DAI format: %d\n",
1806 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1808 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1809 "%s", card->long_name ? card->long_name : card->name);
1810 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1811 "%s", card->driver_name ? card->driver_name : card->name);
1812 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1813 switch (card->snd_card->driver[i]) {
1819 if (!isalnum(card->snd_card->driver[i]))
1820 card->snd_card->driver[i] = '_';
1825 if (card->late_probe) {
1826 ret = card->late_probe(card);
1828 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
1830 goto probe_aux_dev_err;
1834 if (card->fully_routed)
1835 list_for_each_entry(codec, &card->codec_dev_list, card_list)
1836 snd_soc_dapm_auto_nc_codec_pins(codec);
1838 snd_soc_dapm_new_widgets(card);
1840 ret = snd_card_register(card->snd_card);
1842 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
1844 goto probe_aux_dev_err;
1847 #ifdef CONFIG_SND_SOC_AC97_BUS
1848 /* register any AC97 codecs */
1849 for (i = 0; i < card->num_rtd; i++) {
1850 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1853 "ASoC: failed to register AC97: %d\n", ret);
1855 soc_unregister_ac97_dai_link(card->rtd[i].codec);
1856 goto probe_aux_dev_err;
1861 card->instantiated = 1;
1862 snd_soc_dapm_sync(&card->dapm);
1863 mutex_unlock(&card->mutex);
1868 for (i = 0; i < card->num_aux_devs; i++)
1869 soc_remove_aux_dev(card, i);
1872 soc_remove_dai_links(card);
1878 snd_card_free(card->snd_card);
1881 mutex_unlock(&card->mutex);
1886 /* probes a new socdev */
1887 static int soc_probe(struct platform_device *pdev)
1889 struct snd_soc_card *card = platform_get_drvdata(pdev);
1892 * no card, so machine driver should be registering card
1893 * we should not be here in that case so ret error
1898 dev_warn(&pdev->dev,
1899 "ASoC: machine %s should use snd_soc_register_card()\n",
1902 /* Bodge while we unpick instantiation */
1903 card->dev = &pdev->dev;
1905 return snd_soc_register_card(card);
1908 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1912 /* make sure any delayed work runs */
1913 for (i = 0; i < card->num_rtd; i++) {
1914 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1915 flush_delayed_work(&rtd->delayed_work);
1918 /* remove auxiliary devices */
1919 for (i = 0; i < card->num_aux_devs; i++)
1920 soc_remove_aux_dev(card, i);
1922 /* remove and free each DAI */
1923 soc_remove_dai_links(card);
1925 soc_cleanup_card_debugfs(card);
1927 /* remove the card */
1931 snd_soc_dapm_free(&card->dapm);
1933 snd_card_free(card->snd_card);
1938 /* removes a socdev */
1939 static int soc_remove(struct platform_device *pdev)
1941 struct snd_soc_card *card = platform_get_drvdata(pdev);
1943 snd_soc_unregister_card(card);
1947 int snd_soc_poweroff(struct device *dev)
1949 struct snd_soc_card *card = dev_get_drvdata(dev);
1952 if (!card->instantiated)
1955 /* Flush out pmdown_time work - we actually do want to run it
1956 * now, we're shutting down so no imminent restart. */
1957 for (i = 0; i < card->num_rtd; i++) {
1958 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1959 flush_delayed_work(&rtd->delayed_work);
1962 snd_soc_dapm_shutdown(card);
1964 /* deactivate pins to sleep state */
1965 for (i = 0; i < card->num_rtd; i++) {
1966 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1967 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
1968 pinctrl_pm_select_sleep_state(codec_dai->dev);
1969 pinctrl_pm_select_sleep_state(cpu_dai->dev);
1974 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
1976 const struct dev_pm_ops snd_soc_pm_ops = {
1977 .suspend = snd_soc_suspend,
1978 .resume = snd_soc_resume,
1979 .freeze = snd_soc_suspend,
1980 .thaw = snd_soc_resume,
1981 .poweroff = snd_soc_poweroff,
1982 .restore = snd_soc_resume,
1984 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
1986 /* ASoC platform driver */
1987 static struct platform_driver soc_driver = {
1989 .name = "soc-audio",
1990 .owner = THIS_MODULE,
1991 .pm = &snd_soc_pm_ops,
1994 .remove = soc_remove,
1998 * snd_soc_codec_volatile_register: Report if a register is volatile.
2000 * @codec: CODEC to query.
2001 * @reg: Register to query.
2003 * Boolean function indiciating if a CODEC register is volatile.
2005 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
2008 if (codec->volatile_register)
2009 return codec->volatile_register(codec, reg);
2013 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
2016 * snd_soc_codec_readable_register: Report if a register is readable.
2018 * @codec: CODEC to query.
2019 * @reg: Register to query.
2021 * Boolean function indicating if a CODEC register is readable.
2023 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
2026 if (codec->readable_register)
2027 return codec->readable_register(codec, reg);
2031 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
2034 * snd_soc_codec_writable_register: Report if a register is writable.
2036 * @codec: CODEC to query.
2037 * @reg: Register to query.
2039 * Boolean function indicating if a CODEC register is writable.
2041 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
2044 if (codec->writable_register)
2045 return codec->writable_register(codec, reg);
2049 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
2051 int snd_soc_platform_read(struct snd_soc_platform *platform,
2056 if (!platform->driver->read) {
2057 dev_err(platform->dev, "ASoC: platform has no read back\n");
2061 ret = platform->driver->read(platform, reg);
2062 dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
2063 trace_snd_soc_preg_read(platform, reg, ret);
2067 EXPORT_SYMBOL_GPL(snd_soc_platform_read);
2069 int snd_soc_platform_write(struct snd_soc_platform *platform,
2070 unsigned int reg, unsigned int val)
2072 if (!platform->driver->write) {
2073 dev_err(platform->dev, "ASoC: platform has no write back\n");
2077 dev_dbg(platform->dev, "write %x = %x\n", reg, val);
2078 trace_snd_soc_preg_write(platform, reg, val);
2079 return platform->driver->write(platform, reg, val);
2081 EXPORT_SYMBOL_GPL(snd_soc_platform_write);
2084 * snd_soc_new_ac97_codec - initailise AC97 device
2085 * @codec: audio codec
2086 * @ops: AC97 bus operations
2087 * @num: AC97 codec number
2089 * Initialises AC97 codec resources for use by ad-hoc devices only.
2091 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
2092 struct snd_ac97_bus_ops *ops, int num)
2094 mutex_lock(&codec->mutex);
2096 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2097 if (codec->ac97 == NULL) {
2098 mutex_unlock(&codec->mutex);
2102 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
2103 if (codec->ac97->bus == NULL) {
2106 mutex_unlock(&codec->mutex);
2110 codec->ac97->bus->ops = ops;
2111 codec->ac97->num = num;
2114 * Mark the AC97 device to be created by us. This way we ensure that the
2115 * device will be registered with the device subsystem later on.
