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->of_node && codec->dev->of_node != map->of_node)
1122 if (map->dev_name && strcmp(codec->name, map->dev_name))
1124 codec->name_prefix = map->name_prefix;
1129 static int soc_probe_codec(struct snd_soc_card *card,
1130 struct snd_soc_codec *codec)
1133 const struct snd_soc_codec_driver *driver = codec->driver;
1134 struct snd_soc_dai *dai;
1137 codec->dapm.card = card;
1138 soc_set_name_prefix(card, codec);
1140 if (!try_module_get(codec->dev->driver->owner))
1143 soc_init_codec_debugfs(codec);
1145 if (driver->dapm_widgets) {
1146 ret = snd_soc_dapm_new_controls(&codec->dapm,
1147 driver->dapm_widgets,
1148 driver->num_dapm_widgets);
1152 "Failed to create new controls %d\n", ret);
1157 /* Create DAPM widgets for each DAI stream */
1158 list_for_each_entry(dai, &codec->component.dai_list, list) {
1159 ret = snd_soc_dapm_new_dai_widgets(&codec->dapm, dai);
1163 "Failed to create DAI widgets %d\n", ret);
1168 codec->dapm.idle_bias_off = driver->idle_bias_off;
1170 if (driver->probe) {
1171 ret = driver->probe(codec);
1174 "ASoC: failed to probe CODEC %d\n", ret);
1177 WARN(codec->dapm.idle_bias_off &&
1178 codec->dapm.bias_level != SND_SOC_BIAS_OFF,
1179 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1183 if (driver->controls)
1184 snd_soc_add_codec_controls(codec, driver->controls,
1185 driver->num_controls);
1186 if (driver->dapm_routes)
1187 snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
1188 driver->num_dapm_routes);
1190 /* mark codec as probed and add to card codec list */
1192 list_add(&codec->card_list, &card->codec_dev_list);
1193 list_add(&codec->dapm.list, &card->dapm_list);
1198 soc_cleanup_codec_debugfs(codec);
1199 module_put(codec->dev->driver->owner);
1204 static int soc_probe_platform(struct snd_soc_card *card,
1205 struct snd_soc_platform *platform)
1208 const struct snd_soc_platform_driver *driver = platform->driver;
1209 struct snd_soc_component *component;
1210 struct snd_soc_dai *dai;
1212 platform->card = card;
1213 platform->dapm.card = card;
1215 if (!try_module_get(platform->dev->driver->owner))
1218 soc_init_platform_debugfs(platform);
1220 if (driver->dapm_widgets)
1221 snd_soc_dapm_new_controls(&platform->dapm,
1222 driver->dapm_widgets, driver->num_dapm_widgets);
1224 /* Create DAPM widgets for each DAI stream */
1225 list_for_each_entry(component, &component_list, list) {
1226 if (component->dev != platform->dev)
1228 list_for_each_entry(dai, &component->dai_list, list)
1229 snd_soc_dapm_new_dai_widgets(&platform->dapm, dai);
1232 platform->dapm.idle_bias_off = 1;
1234 if (driver->probe) {
1235 ret = driver->probe(platform);
1237 dev_err(platform->dev,
1238 "ASoC: failed to probe platform %d\n", ret);
1243 if (driver->controls)
1244 snd_soc_add_platform_controls(platform, driver->controls,
1245 driver->num_controls);
1246 if (driver->dapm_routes)
1247 snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
1248 driver->num_dapm_routes);
1250 /* mark platform as probed and add to card platform list */
1251 platform->probed = 1;
1252 list_add(&platform->card_list, &card->platform_dev_list);
1253 list_add(&platform->dapm.list, &card->dapm_list);
1258 soc_cleanup_platform_debugfs(platform);
1259 module_put(platform->dev->driver->owner);
1264 static void rtd_release(struct device *dev)
1269 static int soc_post_component_init(struct snd_soc_card *card,
1270 struct snd_soc_codec *codec,
1271 int num, int dailess)
