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 /* only support larger than PAGE_SIZE bytes debugfs
158 * entries for the default case */
160 if (total + len >= count - 1)
162 format_register_str(codec, i, buf + total, len);
168 total = min(total, count - 1);
173 static ssize_t codec_reg_show(struct device *dev,
174 struct device_attribute *attr, char *buf)
176 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
178 return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
181 static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
183 static ssize_t pmdown_time_show(struct device *dev,
184 struct device_attribute *attr, char *buf)
186 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
188 return sprintf(buf, "%ld\n", rtd->pmdown_time);
191 static ssize_t pmdown_time_set(struct device *dev,
192 struct device_attribute *attr,
193 const char *buf, size_t count)
195 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
198 ret = kstrtol(buf, 10, &rtd->pmdown_time);
205 static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
207 #ifdef CONFIG_DEBUG_FS
208 static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
209 size_t count, loff_t *ppos)
212 struct snd_soc_codec *codec = file->private_data;
215 if (*ppos < 0 || !count)
218 buf = kmalloc(count, GFP_KERNEL);
222 ret = soc_codec_reg_show(codec, buf, count, *ppos);
224 if (copy_to_user(user_buf, buf, ret)) {
235 static ssize_t codec_reg_write_file(struct file *file,
236 const char __user *user_buf, size_t count, loff_t *ppos)
241 unsigned long reg, value;
242 struct snd_soc_codec *codec = file->private_data;
245 buf_size = min(count, (sizeof(buf)-1));
246 if (copy_from_user(buf, user_buf, buf_size))
250 while (*start == ' ')
252 reg = simple_strtoul(start, &start, 16);
253 while (*start == ' ')
255 ret = kstrtoul(start, 16, &value);
259 /* Userspace has been fiddling around behind the kernel's back */
260 add_taint(TAINT_USER, LOCKDEP_NOW_UNRELIABLE);
262 snd_soc_write(codec, reg, value);
266 static const struct file_operations codec_reg_fops = {
268 .read = codec_reg_read_file,
269 .write = codec_reg_write_file,
270 .llseek = default_llseek,
273 static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
275 struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
277 codec->debugfs_codec_root = debugfs_create_dir(codec->name,
279 if (!codec->debugfs_codec_root) {
281 "ASoC: Failed to create codec debugfs directory\n");
285 debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
287 debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
290 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
291 codec->debugfs_codec_root,
292 codec, &codec_reg_fops);
293 if (!codec->debugfs_reg)
295 "ASoC: Failed to create codec register debugfs file\n");
297 snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root);
300 static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
302 debugfs_remove_recursive(codec->debugfs_codec_root);
305 static void soc_init_platform_debugfs(struct snd_soc_platform *platform)
307 struct dentry *debugfs_card_root = platform->card->debugfs_card_root;
309 platform->debugfs_platform_root = debugfs_create_dir(platform->name,
311 if (!platform->debugfs_platform_root) {
312 dev_warn(platform->dev,
313 "ASoC: Failed to create platform debugfs directory\n");
317 snd_soc_dapm_debugfs_init(&platform->dapm,
318 platform->debugfs_platform_root);
321 static void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
323 debugfs_remove_recursive(platform->debugfs_platform_root);
326 static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
327 size_t count, loff_t *ppos)
329 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
330 ssize_t len, ret = 0;
331 struct snd_soc_codec *codec;
336 list_for_each_entry(codec, &codec_list, list) {
337 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
341 if (ret > PAGE_SIZE) {
348 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
355 static const struct file_operations codec_list_fops = {
356 .read = codec_list_read_file,
357 .llseek = default_llseek,/* read accesses f_pos */
360 static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
361 size_t count, loff_t *ppos)
363 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
364 ssize_t len, ret = 0;
365 struct snd_soc_component *component;
366 struct snd_soc_dai *dai;
371 list_for_each_entry(component, &component_list, list) {
372 list_for_each_entry(dai, &component->dai_list, list) {
373 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
377 if (ret > PAGE_SIZE) {
384 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
391 static const struct file_operations dai_list_fops = {
392 .read = dai_list_read_file,
393 .llseek = default_llseek,/* read accesses f_pos */
396 static ssize_t platform_list_read_file(struct file *file,
397 char __user *user_buf,
398 size_t count, loff_t *ppos)
400 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
401 ssize_t len, ret = 0;
402 struct snd_soc_platform *platform;
407 list_for_each_entry(platform, &platform_list, list) {
408 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
412 if (ret > PAGE_SIZE) {
418 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
425 static const struct file_operations platform_list_fops = {
426 .read = platform_list_read_file,
427 .llseek = default_llseek,/* read accesses f_pos */
430 static void soc_init_card_debugfs(struct snd_soc_card *card)
432 card->debugfs_card_root = debugfs_create_dir(card->name,
433 snd_soc_debugfs_root);
434 if (!card->debugfs_card_root) {
436 "ASoC: Failed to create card debugfs directory\n");
440 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
441 card->debugfs_card_root,
443 if (!card->debugfs_pop_time)
445 "ASoC: Failed to create pop time debugfs file\n");
448 static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
450 debugfs_remove_recursive(card->debugfs_card_root);
455 static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
459 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
463 static inline void soc_init_platform_debugfs(struct snd_soc_platform *platform)
467 static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
471 static inline void soc_init_card_debugfs(struct snd_soc_card *card)
475 static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
480 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
481 const char *dai_link, int stream)
485 for (i = 0; i < card->num_links; i++) {
486 if (card->rtd[i].dai_link->no_pcm &&
487 !strcmp(card->rtd[i].dai_link->name, dai_link))
488 return card->rtd[i].pcm->streams[stream].substream;
490 dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link);
493 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);
495 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
496 const char *dai_link)
500 for (i = 0; i < card->num_links; i++) {
501 if (!strcmp(card->rtd[i].dai_link->name, dai_link))
502 return &card->rtd[i];
504 dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link);
507 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
509 #ifdef CONFIG_SND_SOC_AC97_BUS
510 /* unregister ac97 codec */
511 static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
513 if (codec->ac97->dev.bus)
514 device_unregister(&codec->ac97->dev);
518 /* stop no dev release warning */
519 static void soc_ac97_device_release(struct device *dev){}
521 /* register ac97 codec to bus */
522 static int soc_ac97_dev_register(struct snd_soc_codec *codec)
526 codec->ac97->dev.bus = &ac97_bus_type;
527 codec->ac97->dev.parent = codec->card->dev;
528 codec->ac97->dev.release = soc_ac97_device_release;
530 dev_set_name(&codec->ac97->dev, "%d-%d:%s",
531 codec->card->snd_card->number, 0, codec->name);
532 err = device_register(&codec->ac97->dev);
534 dev_err(codec->dev, "ASoC: Can't register ac97 bus\n");
535 codec->ac97->dev.bus = NULL;
542 static void codec2codec_close_delayed_work(struct work_struct *work)
544 /* Currently nothing to do for c2c links
545 * Since c2c links are internal nodes in the DAPM graph and
546 * don't interface with the outside world or application layer
547 * we don't have to do any special handling on close.
551 #ifdef CONFIG_PM_SLEEP
552 /* powers down audio subsystem for suspend */
553 int snd_soc_suspend(struct device *dev)
555 struct snd_soc_card *card = dev_get_drvdata(dev);
556 struct snd_soc_codec *codec;
559 /* If the initialization of this soc device failed, there is no codec
560 * associated with it. Just bail out in this case.
562 if (list_empty(&card->codec_dev_list))
565 /* Due to the resume being scheduled into a workqueue we could
566 * suspend before that's finished - wait for it to complete.
568 snd_power_lock(card->snd_card);
569 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
570 snd_power_unlock(card->snd_card);
572 /* we're going to block userspace touching us until resume completes */
573 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
575 /* mute any active DACs */
576 for (i = 0; i < card->num_rtd; i++) {
577 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
578 struct snd_soc_dai_driver *drv = dai->driver;
580 if (card->rtd[i].dai_link->ignore_suspend)
583 if (drv->ops->digital_mute && dai->playback_active)
584 drv->ops->digital_mute(dai, 1);
587 /* suspend all pcms */
588 for (i = 0; i < card->num_rtd; i++) {
589 if (card->rtd[i].dai_link->ignore_suspend)
592 snd_pcm_suspend_all(card->rtd[i].pcm);
595 if (card->suspend_pre)
596 card->suspend_pre(card);
598 for (i = 0; i < card->num_rtd; i++) {
599 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
600 struct snd_soc_platform *platform = card->rtd[i].platform;
602 if (card->rtd[i].dai_link->ignore_suspend)
605 if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
606 cpu_dai->driver->suspend(cpu_dai);
607 if (platform->driver->suspend && !platform->suspended) {
608 platform->driver->suspend(cpu_dai);
609 platform->suspended = 1;
613 /* close any waiting streams and save state */
614 for (i = 0; i < card->num_rtd; i++) {
615 flush_delayed_work(&card->rtd[i].delayed_work);
616 card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
619 for (i = 0; i < card->num_rtd; i++) {
621 if (card->rtd[i].dai_link->ignore_suspend)
624 snd_soc_dapm_stream_event(&card->rtd[i],
625 SNDRV_PCM_STREAM_PLAYBACK,
626 SND_SOC_DAPM_STREAM_SUSPEND);
628 snd_soc_dapm_stream_event(&card->rtd[i],
629 SNDRV_PCM_STREAM_CAPTURE,
630 SND_SOC_DAPM_STREAM_SUSPEND);
633 /* Recheck all analogue paths too */
634 dapm_mark_io_dirty(&card->dapm);
635 snd_soc_dapm_sync(&card->dapm);
637 /* suspend all CODECs */
638 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
639 /* If there are paths active then the CODEC will be held with
640 * bias _ON and should not be suspended. */
641 if (!codec->suspended && codec->driver->suspend) {
642 switch (codec->dapm.bias_level) {
643 case SND_SOC_BIAS_STANDBY:
645 * If the CODEC is capable of idle
646 * bias off then being in STANDBY
647 * means it's doing something,
648 * otherwise fall through.
650 if (codec->dapm.idle_bias_off) {
652 "ASoC: idle_bias_off CODEC on over suspend\n");
655 case SND_SOC_BIAS_OFF:
656 codec->driver->suspend(codec);
657 codec->suspended = 1;
658 codec->cache_sync = 1;
659 if (codec->component.regmap)
660 regcache_mark_dirty(codec->component.regmap);
661 /* deactivate pins to sleep state */
662 pinctrl_pm_select_sleep_state(codec->dev);
666 "ASoC: CODEC is on over suspend\n");
672 for (i = 0; i < card->num_rtd; i++) {
673 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
675 if (card->rtd[i].dai_link->ignore_suspend)
678 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
679 cpu_dai->driver->suspend(cpu_dai);
681 /* deactivate pins to sleep state */
682 pinctrl_pm_select_sleep_state(cpu_dai->dev);
685 if (card->suspend_post)
686 card->suspend_post(card);
690 EXPORT_SYMBOL_GPL(snd_soc_suspend);
692 /* deferred resume work, so resume can complete before we finished
693 * setting our codec back up, which can be very slow on I2C
695 static void soc_resume_deferred(struct work_struct *work)
697 struct snd_soc_card *card =
698 container_of(work, struct snd_soc_card, deferred_resume_work);
699 struct snd_soc_codec *codec;
702 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
703 * so userspace apps are blocked from touching us
706 dev_dbg(card->dev, "ASoC: starting resume work\n");
708 /* Bring us up into D2 so that DAPM starts enabling things */
709 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
711 if (card->resume_pre)
712 card->resume_pre(card);
714 /* resume AC97 DAIs */
715 for (i = 0; i < card->num_rtd; i++) {
716 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
718 if (card->rtd[i].dai_link->ignore_suspend)
721 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
722 cpu_dai->driver->resume(cpu_dai);
725 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
726 /* If the CODEC was idle over suspend then it will have been
727 * left with bias OFF or STANDBY and suspended so we must now
728 * resume. Otherwise the suspend was suppressed.