2117 codec->ac97_created = 1;
2119 mutex_unlock(&codec->mutex);
2122 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
2124 static struct snd_ac97_reset_cfg snd_ac97_rst_cfg;
2126 static void snd_soc_ac97_warm_reset(struct snd_ac97 *ac97)
2128 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2130 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_warm_reset);
2132 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 1);
2136 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2138 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2142 static void snd_soc_ac97_reset(struct snd_ac97 *ac97)
2144 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2146 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_reset);
2148 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2149 gpio_direction_output(snd_ac97_rst_cfg.gpio_sdata, 0);
2150 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 0);
2154 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 1);
2156 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2160 static int snd_soc_ac97_parse_pinctl(struct device *dev,
2161 struct snd_ac97_reset_cfg *cfg)
2164 struct pinctrl_state *state;
2168 p = devm_pinctrl_get(dev);
2170 dev_err(dev, "Failed to get pinctrl\n");
2175 state = pinctrl_lookup_state(p, "ac97-reset");
2176 if (IS_ERR(state)) {
2177 dev_err(dev, "Can't find pinctrl state ac97-reset\n");
2178 return PTR_RET(state);
2180 cfg->pstate_reset = state;
2182 state = pinctrl_lookup_state(p, "ac97-warm-reset");
2183 if (IS_ERR(state)) {
2184 dev_err(dev, "Can't find pinctrl state ac97-warm-reset\n");
2185 return PTR_RET(state);
2187 cfg->pstate_warm_reset = state;
2189 state = pinctrl_lookup_state(p, "ac97-running");
2190 if (IS_ERR(state)) {
2191 dev_err(dev, "Can't find pinctrl state ac97-running\n");
2192 return PTR_RET(state);
2194 cfg->pstate_run = state;
2196 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 0);
2198 dev_err(dev, "Can't find ac97-sync gpio\n");
2201 ret = devm_gpio_request(dev, gpio, "AC97 link sync");
2203 dev_err(dev, "Failed requesting ac97-sync gpio\n");
2206 cfg->gpio_sync = gpio;
2208 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 1);
2210 dev_err(dev, "Can't find ac97-sdata gpio %d\n", gpio);
2213 ret = devm_gpio_request(dev, gpio, "AC97 link sdata");
2215 dev_err(dev, "Failed requesting ac97-sdata gpio\n");
2218 cfg->gpio_sdata = gpio;
2220 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 2);
2222 dev_err(dev, "Can't find ac97-reset gpio\n");
2225 ret = devm_gpio_request(dev, gpio, "AC97 link reset");
2227 dev_err(dev, "Failed requesting ac97-reset gpio\n");
2230 cfg->gpio_reset = gpio;
2235 struct snd_ac97_bus_ops *soc_ac97_ops;
2236 EXPORT_SYMBOL_GPL(soc_ac97_ops);
2238 int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops)
2240 if (ops == soc_ac97_ops)
2243 if (soc_ac97_ops && ops)
2250 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops);
2253 * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions
2255 * This function sets the reset and warm_reset properties of ops and parses
2256 * the device node of pdev to get pinctrl states and gpio numbers to use.
2258 int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops,
2259 struct platform_device *pdev)
2261 struct device *dev = &pdev->dev;
2262 struct snd_ac97_reset_cfg cfg;
2265 ret = snd_soc_ac97_parse_pinctl(dev, &cfg);
2269 ret = snd_soc_set_ac97_ops(ops);
2273 ops->warm_reset = snd_soc_ac97_warm_reset;
2274 ops->reset = snd_soc_ac97_reset;
2276 snd_ac97_rst_cfg = cfg;
2279 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset);
2282 * snd_soc_free_ac97_codec - free AC97 codec device
2283 * @codec: audio codec
2285 * Frees AC97 codec device resources.
2287 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
2289 mutex_lock(&codec->mutex);
2290 #ifdef CONFIG_SND_SOC_AC97_BUS
2291 soc_unregister_ac97_dai_link(codec);
2293 kfree(codec->ac97->bus);
2296 codec->ac97_created = 0;
2297 mutex_unlock(&codec->mutex);
2299 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
2301 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
2305 ret = codec->read(codec, reg);
2306 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
2307 trace_snd_soc_reg_read(codec, reg, ret);
2311 EXPORT_SYMBOL_GPL(snd_soc_read);
2313 unsigned int snd_soc_write(struct snd_soc_codec *codec,
2314 unsigned int reg, unsigned int val)
2316 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
2317 trace_snd_soc_reg_write(codec, reg, val);
2318 return codec->write(codec, reg, val);
2320 EXPORT_SYMBOL_GPL(snd_soc_write);
2323 * snd_soc_update_bits - update codec register bits
2324 * @codec: audio codec
2325 * @reg: codec register
2326 * @mask: register mask
2329 * Writes new register value.
2331 * Returns 1 for change, 0 for no change, or negative error code.
2333 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned int reg,
2334 unsigned int mask, unsigned int value)
2337 unsigned int old, new;
2340 if (codec->using_regmap) {
2341 ret = regmap_update_bits_check(codec->control_data, reg,
2342 mask, value, &change);
2344 ret = snd_soc_read(codec, reg);
2349 new = (old & ~mask) | (value & mask);
2350 change = old != new;
2352 ret = snd_soc_write(codec, reg, new);
2360 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
2363 * snd_soc_update_bits_locked - update codec register bits
2364 * @codec: audio codec
2365 * @reg: codec register
2366 * @mask: register mask
2369 * Writes new register value, and takes the codec mutex.
2371 * Returns 1 for change else 0.
2373 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
2374 unsigned int reg, unsigned int mask,
2379 mutex_lock(&codec->mutex);
2380 change = snd_soc_update_bits(codec, reg, mask, value);
2381 mutex_unlock(&codec->mutex);
2385 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
2388 * snd_soc_test_bits - test register for change
2389 * @codec: audio codec
2390 * @reg: codec register
2391 * @mask: register mask
2394 * Tests a register with a new value and checks if the new value is
2395 * different from the old value.
2397 * Returns 1 for change else 0.
2399 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned int reg,
2400 unsigned int mask, unsigned int value)
2403 unsigned int old, new;
2405 old = snd_soc_read(codec, reg);
2406 new = (old & ~mask) | value;
2407 change = old != new;
2411 EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2414 * snd_soc_cnew - create new control
2415 * @_template: control template
2416 * @data: control private data
2417 * @long_name: control long name
2418 * @prefix: control name prefix
2420 * Create a new mixer control from a template control.
2422 * Returns 0 for success, else error.
2424 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2425 void *data, const char *long_name,
2428 struct snd_kcontrol_new template;
2429 struct snd_kcontrol *kcontrol;
2432 memcpy(&template, _template, sizeof(template));
2436 long_name = template.name;
2439 name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
2443 template.name = name;
2445 template.name = long_name;
2448 kcontrol = snd_ctl_new1(&template, data);
2454 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2456 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2457 const struct snd_kcontrol_new *controls, int num_controls,
2458 const char *prefix, void *data)
2462 for (i = 0; i < num_controls; i++) {
2463 const struct snd_kcontrol_new *control = &controls[i];
2464 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2465 control->name, prefix));
2467 dev_err(dev, "ASoC: Failed to add %s: %d\n",
2468 control->name, err);
2476 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
2479 struct snd_card *card = soc_card->snd_card;
2480 struct snd_kcontrol *kctl;
2482 if (unlikely(!name))
2485 list_for_each_entry(kctl, &card->controls, list)
2486 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
2490 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
2493 * snd_soc_add_codec_controls - add an array of controls to a codec.
2494 * Convenience function to add a list of controls. Many codecs were
2495 * duplicating this code.
2497 * @codec: codec to add controls to
2498 * @controls: array of controls to add
2499 * @num_controls: number of elements in the array
2501 * Return 0 for success, else error.
2503 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2504 const struct snd_kcontrol_new *controls, int num_controls)
2506 struct snd_card *card = codec->card->snd_card;
2508 return snd_soc_add_controls(card, codec->dev, controls, num_controls,
2509 codec->name_prefix, codec);
2511 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2514 * snd_soc_add_platform_controls - add an array of controls to a platform.
2515 * Convenience function to add a list of controls.
2517 * @platform: platform to add controls to
2518 * @controls: array of controls to add
2519 * @num_controls: number of elements in the array
2521 * Return 0 for success, else error.
2523 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2524 const struct snd_kcontrol_new *controls, int num_controls)
2526 struct snd_card *card = platform->card->snd_card;
2528 return snd_soc_add_controls(card, platform->dev, controls, num_controls,
2531 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2534 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2535 * Convenience function to add a list of controls.
2537 * @soc_card: SoC card to add controls to
2538 * @controls: array of controls to add
2539 * @num_controls: number of elements in the array
2541 * Return 0 for success, else error.
2543 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2544 const struct snd_kcontrol_new *controls, int num_controls)
2546 struct snd_card *card = soc_card->snd_card;
2548 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2551 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2554 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2555 * Convienience function to add a list of controls.
2557 * @dai: DAI to add controls to
2558 * @controls: array of controls to add
2559 * @num_controls: number of elements in the array
2561 * Return 0 for success, else error.
2563 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2564 const struct snd_kcontrol_new *controls, int num_controls)
2566 struct snd_card *card = dai->card->snd_card;
2568 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2571 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2574 * snd_soc_info_enum_double - enumerated double mixer info callback
2575 * @kcontrol: mixer control
2576 * @uinfo: control element information
2578 * Callback to provide information about a double enumerated
2581 * Returns 0 for success.