1273 struct snd_soc_dai_link *dai_link = NULL;
1274 struct snd_soc_aux_dev *aux_dev = NULL;
1275 struct snd_soc_pcm_runtime *rtd;
1280 dai_link = &card->dai_link[num];
1281 rtd = &card->rtd[num];
1282 name = dai_link->name;
1284 aux_dev = &card->aux_dev[num];
1285 rtd = &card->rtd_aux[num];
1286 name = aux_dev->name;
1290 /* do machine specific initialization */
1291 if (!dailess && dai_link->init)
1292 ret = dai_link->init(rtd);
1293 else if (dailess && aux_dev->init)
1294 ret = aux_dev->init(&codec->dapm);
1296 dev_err(card->dev, "ASoC: failed to init %s: %d\n", name, ret);
1300 /* register the rtd device */
1303 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1306 device_initialize(rtd->dev);
1307 rtd->dev->parent = card->dev;
1308 rtd->dev->release = rtd_release;
1309 rtd->dev->init_name = name;
1310 dev_set_drvdata(rtd->dev, rtd);
1311 mutex_init(&rtd->pcm_mutex);
1312 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1313 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1314 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1315 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1316 ret = device_add(rtd->dev);
1318 /* calling put_device() here to free the rtd->dev */
1319 put_device(rtd->dev);
1321 "ASoC: failed to register runtime device: %d\n", ret);
1324 rtd->dev_registered = 1;
1326 /* add DAPM sysfs entries for this codec */
1327 ret = snd_soc_dapm_sys_add(rtd->dev);
1330 "ASoC: failed to add codec dapm sysfs entries: %d\n", ret);
1332 /* add codec sysfs entries */
1333 ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
1336 "ASoC: failed to add codec sysfs files: %d\n", ret);
1338 #ifdef CONFIG_DEBUG_FS
1339 /* add DPCM sysfs entries */
1340 if (!dailess && !dai_link->dynamic)
1343 ret = soc_dpcm_debugfs_add(rtd);
1345 dev_err(rtd->dev, "ASoC: failed to add dpcm sysfs entries: %d\n", ret);
1352 static int soc_probe_link_components(struct snd_soc_card *card, int num,
1355 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1356 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1357 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1358 struct snd_soc_platform *platform = rtd->platform;
1361 /* probe the CPU-side component, if it is a CODEC */
1362 if (cpu_dai->codec &&
1363 !cpu_dai->codec->probed &&
1364 cpu_dai->codec->driver->probe_order == order) {
1365 ret = soc_probe_codec(card, cpu_dai->codec);
1370 /* probe the CODEC-side component */
1371 if (!codec_dai->codec->probed &&
1372 codec_dai->codec->driver->probe_order == order) {
1373 ret = soc_probe_codec(card, codec_dai->codec);
1378 /* probe the platform */
1379 if (!platform->probed &&
1380 platform->driver->probe_order == order) {
1381 ret = soc_probe_platform(card, platform);
1389 static int soc_probe_codec_dai(struct snd_soc_card *card,
1390 struct snd_soc_dai *codec_dai,
1395 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
1396 if (codec_dai->driver->probe) {
1397 ret = codec_dai->driver->probe(codec_dai);
1399 dev_err(codec_dai->dev,
1400 "ASoC: failed to probe CODEC DAI %s: %d\n",
1401 codec_dai->name, ret);
1406 /* mark codec_dai as probed and add to card dai list */
1407 codec_dai->probed = 1;
1413 static int soc_link_dai_widgets(struct snd_soc_card *card,
1414 struct snd_soc_dai_link *dai_link,
1415 struct snd_soc_dai *cpu_dai,
1416 struct snd_soc_dai *codec_dai)
1418 struct snd_soc_dapm_widget *play_w, *capture_w;
1421 /* link the DAI widgets */
1422 play_w = codec_dai->playback_widget;