730 if (codec->driver->resume && codec->suspended) {
731 switch (codec->dapm.bias_level) {
732 case SND_SOC_BIAS_STANDBY:
733 case SND_SOC_BIAS_OFF:
734 codec->driver->resume(codec);
735 codec->suspended = 0;
739 "ASoC: CODEC was on over suspend\n");
745 for (i = 0; i < card->num_rtd; i++) {
747 if (card->rtd[i].dai_link->ignore_suspend)
750 snd_soc_dapm_stream_event(&card->rtd[i],
751 SNDRV_PCM_STREAM_PLAYBACK,
752 SND_SOC_DAPM_STREAM_RESUME);
754 snd_soc_dapm_stream_event(&card->rtd[i],
755 SNDRV_PCM_STREAM_CAPTURE,
756 SND_SOC_DAPM_STREAM_RESUME);
759 /* unmute any active DACs */
760 for (i = 0; i < card->num_rtd; i++) {
761 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
762 struct snd_soc_dai_driver *drv = dai->driver;
764 if (card->rtd[i].dai_link->ignore_suspend)
767 if (drv->ops->digital_mute && dai->playback_active)
768 drv->ops->digital_mute(dai, 0);
771 for (i = 0; i < card->num_rtd; i++) {
772 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
773 struct snd_soc_platform *platform = card->rtd[i].platform;
775 if (card->rtd[i].dai_link->ignore_suspend)
778 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
779 cpu_dai->driver->resume(cpu_dai);
780 if (platform->driver->resume && platform->suspended) {
781 platform->driver->resume(cpu_dai);
782 platform->suspended = 0;
786 if (card->resume_post)
787 card->resume_post(card);
789 dev_dbg(card->dev, "ASoC: resume work completed\n");
791 /* userspace can access us now we are back as we were before */
792 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
794 /* Recheck all analogue paths too */
795 dapm_mark_io_dirty(&card->dapm);
796 snd_soc_dapm_sync(&card->dapm);
799 /* powers up audio subsystem after a suspend */
800 int snd_soc_resume(struct device *dev)
802 struct snd_soc_card *card = dev_get_drvdata(dev);
803 int i, ac97_control = 0;
805 /* If the initialization of this soc device failed, there is no codec
806 * associated with it. Just bail out in this case.
808 if (list_empty(&card->codec_dev_list))
811 /* activate pins from sleep state */
812 for (i = 0; i < card->num_rtd; i++) {
813 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
814 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
816 pinctrl_pm_select_default_state(cpu_dai->dev);
817 if (codec_dai->active)
818 pinctrl_pm_select_default_state(codec_dai->dev);
821 /* AC97 devices might have other drivers hanging off them so
822 * need to resume immediately. Other drivers don't have that
823 * problem and may take a substantial amount of time to resume
824 * due to I/O costs and anti-pop so handle them out of line.
826 for (i = 0; i < card->num_rtd; i++) {
827 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
828 ac97_control |= cpu_dai->driver->ac97_control;
831 dev_dbg(dev, "ASoC: Resuming AC97 immediately\n");
832 soc_resume_deferred(&card->deferred_resume_work);
834 dev_dbg(dev, "ASoC: Scheduling resume work\n");
835 if (!schedule_work(&card->deferred_resume_work))
836 dev_err(dev, "ASoC: resume work item may be lost\n");
841 EXPORT_SYMBOL_GPL(snd_soc_resume);
843 #define snd_soc_suspend NULL
844 #define snd_soc_resume NULL
847 static const struct snd_soc_dai_ops null_dai_ops = {
850 static struct snd_soc_codec *soc_find_codec(const struct device_node *codec_of_node,
851 const char *codec_name)
853 struct snd_soc_codec *codec;
855 list_for_each_entry(codec, &codec_list, list) {
857 if (codec->dev->of_node != codec_of_node)
860 if (strcmp(codec->name, codec_name))
870 static struct snd_soc_dai *soc_find_codec_dai(struct snd_soc_codec *codec,
871 const char *codec_dai_name)
873 struct snd_soc_dai *codec_dai;
875 list_for_each_entry(codec_dai, &codec->component.dai_list, list) {
876 if (!strcmp(codec_dai->name, codec_dai_name)) {
884 static int soc_bind_dai_link(struct snd_soc_card *card, int num)
886 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
887 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
888 struct snd_soc_component *component;
889 struct snd_soc_platform *platform;
890 struct snd_soc_dai *cpu_dai;
891 const char *platform_name;
893 dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num);
895 /* Find CPU DAI from registered DAIs*/
896 list_for_each_entry(component, &component_list, list) {
897 if (dai_link->cpu_of_node &&
898 component->dev->of_node != dai_link->cpu_of_node)
900 if (dai_link->cpu_name &&
901 strcmp(dev_name(component->dev), dai_link->cpu_name))
903 list_for_each_entry(cpu_dai, &component->dai_list, list) {
904 if (dai_link->cpu_dai_name &&
905 strcmp(cpu_dai->name, dai_link->cpu_dai_name))
908 rtd->cpu_dai = cpu_dai;
913 dev_err(card->dev, "ASoC: CPU DAI %s not registered\n",
914 dai_link->cpu_dai_name);
915 return -EPROBE_DEFER;
918 /* Find CODEC from registered list */
919 rtd->codec = soc_find_codec(dai_link->codec_of_node,
920 dai_link->codec_name);
922 dev_err(card->dev, "ASoC: CODEC %s not registered\n",
923 dai_link->codec_name);
924 return -EPROBE_DEFER;
927 /* Find CODEC DAI from registered list */
928 rtd->codec_dai = soc_find_codec_dai(rtd->codec,
929 dai_link->codec_dai_name);
930 if (!rtd->codec_dai) {
931 dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
932 dai_link->codec_dai_name);
933 return -EPROBE_DEFER;
936 /* if there's no platform we match on the empty platform */
937 platform_name = dai_link->platform_name;
938 if (!platform_name && !dai_link->platform_of_node)
939 platform_name = "snd-soc-dummy";
941 /* find one from the set of registered platforms */
942 list_for_each_entry(platform, &platform_list, list) {
943 if (dai_link->platform_of_node) {
944 if (platform->dev->of_node !=
945 dai_link->platform_of_node)
948 if (strcmp(platform->name, platform_name))
952 rtd->platform = platform;
954 if (!rtd->platform) {
955 dev_err(card->dev, "ASoC: platform %s not registered\n",
956 dai_link->platform_name);
957 return -EPROBE_DEFER;
965 static int soc_remove_platform(struct snd_soc_platform *platform)
969 if (platform->driver->remove) {
970 ret = platform->driver->remove(platform);
972 dev_err(platform->dev, "ASoC: failed to remove %d\n",
976 /* Make sure all DAPM widgets are freed */
977 snd_soc_dapm_free(&platform->dapm);
979 soc_cleanup_platform_debugfs(platform);
980 platform->probed = 0;
981 list_del(&platform->card_list);
982 module_put(platform->dev->driver->owner);
987 static void soc_remove_codec(struct snd_soc_codec *codec)
991 if (codec->driver->remove) {
992 err = codec->driver->remove(codec);
994 dev_err(codec->dev, "ASoC: failed to remove %d\n", err);
997 /* Make sure all DAPM widgets are freed */
998 snd_soc_dapm_free(&codec->dapm);
1000 soc_cleanup_codec_debugfs(codec);
1002 list_del(&codec->card_list);
1003 module_put(codec->dev->driver->owner);
1006 static void soc_remove_codec_dai(struct snd_soc_dai *codec_dai, int order)
1010 if (codec_dai && codec_dai->probed &&
1011 codec_dai->driver->remove_order == order) {
1012 if (codec_dai->driver->remove) {
1013 err = codec_dai->driver->remove(codec_dai);
1015 dev_err(codec_dai->dev,
1016 "ASoC: failed to remove %s: %d\n",
1017 codec_dai->name, err);
1019 codec_dai->probed = 0;
1023 static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order)
1025 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1026 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
1029 /* unregister the rtd device */
1030 if (rtd->dev_registered) {
1031 device_remove_file(rtd->dev, &dev_attr_pmdown_time);
1032 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1033 device_unregister(rtd->dev);
1034 rtd->dev_registered = 0;
1037 /* remove the CODEC DAI */
1038 soc_remove_codec_dai(codec_dai, order);
1040 /* remove the cpu_dai */
1041 if (cpu_dai && cpu_dai->probed &&
1042 cpu_dai->driver->remove_order == order) {
1043 if (cpu_dai->driver->remove) {
1044 err = cpu_dai->driver->remove(cpu_dai);
1046 dev_err(cpu_dai->dev,
1047 "ASoC: failed to remove %s: %d\n",
1048 cpu_dai->name, err);
1050 cpu_dai->probed = 0;
1052 if (!cpu_dai->codec) {
1053 snd_soc_dapm_free(&cpu_dai->dapm);
1054 module_put(cpu_dai->dev->driver->owner);
1059 static void soc_remove_link_components(struct snd_soc_card *card, int num,
1062 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1063 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1064 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1065 struct snd_soc_platform *platform = rtd->platform;
1066 struct snd_soc_codec *codec;
1068 /* remove the platform */
1069 if (platform && platform->probed &&
1070 platform->driver->remove_order == order) {
1071 soc_remove_platform(platform);
1074 /* remove the CODEC-side CODEC */
1076 codec = codec_dai->codec;
1077 if (codec && codec->probed &&
1078 codec->driver->remove_order == order)
1079 soc_remove_codec(codec);
1082 /* remove any CPU-side CODEC */
1084 codec = cpu_dai->codec;
1085 if (codec && codec->probed &&
1086 codec->driver->remove_order == order)
1087 soc_remove_codec(codec);
1091 static void soc_remove_dai_links(struct snd_soc_card *card)
1095 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1097 for (dai = 0; dai < card->num_rtd; dai++)
1098 soc_remove_link_dais(card, dai, order);
1101 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1103 for (dai = 0; dai < card->num_rtd; dai++)
1104 soc_remove_link_components(card, dai, order);
1110 static void soc_set_name_prefix(struct snd_soc_card *card,
1111 struct snd_soc_codec *codec)
1115 if (card->codec_conf == NULL)
1118 for (i = 0; i < card->num_configs; i++) {
1119 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1120 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
1121 codec->name_prefix = map->name_prefix;
1127 static int soc_probe_codec(struct snd_soc_card *card,
1128 struct snd_soc_codec *codec)
1131 const struct snd_soc_codec_driver *driver = codec->driver;
1132 struct snd_soc_dai *dai;
1135 codec->dapm.card = card;
1136 soc_set_name_prefix(card, codec);
1138 if (!try_module_get(codec->dev->driver->owner))
1141 soc_init_codec_debugfs(codec);
1143 if (driver->dapm_widgets) {
1144 ret = snd_soc_dapm_new_controls(&codec->dapm,
1145 driver->dapm_widgets,
1146 driver->num_dapm_widgets);
1150 "Failed to create new controls %d\n", ret);
1155 /* Create DAPM widgets for each DAI stream */
1156 list_for_each_entry(dai, &codec->component.dai_list, list) {
1157 ret = snd_soc_dapm_new_dai_widgets(&codec->dapm, dai);
1161 "Failed to create DAI widgets %d\n", ret);
1166 codec->dapm.idle_bias_off = driver->idle_bias_off;
1168 if (driver->probe) {
1169 ret = driver->probe(codec);
1172 "ASoC: failed to probe CODEC %d\n", ret);
1175 WARN(codec->dapm.idle_bias_off &&
1176 codec->dapm.bias_level != SND_SOC_BIAS_OFF,
1177 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1181 if (driver->controls)
1182 snd_soc_add_codec_controls(codec, driver->controls,
1183 driver->num_controls);
1184 if (driver->dapm_routes)
1185 snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
1186 driver->num_dapm_routes);
1188 /* mark codec as probed and add to card codec list */
1190 list_add(&codec->card_list, &card->codec_dev_list);
1191 list_add(&codec->dapm.list, &card->dapm_list);
1196 soc_cleanup_codec_debugfs(codec);
1197 module_put(codec->dev->driver->owner);
1202 static int soc_probe_platform(struct snd_soc_card *card,
1203 struct snd_soc_platform *platform)
1206 const struct snd_soc_platform_driver *driver = platform->driver;
1207 struct snd_soc_component *component;
1208 struct snd_soc_dai *dai;
1210 platform->card = card;
1211 platform->dapm.card = card;
1213 if (!try_module_get(platform->dev->driver->owner))
1216 soc_init_platform_debugfs(platform);
1218 if (driver->dapm_widgets)
1219 snd_soc_dapm_new_controls(&platform->dapm,
1220 driver->dapm_widgets, driver->num_dapm_widgets);
1222 /* Create DAPM widgets for each DAI stream */
1223 list_for_each_entry(component, &component_list, list) {
1224 if (component->dev != platform->dev)
1226 list_for_each_entry(dai, &component->dai_list, list)
1227 snd_soc_dapm_new_dai_widgets(&platform->dapm, dai);
1230 platform->dapm.idle_bias_off = 1;
1232 if (driver->probe) {
1233 ret = driver->probe(platform);
1235 dev_err(platform->dev,
1236 "ASoC: failed to probe platform %d\n", ret);
1241 if (driver->controls)
1242 snd_soc_add_platform_controls(platform, driver->controls,
1243 driver->num_controls);
1244 if (driver->dapm_routes)
1245 snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
1246 driver->num_dapm_routes);
1248 /* mark platform as probed and add to card platform list */
1249 platform->probed = 1;
1250 list_add(&platform->card_list, &card->platform_dev_list);
1251 list_add(&platform->dapm.list, &card->dapm_list);
1256 soc_cleanup_platform_debugfs(platform);
1257 module_put(platform->dev->driver->owner);
1262 static void rtd_release(struct device *dev)
1267 static int soc_post_component_init(struct snd_soc_card *card,
1268 struct snd_soc_codec *codec,
1269 int num, int dailess)
1271 struct snd_soc_dai_link *dai_link = NULL;
1272 struct snd_soc_aux_dev *aux_dev = NULL;
1273 struct snd_soc_pcm_runtime *rtd;
1278 dai_link = &card->dai_link[num];
1279 rtd = &card->rtd[num];
1280 name = dai_link->name;
1282 aux_dev = &card->aux_dev[num];
1283 rtd = &card->rtd_aux[num];
1284 name = aux_dev->name;
1288 /* do machine specific initialization */
1289 if (!dailess && dai_link->init)