2583 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2584 struct snd_ctl_elem_info *uinfo)
2586 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2588 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2589 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2590 uinfo->value.enumerated.items = e->items;
2592 if (uinfo->value.enumerated.item >= e->items)
2593 uinfo->value.enumerated.item = e->items - 1;
2594 strlcpy(uinfo->value.enumerated.name,
2595 e->texts[uinfo->value.enumerated.item],
2596 sizeof(uinfo->value.enumerated.name));
2599 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2602 * snd_soc_get_enum_double - enumerated double mixer get callback
2603 * @kcontrol: mixer control
2604 * @ucontrol: control element information
2606 * Callback to get the value of a double enumerated mixer.
2608 * Returns 0 for success.
2610 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2611 struct snd_ctl_elem_value *ucontrol)
2613 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2614 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2615 unsigned int val, item;
2616 unsigned int reg_val;
2618 reg_val = snd_soc_read(codec, e->reg);
2619 val = (reg_val >> e->shift_l) & e->mask;
2620 item = snd_soc_enum_val_to_item(e, val);
2621 ucontrol->value.enumerated.item[0] = item;
2622 if (e->shift_l != e->shift_r) {
2623 val = (reg_val >> e->shift_l) & e->mask;
2624 item = snd_soc_enum_val_to_item(e, val);
2625 ucontrol->value.enumerated.item[1] = item;
2630 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2633 * snd_soc_put_enum_double - enumerated double mixer put callback
2634 * @kcontrol: mixer control
2635 * @ucontrol: control element information
2637 * Callback to set the value of a double enumerated mixer.
2639 * Returns 0 for success.
2641 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2642 struct snd_ctl_elem_value *ucontrol)
2644 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2645 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2646 unsigned int *item = ucontrol->value.enumerated.item;
2650 if (item[0] >= e->items)
2652 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
2653 mask = e->mask << e->shift_l;
2654 if (e->shift_l != e->shift_r) {
2655 if (item[1] >= e->items)
2657 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
2658 mask |= e->mask << e->shift_r;
2661 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2663 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2666 * snd_soc_read_signed - Read a codec register and interprete as signed value
2668 * @reg: Register to read
2669 * @mask: Mask to use after shifting the register value
2670 * @shift: Right shift of register value
2671 * @sign_bit: Bit that describes if a number is negative or not.
2673 * This functions reads a codec register. The register value is shifted right
2674 * by 'shift' bits and masked with the given 'mask'. Afterwards it translates
2675 * the given registervalue into a signed integer if sign_bit is non-zero.
2677 * Returns the register value as signed int.
2679 static int snd_soc_read_signed(struct snd_soc_codec *codec, unsigned int reg,
2680 unsigned int mask, unsigned int shift, unsigned int sign_bit)
2685 val = (snd_soc_read(codec, reg) >> shift) & mask;
2690 /* non-negative number */
2691 if (!(val & BIT(sign_bit)))
2697 * The register most probably does not contain a full-sized int.
2698 * Instead we have an arbitrary number of bits in a signed
2699 * representation which has to be translated into a full-sized int.
2700 * This is done by filling up all bits above the sign-bit.
2702 ret |= ~((int)(BIT(sign_bit) - 1));
2708 * snd_soc_info_volsw - single mixer info callback
2709 * @kcontrol: mixer control
2710 * @uinfo: control element information
2712 * Callback to provide information about a single mixer control, or a double
2713 * mixer control that spans 2 registers.
2715 * Returns 0 for success.
2717 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2718 struct snd_ctl_elem_info *uinfo)
2720 struct soc_mixer_control *mc =
2721 (struct soc_mixer_control *)kcontrol->private_value;
2724 if (!mc->platform_max)
2725 mc->platform_max = mc->max;
2726 platform_max = mc->platform_max;
2728 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2729 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2731 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2733 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2734 uinfo->value.integer.min = 0;
2735 uinfo->value.integer.max = platform_max - mc->min;
2738 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2741 * snd_soc_get_volsw - single mixer get callback
2742 * @kcontrol: mixer control
2743 * @ucontrol: control element information
2745 * Callback to get the value of a single mixer control, or a double mixer
2746 * control that spans 2 registers.
2748 * Returns 0 for success.
2750 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2751 struct snd_ctl_elem_value *ucontrol)
2753 struct soc_mixer_control *mc =
2754 (struct soc_mixer_control *)kcontrol->private_value;
2755 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2756 unsigned int reg = mc->reg;
2757 unsigned int reg2 = mc->rreg;
2758 unsigned int shift = mc->shift;
2759 unsigned int rshift = mc->rshift;
2762 int sign_bit = mc->sign_bit;
2763 unsigned int mask = (1 << fls(max)) - 1;
2764 unsigned int invert = mc->invert;
2767 mask = BIT(sign_bit + 1) - 1;
2769 ucontrol->value.integer.value[0] = snd_soc_read_signed(codec, reg, mask,
2770 shift, sign_bit) - min;
2772 ucontrol->value.integer.value[0] =
2773 max - ucontrol->value.integer.value[0];
2775 if (snd_soc_volsw_is_stereo(mc)) {
2777 ucontrol->value.integer.value[1] =
2778 snd_soc_read_signed(codec, reg, mask, rshift,
2781 ucontrol->value.integer.value[1] =
2782 snd_soc_read_signed(codec, reg2, mask, shift,
2785 ucontrol->value.integer.value[1] =
2786 max - ucontrol->value.integer.value[1];
2791 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2794 * snd_soc_put_volsw - single mixer put callback
2795 * @kcontrol: mixer control
2796 * @ucontrol: control element information
2798 * Callback to set the value of a single mixer control, or a double mixer
2799 * control that spans 2 registers.
2801 * Returns 0 for success.
2803 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2804 struct snd_ctl_elem_value *ucontrol)
2806 struct soc_mixer_control *mc =
2807 (struct soc_mixer_control *)kcontrol->private_value;
2808 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2809 unsigned int reg = mc->reg;
2810 unsigned int reg2 = mc->rreg;
2811 unsigned int shift = mc->shift;
2812 unsigned int rshift = mc->rshift;
2815 unsigned int sign_bit = mc->sign_bit;
2816 unsigned int mask = (1 << fls(max)) - 1;
2817 unsigned int invert = mc->invert;
2819 bool type_2r = false;
2820 unsigned int val2 = 0;
2821 unsigned int val, val_mask;
2824 mask = BIT(sign_bit + 1) - 1;
2826 val = ((ucontrol->value.integer.value[0] + min) & mask);
2829 val_mask = mask << shift;
2831 if (snd_soc_volsw_is_stereo(mc)) {
2832 val2 = ((ucontrol->value.integer.value[1] + min) & mask);
2836 val_mask |= mask << rshift;
2837 val |= val2 << rshift;
2839 val2 = val2 << shift;
2843 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2848 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2852 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2855 * snd_soc_get_volsw_sx - single mixer get callback
2856 * @kcontrol: mixer control
2857 * @ucontrol: control element information
2859 * Callback to get the value of a single mixer control, or a double mixer
2860 * control that spans 2 registers.
2862 * Returns 0 for success.
2864 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
2865 struct snd_ctl_elem_value *ucontrol)
2867 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2868 struct soc_mixer_control *mc =
2869 (struct soc_mixer_control *)kcontrol->private_value;
2871 unsigned int reg = mc->reg;
2872 unsigned int reg2 = mc->rreg;
2873 unsigned int shift = mc->shift;
2874 unsigned int rshift = mc->rshift;
2877 int mask = (1 << (fls(min + max) - 1)) - 1;
2879 ucontrol->value.integer.value[0] =
2880 ((snd_soc_read(codec, reg) >> shift) - min) & mask;
2882 if (snd_soc_volsw_is_stereo(mc))
2883 ucontrol->value.integer.value[1] =
2884 ((snd_soc_read(codec, reg2) >> rshift) - min) & mask;
2888 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
2891 * snd_soc_put_volsw_sx - double mixer set callback
2892 * @kcontrol: mixer control
2893 * @uinfo: control element information
2895 * Callback to set the value of a double mixer control that spans 2 registers.
2897 * Returns 0 for success.