1423 capture_w = cpu_dai->capture_widget;
1424 if (play_w && capture_w) {
1425 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1428 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1429 play_w->name, capture_w->name, ret);
1434 play_w = cpu_dai->playback_widget;
1435 capture_w = codec_dai->capture_widget;
1436 if (play_w && capture_w) {
1437 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1440 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1441 play_w->name, capture_w->name, ret);
1449 static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
1451 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1452 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1453 struct snd_soc_codec *codec = rtd->codec;
1454 struct snd_soc_platform *platform = rtd->platform;
1455 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1456 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1459 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1460 card->name, num, order);
1462 /* config components */
1463 cpu_dai->platform = platform;
1464 codec_dai->card = card;
1465 cpu_dai->card = card;
1467 /* set default power off timeout */
1468 rtd->pmdown_time = pmdown_time;
1470 /* probe the cpu_dai */
1471 if (!cpu_dai->probed &&
1472 cpu_dai->driver->probe_order == order) {
1473 if (!cpu_dai->codec) {
1474 cpu_dai->dapm.card = card;
1475 if (!try_module_get(cpu_dai->dev->driver->owner))
1478 list_add(&cpu_dai->dapm.list, &card->dapm_list);
1481 if (cpu_dai->driver->probe) {
1482 ret = cpu_dai->driver->probe(cpu_dai);
1484 dev_err(cpu_dai->dev,
1485 "ASoC: failed to probe CPU DAI %s: %d\n",
1486 cpu_dai->name, ret);
1487 module_put(cpu_dai->dev->driver->owner);
1491 cpu_dai->probed = 1;
1494 /* probe the CODEC DAI */
1495 ret = soc_probe_codec_dai(card, codec_dai, order);
1499 /* complete DAI probe during last probe */
1500 if (order != SND_SOC_COMP_ORDER_LAST)
1503 ret = soc_post_component_init(card, codec, num, 0);
1507 ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
1509 dev_warn(rtd->dev, "ASoC: failed to add pmdown_time sysfs: %d\n",
1512 if (cpu_dai->driver->compress_dai) {
1513 /*create compress_device"*/
1514 ret = soc_new_compress(rtd, num);
1516 dev_err(card->dev, "ASoC: can't create compress %s\n",
1517 dai_link->stream_name);
1522 if (!dai_link->params) {
1523 /* create the pcm */
1524 ret = soc_new_pcm(rtd, num);
1526 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1527 dai_link->stream_name, ret);
1531 INIT_DELAYED_WORK(&rtd->delayed_work,
1532 codec2codec_close_delayed_work);
1534 /* link the DAI widgets */
1535 ret = soc_link_dai_widgets(card, dai_link,
1536 cpu_dai, codec_dai);
1542 /* add platform data for AC97 devices */
1543 if (rtd->codec_dai->driver->ac97_control)
1544 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1549 #ifdef CONFIG_SND_SOC_AC97_BUS
1550 static int soc_register_ac97_codec(struct snd_soc_codec *codec,
1551 struct snd_soc_dai *codec_dai)
1555 /* Only instantiate AC97 if not already done by the adaptor
1556 * for the generic AC97 subsystem.
1558 if (codec_dai->driver->ac97_control && !codec->ac97_registered) {
1560 * It is possible that the AC97 device is already registered to
1561 * the device subsystem. This happens when the device is created
1562 * via snd_ac97_mixer(). Currently only SoC codec that does so
1563 * is the generic AC97 glue but others migh emerge.
1565 * In those cases we don't try to register the device again.