1290 ret = dai_link->init(rtd);
1291 else if (dailess && aux_dev->init)
1292 ret = aux_dev->init(&codec->dapm);
1294 dev_err(card->dev, "ASoC: failed to init %s: %d\n", name, ret);
1298 /* register the rtd device */
1301 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1304 device_initialize(rtd->dev);
1305 rtd->dev->parent = card->dev;
1306 rtd->dev->release = rtd_release;
1307 rtd->dev->init_name = name;
1308 dev_set_drvdata(rtd->dev, rtd);
1309 mutex_init(&rtd->pcm_mutex);
1310 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1311 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1312 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1313 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1314 ret = device_add(rtd->dev);
1316 /* calling put_device() here to free the rtd->dev */
1317 put_device(rtd->dev);
1319 "ASoC: failed to register runtime device: %d\n", ret);
1322 rtd->dev_registered = 1;
1324 /* add DAPM sysfs entries for this codec */
1325 ret = snd_soc_dapm_sys_add(rtd->dev);
1328 "ASoC: failed to add codec dapm sysfs entries: %d\n", ret);
1330 /* add codec sysfs entries */
1331 ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
1334 "ASoC: failed to add codec sysfs files: %d\n", ret);
1336 #ifdef CONFIG_DEBUG_FS
1337 /* add DPCM sysfs entries */
1338 if (!dailess && !dai_link->dynamic)
1341 ret = soc_dpcm_debugfs_add(rtd);
1343 dev_err(rtd->dev, "ASoC: failed to add dpcm sysfs entries: %d\n", ret);
1350 static int soc_probe_link_components(struct snd_soc_card *card, int num,
1353 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1354 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1355 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1356 struct snd_soc_platform *platform = rtd->platform;
1359 /* probe the CPU-side component, if it is a CODEC */
1360 if (cpu_dai->codec &&
1361 !cpu_dai->codec->probed &&
1362 cpu_dai->codec->driver->probe_order == order) {
1363 ret = soc_probe_codec(card, cpu_dai->codec);
1368 /* probe the CODEC-side component */
1369 if (!codec_dai->codec->probed &&
1370 codec_dai->codec->driver->probe_order == order) {
1371 ret = soc_probe_codec(card, codec_dai->codec);
1376 /* probe the platform */
1377 if (!platform->probed &&
1378 platform->driver->probe_order == order) {
1379 ret = soc_probe_platform(card, platform);
1387 static int soc_probe_codec_dai(struct snd_soc_card *card,
1388 struct snd_soc_dai *codec_dai,
1393 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
1394 if (codec_dai->driver->probe) {
1395 ret = codec_dai->driver->probe(codec_dai);
1397 dev_err(codec_dai->dev,
1398 "ASoC: failed to probe CODEC DAI %s: %d\n",
1399 codec_dai->name, ret);
1404 /* mark codec_dai as probed and add to card dai list */
1405 codec_dai->probed = 1;
1411 static int soc_link_dai_widgets(struct snd_soc_card *card,
1412 struct snd_soc_dai_link *dai_link,
1413 struct snd_soc_dai *cpu_dai,
1414 struct snd_soc_dai *codec_dai)
1416 struct snd_soc_dapm_widget *play_w, *capture_w;
1419 /* link the DAI widgets */
1420 play_w = codec_dai->playback_widget;
1421 capture_w = cpu_dai->capture_widget;
1422 if (play_w && capture_w) {
1423 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1426 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1427 play_w->name, capture_w->name, ret);
1432 play_w = cpu_dai->playback_widget;
1433 capture_w = codec_dai->capture_widget;
1434 if (play_w && capture_w) {
1435 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1438 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1439 play_w->name, capture_w->name, ret);
1447 static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
1449 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1450 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1451 struct snd_soc_codec *codec = rtd->codec;
1452 struct snd_soc_platform *platform = rtd->platform;
1453 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1454 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1457 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1458 card->name, num, order);
1460 /* config components */
1461 cpu_dai->platform = platform;
1462 codec_dai->card = card;
1463 cpu_dai->card = card;
1465 /* set default power off timeout */
1466 rtd->pmdown_time = pmdown_time;
1468 /* probe the cpu_dai */
1469 if (!cpu_dai->probed &&
1470 cpu_dai->driver->probe_order == order) {
1471 if (!cpu_dai->codec) {
1472 cpu_dai->dapm.card = card;
1473 if (!try_module_get(cpu_dai->dev->driver->owner))
1476 list_add(&cpu_dai->dapm.list, &card->dapm_list);
1479 if (cpu_dai->driver->probe) {
1480 ret = cpu_dai->driver->probe(cpu_dai);
1482 dev_err(cpu_dai->dev,
1483 "ASoC: failed to probe CPU DAI %s: %d\n",
1484 cpu_dai->name, ret);
1485 module_put(cpu_dai->dev->driver->owner);
1489 cpu_dai->probed = 1;
1492 /* probe the CODEC DAI */
1493 ret = soc_probe_codec_dai(card, codec_dai, order);
1497 /* complete DAI probe during last probe */
1498 if (order != SND_SOC_COMP_ORDER_LAST)
1501 ret = soc_post_component_init(card, codec, num, 0);
1505 ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
1507 dev_warn(rtd->dev, "ASoC: failed to add pmdown_time sysfs: %d\n",
1510 if (cpu_dai->driver->compress_dai) {
1511 /*create compress_device"*/
1512 ret = soc_new_compress(rtd, num);
1514 dev_err(card->dev, "ASoC: can't create compress %s\n",
1515 dai_link->stream_name);
1520 if (!dai_link->params) {
1521 /* create the pcm */
1522 ret = soc_new_pcm(rtd, num);
1524 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1525 dai_link->stream_name, ret);
1529 INIT_DELAYED_WORK(&rtd->delayed_work,
1530 codec2codec_close_delayed_work);
1532 /* link the DAI widgets */
1533 ret = soc_link_dai_widgets(card, dai_link,
1534 cpu_dai, codec_dai);
1540 /* add platform data for AC97 devices */
1541 if (rtd->codec_dai->driver->ac97_control)
1542 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1547 #ifdef CONFIG_SND_SOC_AC97_BUS
1548 static int soc_register_ac97_codec(struct snd_soc_codec *codec,
1549 struct snd_soc_dai *codec_dai)
1553 /* Only instantiate AC97 if not already done by the adaptor
1554 * for the generic AC97 subsystem.
1556 if (codec_dai->driver->ac97_control && !codec->ac97_registered) {
1558 * It is possible that the AC97 device is already registered to
1559 * the device subsystem. This happens when the device is created
1560 * via snd_ac97_mixer(). Currently only SoC codec that does so
1561 * is the generic AC97 glue but others migh emerge.
1563 * In those cases we don't try to register the device again.
1565 if (!codec->ac97_created)
1568 ret = soc_ac97_dev_register(codec);
1571 "ASoC: AC97 device register failed: %d\n", ret);
1575 codec->ac97_registered = 1;
1580 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1582 return soc_register_ac97_codec(rtd->codec, rtd->codec_dai);
1585 static void soc_unregister_ac97_codec(struct snd_soc_codec *codec)
1587 if (codec->ac97_registered) {
1588 soc_ac97_dev_unregister(codec);
1589 codec->ac97_registered = 0;
1593 static void soc_unregister_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1595 soc_unregister_ac97_codec(rtd->codec);
1599 static int soc_check_aux_dev(struct snd_soc_card *card, int num)
1601 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1602 struct snd_soc_codec *codec;
1604 /* find CODEC from registered CODECs*/
1605 list_for_each_entry(codec, &codec_list, list) {
1606 if (!strcmp(codec->name, aux_dev->codec_name))
1610 dev_err(card->dev, "ASoC: %s not registered\n", aux_dev->codec_name);
1612 return -EPROBE_DEFER;
1615 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1617 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1618 struct snd_soc_codec *codec;
1621 /* find CODEC from registered CODECs*/
1622 list_for_each_entry(codec, &codec_list, list) {
1623 if (!strcmp(codec->name, aux_dev->codec_name)) {
1624 if (codec->probed) {
1626 "ASoC: codec already probed");
1633 /* codec not found */
1634 dev_err(card->dev, "ASoC: codec %s not found", aux_dev->codec_name);
1635 return -EPROBE_DEFER;
1638 ret = soc_probe_codec(card, codec);
1642 ret = soc_post_component_init(card, codec, num, 1);
1648 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1650 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1651 struct snd_soc_codec *codec = rtd->codec;
1653 /* unregister the rtd device */
1654 if (rtd->dev_registered) {
1655 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1656 device_unregister(rtd->dev);
1657 rtd->dev_registered = 0;
1660 if (codec && codec->probed)
1661 soc_remove_codec(codec);
1664 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec)
1668 if (codec->cache_init)
1671 ret = snd_soc_cache_init(codec);
1674 "ASoC: Failed to set cache compression type: %d\n",
1678 codec->cache_init = 1;
1682 static int snd_soc_instantiate_card(struct snd_soc_card *card)
1684 struct snd_soc_codec *codec;
1685 struct snd_soc_dai_link *dai_link;
1686 int ret, i, order, dai_fmt;
1688 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1691 for (i = 0; i < card->num_links; i++) {
1692 ret = soc_bind_dai_link(card, i);
1697 /* check aux_devs too */
1698 for (i = 0; i < card->num_aux_devs; i++) {
1699 ret = soc_check_aux_dev(card, i);
1704 /* initialize the register cache for each available codec */
1705 list_for_each_entry(codec, &codec_list, list) {
1706 if (codec->cache_init)
1708 ret = snd_soc_init_codec_cache(codec);
1713 /* card bind complete so register a sound card */
1714 ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1715 card->owner, 0, &card->snd_card);
1718 "ASoC: can't create sound card for card %s: %d\n",
1723 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1724 card->dapm.dev = card->dev;
1725 card->dapm.card = card;
1726 list_add(&card->dapm.list, &card->dapm_list);
1728 #ifdef CONFIG_DEBUG_FS
1729 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1732 #ifdef CONFIG_PM_SLEEP
1733 /* deferred resume work */
1734 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1737 if (card->dapm_widgets)
1738 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1739 card->num_dapm_widgets);
1741 /* initialise the sound card only once */
1743 ret = card->probe(card);
1745 goto card_probe_error;
1748 /* probe all components used by DAI links on this card */
1749 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1751 for (i = 0; i < card->num_links; i++) {
1752 ret = soc_probe_link_components(card, i, order);
1755 "ASoC: failed to instantiate card %d\n",
1762 /* probe all DAI links on this card */
1763 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1765 for (i = 0; i < card->num_links; i++) {
1766 ret = soc_probe_link_dais(card, i, order);
1769 "ASoC: failed to instantiate card %d\n",
1776 for (i = 0; i < card->num_aux_devs; i++) {
1777 ret = soc_probe_aux_dev(card, i);
1780 "ASoC: failed to add auxiliary devices %d\n",
1782 goto probe_aux_dev_err;
1786 snd_soc_dapm_link_dai_widgets(card);
1787 snd_soc_dapm_connect_dai_link_widgets(card);
1790 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1792 if (card->dapm_routes)
1793 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1794 card->num_dapm_routes);
1796 for (i = 0; i < card->num_links; i++) {
1797 dai_link = &card->dai_link[i];
1798 dai_fmt = dai_link->dai_fmt;
1801 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1803 if (ret != 0 && ret != -ENOTSUPP)
1804 dev_warn(card->rtd[i].codec_dai->dev,
1805 "ASoC: Failed to set DAI format: %d\n",
1809 /* If this is a regular CPU link there will be a platform */
1811 (dai_link->platform_name || dai_link->platform_of_node)) {
1812 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1814 if (ret != 0 && ret != -ENOTSUPP)
1815 dev_warn(card->rtd[i].cpu_dai->dev,
1816 "ASoC: Failed to set DAI format: %d\n",
1818 } else if (dai_fmt) {
1819 /* Flip the polarity for the "CPU" end */
1820 dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
1821 switch (dai_link->dai_fmt &
1822 SND_SOC_DAIFMT_MASTER_MASK) {
1823 case SND_SOC_DAIFMT_CBM_CFM:
1824 dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1826 case SND_SOC_DAIFMT_CBM_CFS:
1827 dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1829 case SND_SOC_DAIFMT_CBS_CFM:
1830 dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1832 case SND_SOC_DAIFMT_CBS_CFS:
1833 dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1837 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1839 if (ret != 0 && ret != -ENOTSUPP)
1840 dev_warn(card->rtd[i].cpu_dai->dev,
1841 "ASoC: Failed to set DAI format: %d\n",
1846 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1848 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1849 "%s", card->long_name ? card->long_name : card->name);
1850 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1851 "%s", card->driver_name ? card->driver_name : card->name);
1852 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1853 switch (card->snd_card->driver[i]) {
1859 if (!isalnum(card->snd_card->driver[i]))
1860 card->snd_card->driver[i] = '_';
1865 if (card->late_probe) {
1866 ret = card->late_probe(card);
1868 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
1870 goto probe_aux_dev_err;
1874 if (card->fully_routed)
1875 list_for_each_entry(codec, &card->codec_dev_list, card_list)
1876 snd_soc_dapm_auto_nc_codec_pins(codec);