2899 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
2900 struct snd_ctl_elem_value *ucontrol)
2902 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2903 struct soc_mixer_control *mc =
2904 (struct soc_mixer_control *)kcontrol->private_value;
2906 unsigned int reg = mc->reg;
2907 unsigned int reg2 = mc->rreg;
2908 unsigned int shift = mc->shift;
2909 unsigned int rshift = mc->rshift;
2912 int mask = (1 << (fls(min + max) - 1)) - 1;
2914 unsigned int val, val_mask, val2 = 0;
2916 val_mask = mask << shift;
2917 val = (ucontrol->value.integer.value[0] + min) & mask;
2920 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2924 if (snd_soc_volsw_is_stereo(mc)) {
2925 val_mask = mask << rshift;
2926 val2 = (ucontrol->value.integer.value[1] + min) & mask;
2927 val2 = val2 << rshift;
2929 if (snd_soc_update_bits_locked(codec, reg2, val_mask, val2))
2934 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
2937 * snd_soc_info_volsw_s8 - signed mixer info callback
2938 * @kcontrol: mixer control
2939 * @uinfo: control element information
2941 * Callback to provide information about a signed mixer control.
2943 * Returns 0 for success.
2945 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2946 struct snd_ctl_elem_info *uinfo)
2948 struct soc_mixer_control *mc =
2949 (struct soc_mixer_control *)kcontrol->private_value;
2953 if (!mc->platform_max)
2954 mc->platform_max = mc->max;
2955 platform_max = mc->platform_max;
2957 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2959 uinfo->value.integer.min = 0;
2960 uinfo->value.integer.max = platform_max - min;
2963 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2966 * snd_soc_get_volsw_s8 - signed mixer get callback
2967 * @kcontrol: mixer control
2968 * @ucontrol: control element information
2970 * Callback to get the value of a signed mixer control.
2972 * Returns 0 for success.
2974 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2975 struct snd_ctl_elem_value *ucontrol)
2977 struct soc_mixer_control *mc =
2978 (struct soc_mixer_control *)kcontrol->private_value;
2979 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2980 unsigned int reg = mc->reg;
2982 int val = snd_soc_read(codec, reg);
2984 ucontrol->value.integer.value[0] =
2985 ((signed char)(val & 0xff))-min;
2986 ucontrol->value.integer.value[1] =
2987 ((signed char)((val >> 8) & 0xff))-min;
2990 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2993 * snd_soc_put_volsw_sgn - signed mixer put callback
2994 * @kcontrol: mixer control
2995 * @ucontrol: control element information
2997 * Callback to set the value of a signed mixer control.
2999 * Returns 0 for success.
3001 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
3002 struct snd_ctl_elem_value *ucontrol)
3004 struct soc_mixer_control *mc =
3005 (struct soc_mixer_control *)kcontrol->private_value;
3006 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3007 unsigned int reg = mc->reg;
3011 val = (ucontrol->value.integer.value[0]+min) & 0xff;
3012 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
3014 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
3016 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
3019 * snd_soc_info_volsw_range - single mixer info callback with range.
3020 * @kcontrol: mixer control
3021 * @uinfo: control element information
3023 * Callback to provide information, within a range, about a single
3026 * returns 0 for success.
3028 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
3029 struct snd_ctl_elem_info *uinfo)
3031 struct soc_mixer_control *mc =
3032 (struct soc_mixer_control *)kcontrol->private_value;
3036 if (!mc->platform_max)
3037 mc->platform_max = mc->max;
3038 platform_max = mc->platform_max;
3040 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3041 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
3042 uinfo->value.integer.min = 0;
3043 uinfo->value.integer.max = platform_max - min;
3047 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
3050 * snd_soc_put_volsw_range - single mixer put value callback with range.
3051 * @kcontrol: mixer control
3052 * @ucontrol: control element information
3054 * Callback to set the value, within a range, for a single mixer control.
3056 * Returns 0 for success.
3058 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
3059 struct snd_ctl_elem_value *ucontrol)
3061 struct soc_mixer_control *mc =
3062 (struct soc_mixer_control *)kcontrol->private_value;
3063 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3064 unsigned int reg = mc->reg;
3065 unsigned int rreg = mc->rreg;
3066 unsigned int shift = mc->shift;
3069 unsigned int mask = (1 << fls(max)) - 1;
3070 unsigned int invert = mc->invert;
3071 unsigned int val, val_mask;
3074 val = ((ucontrol->value.integer.value[0] + min) & mask);
3077 val_mask = mask << shift;
3080 ret = snd_soc_update_bits_locked(codec, reg, val_mask, val);
3084 if (snd_soc_volsw_is_stereo(mc)) {
3085 val = ((ucontrol->value.integer.value[1] + min) & mask);
3088 val_mask = mask << shift;
3091 ret = snd_soc_update_bits_locked(codec, rreg, val_mask, val);
3096 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
3099 * snd_soc_get_volsw_range - single mixer get callback with range
3100 * @kcontrol: mixer control
3101 * @ucontrol: control element information
3103 * Callback to get the value, within a range, of a single mixer control.
3105 * Returns 0 for success.
3107 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
3108 struct snd_ctl_elem_value *ucontrol)
3110 struct soc_mixer_control *mc =
3111 (struct soc_mixer_control *)kcontrol->private_value;
3112 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3113 unsigned int reg = mc->reg;
3114 unsigned int rreg = mc->rreg;
3115 unsigned int shift = mc->shift;
3118 unsigned int mask = (1 << fls(max)) - 1;
3119 unsigned int invert = mc->invert;
3121 ucontrol->value.integer.value[0] =
3122 (snd_soc_read(codec, reg) >> shift) & mask;
3124 ucontrol->value.integer.value[0] =
3125 max - ucontrol->value.integer.value[0];
3126 ucontrol->value.integer.value[0] =
3127 ucontrol->value.integer.value[0] - min;
3129 if (snd_soc_volsw_is_stereo(mc)) {
3130 ucontrol->value.integer.value[1] =
3131 (snd_soc_read(codec, rreg) >> shift) & mask;
3133 ucontrol->value.integer.value[1] =
3134 max - ucontrol->value.integer.value[1];
3135 ucontrol->value.integer.value[1] =
3136 ucontrol->value.integer.value[1] - min;
3141 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
3144 * snd_soc_limit_volume - Set new limit to an existing volume control.
3146 * @codec: where to look for the control
3147 * @name: Name of the control
3148 * @max: new maximum limit
3150 * Return 0 for success, else error.
3152 int snd_soc_limit_volume(struct snd_soc_codec *codec,
3153 const char *name, int max)
3155 struct snd_card *card = codec->card->snd_card;
3156 struct snd_kcontrol *kctl;
3157 struct soc_mixer_control *mc;
3161 /* Sanity check for name and max */
3162 if (unlikely(!name || max <= 0))
3165 list_for_each_entry(kctl, &card->controls, list) {
3166 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
3172 mc = (struct soc_mixer_control *)kctl->private_value;
3173 if (max <= mc->max) {
3174 mc->platform_max = max;
3180 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
3182 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
3183 struct snd_ctl_elem_info *uinfo)
3185 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3186 struct soc_bytes *params = (void *)kcontrol->private_value;
3188 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
3189 uinfo->count = params->num_regs * codec->val_bytes;
3193 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
3195 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
3196 struct snd_ctl_elem_value *ucontrol)
3198 struct soc_bytes *params = (void *)kcontrol->private_value;
3199 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3202 if (codec->using_regmap)
3203 ret = regmap_raw_read(codec->control_data, params->base,
3204 ucontrol->value.bytes.data,
3205 params->num_regs * codec->val_bytes);
3209 /* Hide any masked bytes to ensure consistent data reporting */
3210 if (ret == 0 && params->mask) {
3211 switch (codec->val_bytes) {
3213 ucontrol->value.bytes.data[0] &= ~params->mask;
3216 ((u16 *)(&ucontrol->value.bytes.data))[0]
3217 &= cpu_to_be16(~params->mask);
3220 ((u32 *)(&ucontrol->value.bytes.data))[0]
3221 &= cpu_to_be32(~params->mask);
3230 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
3232 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
3233 struct snd_ctl_elem_value *ucontrol)
3235 struct soc_bytes *params = (void *)kcontrol->private_value;
3236 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3238 unsigned int val, mask;
3241 if (!codec->using_regmap)
3244 len = params->num_regs * codec->val_bytes;
3246 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
3251 * If we've got a mask then we need to preserve the register
3252 * bits. We shouldn't modify the incoming data so take a
3256 ret = regmap_read(codec->control_data, params->base, &val);
3260 val &= params->mask;
3262 switch (codec->val_bytes) {
3264 ((u8 *)data)[0] &= ~params->mask;
3265 ((u8 *)data)[0] |= val;
3268 mask = ~params->mask;
3269 ret = regmap_parse_val(codec->control_data,
3274 ((u16 *)data)[0] &= mask;
3276 ret = regmap_parse_val(codec->control_data,
3281 ((u16 *)data)[0] |= val;
3284 mask = ~params->mask;
3285 ret = regmap_parse_val(codec->control_data,
3290 ((u32 *)data)[0] &= mask;
3292 ret = regmap_parse_val(codec->control_data,
3297 ((u32 *)data)[0] |= val;
3305 ret = regmap_raw_write(codec->control_data, params->base,
3313 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
3316 * snd_soc_info_xr_sx - signed multi register info callback
3317 * @kcontrol: mreg control
3318 * @uinfo: control element information
3320 * Callback to provide information of a control that can
3321 * span multiple codec registers which together
3322 * forms a single signed value in a MSB/LSB manner.