1567 if (!codec->ac97_created)
1570 ret = soc_ac97_dev_register(codec);
1573 "ASoC: AC97 device register failed: %d\n", ret);
1577 codec->ac97_registered = 1;
1582 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1584 return soc_register_ac97_codec(rtd->codec, rtd->codec_dai);
1587 static void soc_unregister_ac97_codec(struct snd_soc_codec *codec)
1589 if (codec->ac97_registered) {
1590 soc_ac97_dev_unregister(codec);
1591 codec->ac97_registered = 0;
1595 static void soc_unregister_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1597 soc_unregister_ac97_codec(rtd->codec);
1601 static struct snd_soc_codec *soc_find_matching_codec(struct snd_soc_card *card,
1604 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1605 struct snd_soc_codec *codec;
1607 /* find CODEC from registered CODECs */
1608 list_for_each_entry(codec, &codec_list, list) {
1609 if (aux_dev->codec_of_node &&
1610 (codec->dev->of_node != aux_dev->codec_of_node))
1612 if (aux_dev->codec_name && strcmp(codec->name, aux_dev->codec_name))
1620 static int soc_check_aux_dev(struct snd_soc_card *card, int num)
1622 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1623 const char *codecname = aux_dev->codec_name;
1624 struct snd_soc_codec *codec = soc_find_matching_codec(card, num);
1628 if (aux_dev->codec_of_node)
1629 codecname = of_node_full_name(aux_dev->codec_of_node);
1631 dev_err(card->dev, "ASoC: %s not registered\n", codecname);
1632 return -EPROBE_DEFER;
1635 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1637 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1638 const char *codecname = aux_dev->codec_name;
1640 struct snd_soc_codec *codec = soc_find_matching_codec(card, num);
1643 if (aux_dev->codec_of_node)
1644 codecname = of_node_full_name(aux_dev->codec_of_node);
1646 /* codec not found */
1647 dev_err(card->dev, "ASoC: codec %s not found", codecname);
1648 return -EPROBE_DEFER;
1651 if (codec->probed) {
1652 dev_err(codec->dev, "ASoC: codec already probed");
1656 ret = soc_probe_codec(card, codec);
1660 ret = soc_post_component_init(card, codec, num, 1);
1665 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1667 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1668 struct snd_soc_codec *codec = rtd->codec;
1670 /* unregister the rtd device */
1671 if (rtd->dev_registered) {
1672 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1673 device_unregister(rtd->dev);
1674 rtd->dev_registered = 0;
1677 if (codec && codec->probed)
1678 soc_remove_codec(codec);
1681 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec)
1685 if (codec->cache_init)
1688 ret = snd_soc_cache_init(codec);
1691 "ASoC: Failed to set cache compression type: %d\n",
1695 codec->cache_init = 1;
1699 static int snd_soc_instantiate_card(struct snd_soc_card *card)
1701 struct snd_soc_codec *codec;
1702 struct snd_soc_dai_link *dai_link;
1703 int ret, i, order, dai_fmt;
1705 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1708 for (i = 0; i < card->num_links; i++) {
1709 ret = soc_bind_dai_link(card, i);
1714 /* check aux_devs too */
1715 for (i = 0; i < card->num_aux_devs; i++) {
1716 ret = soc_check_aux_dev(card, i);
1721 /* initialize the register cache for each available codec */
1722 list_for_each_entry(codec, &codec_list, list) {
1723 if (codec->cache_init)
1725 ret = snd_soc_init_codec_cache(codec);
1730 /* card bind complete so register a sound card */
1731 ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1732 card->owner, 0, &card->snd_card);
1735 "ASoC: can't create sound card for card %s: %d\n",
1740 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1741 card->dapm.dev = card->dev;
1742 card->dapm.card = card;
1743 list_add(&card->dapm.list, &card->dapm_list);
1745 #ifdef CONFIG_DEBUG_FS