1878 snd_soc_dapm_new_widgets(card);
1880 ret = snd_card_register(card->snd_card);
1882 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
1884 goto probe_aux_dev_err;
1887 #ifdef CONFIG_SND_SOC_AC97_BUS
1888 /* register any AC97 codecs */
1889 for (i = 0; i < card->num_rtd; i++) {
1890 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1893 "ASoC: failed to register AC97: %d\n", ret);
1895 soc_unregister_ac97_dai_link(&card->rtd[i]);
1896 goto probe_aux_dev_err;
1901 card->instantiated = 1;
1902 snd_soc_dapm_sync(&card->dapm);
1903 mutex_unlock(&card->mutex);
1908 for (i = 0; i < card->num_aux_devs; i++)
1909 soc_remove_aux_dev(card, i);
1912 soc_remove_dai_links(card);
1918 snd_card_free(card->snd_card);
1921 mutex_unlock(&card->mutex);
1926 /* probes a new socdev */
1927 static int soc_probe(struct platform_device *pdev)
1929 struct snd_soc_card *card = platform_get_drvdata(pdev);
1932 * no card, so machine driver should be registering card
1933 * we should not be here in that case so ret error
1938 dev_warn(&pdev->dev,
1939 "ASoC: machine %s should use snd_soc_register_card()\n",
1942 /* Bodge while we unpick instantiation */
1943 card->dev = &pdev->dev;
1945 return snd_soc_register_card(card);
1948 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1952 /* make sure any delayed work runs */
1953 for (i = 0; i < card->num_rtd; i++) {
1954 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1955 flush_delayed_work(&rtd->delayed_work);
1958 /* remove auxiliary devices */
1959 for (i = 0; i < card->num_aux_devs; i++)
1960 soc_remove_aux_dev(card, i);
1962 /* remove and free each DAI */
1963 soc_remove_dai_links(card);
1965 soc_cleanup_card_debugfs(card);
1967 /* remove the card */
1971 snd_soc_dapm_free(&card->dapm);
1973 snd_card_free(card->snd_card);
1978 /* removes a socdev */
1979 static int soc_remove(struct platform_device *pdev)
1981 struct snd_soc_card *card = platform_get_drvdata(pdev);
1983 snd_soc_unregister_card(card);
1987 int snd_soc_poweroff(struct device *dev)
1989 struct snd_soc_card *card = dev_get_drvdata(dev);
1992 if (!card->instantiated)
1995 /* Flush out pmdown_time work - we actually do want to run it
1996 * now, we're shutting down so no imminent restart. */
1997 for (i = 0; i < card->num_rtd; i++) {
1998 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1999 flush_delayed_work(&rtd->delayed_work);
2002 snd_soc_dapm_shutdown(card);
2004 /* deactivate pins to sleep state */
2005 for (i = 0; i < card->num_rtd; i++) {
2006 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
2007 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
2008 pinctrl_pm_select_sleep_state(codec_dai->dev);
2009 pinctrl_pm_select_sleep_state(cpu_dai->dev);
2014 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
2016 const struct dev_pm_ops snd_soc_pm_ops = {
2017 .suspend = snd_soc_suspend,
2018 .resume = snd_soc_resume,
2019 .freeze = snd_soc_suspend,
2020 .thaw = snd_soc_resume,
2021 .poweroff = snd_soc_poweroff,
2022 .restore = snd_soc_resume,
2024 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
2026 /* ASoC platform driver */
2027 static struct platform_driver soc_driver = {
2029 .name = "soc-audio",
2030 .owner = THIS_MODULE,
2031 .pm = &snd_soc_pm_ops,
2034 .remove = soc_remove,
2038 * snd_soc_new_ac97_codec - initailise AC97 device
2039 * @codec: audio codec
2040 * @ops: AC97 bus operations
2041 * @num: AC97 codec number
2043 * Initialises AC97 codec resources for use by ad-hoc devices only.
2045 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
2046 struct snd_ac97_bus_ops *ops, int num)
2048 mutex_lock(&codec->mutex);
2050 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2051 if (codec->ac97 == NULL) {
2052 mutex_unlock(&codec->mutex);
2056 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
2057 if (codec->ac97->bus == NULL) {
2060 mutex_unlock(&codec->mutex);
2064 codec->ac97->bus->ops = ops;
2065 codec->ac97->num = num;
2068 * Mark the AC97 device to be created by us. This way we ensure that the
2069 * device will be registered with the device subsystem later on.
2071 codec->ac97_created = 1;
2073 mutex_unlock(&codec->mutex);
2076 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
2078 static struct snd_ac97_reset_cfg snd_ac97_rst_cfg;
2080 static void snd_soc_ac97_warm_reset(struct snd_ac97 *ac97)
2082 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2084 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_warm_reset);
2086 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 1);
2090 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2092 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2096 static void snd_soc_ac97_reset(struct snd_ac97 *ac97)
2098 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2100 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_reset);
2102 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2103 gpio_direction_output(snd_ac97_rst_cfg.gpio_sdata, 0);
2104 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 0);
2108 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 1);
2110 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2114 static int snd_soc_ac97_parse_pinctl(struct device *dev,
2115 struct snd_ac97_reset_cfg *cfg)
2118 struct pinctrl_state *state;
2122 p = devm_pinctrl_get(dev);
2124 dev_err(dev, "Failed to get pinctrl\n");
2129 state = pinctrl_lookup_state(p, "ac97-reset");
2130 if (IS_ERR(state)) {
2131 dev_err(dev, "Can't find pinctrl state ac97-reset\n");
2132 return PTR_ERR(state);
2134 cfg->pstate_reset = state;
2136 state = pinctrl_lookup_state(p, "ac97-warm-reset");
2137 if (IS_ERR(state)) {
2138 dev_err(dev, "Can't find pinctrl state ac97-warm-reset\n");
2139 return PTR_ERR(state);
2141 cfg->pstate_warm_reset = state;
2143 state = pinctrl_lookup_state(p, "ac97-running");
2144 if (IS_ERR(state)) {
2145 dev_err(dev, "Can't find pinctrl state ac97-running\n");
2146 return PTR_ERR(state);
2148 cfg->pstate_run = state;
2150 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 0);
2152 dev_err(dev, "Can't find ac97-sync gpio\n");
2155 ret = devm_gpio_request(dev, gpio, "AC97 link sync");
2157 dev_err(dev, "Failed requesting ac97-sync gpio\n");
2160 cfg->gpio_sync = gpio;
2162 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 1);
2164 dev_err(dev, "Can't find ac97-sdata gpio %d\n", gpio);
2167 ret = devm_gpio_request(dev, gpio, "AC97 link sdata");
2169 dev_err(dev, "Failed requesting ac97-sdata gpio\n");
2172 cfg->gpio_sdata = gpio;
2174 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 2);
2176 dev_err(dev, "Can't find ac97-reset gpio\n");
2179 ret = devm_gpio_request(dev, gpio, "AC97 link reset");
2181 dev_err(dev, "Failed requesting ac97-reset gpio\n");
2184 cfg->gpio_reset = gpio;
2189 struct snd_ac97_bus_ops *soc_ac97_ops;
2190 EXPORT_SYMBOL_GPL(soc_ac97_ops);
2192 int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops)
2194 if (ops == soc_ac97_ops)
2197 if (soc_ac97_ops && ops)
2204 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops);
2207 * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions
2209 * This function sets the reset and warm_reset properties of ops and parses
2210 * the device node of pdev to get pinctrl states and gpio numbers to use.
2212 int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops,
2213 struct platform_device *pdev)
2215 struct device *dev = &pdev->dev;
2216 struct snd_ac97_reset_cfg cfg;
2219 ret = snd_soc_ac97_parse_pinctl(dev, &cfg);
2223 ret = snd_soc_set_ac97_ops(ops);
2227 ops->warm_reset = snd_soc_ac97_warm_reset;
2228 ops->reset = snd_soc_ac97_reset;
2230 snd_ac97_rst_cfg = cfg;
2233 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset);
2236 * snd_soc_free_ac97_codec - free AC97 codec device
2237 * @codec: audio codec
2239 * Frees AC97 codec device resources.
2241 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
2243 mutex_lock(&codec->mutex);
2244 #ifdef CONFIG_SND_SOC_AC97_BUS
2245 soc_unregister_ac97_codec(codec);
2247 kfree(codec->ac97->bus);
2250 codec->ac97_created = 0;
2251 mutex_unlock(&codec->mutex);
2253 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
2256 * snd_soc_cnew - create new control
2257 * @_template: control template
2258 * @data: control private data
2259 * @long_name: control long name
2260 * @prefix: control name prefix
2262 * Create a new mixer control from a template control.
2264 * Returns 0 for success, else error.
2266 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2267 void *data, const char *long_name,
2270 struct snd_kcontrol_new template;
2271 struct snd_kcontrol *kcontrol;
2274 memcpy(&template, _template, sizeof(template));
2278 long_name = template.name;
2281 name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
2285 template.name = name;
2287 template.name = long_name;
2290 kcontrol = snd_ctl_new1(&template, data);
2296 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2298 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2299 const struct snd_kcontrol_new *controls, int num_controls,
2300 const char *prefix, void *data)
2304 for (i = 0; i < num_controls; i++) {
2305 const struct snd_kcontrol_new *control = &controls[i];
2306 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2307 control->name, prefix));
2309 dev_err(dev, "ASoC: Failed to add %s: %d\n",
2310 control->name, err);
2318 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
2321 struct snd_card *card = soc_card->snd_card;
2322 struct snd_kcontrol *kctl;
2324 if (unlikely(!name))
2327 list_for_each_entry(kctl, &card->controls, list)
2328 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
2332 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
2335 * snd_soc_add_codec_controls - add an array of controls to a codec.
2336 * Convenience function to add a list of controls. Many codecs were
2337 * duplicating this code.
2339 * @codec: codec to add controls to
2340 * @controls: array of controls to add
2341 * @num_controls: number of elements in the array
2343 * Return 0 for success, else error.
2345 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2346 const struct snd_kcontrol_new *controls, int num_controls)
2348 struct snd_card *card = codec->card->snd_card;
2350 return snd_soc_add_controls(card, codec->dev, controls, num_controls,
2351 codec->name_prefix, &codec->component);
2353 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2356 * snd_soc_add_platform_controls - add an array of controls to a platform.
2357 * Convenience function to add a list of controls.
2359 * @platform: platform to add controls to
2360 * @controls: array of controls to add
2361 * @num_controls: number of elements in the array
2363 * Return 0 for success, else error.
2365 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2366 const struct snd_kcontrol_new *controls, int num_controls)
2368 struct snd_card *card = platform->card->snd_card;
2370 return snd_soc_add_controls(card, platform->dev, controls, num_controls,
2371 NULL, &platform->component);
2373 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2376 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2377 * Convenience function to add a list of controls.
2379 * @soc_card: SoC card to add controls to
2380 * @controls: array of controls to add
2381 * @num_controls: number of elements in the array
2383 * Return 0 for success, else error.
2385 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2386 const struct snd_kcontrol_new *controls, int num_controls)
2388 struct snd_card *card = soc_card->snd_card;
2390 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2393 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2396 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2397 * Convienience function to add a list of controls.
2399 * @dai: DAI to add controls to
2400 * @controls: array of controls to add
2401 * @num_controls: number of elements in the array
2403 * Return 0 for success, else error.
2405 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2406 const struct snd_kcontrol_new *controls, int num_controls)
2408 struct snd_card *card = dai->card->snd_card;
2410 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2413 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2416 * snd_soc_info_enum_double - enumerated double mixer info callback
2417 * @kcontrol: mixer control
2418 * @uinfo: control element information
2420 * Callback to provide information about a double enumerated
2423 * Returns 0 for success.
2425 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2426 struct snd_ctl_elem_info *uinfo)
2428 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2430 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2431 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2432 uinfo->value.enumerated.items = e->items;
2434 if (uinfo->value.enumerated.item >= e->items)
2435 uinfo->value.enumerated.item = e->items - 1;
2436 strlcpy(uinfo->value.enumerated.name,
2437 e->texts[uinfo->value.enumerated.item],
2438 sizeof(uinfo->value.enumerated.name));
2441 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2444 * snd_soc_get_enum_double - enumerated double mixer get callback
2445 * @kcontrol: mixer control
2446 * @ucontrol: control element information
2448 * Callback to get the value of a double enumerated mixer.