3324 * Returns 0 for success.
3326 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
3327 struct snd_ctl_elem_info *uinfo)
3329 struct soc_mreg_control *mc =
3330 (struct soc_mreg_control *)kcontrol->private_value;
3331 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3333 uinfo->value.integer.min = mc->min;
3334 uinfo->value.integer.max = mc->max;
3338 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
3341 * snd_soc_get_xr_sx - signed multi register get callback
3342 * @kcontrol: mreg control
3343 * @ucontrol: control element information
3345 * Callback to get the value of a control that can span
3346 * multiple codec registers which together forms a single
3347 * signed value in a MSB/LSB manner. The control supports
3348 * specifying total no of bits used to allow for bitfields
3349 * across the multiple codec registers.
3351 * Returns 0 for success.
3353 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
3354 struct snd_ctl_elem_value *ucontrol)
3356 struct soc_mreg_control *mc =
3357 (struct soc_mreg_control *)kcontrol->private_value;
3358 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3359 unsigned int regbase = mc->regbase;
3360 unsigned int regcount = mc->regcount;
3361 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3362 unsigned int regwmask = (1<<regwshift)-1;
3363 unsigned int invert = mc->invert;
3364 unsigned long mask = (1UL<<mc->nbits)-1;
3368 unsigned long regval;
3371 for (i = 0; i < regcount; i++) {
3372 regval = snd_soc_read(codec, regbase+i) & regwmask;
3373 val |= regval << (regwshift*(regcount-i-1));
3376 if (min < 0 && val > max)
3380 ucontrol->value.integer.value[0] = val;
3384 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
3387 * snd_soc_put_xr_sx - signed multi register get callback
3388 * @kcontrol: mreg control
3389 * @ucontrol: control element information
3391 * Callback to set the value of a control that can span
3392 * multiple codec registers which together forms a single
3393 * signed value in a MSB/LSB manner. The control supports
3394 * specifying total no of bits used to allow for bitfields
3395 * across the multiple codec registers.
3397 * Returns 0 for success.
3399 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
3400 struct snd_ctl_elem_value *ucontrol)
3402 struct soc_mreg_control *mc =
3403 (struct soc_mreg_control *)kcontrol->private_value;
3404 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3405 unsigned int regbase = mc->regbase;
3406 unsigned int regcount = mc->regcount;
3407 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3408 unsigned int regwmask = (1<<regwshift)-1;
3409 unsigned int invert = mc->invert;
3410 unsigned long mask = (1UL<<mc->nbits)-1;
3412 long val = ucontrol->value.integer.value[0];
3413 unsigned int i, regval, regmask;
3419 for (i = 0; i < regcount; i++) {
3420 regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
3421 regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
3422 err = snd_soc_update_bits_locked(codec, regbase+i,
3430 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
3433 * snd_soc_get_strobe - strobe get callback
3434 * @kcontrol: mixer control
3435 * @ucontrol: control element information
3437 * Callback get the value of a strobe mixer control.
3439 * Returns 0 for success.
3441 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
3442 struct snd_ctl_elem_value *ucontrol)
3444 struct soc_mixer_control *mc =
3445 (struct soc_mixer_control *)kcontrol->private_value;
3446 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3447 unsigned int reg = mc->reg;
3448 unsigned int shift = mc->shift;
3449 unsigned int mask = 1 << shift;
3450 unsigned int invert = mc->invert != 0;
3451 unsigned int val = snd_soc_read(codec, reg) & mask;
3453 if (shift != 0 && val != 0)
3455 ucontrol->value.enumerated.item[0] = val ^ invert;
3459 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
3462 * snd_soc_put_strobe - strobe put callback
3463 * @kcontrol: mixer control
3464 * @ucontrol: control element information
3466 * Callback strobe a register bit to high then low (or the inverse)
3467 * in one pass of a single mixer enum control.
3469 * Returns 1 for success.
3471 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
3472 struct snd_ctl_elem_value *ucontrol)
3474 struct soc_mixer_control *mc =
3475 (struct soc_mixer_control *)kcontrol->private_value;
3476 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3477 unsigned int reg = mc->reg;
3478 unsigned int shift = mc->shift;
3479 unsigned int mask = 1 << shift;
3480 unsigned int invert = mc->invert != 0;
3481 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
3482 unsigned int val1 = (strobe ^ invert) ? mask : 0;
3483 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
3486 err = snd_soc_update_bits_locked(codec, reg, mask, val1);
3490 err = snd_soc_update_bits_locked(codec, reg, mask, val2);
3493 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);
3496 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3498 * @clk_id: DAI specific clock ID
3499 * @freq: new clock frequency in Hz
3500 * @dir: new clock direction - input/output.
3502 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3504 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
3505 unsigned int freq, int dir)
3507 if (dai->driver && dai->driver->ops->set_sysclk)
3508 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
3509 else if (dai->codec && dai->codec->driver->set_sysclk)
3510 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
3515 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
3518 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3520 * @clk_id: DAI specific clock ID
3521 * @source: Source for the clock
3522 * @freq: new clock frequency in Hz
3523 * @dir: new clock direction - input/output.
3525 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3527 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
3528 int source, unsigned int freq, int dir)
3530 if (codec->driver->set_sysclk)
3531 return codec->driver->set_sysclk(codec, clk_id, source,
3536 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
3539 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3541 * @div_id: DAI specific clock divider ID
3542 * @div: new clock divisor.
3544 * Configures the clock dividers. This is used to derive the best DAI bit and
3545 * frame clocks from the system or master clock. It's best to set the DAI bit
3546 * and frame clocks as low as possible to save system power.
3548 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
3549 int div_id, int div)
3551 if (dai->driver && dai->driver->ops->set_clkdiv)
3552 return dai->driver->ops->set_clkdiv(dai, div_id, div);
3556 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
3559 * snd_soc_dai_set_pll - configure DAI PLL.
3561 * @pll_id: DAI specific PLL ID
3562 * @source: DAI specific source for the PLL
3563 * @freq_in: PLL input clock frequency in Hz
3564 * @freq_out: requested PLL output clock frequency in Hz
3566 * Configures and enables PLL to generate output clock based on input clock.
3568 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
3569 unsigned int freq_in, unsigned int freq_out)
3571 if (dai->driver && dai->driver->ops->set_pll)
3572 return dai->driver->ops->set_pll(dai, pll_id, source,
3574 else if (dai->codec && dai->codec->driver->set_pll)
3575 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
3580 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
3583 * snd_soc_codec_set_pll - configure codec PLL.
3585 * @pll_id: DAI specific PLL ID
3586 * @source: DAI specific source for the PLL
3587 * @freq_in: PLL input clock frequency in Hz
3588 * @freq_out: requested PLL output clock frequency in Hz
3590 * Configures and enables PLL to generate output clock based on input clock.
3592 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
3593 unsigned int freq_in, unsigned int freq_out)
3595 if (codec->driver->set_pll)
3596 return codec->driver->set_pll(codec, pll_id, source,
3601 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
3604 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
3606 * @ratio Ratio of BCLK to Sample rate.
3608 * Configures the DAI for a preset BCLK to sample rate ratio.
3610 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
3612 if (dai->driver && dai->driver->ops->set_bclk_ratio)
3613 return dai->driver->ops->set_bclk_ratio(dai, ratio);
3617 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);
3620 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3622 * @fmt: SND_SOC_DAIFMT_ format value.
3624 * Configures the DAI hardware format and clocking.
3626 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
3628 if (dai->driver == NULL)
3630 if (dai->driver->ops->set_fmt == NULL)
3632 return dai->driver->ops->set_fmt(dai, fmt);
3634 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
3637 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
3638 * @slots: Number of slots in use.