1746 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1749 #ifdef CONFIG_PM_SLEEP
1750 /* deferred resume work */
1751 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1754 if (card->dapm_widgets)
1755 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1756 card->num_dapm_widgets);
1758 /* initialise the sound card only once */
1760 ret = card->probe(card);
1762 goto card_probe_error;
1765 /* probe all components used by DAI links on this card */
1766 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1768 for (i = 0; i < card->num_links; i++) {
1769 ret = soc_probe_link_components(card, i, order);
1772 "ASoC: failed to instantiate card %d\n",
1779 /* probe all DAI links on this card */
1780 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1782 for (i = 0; i < card->num_links; i++) {
1783 ret = soc_probe_link_dais(card, i, order);
1786 "ASoC: failed to instantiate card %d\n",
1793 for (i = 0; i < card->num_aux_devs; i++) {
1794 ret = soc_probe_aux_dev(card, i);
1797 "ASoC: failed to add auxiliary devices %d\n",
1799 goto probe_aux_dev_err;
1803 snd_soc_dapm_link_dai_widgets(card);
1804 snd_soc_dapm_connect_dai_link_widgets(card);
1807 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1809 if (card->dapm_routes)
1810 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1811 card->num_dapm_routes);
1813 for (i = 0; i < card->num_links; i++) {
1814 dai_link = &card->dai_link[i];
1815 dai_fmt = dai_link->dai_fmt;
1818 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1820 if (ret != 0 && ret != -ENOTSUPP)
1821 dev_warn(card->rtd[i].codec_dai->dev,
1822 "ASoC: Failed to set DAI format: %d\n",
1826 /* If this is a regular CPU link there will be a platform */
1828 (dai_link->platform_name || dai_link->platform_of_node)) {
1829 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1831 if (ret != 0 && ret != -ENOTSUPP)
1832 dev_warn(card->rtd[i].cpu_dai->dev,
1833 "ASoC: Failed to set DAI format: %d\n",
1835 } else if (dai_fmt) {
1836 /* Flip the polarity for the "CPU" end */
1837 dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
1838 switch (dai_link->dai_fmt &
1839 SND_SOC_DAIFMT_MASTER_MASK) {
1840 case SND_SOC_DAIFMT_CBM_CFM:
1841 dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1843 case SND_SOC_DAIFMT_CBM_CFS:
1844 dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1846 case SND_SOC_DAIFMT_CBS_CFM:
1847 dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1849 case SND_SOC_DAIFMT_CBS_CFS:
1850 dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1854 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1856 if (ret != 0 && ret != -ENOTSUPP)
1857 dev_warn(card->rtd[i].cpu_dai->dev,
1858 "ASoC: Failed to set DAI format: %d\n",
1863 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1865 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1866 "%s", card->long_name ? card->long_name : card->name);
1867 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1868 "%s", card->driver_name ? card->driver_name : card->name);
1869 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1870 switch (card->snd_card->driver[i]) {
1876 if (!isalnum(card->snd_card->driver[i]))
1877 card->snd_card->driver[i] = '_';
1882 if (card->late_probe) {
1883 ret = card->late_probe(card);
1885 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
1887 goto probe_aux_dev_err;
1891 if (card->fully_routed)
1892 list_for_each_entry(codec, &card->codec_dev_list, card_list)
1893 snd_soc_dapm_auto_nc_codec_pins(codec);
1895 snd_soc_dapm_new_widgets(card);
1897 ret = snd_card_register(card->snd_card);
1899 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
1901 goto probe_aux_dev_err;
1904 #ifdef CONFIG_SND_SOC_AC97_BUS
1905 /* register any AC97 codecs */
1906 for (i = 0; i < card->num_rtd; i++) {