2450 * Returns 0 for success.
2452 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2453 struct snd_ctl_elem_value *ucontrol)
2455 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2456 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2457 unsigned int val, item;
2458 unsigned int reg_val;
2461 ret = snd_soc_component_read(component, e->reg, ®_val);
2464 val = (reg_val >> e->shift_l) & e->mask;
2465 item = snd_soc_enum_val_to_item(e, val);
2466 ucontrol->value.enumerated.item[0] = item;
2467 if (e->shift_l != e->shift_r) {
2468 val = (reg_val >> e->shift_l) & e->mask;
2469 item = snd_soc_enum_val_to_item(e, val);
2470 ucontrol->value.enumerated.item[1] = item;
2475 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2478 * snd_soc_put_enum_double - enumerated double mixer put callback
2479 * @kcontrol: mixer control
2480 * @ucontrol: control element information
2482 * Callback to set the value of a double enumerated mixer.
2484 * Returns 0 for success.
2486 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2487 struct snd_ctl_elem_value *ucontrol)
2489 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2490 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2491 unsigned int *item = ucontrol->value.enumerated.item;
2495 if (item[0] >= e->items)
2497 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
2498 mask = e->mask << e->shift_l;
2499 if (e->shift_l != e->shift_r) {
2500 if (item[1] >= e->items)
2502 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
2503 mask |= e->mask << e->shift_r;
2506 return snd_soc_component_update_bits(component, e->reg, mask, val);
2508 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2511 * snd_soc_read_signed - Read a codec register and interprete as signed value
2512 * @component: component
2513 * @reg: Register to read
2514 * @mask: Mask to use after shifting the register value
2515 * @shift: Right shift of register value
2516 * @sign_bit: Bit that describes if a number is negative or not.
2517 * @signed_val: Pointer to where the read value should be stored
2519 * This functions reads a codec register. The register value is shifted right
2520 * by 'shift' bits and masked with the given 'mask'. Afterwards it translates
2521 * the given registervalue into a signed integer if sign_bit is non-zero.
2523 * Returns 0 on sucess, otherwise an error value
2525 static int snd_soc_read_signed(struct snd_soc_component *component,
2526 unsigned int reg, unsigned int mask, unsigned int shift,
2527 unsigned int sign_bit, int *signed_val)
2532 ret = snd_soc_component_read(component, reg, &val);
2536 val = (val >> shift) & mask;
2543 /* non-negative number */
2544 if (!(val & BIT(sign_bit))) {
2552 * The register most probably does not contain a full-sized int.
2553 * Instead we have an arbitrary number of bits in a signed
2554 * representation which has to be translated into a full-sized int.
2555 * This is done by filling up all bits above the sign-bit.
2557 ret |= ~((int)(BIT(sign_bit) - 1));
2565 * snd_soc_info_volsw - single mixer info callback
2566 * @kcontrol: mixer control
2567 * @uinfo: control element information
2569 * Callback to provide information about a single mixer control, or a double
2570 * mixer control that spans 2 registers.
2572 * Returns 0 for success.
2574 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2575 struct snd_ctl_elem_info *uinfo)
2577 struct soc_mixer_control *mc =
2578 (struct soc_mixer_control *)kcontrol->private_value;
2581 if (!mc->platform_max)
2582 mc->platform_max = mc->max;
2583 platform_max = mc->platform_max;
2585 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2586 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2588 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2590 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2591 uinfo->value.integer.min = 0;
2592 uinfo->value.integer.max = platform_max - mc->min;
2595 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2598 * snd_soc_get_volsw - single mixer get callback
2599 * @kcontrol: mixer control
2600 * @ucontrol: control element information
2602 * Callback to get the value of a single mixer control, or a double mixer
2603 * control that spans 2 registers.
2605 * Returns 0 for success.
2607 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2608 struct snd_ctl_elem_value *ucontrol)
2610 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2611 struct soc_mixer_control *mc =
2612 (struct soc_mixer_control *)kcontrol->private_value;
2613 unsigned int reg = mc->reg;
2614 unsigned int reg2 = mc->rreg;
2615 unsigned int shift = mc->shift;
2616 unsigned int rshift = mc->rshift;
2619 int sign_bit = mc->sign_bit;
2620 unsigned int mask = (1 << fls(max)) - 1;
2621 unsigned int invert = mc->invert;
2626 mask = BIT(sign_bit + 1) - 1;
2628 ret = snd_soc_read_signed(component, reg, mask, shift, sign_bit, &val);
2632 ucontrol->value.integer.value[0] = val - min;
2634 ucontrol->value.integer.value[0] =
2635 max - ucontrol->value.integer.value[0];
2637 if (snd_soc_volsw_is_stereo(mc)) {
2639 ret = snd_soc_read_signed(component, reg, mask, rshift,
2642 ret = snd_soc_read_signed(component, reg2, mask, shift,
2647 ucontrol->value.integer.value[1] = val - min;
2649 ucontrol->value.integer.value[1] =
2650 max - ucontrol->value.integer.value[1];
2655 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2658 * snd_soc_put_volsw - single mixer put callback
2659 * @kcontrol: mixer control
2660 * @ucontrol: control element information
2662 * Callback to set the value of a single mixer control, or a double mixer
2663 * control that spans 2 registers.
2665 * Returns 0 for success.
2667 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2668 struct snd_ctl_elem_value *ucontrol)
2670 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2671 struct soc_mixer_control *mc =
2672 (struct soc_mixer_control *)kcontrol->private_value;
2673 unsigned int reg = mc->reg;
2674 unsigned int reg2 = mc->rreg;
2675 unsigned int shift = mc->shift;
2676 unsigned int rshift = mc->rshift;
2679 unsigned int sign_bit = mc->sign_bit;
2680 unsigned int mask = (1 << fls(max)) - 1;
2681 unsigned int invert = mc->invert;
2683 bool type_2r = false;
2684 unsigned int val2 = 0;
2685 unsigned int val, val_mask;
2688 mask = BIT(sign_bit + 1) - 1;
2690 val = ((ucontrol->value.integer.value[0] + min) & mask);
2693 val_mask = mask << shift;
2695 if (snd_soc_volsw_is_stereo(mc)) {
2696 val2 = ((ucontrol->value.integer.value[1] + min) & mask);
2700 val_mask |= mask << rshift;
2701 val |= val2 << rshift;
2703 val2 = val2 << shift;
2707 err = snd_soc_component_update_bits(component, reg, val_mask, val);
2712 err = snd_soc_component_update_bits(component, reg2, val_mask,
2717 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2720 * snd_soc_get_volsw_sx - single mixer get callback
2721 * @kcontrol: mixer control
2722 * @ucontrol: control element information
2724 * Callback to get the value of a single mixer control, or a double mixer
2725 * control that spans 2 registers.
2727 * Returns 0 for success.
2729 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
2730 struct snd_ctl_elem_value *ucontrol)
2732 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2733 struct soc_mixer_control *mc =
2734 (struct soc_mixer_control *)kcontrol->private_value;
2735 unsigned int reg = mc->reg;
2736 unsigned int reg2 = mc->rreg;
2737 unsigned int shift = mc->shift;
2738 unsigned int rshift = mc->rshift;
2741 int mask = (1 << (fls(min + max) - 1)) - 1;
2745 ret = snd_soc_component_read(component, reg, &val);
2749 ucontrol->value.integer.value[0] = ((val >> shift) - min) & mask;
2751 if (snd_soc_volsw_is_stereo(mc)) {
2752 ret = snd_soc_component_read(component, reg2, &val);
2756 val = ((val >> rshift) - min) & mask;
2757 ucontrol->value.integer.value[1] = val;
2762 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
2765 * snd_soc_put_volsw_sx - double mixer set callback
2766 * @kcontrol: mixer control
2767 * @uinfo: control element information
2769 * Callback to set the value of a double mixer control that spans 2 registers.
2771 * Returns 0 for success.
2773 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
2774 struct snd_ctl_elem_value *ucontrol)
2776 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2777 struct soc_mixer_control *mc =
2778 (struct soc_mixer_control *)kcontrol->private_value;
2780 unsigned int reg = mc->reg;
2781 unsigned int reg2 = mc->rreg;
2782 unsigned int shift = mc->shift;
2783 unsigned int rshift = mc->rshift;
2786 int mask = (1 << (fls(min + max) - 1)) - 1;
2788 unsigned int val, val_mask, val2 = 0;
2790 val_mask = mask << shift;
2791 val = (ucontrol->value.integer.value[0] + min) & mask;
2794 err = snd_soc_component_update_bits(component, reg, val_mask, val);
2798 if (snd_soc_volsw_is_stereo(mc)) {
2799 val_mask = mask << rshift;
2800 val2 = (ucontrol->value.integer.value[1] + min) & mask;
2801 val2 = val2 << rshift;
2803 err = snd_soc_component_update_bits(component, reg2, val_mask,
2808 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
2811 * snd_soc_info_volsw_s8 - signed mixer info callback
2812 * @kcontrol: mixer control
2813 * @uinfo: control element information
2815 * Callback to provide information about a signed mixer control.
2817 * Returns 0 for success.
2819 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2820 struct snd_ctl_elem_info *uinfo)
2822 struct soc_mixer_control *mc =
2823 (struct soc_mixer_control *)kcontrol->private_value;
2827 if (!mc->platform_max)
2828 mc->platform_max = mc->max;
2829 platform_max = mc->platform_max;
2831 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2833 uinfo->value.integer.min = 0;
2834 uinfo->value.integer.max = platform_max - min;
2837 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2840 * snd_soc_get_volsw_s8 - signed mixer get callback
2841 * @kcontrol: mixer control
2842 * @ucontrol: control element information
2844 * Callback to get the value of a signed mixer control.
2846 * Returns 0 for success.
2848 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2849 struct snd_ctl_elem_value *ucontrol)
2851 struct soc_mixer_control *mc =
2852 (struct soc_mixer_control *)kcontrol->private_value;
2853 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2854 unsigned int reg = mc->reg;
2859 ret = snd_soc_component_read(component, reg, &val);
2863 ucontrol->value.integer.value[0] =
2864 ((signed char)(val & 0xff))-min;
2865 ucontrol->value.integer.value[1] =
2866 ((signed char)((val >> 8) & 0xff))-min;
2869 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2872 * snd_soc_put_volsw_sgn - signed mixer put callback
2873 * @kcontrol: mixer control
2874 * @ucontrol: control element information
2876 * Callback to set the value of a signed mixer control.
2878 * Returns 0 for success.
2880 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2881 struct snd_ctl_elem_value *ucontrol)
2883 struct soc_mixer_control *mc =
2884 (struct soc_mixer_control *)kcontrol->private_value;
2885 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2886 unsigned int reg = mc->reg;
2890 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2891 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2893 return snd_soc_component_update_bits(component, reg, 0xffff, val);
2895 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2898 * snd_soc_info_volsw_range - single mixer info callback with range.
2899 * @kcontrol: mixer control
2900 * @uinfo: control element information
2902 * Callback to provide information, within a range, about a single
2905 * returns 0 for success.
2907 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
2908 struct snd_ctl_elem_info *uinfo)
2910 struct soc_mixer_control *mc =
2911 (struct soc_mixer_control *)kcontrol->private_value;
2915 if (!mc->platform_max)
2916 mc->platform_max = mc->max;
2917 platform_max = mc->platform_max;
2919 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2920 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2921 uinfo->value.integer.min = 0;
2922 uinfo->value.integer.max = platform_max - min;
2926 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
2929 * snd_soc_put_volsw_range - single mixer put value callback with range.
2930 * @kcontrol: mixer control
2931 * @ucontrol: control element information
2933 * Callback to set the value, within a range, for a single mixer control.
2935 * Returns 0 for success.
2937 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
2938 struct snd_ctl_elem_value *ucontrol)
2940 struct soc_mixer_control *mc =
2941 (struct soc_mixer_control *)kcontrol->private_value;
2942 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2943 unsigned int reg = mc->reg;
2944 unsigned int rreg = mc->rreg;
2945 unsigned int shift = mc->shift;
2948 unsigned int mask = (1 << fls(max)) - 1;
2949 unsigned int invert = mc->invert;
2950 unsigned int val, val_mask;
2953 val = ((ucontrol->value.integer.value[0] + min) & mask);
2956 val_mask = mask << shift;
2959 ret = snd_soc_component_update_bits(component, reg, val_mask, val);
2963 if (snd_soc_volsw_is_stereo(mc)) {
2964 val = ((ucontrol->value.integer.value[1] + min) & mask);
2967 val_mask = mask << shift;
2970 ret = snd_soc_component_update_bits(component, rreg, val_mask,
2976 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
2979 * snd_soc_get_volsw_range - single mixer get callback with range
2980 * @kcontrol: mixer control
2981 * @ucontrol: control element information
2983 * Callback to get the value, within a range, of a single mixer control.
2985 * Returns 0 for success.