3639 * @tx_mask: bitmask representing active TX slots.
3640 * @rx_mask: bitmask representing active RX slots.
3642 * Generates the TDM tx and rx slot default masks for DAI.
3644 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
3645 unsigned int *tx_mask,
3646 unsigned int *rx_mask)
3648 if (*tx_mask || *rx_mask)
3654 *tx_mask = (1 << slots) - 1;
3655 *rx_mask = (1 << slots) - 1;
3661 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3663 * @tx_mask: bitmask representing active TX slots.
3664 * @rx_mask: bitmask representing active RX slots.
3665 * @slots: Number of slots in use.
3666 * @slot_width: Width in bits for each slot.
3668 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3671 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
3672 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3674 if (dai->driver && dai->driver->ops->xlate_tdm_slot_mask)
3675 dai->driver->ops->xlate_tdm_slot_mask(slots,
3676 &tx_mask, &rx_mask);
3678 snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
3680 if (dai->driver && dai->driver->ops->set_tdm_slot)
3681 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3686 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3689 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3691 * @tx_num: how many TX channels
3692 * @tx_slot: pointer to an array which imply the TX slot number channel
3694 * @rx_num: how many RX channels
3695 * @rx_slot: pointer to an array which imply the RX slot number channel
3698 * configure the relationship between channel number and TDM slot number.
3700 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3701 unsigned int tx_num, unsigned int *tx_slot,
3702 unsigned int rx_num, unsigned int *rx_slot)
3704 if (dai->driver && dai->driver->ops->set_channel_map)
3705 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3710 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3713 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3715 * @tristate: tristate enable
3717 * Tristates the DAI so that others can use it.
3719 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3721 if (dai->driver && dai->driver->ops->set_tristate)
3722 return dai->driver->ops->set_tristate(dai, tristate);
3726 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3729 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3731 * @mute: mute enable
3732 * @direction: stream to mute
3734 * Mutes the DAI DAC.
3736 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
3742 if (dai->driver->ops->mute_stream)
3743 return dai->driver->ops->mute_stream(dai, mute, direction);
3744 else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
3745 dai->driver->ops->digital_mute)
3746 return dai->driver->ops->digital_mute(dai, mute);
3750 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3753 * snd_soc_register_card - Register a card with the ASoC core
3755 * @card: Card to register
3758 int snd_soc_register_card(struct snd_soc_card *card)
3762 if (!card->name || !card->dev)
3765 for (i = 0; i < card->num_links; i++) {
3766 struct snd_soc_dai_link *link = &card->dai_link[i];
3769 * Codec must be specified by 1 of name or OF node,
3770 * not both or neither.
3772 if (!!link->codec_name == !!link->codec_of_node) {
3774 "ASoC: Neither/both codec name/of_node are set for %s\n",
3778 /* Codec DAI name must be specified */
3779 if (!link->codec_dai_name) {
3781 "ASoC: codec_dai_name not set for %s\n",
3787 * Platform may be specified by either name or OF node, but
3788 * can be left unspecified, and a dummy platform will be used.
3790 if (link->platform_name && link->platform_of_node) {
3792 "ASoC: Both platform name/of_node are set for %s\n",
3798 * CPU device may be specified by either name or OF node, but
3799 * can be left unspecified, and will be matched based on DAI
3802 if (link->cpu_name && link->cpu_of_node) {
3804 "ASoC: Neither/both cpu name/of_node are set for %s\n",
3809 * At least one of CPU DAI name or CPU device name/node must be
3812 if (!link->cpu_dai_name &&
3813 !(link->cpu_name || link->cpu_of_node)) {
3815 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
3821 dev_set_drvdata(card->dev, card);
3823 snd_soc_initialize_card_lists(card);
3825 soc_init_card_debugfs(card);
3827 card->rtd = devm_kzalloc(card->dev,
3828 sizeof(struct snd_soc_pcm_runtime) *
3829 (card->num_links + card->num_aux_devs),
3831 if (card->rtd == NULL)
3834 card->rtd_aux = &card->rtd[card->num_links];
3836 for (i = 0; i < card->num_links; i++)
3837 card->rtd[i].dai_link = &card->dai_link[i];
3839 INIT_LIST_HEAD(&card->list);
3840 INIT_LIST_HEAD(&card->dapm_dirty);
3841 card->instantiated = 0;
3842 mutex_init(&card->mutex);
3843 mutex_init(&card->dapm_mutex);
3845 ret = snd_soc_instantiate_card(card);
3847 soc_cleanup_card_debugfs(card);
3849 /* deactivate pins to sleep state */
3850 for (i = 0; i < card->num_rtd; i++) {
3851 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
3852 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
3853 if (!codec_dai->active)
3854 pinctrl_pm_select_sleep_state(codec_dai->dev);
3855 if (!cpu_dai->active)
3856 pinctrl_pm_select_sleep_state(cpu_dai->dev);
3861 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3864 * snd_soc_unregister_card - Unregister a card with the ASoC core
3866 * @card: Card to unregister
3869 int snd_soc_unregister_card(struct snd_soc_card *card)
3871 if (card->instantiated)
3872 soc_cleanup_card_resources(card);
3873 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
3877 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3880 * Simplify DAI link configuration by removing ".-1" from device names
3881 * and sanitizing names.
3883 static char *fmt_single_name(struct device *dev, int *id)
3885 char *found, name[NAME_SIZE];
3888 if (dev_name(dev) == NULL)
3891 strlcpy(name, dev_name(dev), NAME_SIZE);
3893 /* are we a "%s.%d" name (platform and SPI components) */
3894 found = strstr(name, dev->driver->name);
3897 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3899 /* discard ID from name if ID == -1 */
3901 found[strlen(dev->driver->name)] = '\0';
3905 /* I2C component devices are named "bus-addr" */
3906 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3907 char tmp[NAME_SIZE];
3909 /* create unique ID number from I2C addr and bus */
3910 *id = ((id1 & 0xffff) << 16) + id2;
3912 /* sanitize component name for DAI link creation */
3913 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3914 strlcpy(name, tmp, NAME_SIZE);
3919 return kstrdup(name, GFP_KERNEL);
3923 * Simplify DAI link naming for single devices with multiple DAIs by removing
3924 * any ".-1" and using the DAI name (instead of device name).
3926 static inline char *fmt_multiple_name(struct device *dev,
3927 struct snd_soc_dai_driver *dai_drv)
3929 if (dai_drv->name == NULL) {
3931 "ASoC: error - multiple DAI %s registered with no name\n",
3936 return kstrdup(dai_drv->name, GFP_KERNEL);
3940 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
3942 * @component: The component for which the DAIs should be unregistered
3944 static void snd_soc_unregister_dais(struct snd_soc_component *component)
3946 struct snd_soc_dai *dai, *_dai;
3948 list_for_each_entry_safe(dai, _dai, &component->dai_list, list) {
3949 dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
3951 list_del(&dai->list);
3958 * snd_soc_register_dais - Register a DAI with the ASoC core
3960 * @component: The component the DAIs are registered for
3961 * @codec: The CODEC that the DAIs are registered for, NULL if the component is
3963 * @dai_drv: DAI driver to use for the DAIs
3964 * @count: Number of DAIs
3965 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
3968 static int snd_soc_register_dais(struct snd_soc_component *component,
3969 struct snd_soc_codec *codec, struct snd_soc_dai_driver *dai_drv,
3970 size_t count, bool legacy_dai_naming)
3972 struct device *dev = component->dev;
3973 struct snd_soc_dai *dai;
3977 dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
3979 for (i = 0; i < count; i++) {
3981 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3988 * Back in the old days when we still had component-less DAIs,
3989 * instead of having a static name, component-less DAIs would
3990 * inherit the name of the parent device so it is possible to
3991 * register multiple instances of the DAI. We still need to keep
3992 * the same naming style even though those DAIs are not
3993 * component-less anymore.