1907 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1910 "ASoC: failed to register AC97: %d\n", ret);
1912 soc_unregister_ac97_dai_link(&card->rtd[i]);
1913 goto probe_aux_dev_err;
1918 card->instantiated = 1;
1919 snd_soc_dapm_sync(&card->dapm);
1920 mutex_unlock(&card->mutex);
1925 for (i = 0; i < card->num_aux_devs; i++)
1926 soc_remove_aux_dev(card, i);
1929 soc_remove_dai_links(card);
1935 snd_card_free(card->snd_card);
1938 mutex_unlock(&card->mutex);
1943 /* probes a new socdev */
1944 static int soc_probe(struct platform_device *pdev)
1946 struct snd_soc_card *card = platform_get_drvdata(pdev);
1949 * no card, so machine driver should be registering card
1950 * we should not be here in that case so ret error
1955 dev_warn(&pdev->dev,
1956 "ASoC: machine %s should use snd_soc_register_card()\n",
1959 /* Bodge while we unpick instantiation */
1960 card->dev = &pdev->dev;
1962 return snd_soc_register_card(card);
1965 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1969 /* make sure any delayed work runs */
1970 for (i = 0; i < card->num_rtd; i++) {
1971 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1972 flush_delayed_work(&rtd->delayed_work);
1975 /* remove auxiliary devices */
1976 for (i = 0; i < card->num_aux_devs; i++)
1977 soc_remove_aux_dev(card, i);
1979 /* remove and free each DAI */
1980 soc_remove_dai_links(card);
1982 soc_cleanup_card_debugfs(card);
1984 /* remove the card */
1988 snd_soc_dapm_free(&card->dapm);
1990 snd_card_free(card->snd_card);
1995 /* removes a socdev */
1996 static int soc_remove(struct platform_device *pdev)
1998 struct snd_soc_card *card = platform_get_drvdata(pdev);
2000 snd_soc_unregister_card(card);
2004 int snd_soc_poweroff(struct device *dev)
2006 struct snd_soc_card *card = dev_get_drvdata(dev);
2009 if (!card->instantiated)
2012 /* Flush out pmdown_time work - we actually do want to run it
2013 * now, we're shutting down so no imminent restart. */
2014 for (i = 0; i < card->num_rtd; i++) {
2015 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
2016 flush_delayed_work(&rtd->delayed_work);
2019 snd_soc_dapm_shutdown(card);
2021 /* deactivate pins to sleep state */
2022 for (i = 0; i < card->num_rtd; i++) {
2023 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
2024 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
2025 pinctrl_pm_select_sleep_state(codec_dai->dev);
2026 pinctrl_pm_select_sleep_state(cpu_dai->dev);
2031 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
2033 const struct dev_pm_ops snd_soc_pm_ops = {
2034 .suspend = snd_soc_suspend,
2035 .resume = snd_soc_resume,
2036 .freeze = snd_soc_suspend,
2037 .thaw = snd_soc_resume,
2038 .poweroff = snd_soc_poweroff,
2039 .restore = snd_soc_resume,
2041 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
2043 /* ASoC platform driver */
2044 static struct platform_driver soc_driver = {
2046 .name = "soc-audio",
2047 .owner = THIS_MODULE,
2048 .pm = &snd_soc_pm_ops,
2051 .remove = soc_remove,
2055 * snd_soc_new_ac97_codec - initailise AC97 device
2056 * @codec: audio codec
2057 * @ops: AC97 bus operations
2058 * @num: AC97 codec number
2060 * Initialises AC97 codec resources for use by ad-hoc devices only.
2062 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
2063 struct snd_ac97_bus_ops *ops, int num)
2065 mutex_lock(&codec->mutex);
2067 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2068 if (codec->ac97 == NULL) {
2069 mutex_unlock(&codec->mutex);
2073 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
2074 if (codec->ac97->bus == NULL) {
2077 mutex_unlock(&codec->mutex);
2081 codec->ac97->bus->ops = ops;
2082 codec->ac97->num = num;
2085 * Mark the AC97 device to be created by us. This way we ensure that the
2086 * device will be registered with the device subsystem later on.