2987 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
2988 struct snd_ctl_elem_value *ucontrol)
2990 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2991 struct soc_mixer_control *mc =
2992 (struct soc_mixer_control *)kcontrol->private_value;
2993 unsigned int reg = mc->reg;
2994 unsigned int rreg = mc->rreg;
2995 unsigned int shift = mc->shift;
2998 unsigned int mask = (1 << fls(max)) - 1;
2999 unsigned int invert = mc->invert;
3003 ret = snd_soc_component_read(component, reg, &val);
3007 ucontrol->value.integer.value[0] = (val >> shift) & mask;
3009 ucontrol->value.integer.value[0] =
3010 max - ucontrol->value.integer.value[0];
3011 ucontrol->value.integer.value[0] =
3012 ucontrol->value.integer.value[0] - min;
3014 if (snd_soc_volsw_is_stereo(mc)) {
3015 ret = snd_soc_component_read(component, rreg, &val);
3019 ucontrol->value.integer.value[1] = (val >> shift) & mask;
3021 ucontrol->value.integer.value[1] =
3022 max - ucontrol->value.integer.value[1];
3023 ucontrol->value.integer.value[1] =
3024 ucontrol->value.integer.value[1] - min;
3029 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
3032 * snd_soc_limit_volume - Set new limit to an existing volume control.
3034 * @codec: where to look for the control
3035 * @name: Name of the control
3036 * @max: new maximum limit
3038 * Return 0 for success, else error.
3040 int snd_soc_limit_volume(struct snd_soc_codec *codec,
3041 const char *name, int max)
3043 struct snd_card *card = codec->card->snd_card;
3044 struct snd_kcontrol *kctl;
3045 struct soc_mixer_control *mc;
3049 /* Sanity check for name and max */
3050 if (unlikely(!name || max <= 0))
3053 list_for_each_entry(kctl, &card->controls, list) {
3054 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
3060 mc = (struct soc_mixer_control *)kctl->private_value;
3061 if (max <= mc->max) {
3062 mc->platform_max = max;
3068 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
3070 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
3071 struct snd_ctl_elem_info *uinfo)
3073 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3074 struct soc_bytes *params = (void *)kcontrol->private_value;
3076 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
3077 uinfo->count = params->num_regs * component->val_bytes;
3081 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
3083 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
3084 struct snd_ctl_elem_value *ucontrol)
3086 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3087 struct soc_bytes *params = (void *)kcontrol->private_value;
3090 if (component->regmap)
3091 ret = regmap_raw_read(component->regmap, params->base,
3092 ucontrol->value.bytes.data,
3093 params->num_regs * component->val_bytes);
3097 /* Hide any masked bytes to ensure consistent data reporting */
3098 if (ret == 0 && params->mask) {
3099 switch (component->val_bytes) {
3101 ucontrol->value.bytes.data[0] &= ~params->mask;
3104 ((u16 *)(&ucontrol->value.bytes.data))[0]
3105 &= cpu_to_be16(~params->mask);
3108 ((u32 *)(&ucontrol->value.bytes.data))[0]
3109 &= cpu_to_be32(~params->mask);
3118 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
3120 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
3121 struct snd_ctl_elem_value *ucontrol)
3123 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3124 struct soc_bytes *params = (void *)kcontrol->private_value;
3126 unsigned int val, mask;
3129 if (!component->regmap)
3132 len = params->num_regs * component->val_bytes;
3134 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
3139 * If we've got a mask then we need to preserve the register
3140 * bits. We shouldn't modify the incoming data so take a
3144 ret = regmap_read(component->regmap, params->base, &val);
3148 val &= params->mask;
3150 switch (component->val_bytes) {
3152 ((u8 *)data)[0] &= ~params->mask;
3153 ((u8 *)data)[0] |= val;
3156 mask = ~params->mask;
3157 ret = regmap_parse_val(component->regmap,
3162 ((u16 *)data)[0] &= mask;
3164 ret = regmap_parse_val(component->regmap,
3169 ((u16 *)data)[0] |= val;
3172 mask = ~params->mask;
3173 ret = regmap_parse_val(component->regmap,
3178 ((u32 *)data)[0] &= mask;
3180 ret = regmap_parse_val(component->regmap,
3185 ((u32 *)data)[0] |= val;
3193 ret = regmap_raw_write(component->regmap, params->base,
3201 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
3203 int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol,
3204 struct snd_ctl_elem_info *ucontrol)
3206 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
3208 ucontrol->type = SNDRV_CTL_ELEM_TYPE_BYTES;
3209 ucontrol->count = params->max;
3213 EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext);
3216 * snd_soc_info_xr_sx - signed multi register info callback
3217 * @kcontrol: mreg control
3218 * @uinfo: control element information
3220 * Callback to provide information of a control that can
3221 * span multiple codec registers which together
3222 * forms a single signed value in a MSB/LSB manner.
3224 * Returns 0 for success.
3226 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
3227 struct snd_ctl_elem_info *uinfo)
3229 struct soc_mreg_control *mc =
3230 (struct soc_mreg_control *)kcontrol->private_value;
3231 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3233 uinfo->value.integer.min = mc->min;
3234 uinfo->value.integer.max = mc->max;
3238 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
3241 * snd_soc_get_xr_sx - signed multi register get callback
3242 * @kcontrol: mreg control
3243 * @ucontrol: control element information
3245 * Callback to get the value of a control that can span
3246 * multiple codec registers which together forms a single
3247 * signed value in a MSB/LSB manner. The control supports
3248 * specifying total no of bits used to allow for bitfields
3249 * across the multiple codec registers.
3251 * Returns 0 for success.
3253 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
3254 struct snd_ctl_elem_value *ucontrol)
3256 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3257 struct soc_mreg_control *mc =
3258 (struct soc_mreg_control *)kcontrol->private_value;
3259 unsigned int regbase = mc->regbase;
3260 unsigned int regcount = mc->regcount;
3261 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
3262 unsigned int regwmask = (1<<regwshift)-1;
3263 unsigned int invert = mc->invert;
3264 unsigned long mask = (1UL<<mc->nbits)-1;
3268 unsigned int regval;
3272 for (i = 0; i < regcount; i++) {
3273 ret = snd_soc_component_read(component, regbase+i, ®val);
3276 val |= (regval & regwmask) << (regwshift*(regcount-i-1));
3279 if (min < 0 && val > max)
3283 ucontrol->value.integer.value[0] = val;
3287 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
3290 * snd_soc_put_xr_sx - signed multi register get callback
3291 * @kcontrol: mreg control
3292 * @ucontrol: control element information
3294 * Callback to set the value of a control that can span
3295 * multiple codec registers which together forms a single
3296 * signed value in a MSB/LSB manner. The control supports
3297 * specifying total no of bits used to allow for bitfields
3298 * across the multiple codec registers.
3300 * Returns 0 for success.
3302 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
3303 struct snd_ctl_elem_value *ucontrol)
3305 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3306 struct soc_mreg_control *mc =
3307 (struct soc_mreg_control *)kcontrol->private_value;
3308 unsigned int regbase = mc->regbase;
3309 unsigned int regcount = mc->regcount;
3310 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
3311 unsigned int regwmask = (1<<regwshift)-1;
3312 unsigned int invert = mc->invert;
3313 unsigned long mask = (1UL<<mc->nbits)-1;
3315 long val = ucontrol->value.integer.value[0];
3316 unsigned int i, regval, regmask;
3322 for (i = 0; i < regcount; i++) {
3323 regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
3324 regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
3325 err = snd_soc_component_update_bits(component, regbase+i,
3333 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
3336 * snd_soc_get_strobe - strobe get callback
3337 * @kcontrol: mixer control
3338 * @ucontrol: control element information
3340 * Callback get the value of a strobe mixer control.
3342 * Returns 0 for success.
3344 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
3345 struct snd_ctl_elem_value *ucontrol)
3347 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3348 struct soc_mixer_control *mc =
3349 (struct soc_mixer_control *)kcontrol->private_value;
3350 unsigned int reg = mc->reg;
3351 unsigned int shift = mc->shift;
3352 unsigned int mask = 1 << shift;
3353 unsigned int invert = mc->invert != 0;
3357 ret = snd_soc_component_read(component, reg, &val);
3363 if (shift != 0 && val != 0)
3365 ucontrol->value.enumerated.item[0] = val ^ invert;
3369 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
3372 * snd_soc_put_strobe - strobe put callback
3373 * @kcontrol: mixer control
3374 * @ucontrol: control element information
3376 * Callback strobe a register bit to high then low (or the inverse)
3377 * in one pass of a single mixer enum control.
3379 * Returns 1 for success.
3381 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
3382 struct snd_ctl_elem_value *ucontrol)
3384 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3385 struct soc_mixer_control *mc =
3386 (struct soc_mixer_control *)kcontrol->private_value;
3387 unsigned int reg = mc->reg;
3388 unsigned int shift = mc->shift;
3389 unsigned int mask = 1 << shift;
3390 unsigned int invert = mc->invert != 0;
3391 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
3392 unsigned int val1 = (strobe ^ invert) ? mask : 0;
3393 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
3396 err = snd_soc_component_update_bits(component, reg, mask, val1);
3400 return snd_soc_component_update_bits(component, reg, mask, val2);
3402 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);
3405 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3407 * @clk_id: DAI specific clock ID
3408 * @freq: new clock frequency in Hz
3409 * @dir: new clock direction - input/output.
3411 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3413 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
3414 unsigned int freq, int dir)
3416 if (dai->driver && dai->driver->ops->set_sysclk)
3417 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
3418 else if (dai->codec && dai->codec->driver->set_sysclk)
3419 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
3424 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
3427 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3429 * @clk_id: DAI specific clock ID
3430 * @source: Source for the clock
3431 * @freq: new clock frequency in Hz
3432 * @dir: new clock direction - input/output.
3434 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3436 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
3437 int source, unsigned int freq, int dir)
3439 if (codec->driver->set_sysclk)
3440 return codec->driver->set_sysclk(codec, clk_id, source,
3445 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
3448 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3450 * @div_id: DAI specific clock divider ID
3451 * @div: new clock divisor.
3453 * Configures the clock dividers. This is used to derive the best DAI bit and
3454 * frame clocks from the system or master clock. It's best to set the DAI bit
3455 * and frame clocks as low as possible to save system power.
3457 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
3458 int div_id, int div)
3460 if (dai->driver && dai->driver->ops->set_clkdiv)
3461 return dai->driver->ops->set_clkdiv(dai, div_id, div);
3465 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
3468 * snd_soc_dai_set_pll - configure DAI PLL.
3470 * @pll_id: DAI specific PLL ID
3471 * @source: DAI specific source for the PLL
3472 * @freq_in: PLL input clock frequency in Hz
3473 * @freq_out: requested PLL output clock frequency in Hz
3475 * Configures and enables PLL to generate output clock based on input clock.
3477 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
3478 unsigned int freq_in, unsigned int freq_out)
3480 if (dai->driver && dai->driver->ops->set_pll)
3481 return dai->driver->ops->set_pll(dai, pll_id, source,
3483 else if (dai->codec && dai->codec->driver->set_pll)
3484 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
3489 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
3492 * snd_soc_codec_set_pll - configure codec PLL.
3494 * @pll_id: DAI specific PLL ID
3495 * @source: DAI specific source for the PLL
3496 * @freq_in: PLL input clock frequency in Hz
3497 * @freq_out: requested PLL output clock frequency in Hz
3499 * Configures and enables PLL to generate output clock based on input clock.
3501 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
3502 unsigned int freq_in, unsigned int freq_out)
3504 if (codec->driver->set_pll)
3505 return codec->driver->set_pll(codec, pll_id, source,
3510 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
3513 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
3515 * @ratio Ratio of BCLK to Sample rate.
3517 * Configures the DAI for a preset BCLK to sample rate ratio.
3519 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
3521 if (dai->driver && dai->driver->ops->set_bclk_ratio)
3522 return dai->driver->ops->set_bclk_ratio(dai, ratio);
3526 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);
3529 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3531 * @fmt: SND_SOC_DAIFMT_ format value.
3533 * Configures the DAI hardware format and clocking.
3535 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
3537 if (dai->driver == NULL)
3539 if (dai->driver->ops->set_fmt == NULL)
3541 return dai->driver->ops->set_fmt(dai, fmt);
3543 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
3546 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
3547 * @slots: Number of slots in use.
3548 * @tx_mask: bitmask representing active TX slots.
3549 * @rx_mask: bitmask representing active RX slots.
3551 * Generates the TDM tx and rx slot default masks for DAI.
3553 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
3554 unsigned int *tx_mask,
3555 unsigned int *rx_mask)
3557 if (*tx_mask || *rx_mask)
3563 *tx_mask = (1 << slots) - 1;
3564 *rx_mask = (1 << slots) - 1;
3570 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3572 * @tx_mask: bitmask representing active TX slots.
3573 * @rx_mask: bitmask representing active RX slots.
3574 * @slots: Number of slots in use.
3575 * @slot_width: Width in bits for each slot.