3995 if (count == 1 && legacy_dai_naming) {
3996 dai->name = fmt_single_name(dev, &dai->id);
3998 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
4000 dai->id = dai_drv[i].id;
4004 if (dai->name == NULL) {
4010 dai->component = component;
4013 dai->driver = &dai_drv[i];
4014 dai->dapm.dev = dev;
4015 if (!dai->driver->ops)
4016 dai->driver->ops = &null_dai_ops;
4019 dai->dapm.idle_bias_off = 1;
4021 list_add(&dai->list, &component->dai_list);
4023 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
4029 snd_soc_unregister_dais(component);
4035 * snd_soc_register_component - Register a component with the ASoC core
4039 __snd_soc_register_component(struct device *dev,
4040 struct snd_soc_component *cmpnt,
4041 const struct snd_soc_component_driver *cmpnt_drv,
4042 struct snd_soc_codec *codec,
4043 struct snd_soc_dai_driver *dai_drv,
4044 int num_dai, bool allow_single_dai)
4048 dev_dbg(dev, "component register %s\n", dev_name(dev));
4051 dev_err(dev, "ASoC: Failed to connecting component\n");
4055 cmpnt->name = fmt_single_name(dev, &cmpnt->id);
4057 dev_err(dev, "ASoC: Failed to simplifying name\n");
4062 cmpnt->driver = cmpnt_drv;
4063 cmpnt->dai_drv = dai_drv;
4064 cmpnt->num_dai = num_dai;
4065 INIT_LIST_HEAD(&cmpnt->dai_list);
4067 ret = snd_soc_register_dais(cmpnt, codec, dai_drv, num_dai,
4070 dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret);
4071 goto error_component_name;
4074 mutex_lock(&client_mutex);
4075 list_add(&cmpnt->list, &component_list);
4076 mutex_unlock(&client_mutex);
4078 dev_dbg(cmpnt->dev, "ASoC: Registered component '%s'\n", cmpnt->name);
4082 error_component_name:
4088 int snd_soc_register_component(struct device *dev,
4089 const struct snd_soc_component_driver *cmpnt_drv,
4090 struct snd_soc_dai_driver *dai_drv,
4093 struct snd_soc_component *cmpnt;
4095 cmpnt = devm_kzalloc(dev, sizeof(*cmpnt), GFP_KERNEL);
4097 dev_err(dev, "ASoC: Failed to allocate memory\n");
4101 cmpnt->ignore_pmdown_time = true;
4103 return __snd_soc_register_component(dev, cmpnt, cmpnt_drv, NULL,
4104 dai_drv, num_dai, true);
4106 EXPORT_SYMBOL_GPL(snd_soc_register_component);
4109 * snd_soc_unregister_component - Unregister a component from the ASoC core
4112 void snd_soc_unregister_component(struct device *dev)
4114 struct snd_soc_component *cmpnt;
4116 list_for_each_entry(cmpnt, &component_list, list) {
4117 if (dev == cmpnt->dev)
4123 snd_soc_unregister_dais(cmpnt);
4125 mutex_lock(&client_mutex);
4126 list_del(&cmpnt->list);
4127 mutex_unlock(&client_mutex);
4129 dev_dbg(dev, "ASoC: Unregistered component '%s'\n", cmpnt->name);
4132 EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
4135 * snd_soc_add_platform - Add a platform to the ASoC core
4136 * @dev: The parent device for the platform
4137 * @platform: The platform to add
4138 * @platform_driver: The driver for the platform
4140 int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
4141 const struct snd_soc_platform_driver *platform_drv)
4143 /* create platform component name */
4144 platform->name = fmt_single_name(dev, &platform->id);
4145 if (platform->name == NULL)
4148 platform->dev = dev;
4149 platform->driver = platform_drv;
4150 platform->dapm.dev = dev;
4151 platform->dapm.platform = platform;
4152 platform->dapm.stream_event = platform_drv->stream_event;
4153 mutex_init(&platform->mutex);
4155 mutex_lock(&client_mutex);
4156 list_add(&platform->list, &platform_list);
4157 mutex_unlock(&client_mutex);
4159 dev_dbg(dev, "ASoC: Registered platform '%s'\n", platform->name);
4163 EXPORT_SYMBOL_GPL(snd_soc_add_platform);
4166 * snd_soc_register_platform - Register a platform with the ASoC core
4168 * @platform: platform to register
4170 int snd_soc_register_platform(struct device *dev,
4171 const struct snd_soc_platform_driver *platform_drv)
4173 struct snd_soc_platform *platform;
4176 dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
4178 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
4179 if (platform == NULL)
4182 ret = snd_soc_add_platform(dev, platform, platform_drv);
4188 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
4191 * snd_soc_remove_platform - Remove a platform from the ASoC core
4192 * @platform: the platform to remove
4194 void snd_soc_remove_platform(struct snd_soc_platform *platform)
4196 mutex_lock(&client_mutex);
4197 list_del(&platform->list);
4198 mutex_unlock(&client_mutex);
4200 dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
4202 kfree(platform->name);
4204 EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
4206 struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
4208 struct snd_soc_platform *platform;
4210 list_for_each_entry(platform, &platform_list, list) {
4211 if (dev == platform->dev)
4217 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
4220 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
4222 * @platform: platform to unregister
4224 void snd_soc_unregister_platform(struct device *dev)
4226 struct snd_soc_platform *platform;
4228 platform = snd_soc_lookup_platform(dev);
4232 snd_soc_remove_platform(platform);
4235 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
4237 static u64 codec_format_map[] = {
4238 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
4239 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
4240 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
4241 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
4242 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
4243 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
4244 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4245 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4246 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
4247 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
4248 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
4249 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
4250 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
4251 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
4252 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
4253 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
4256 /* Fix up the DAI formats for endianness: codecs don't actually see
4257 * the endianness of the data but we're using the CPU format
4258 * definitions which do need to include endianness so we ensure that
4259 * codec DAIs always have both big and little endian variants set.
4261 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
4265 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
4266 if (stream->formats & codec_format_map[i])
4267 stream->formats |= codec_format_map[i];
4271 * snd_soc_register_codec - Register a codec with the ASoC core
4273 * @codec: codec to register
4275 int snd_soc_register_codec(struct device *dev,
4276 const struct snd_soc_codec_driver *codec_drv,
4277 struct snd_soc_dai_driver *dai_drv,
4280 struct snd_soc_codec *codec;
4283 dev_dbg(dev, "codec register %s\n", dev_name(dev));
4285 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
4289 /* create CODEC component name */
4290 codec->name = fmt_single_name(dev, &codec->id);
4291 if (codec->name == NULL) {
4296 codec->write = codec_drv->write;
4297 codec->read = codec_drv->read;
4298 codec->volatile_register = codec_drv->volatile_register;
4299 codec->readable_register = codec_drv->readable_register;
4300 codec->writable_register = codec_drv->writable_register;
4301 codec->component.ignore_pmdown_time = codec_drv->ignore_pmdown_time;
4302 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
4303 codec->dapm.dev = dev;
4304 codec->dapm.codec = codec;
4305 codec->dapm.seq_notifier = codec_drv->seq_notifier;
4306 codec->dapm.stream_event = codec_drv->stream_event;
4308 codec->driver = codec_drv;
4309 codec->num_dai = num_dai;
4310 mutex_init(&codec->mutex);
4312 for (i = 0; i < num_dai; i++) {
4313 fixup_codec_formats(&dai_drv[i].playback);
4314 fixup_codec_formats(&dai_drv[i].capture);
4317 mutex_lock(&client_mutex);
4318 list_add(&codec->list, &codec_list);
4319 mutex_unlock(&client_mutex);
4321 /* register component */
4322 ret = __snd_soc_register_component(dev, &codec->component,
4323 &codec_drv->component_driver,
4324 codec, dai_drv, num_dai, false);
4326 dev_err(codec->dev, "ASoC: Failed to regster component: %d\n", ret);
4327 goto fail_codec_name;
4330 dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n", codec->name);
4334 mutex_lock(&client_mutex);
4335 list_del(&codec->list);
4336 mutex_unlock(&client_mutex);
4343 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
4346 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4348 * @codec: codec to unregister
4350 void snd_soc_unregister_codec(struct device *dev)
4352 struct snd_soc_codec *codec;
4354 list_for_each_entry(codec, &codec_list, list) {
4355 if (dev == codec->dev)
4361 snd_soc_unregister_component(dev);
4363 mutex_lock(&client_mutex);
4364 list_del(&codec->list);
4365 mutex_unlock(&client_mutex);
4367 dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n", codec->name);
4369 snd_soc_cache_exit(codec);
4373 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
4375 /* Retrieve a card's name from device tree */
4376 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
4377 const char *propname)
4379 struct device_node *np = card->dev->of_node;
4382 ret = of_property_read_string_index(np, propname, 0, &card->name);
4384 * EINVAL means the property does not exist. This is fine providing
4385 * card->name was previously set, which is checked later in
4386 * snd_soc_register_card.