3577 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3580 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
3581 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3583 if (dai->driver && dai->driver->ops->xlate_tdm_slot_mask)
3584 dai->driver->ops->xlate_tdm_slot_mask(slots,
3585 &tx_mask, &rx_mask);
3587 snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
3589 if (dai->driver && dai->driver->ops->set_tdm_slot)
3590 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3595 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3598 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3600 * @tx_num: how many TX channels
3601 * @tx_slot: pointer to an array which imply the TX slot number channel
3603 * @rx_num: how many RX channels
3604 * @rx_slot: pointer to an array which imply the RX slot number channel
3607 * configure the relationship between channel number and TDM slot number.
3609 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3610 unsigned int tx_num, unsigned int *tx_slot,
3611 unsigned int rx_num, unsigned int *rx_slot)
3613 if (dai->driver && dai->driver->ops->set_channel_map)
3614 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3619 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3622 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3624 * @tristate: tristate enable
3626 * Tristates the DAI so that others can use it.
3628 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3630 if (dai->driver && dai->driver->ops->set_tristate)
3631 return dai->driver->ops->set_tristate(dai, tristate);
3635 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3638 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3640 * @mute: mute enable
3641 * @direction: stream to mute
3643 * Mutes the DAI DAC.
3645 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
3651 if (dai->driver->ops->mute_stream)
3652 return dai->driver->ops->mute_stream(dai, mute, direction);
3653 else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
3654 dai->driver->ops->digital_mute)
3655 return dai->driver->ops->digital_mute(dai, mute);
3659 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3662 * snd_soc_register_card - Register a card with the ASoC core
3664 * @card: Card to register
3667 int snd_soc_register_card(struct snd_soc_card *card)
3671 if (!card->name || !card->dev)
3674 for (i = 0; i < card->num_links; i++) {
3675 struct snd_soc_dai_link *link = &card->dai_link[i];
3678 * Codec must be specified by 1 of name or OF node,
3679 * not both or neither.
3681 if (!!link->codec_name == !!link->codec_of_node) {
3683 "ASoC: Neither/both codec name/of_node are set for %s\n",
3687 /* Codec DAI name must be specified */
3688 if (!link->codec_dai_name) {
3690 "ASoC: codec_dai_name not set for %s\n",
3696 * Platform may be specified by either name or OF node, but
3697 * can be left unspecified, and a dummy platform will be used.
3699 if (link->platform_name && link->platform_of_node) {
3701 "ASoC: Both platform name/of_node are set for %s\n",
3707 * CPU device may be specified by either name or OF node, but
3708 * can be left unspecified, and will be matched based on DAI
3711 if (link->cpu_name && link->cpu_of_node) {
3713 "ASoC: Neither/both cpu name/of_node are set for %s\n",
3718 * At least one of CPU DAI name or CPU device name/node must be
3721 if (!link->cpu_dai_name &&
3722 !(link->cpu_name || link->cpu_of_node)) {
3724 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
3730 dev_set_drvdata(card->dev, card);
3732 snd_soc_initialize_card_lists(card);
3734 soc_init_card_debugfs(card);
3736 card->rtd = devm_kzalloc(card->dev,
3737 sizeof(struct snd_soc_pcm_runtime) *
3738 (card->num_links + card->num_aux_devs),
3740 if (card->rtd == NULL)
3743 card->rtd_aux = &card->rtd[card->num_links];
3745 for (i = 0; i < card->num_links; i++)
3746 card->rtd[i].dai_link = &card->dai_link[i];
3748 INIT_LIST_HEAD(&card->dapm_dirty);
3749 card->instantiated = 0;
3750 mutex_init(&card->mutex);
3751 mutex_init(&card->dapm_mutex);
3753 ret = snd_soc_instantiate_card(card);
3755 soc_cleanup_card_debugfs(card);
3757 /* deactivate pins to sleep state */
3758 for (i = 0; i < card->num_rtd; i++) {
3759 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
3760 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
3761 if (!codec_dai->active)
3762 pinctrl_pm_select_sleep_state(codec_dai->dev);
3763 if (!cpu_dai->active)
3764 pinctrl_pm_select_sleep_state(cpu_dai->dev);
3769 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3772 * snd_soc_unregister_card - Unregister a card with the ASoC core
3774 * @card: Card to unregister
3777 int snd_soc_unregister_card(struct snd_soc_card *card)
3779 if (card->instantiated)
3780 soc_cleanup_card_resources(card);
3781 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
3785 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3788 * Simplify DAI link configuration by removing ".-1" from device names
3789 * and sanitizing names.
3791 static char *fmt_single_name(struct device *dev, int *id)
3793 char *found, name[NAME_SIZE];
3796 if (dev_name(dev) == NULL)
3799 strlcpy(name, dev_name(dev), NAME_SIZE);
3801 /* are we a "%s.%d" name (platform and SPI components) */
3802 found = strstr(name, dev->driver->name);
3805 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3807 /* discard ID from name if ID == -1 */
3809 found[strlen(dev->driver->name)] = '\0';
3813 /* I2C component devices are named "bus-addr" */
3814 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3815 char tmp[NAME_SIZE];
3817 /* create unique ID number from I2C addr and bus */
3818 *id = ((id1 & 0xffff) << 16) + id2;
3820 /* sanitize component name for DAI link creation */
3821 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3822 strlcpy(name, tmp, NAME_SIZE);
3827 return kstrdup(name, GFP_KERNEL);
3831 * Simplify DAI link naming for single devices with multiple DAIs by removing
3832 * any ".-1" and using the DAI name (instead of device name).
3834 static inline char *fmt_multiple_name(struct device *dev,
3835 struct snd_soc_dai_driver *dai_drv)
3837 if (dai_drv->name == NULL) {
3839 "ASoC: error - multiple DAI %s registered with no name\n",
3844 return kstrdup(dai_drv->name, GFP_KERNEL);
3848 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
3850 * @component: The component for which the DAIs should be unregistered
3852 static void snd_soc_unregister_dais(struct snd_soc_component *component)
3854 struct snd_soc_dai *dai, *_dai;
3856 list_for_each_entry_safe(dai, _dai, &component->dai_list, list) {
3857 dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
3859 list_del(&dai->list);
3866 * snd_soc_register_dais - Register a DAI with the ASoC core
3868 * @component: The component the DAIs are registered for
3869 * @codec: The CODEC that the DAIs are registered for, NULL if the component is
3871 * @dai_drv: DAI driver to use for the DAIs
3872 * @count: Number of DAIs
3873 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
3876 static int snd_soc_register_dais(struct snd_soc_component *component,
3877 struct snd_soc_codec *codec, struct snd_soc_dai_driver *dai_drv,
3878 size_t count, bool legacy_dai_naming)
3880 struct device *dev = component->dev;
3881 struct snd_soc_dai *dai;
3885 dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
3887 for (i = 0; i < count; i++) {
3889 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3896 * Back in the old days when we still had component-less DAIs,
3897 * instead of having a static name, component-less DAIs would
3898 * inherit the name of the parent device so it is possible to
3899 * register multiple instances of the DAI. We still need to keep
3900 * the same naming style even though those DAIs are not
3901 * component-less anymore.
3903 if (count == 1 && legacy_dai_naming) {
3904 dai->name = fmt_single_name(dev, &dai->id);
3906 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3908 dai->id = dai_drv[i].id;
3912 if (dai->name == NULL) {
3918 dai->component = component;
3921 dai->driver = &dai_drv[i];
3922 dai->dapm.dev = dev;
3923 if (!dai->driver->ops)
3924 dai->driver->ops = &null_dai_ops;
3927 dai->dapm.idle_bias_off = 1;
3929 list_add(&dai->list, &component->dai_list);
3931 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
3937 snd_soc_unregister_dais(component);
3943 * snd_soc_register_component - Register a component with the ASoC core
3947 __snd_soc_register_component(struct device *dev,
3948 struct snd_soc_component *cmpnt,
3949 const struct snd_soc_component_driver *cmpnt_drv,
3950 struct snd_soc_codec *codec,
3951 struct snd_soc_dai_driver *dai_drv,
3952 int num_dai, bool allow_single_dai)
3956 dev_dbg(dev, "component register %s\n", dev_name(dev));
3959 dev_err(dev, "ASoC: Failed to connecting component\n");
3963 mutex_init(&cmpnt->io_mutex);
3965 cmpnt->name = fmt_single_name(dev, &cmpnt->id);
3967 dev_err(dev, "ASoC: Failed to simplifying name\n");
3972 cmpnt->driver = cmpnt_drv;
3973 cmpnt->dai_drv = dai_drv;
3974 cmpnt->num_dai = num_dai;
3975 INIT_LIST_HEAD(&cmpnt->dai_list);
3977 ret = snd_soc_register_dais(cmpnt, codec, dai_drv, num_dai,
3980 dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret);
3981 goto error_component_name;
3984 mutex_lock(&client_mutex);
3985 list_add(&cmpnt->list, &component_list);
3986 mutex_unlock(&client_mutex);
3988 dev_dbg(cmpnt->dev, "ASoC: Registered component '%s'\n", cmpnt->name);
3992 error_component_name:
3998 int snd_soc_register_component(struct device *dev,
3999 const struct snd_soc_component_driver *cmpnt_drv,
4000 struct snd_soc_dai_driver *dai_drv,
4003 struct snd_soc_component *cmpnt;
4005 cmpnt = devm_kzalloc(dev, sizeof(*cmpnt), GFP_KERNEL);
4007 dev_err(dev, "ASoC: Failed to allocate memory\n");
4011 cmpnt->ignore_pmdown_time = true;
4012 cmpnt->registered_as_component = true;
4014 return __snd_soc_register_component(dev, cmpnt, cmpnt_drv, NULL,
4015 dai_drv, num_dai, true);
4017 EXPORT_SYMBOL_GPL(snd_soc_register_component);
4019 static void __snd_soc_unregister_component(struct snd_soc_component *cmpnt)
4021 snd_soc_unregister_dais(cmpnt);
4023 mutex_lock(&client_mutex);
4024 list_del(&cmpnt->list);
4025 mutex_unlock(&client_mutex);
4027 dev_dbg(cmpnt->dev, "ASoC: Unregistered component '%s'\n", cmpnt->name);
4032 * snd_soc_unregister_component - Unregister a component from the ASoC core
4035 void snd_soc_unregister_component(struct device *dev)
4037 struct snd_soc_component *cmpnt;
4039 list_for_each_entry(cmpnt, &component_list, list) {
4040 if (dev == cmpnt->dev && cmpnt->registered_as_component)
4046 __snd_soc_unregister_component(cmpnt);
4048 EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
4050 static int snd_soc_platform_drv_write(struct snd_soc_component *component,
4051 unsigned int reg, unsigned int val)
4053 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
4055 return platform->driver->write(platform, reg, val);
4058 static int snd_soc_platform_drv_read(struct snd_soc_component *component,
4059 unsigned int reg, unsigned int *val)
4061 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
4063 *val = platform->driver->read(platform, reg);
4069 * snd_soc_add_platform - Add a platform to the ASoC core
4070 * @dev: The parent device for the platform
4071 * @platform: The platform to add
4072 * @platform_driver: The driver for the platform
4074 int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
4075 const struct snd_soc_platform_driver *platform_drv)
4079 /* create platform component name */
4080 platform->name = fmt_single_name(dev, &platform->id);
4081 if (platform->name == NULL)
4084 platform->dev = dev;
4085 platform->driver = platform_drv;
4086 platform->dapm.dev = dev;
4087 platform->dapm.platform = platform;
4088 platform->dapm.component = &platform->component;
4089 platform->dapm.stream_event = platform_drv->stream_event;
4090 if (platform_drv->write)
4091 platform->component.write = snd_soc_platform_drv_write;
4092 if (platform_drv->read)
4093 platform->component.read = snd_soc_platform_drv_read;
4095 /* register component */
4096 ret = __snd_soc_register_component(dev, &platform->component,
4097 &platform_drv->component_driver,
4098 NULL, NULL, 0, false);
4100 dev_err(platform->component.dev,
4101 "ASoC: Failed to register component: %d\n", ret);
4105 mutex_lock(&client_mutex);
4106 list_add(&platform->list, &platform_list);
4107 mutex_unlock(&client_mutex);
4109 dev_dbg(dev, "ASoC: Registered platform '%s'\n", platform->name);
4113 EXPORT_SYMBOL_GPL(snd_soc_add_platform);
4116 * snd_soc_register_platform - Register a platform with the ASoC core
4118 * @platform: platform to register
4120 int snd_soc_register_platform(struct device *dev,
4121 const struct snd_soc_platform_driver *platform_drv)
4123 struct snd_soc_platform *platform;
4126 dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
4128 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
4129 if (platform == NULL)
4132 ret = snd_soc_add_platform(dev, platform, platform_drv);
4138 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
4141 * snd_soc_remove_platform - Remove a platform from the ASoC core
4142 * @platform: the platform to remove
4144 void snd_soc_remove_platform(struct snd_soc_platform *platform)
4146 __snd_soc_unregister_component(&platform->component);
4148 mutex_lock(&client_mutex);
4149 list_del(&platform->list);
4150 mutex_unlock(&client_mutex);
4152 dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
4154 kfree(platform->name);
4156 EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
4158 struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
4160 struct snd_soc_platform *platform;
4162 list_for_each_entry(platform, &platform_list, list) {
4163 if (dev == platform->dev)
4169 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
4172 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
4174 * @platform: platform to unregister
4176 void snd_soc_unregister_platform(struct device *dev)
4178 struct snd_soc_platform *platform;
4180 platform = snd_soc_lookup_platform(dev);
4184 snd_soc_remove_platform(platform);
4187 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
4189 static u64 codec_format_map[] = {
4190 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
4191 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
4192 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
4193 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
4194 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
4195 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
4196 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4197 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4198 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
4199 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
4200 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
4201 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
4202 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
4203 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
4204 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
4205 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
4208 /* Fix up the DAI formats for endianness: codecs don't actually see
4209 * the endianness of the data but we're using the CPU format
4210 * definitions which do need to include endianness so we ensure that
4211 * codec DAIs always have both big and little endian variants set.
4213 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
4217 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
4218 if (stream->formats & codec_format_map[i])
4219 stream->formats |= codec_format_map[i];
4222 static int snd_soc_codec_drv_write(struct snd_soc_component *component,
4223 unsigned int reg, unsigned int val)
4225 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
4227 return codec->driver->write(codec, reg, val);
4230 static int snd_soc_codec_drv_read(struct snd_soc_component *component,
4231 unsigned int reg, unsigned int *val)
4233 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
4235 *val = codec->driver->read(codec, reg);
4241 * snd_soc_register_codec - Register a codec with the ASoC core
4243 * @codec: codec to register
4245 int snd_soc_register_codec(struct device *dev,
4246 const struct snd_soc_codec_driver *codec_drv,
4247 struct snd_soc_dai_driver *dai_drv,
4250 struct snd_soc_codec *codec;
4251 struct regmap *regmap;
4254 dev_dbg(dev, "codec register %s\n", dev_name(dev));
4256 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
4260 /* create CODEC component name */
4261 codec->name = fmt_single_name(dev, &codec->id);
4262 if (codec->name == NULL) {
4267 if (codec_drv->write)
4268 codec->component.write = snd_soc_codec_drv_write;
4269 if (codec_drv->read)
4270 codec->component.read = snd_soc_codec_drv_read;
4271 codec->component.ignore_pmdown_time = codec_drv->ignore_pmdown_time;
4272 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
4273 codec->dapm.dev = dev;
4274 codec->dapm.codec = codec;
4275 codec->dapm.component = &codec->component;
4276 codec->dapm.seq_notifier = codec_drv->seq_notifier;
4277 codec->dapm.stream_event = codec_drv->stream_event;
4279 codec->driver = codec_drv;
4280 codec->component.val_bytes = codec_drv->reg_word_size;
4281 mutex_init(&codec->mutex);
4283 if (!codec->component.write) {
4284 if (codec_drv->get_regmap)
4285 regmap = codec_drv->get_regmap(dev);
4287 regmap = dev_get_regmap(dev, NULL);
4290 ret = snd_soc_component_init_io(&codec->component,
4294 "Failed to set cache I/O:%d\n",
4301 for (i = 0; i < num_dai; i++) {
4302 fixup_codec_formats(&dai_drv[i].playback);
4303 fixup_codec_formats(&dai_drv[i].capture);
4306 mutex_lock(&client_mutex);
4307 list_add(&codec->list, &codec_list);
4308 mutex_unlock(&client_mutex);
4310 /* register component */
4311 ret = __snd_soc_register_component(dev, &codec->component,
4312 &codec_drv->component_driver,
4313 codec, dai_drv, num_dai, false);
4315 dev_err(codec->dev, "ASoC: Failed to regster component: %d\n", ret);
4316 goto fail_codec_name;
4319 dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n", codec->name);
4323 mutex_lock(&client_mutex);
4324 list_del(&codec->list);
4325 mutex_unlock(&client_mutex);
4332 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
4335 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4337 * @codec: codec to unregister
4339 void snd_soc_unregister_codec(struct device *dev)
4341 struct snd_soc_codec *codec;
4343 list_for_each_entry(codec, &codec_list, list) {
4344 if (dev == codec->dev)
4350 __snd_soc_unregister_component(&codec->component);
4352 mutex_lock(&client_mutex);
4353 list_del(&codec->list);
4354 mutex_unlock(&client_mutex);
4356 dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n", codec->name);
4358 snd_soc_cache_exit(codec);
4362 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
4364 /* Retrieve a card's name from device tree */
4365 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
4366 const char *propname)
4368 struct device_node *np = card->dev->of_node;
4371 ret = of_property_read_string_index(np, propname, 0, &card->name);
4373 * EINVAL means the property does not exist. This is fine providing
4374 * card->name was previously set, which is checked later in
4375 * snd_soc_register_card.
4377 if (ret < 0 && ret != -EINVAL) {
4379 "ASoC: Property '%s' could not be read: %d\n",
4386 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
4388 static const struct snd_soc_dapm_widget simple_widgets[] = {
4389 SND_SOC_DAPM_MIC("Microphone", NULL),
4390 SND_SOC_DAPM_LINE("Line", NULL),
4391 SND_SOC_DAPM_HP("Headphone", NULL),
4392 SND_SOC_DAPM_SPK("Speaker", NULL),
4395 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
4396 const char *propname)
4398 struct device_node *np = card->dev->of_node;
4399 struct snd_soc_dapm_widget *widgets;
4400 const char *template, *wname;
4401 int i, j, num_widgets, ret;
4403 num_widgets = of_property_count_strings(np, propname);
4404 if (num_widgets < 0) {
4406 "ASoC: Property '%s' does not exist\n", propname);
4409 if (num_widgets & 1) {
4411 "ASoC: Property '%s' length is not even\n", propname);
4417 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4422 widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets),
4426 "ASoC: Could not allocate memory for widgets\n");
4430 for (i = 0; i < num_widgets; i++) {
4431 ret = of_property_read_string_index(np, propname,
4435 "ASoC: Property '%s' index %d read error:%d\n",
4436 propname, 2 * i, ret);
4440 for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) {
4441 if (!strncmp(template, simple_widgets[j].name,
4442 strlen(simple_widgets[j].name))) {
4443 widgets[i] = simple_widgets[j];
4448 if (j >= ARRAY_SIZE(simple_widgets)) {
4450 "ASoC: DAPM widget '%s' is not supported\n",
4455 ret = of_property_read_string_index(np, propname,
4460 "ASoC: Property '%s' index %d read error:%d\n",
4461 propname, (2 * i) + 1, ret);
4465 widgets[i].name = wname;
4468 card->dapm_widgets = widgets;
4469 card->num_dapm_widgets = num_widgets;
4473 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets);
4475 int snd_soc_of_parse_tdm_slot(struct device_node *np,
4476 unsigned int *slots,
4477 unsigned int *slot_width)
4482 if (of_property_read_bool(np, "dai-tdm-slot-num")) {
4483 ret = of_property_read_u32(np, "dai-tdm-slot-num", &val);
4491 if (of_property_read_bool(np, "dai-tdm-slot-width")) {
4492 ret = of_property_read_u32(np, "dai-tdm-slot-width", &val);
4502 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot);
4504 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
4505 const char *propname)
4507 struct device_node *np = card->dev->of_node;
4509 struct snd_soc_dapm_route *routes;
4512 num_routes = of_property_count_strings(np, propname);
4513 if (num_routes < 0 || num_routes & 1) {
4515 "ASoC: Property '%s' does not exist or its length is not even\n",
4521 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4526 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
4530 "ASoC: Could not allocate DAPM route table\n");
4534 for (i = 0; i < num_routes; i++) {
4535 ret = of_property_read_string_index(np, propname,
4536 2 * i, &routes[i].sink);
4539 "ASoC: Property '%s' index %d could not be read: %d\n",
4540 propname, 2 * i, ret);
4543 ret = of_property_read_string_index(np, propname,
4544 (2 * i) + 1, &routes[i].source);
4547 "ASoC: Property '%s' index %d could not be read: %d\n",
4548 propname, (2 * i) + 1, ret);
4553 card->num_dapm_routes = num_routes;
4554 card->dapm_routes = routes;
4558 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
4560 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
4565 unsigned int format = 0;
4571 } of_fmt_table[] = {
4572 { "i2s", SND_SOC_DAIFMT_I2S },
4573 { "right_j", SND_SOC_DAIFMT_RIGHT_J },
4574 { "left_j", SND_SOC_DAIFMT_LEFT_J },
4575 { "dsp_a", SND_SOC_DAIFMT_DSP_A },
4576 { "dsp_b", SND_SOC_DAIFMT_DSP_B },
4577 { "ac97", SND_SOC_DAIFMT_AC97 },
4578 { "pdm", SND_SOC_DAIFMT_PDM},
4579 { "msb", SND_SOC_DAIFMT_MSB },
4580 { "lsb", SND_SOC_DAIFMT_LSB },
4587 * check "[prefix]format = xxx"
4588 * SND_SOC_DAIFMT_FORMAT_MASK area
4590 snprintf(prop, sizeof(prop), "%sformat", prefix);
4591 ret = of_property_read_string(np, prop, &str);
4593 for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
4594 if (strcmp(str, of_fmt_table[i].name) == 0) {
4595 format |= of_fmt_table[i].val;
4602 * check "[prefix]continuous-clock"
4603 * SND_SOC_DAIFMT_CLOCK_MASK area
4605 snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
4606 if (of_get_property(np, prop, NULL))
4607 format |= SND_SOC_DAIFMT_CONT;
4609 format |= SND_SOC_DAIFMT_GATED;
4612 * check "[prefix]bitclock-inversion"
4613 * check "[prefix]frame-inversion"
4614 * SND_SOC_DAIFMT_INV_MASK area
4616 snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
4617 bit = !!of_get_property(np, prop, NULL);
4619 snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
4620 frame = !!of_get_property(np, prop, NULL);
4622 switch ((bit << 4) + frame) {
4624 format |= SND_SOC_DAIFMT_IB_IF;
4627 format |= SND_SOC_DAIFMT_IB_NF;
4630 format |= SND_SOC_DAIFMT_NB_IF;
4633 /* SND_SOC_DAIFMT_NB_NF is default */
4638 * check "[prefix]bitclock-master"
4639 * check "[prefix]frame-master"
4640 * SND_SOC_DAIFMT_MASTER_MASK area
4642 snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
4643 bit = !!of_get_property(np, prop, NULL);
4645 snprintf(prop, sizeof(prop), "%sframe-master", prefix);
4646 frame = !!of_get_property(np, prop, NULL);
4648 switch ((bit << 4) + frame) {
4650 format |= SND_SOC_DAIFMT_CBM_CFM;
4653 format |= SND_SOC_DAIFMT_CBM_CFS;
4656 format |= SND_SOC_DAIFMT_CBS_CFM;
4659 format |= SND_SOC_DAIFMT_CBS_CFS;
4665 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
4667 int snd_soc_of_get_dai_name(struct device_node *of_node,
4668 const char **dai_name)
4670 struct snd_soc_component *pos;
4671 struct of_phandle_args args;
4674 ret = of_parse_phandle_with_args(of_node, "sound-dai",
4675 "#sound-dai-cells", 0, &args);
4679 ret = -EPROBE_DEFER;
4681 mutex_lock(&client_mutex);
4682 list_for_each_entry(pos, &component_list, list) {
4683 if (pos->dev->of_node != args.np)
4686 if (pos->driver->of_xlate_dai_name) {
4687 ret = pos->driver->of_xlate_dai_name(pos, &args, dai_name);
4691 switch (args.args_count) {
4693 id = 0; /* same as dai_drv[0] */
4703 if (id < 0 || id >= pos->num_dai) {
4710 *dai_name = pos->dai_drv[id].name;
4712 *dai_name = pos->name;
4717 mutex_unlock(&client_mutex);
4719 of_node_put(args.np);
4723 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
4725 static int __init snd_soc_init(void)
4727 #ifdef CONFIG_DEBUG_FS
4728 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
4729 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
4730 pr_warn("ASoC: Failed to create debugfs directory\n");
4731 snd_soc_debugfs_root = NULL;
4734 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
4736 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4738 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
4740 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4742 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
4743 &platform_list_fops))
4744 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4747 snd_soc_util_init();
4749 return platform_driver_register(&soc_driver);
4751 module_init(snd_soc_init);
4753 static void __exit snd_soc_exit(void)
4755 snd_soc_util_exit();
4757 #ifdef CONFIG_DEBUG_FS
4758 debugfs_remove_recursive(snd_soc_debugfs_root);
4760 platform_driver_unregister(&soc_driver);
4762 module_exit(snd_soc_exit);
4764 /* Module information */
4765 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4766 MODULE_DESCRIPTION("ALSA SoC Core");
4767 MODULE_LICENSE("GPL");
4768 MODULE_ALIAS("platform:soc-audio");