4388 if (ret < 0 && ret != -EINVAL) {
4390 "ASoC: Property '%s' could not be read: %d\n",
4397 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
4399 static const struct snd_soc_dapm_widget simple_widgets[] = {
4400 SND_SOC_DAPM_MIC("Microphone", NULL),
4401 SND_SOC_DAPM_LINE("Line", NULL),
4402 SND_SOC_DAPM_HP("Headphone", NULL),
4403 SND_SOC_DAPM_SPK("Speaker", NULL),
4406 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
4407 const char *propname)
4409 struct device_node *np = card->dev->of_node;
4410 struct snd_soc_dapm_widget *widgets;
4411 const char *template, *wname;
4412 int i, j, num_widgets, ret;
4414 num_widgets = of_property_count_strings(np, propname);
4415 if (num_widgets < 0) {
4417 "ASoC: Property '%s' does not exist\n", propname);
4420 if (num_widgets & 1) {
4422 "ASoC: Property '%s' length is not even\n", propname);
4428 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4433 widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets),
4437 "ASoC: Could not allocate memory for widgets\n");
4441 for (i = 0; i < num_widgets; i++) {
4442 ret = of_property_read_string_index(np, propname,
4446 "ASoC: Property '%s' index %d read error:%d\n",
4447 propname, 2 * i, ret);
4451 for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) {
4452 if (!strncmp(template, simple_widgets[j].name,
4453 strlen(simple_widgets[j].name))) {
4454 widgets[i] = simple_widgets[j];
4459 if (j >= ARRAY_SIZE(simple_widgets)) {
4461 "ASoC: DAPM widget '%s' is not supported\n",
4466 ret = of_property_read_string_index(np, propname,
4471 "ASoC: Property '%s' index %d read error:%d\n",
4472 propname, (2 * i) + 1, ret);
4476 widgets[i].name = wname;
4479 card->dapm_widgets = widgets;
4480 card->num_dapm_widgets = num_widgets;
4484 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets);
4486 int snd_soc_of_parse_tdm_slot(struct device_node *np,
4487 unsigned int *slots,
4488 unsigned int *slot_width)
4493 if (of_property_read_bool(np, "dai-tdm-slot-num")) {
4494 ret = of_property_read_u32(np, "dai-tdm-slot-num", &val);
4502 if (of_property_read_bool(np, "dai-tdm-slot-width")) {
4503 ret = of_property_read_u32(np, "dai-tdm-slot-width", &val);
4513 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot);
4515 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
4516 const char *propname)
4518 struct device_node *np = card->dev->of_node;
4520 struct snd_soc_dapm_route *routes;
4523 num_routes = of_property_count_strings(np, propname);
4524 if (num_routes < 0 || num_routes & 1) {
4526 "ASoC: Property '%s' does not exist or its length is not even\n",
4532 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4537 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
4541 "ASoC: Could not allocate DAPM route table\n");
4545 for (i = 0; i < num_routes; i++) {
4546 ret = of_property_read_string_index(np, propname,
4547 2 * i, &routes[i].sink);
4550 "ASoC: Property '%s' index %d could not be read: %d\n",
4551 propname, 2 * i, ret);
4554 ret = of_property_read_string_index(np, propname,
4555 (2 * i) + 1, &routes[i].source);
4558 "ASoC: Property '%s' index %d could not be read: %d\n",
4559 propname, (2 * i) + 1, ret);
4564 card->num_dapm_routes = num_routes;
4565 card->dapm_routes = routes;
4569 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
4571 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
4576 unsigned int format = 0;
4582 } of_fmt_table[] = {
4583 { "i2s", SND_SOC_DAIFMT_I2S },
4584 { "right_j", SND_SOC_DAIFMT_RIGHT_J },
4585 { "left_j", SND_SOC_DAIFMT_LEFT_J },
4586 { "dsp_a", SND_SOC_DAIFMT_DSP_A },
4587 { "dsp_b", SND_SOC_DAIFMT_DSP_B },
4588 { "ac97", SND_SOC_DAIFMT_AC97 },
4589 { "pdm", SND_SOC_DAIFMT_PDM},
4590 { "msb", SND_SOC_DAIFMT_MSB },
4591 { "lsb", SND_SOC_DAIFMT_LSB },
4598 * check "[prefix]format = xxx"
4599 * SND_SOC_DAIFMT_FORMAT_MASK area
4601 snprintf(prop, sizeof(prop), "%sformat", prefix);
4602 ret = of_property_read_string(np, prop, &str);
4604 for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
4605 if (strcmp(str, of_fmt_table[i].name) == 0) {
4606 format |= of_fmt_table[i].val;
4613 * check "[prefix]continuous-clock"
4614 * SND_SOC_DAIFMT_CLOCK_MASK area
4616 snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
4617 if (of_get_property(np, prop, NULL))
4618 format |= SND_SOC_DAIFMT_CONT;
4620 format |= SND_SOC_DAIFMT_GATED;
4623 * check "[prefix]bitclock-inversion"
4624 * check "[prefix]frame-inversion"
4625 * SND_SOC_DAIFMT_INV_MASK area
4627 snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
4628 bit = !!of_get_property(np, prop, NULL);
4630 snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
4631 frame = !!of_get_property(np, prop, NULL);
4633 switch ((bit << 4) + frame) {
4635 format |= SND_SOC_DAIFMT_IB_IF;
4638 format |= SND_SOC_DAIFMT_IB_NF;
4641 format |= SND_SOC_DAIFMT_NB_IF;
4644 /* SND_SOC_DAIFMT_NB_NF is default */
4649 * check "[prefix]bitclock-master"
4650 * check "[prefix]frame-master"
4651 * SND_SOC_DAIFMT_MASTER_MASK area
4653 snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
4654 bit = !!of_get_property(np, prop, NULL);
4656 snprintf(prop, sizeof(prop), "%sframe-master", prefix);
4657 frame = !!of_get_property(np, prop, NULL);
4659 switch ((bit << 4) + frame) {
4661 format |= SND_SOC_DAIFMT_CBM_CFM;
4664 format |= SND_SOC_DAIFMT_CBM_CFS;
4667 format |= SND_SOC_DAIFMT_CBS_CFM;
4670 format |= SND_SOC_DAIFMT_CBS_CFS;
4676 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
4678 int snd_soc_of_get_dai_name(struct device_node *of_node,
4679 const char **dai_name)
4681 struct snd_soc_component *pos;
4682 struct of_phandle_args args;
4685 ret = of_parse_phandle_with_args(of_node, "sound-dai",
4686 "#sound-dai-cells", 0, &args);
4690 ret = -EPROBE_DEFER;
4692 mutex_lock(&client_mutex);
4693 list_for_each_entry(pos, &component_list, list) {
4694 if (pos->dev->of_node != args.np)
4697 if (pos->driver->of_xlate_dai_name) {
4698 ret = pos->driver->of_xlate_dai_name(pos, &args, dai_name);
4702 switch (args.args_count) {
4704 id = 0; /* same as dai_drv[0] */
4714 if (id < 0 || id >= pos->num_dai) {
4721 *dai_name = pos->dai_drv[id].name;
4723 *dai_name = pos->name;
4728 mutex_unlock(&client_mutex);
4730 of_node_put(args.np);
4734 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
4736 static int __init snd_soc_init(void)
4738 #ifdef CONFIG_DEBUG_FS
4739 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
4740 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
4741 pr_warn("ASoC: Failed to create debugfs directory\n");
4742 snd_soc_debugfs_root = NULL;
4745 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
4747 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4749 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
4751 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4753 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
4754 &platform_list_fops))
4755 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4758 snd_soc_util_init();
4760 return platform_driver_register(&soc_driver);
4762 module_init(snd_soc_init);
4764 static void __exit snd_soc_exit(void)
4766 snd_soc_util_exit();
4768 #ifdef CONFIG_DEBUG_FS
4769 debugfs_remove_recursive(snd_soc_debugfs_root);
4771 platform_driver_unregister(&soc_driver);
4773 module_exit(snd_soc_exit);
4775 /* Module information */
4776 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4777 MODULE_DESCRIPTION("ALSA SoC Core");
4778 MODULE_LICENSE("GPL");
4779 MODULE_ALIAS("platform:soc-audio");