2088 codec->ac97_created = 1;
2090 mutex_unlock(&codec->mutex);
2093 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
2095 static struct snd_ac97_reset_cfg snd_ac97_rst_cfg;
2097 static void snd_soc_ac97_warm_reset(struct snd_ac97 *ac97)
2099 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2101 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_warm_reset);
2103 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 1);
2107 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2109 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2113 static void snd_soc_ac97_reset(struct snd_ac97 *ac97)
2115 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2117 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_reset);
2119 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2120 gpio_direction_output(snd_ac97_rst_cfg.gpio_sdata, 0);
2121 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 0);
2125 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 1);
2127 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2131 static int snd_soc_ac97_parse_pinctl(struct device *dev,
2132 struct snd_ac97_reset_cfg *cfg)
2135 struct pinctrl_state *state;
2139 p = devm_pinctrl_get(dev);
2141 dev_err(dev, "Failed to get pinctrl\n");
2146 state = pinctrl_lookup_state(p, "ac97-reset");
2147 if (IS_ERR(state)) {
2148 dev_err(dev, "Can't find pinctrl state ac97-reset\n");
2149 return PTR_ERR(state);
2151 cfg->pstate_reset = state;
2153 state = pinctrl_lookup_state(p, "ac97-warm-reset");
2154 if (IS_ERR(state)) {
2155 dev_err(dev, "Can't find pinctrl state ac97-warm-reset\n");
2156 return PTR_ERR(state);
2158 cfg->pstate_warm_reset = state;
2160 state = pinctrl_lookup_state(p, "ac97-running");
2161 if (IS_ERR(state)) {
2162 dev_err(dev, "Can't find pinctrl state ac97-running\n");
2163 return PTR_ERR(state);
2165 cfg->pstate_run = state;
2167 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 0);
2169 dev_err(dev, "Can't find ac97-sync gpio\n");
2172 ret = devm_gpio_request(dev, gpio, "AC97 link sync");
2174 dev_err(dev, "Failed requesting ac97-sync gpio\n");
2177 cfg->gpio_sync = gpio;
2179 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 1);
2181 dev_err(dev, "Can't find ac97-sdata gpio %d\n", gpio);
2184 ret = devm_gpio_request(dev, gpio, "AC97 link sdata");
2186 dev_err(dev, "Failed requesting ac97-sdata gpio\n");
2189 cfg->gpio_sdata = gpio;
2191 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 2);
2193 dev_err(dev, "Can't find ac97-reset gpio\n");
2196 ret = devm_gpio_request(dev, gpio, "AC97 link reset");
2198 dev_err(dev, "Failed requesting ac97-reset gpio\n");
2201 cfg->gpio_reset = gpio;
2206 struct snd_ac97_bus_ops *soc_ac97_ops;
2207 EXPORT_SYMBOL_GPL(soc_ac97_ops);
2209 int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops)
2211 if (ops == soc_ac97_ops)
2214 if (soc_ac97_ops && ops)
2221 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops);
2224 * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions
2226 * This function sets the reset and warm_reset properties of ops and parses
2227 * the device node of pdev to get pinctrl states and gpio numbers to use.
2229 int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops,
2230 struct platform_device *pdev)
2232 struct device *dev = &pdev->dev;
2233 struct snd_ac97_reset_cfg cfg;
2236 ret = snd_soc_ac97_parse_pinctl(dev, &cfg);
2240 ret = snd_soc_set_ac97_ops(ops);
2244 ops->warm_reset = snd_soc_ac97_warm_reset;
2245 ops->reset = snd_soc_ac97_reset;
2247 snd_ac97_rst_cfg = cfg;
2250 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset);
2253 * snd_soc_free_ac97_codec - free AC97 codec device
2254 * @codec: audio codec
2256 * Frees AC97 codec device resources.
2258 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
2260 mutex_lock(&codec->mutex);
2261 #ifdef CONFIG_SND_SOC_AC97_BUS
2262 soc_unregister_ac97_codec(codec);
2264 kfree(codec->ac97->bus);
2267 codec->ac97_created = 0;
2268 mutex_unlock(&codec->mutex);
2270 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
2273 * snd_soc_cnew - create new control
2274 * @_template: control template
2275 * @data: control private data
2276 * @long_name: control long name
2277 * @prefix: control name prefix
2279 * Create a new mixer control from a template control.
2281 * Returns 0 for success, else error.
2283 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2284 void *data, const char *long_name,
2287 struct snd_kcontrol_new template;
2288 struct snd_kcontrol *kcontrol;
2291 memcpy(&template, _template, sizeof(template));
2295 long_name = template.name;
2298 name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
2302 template.name = name;
2304 template.name = long_name;
2307 kcontrol = snd_ctl_new1(&template, data);
2313 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2315 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2316 const struct snd_kcontrol_new *controls, int num_controls,
2317 const char *prefix, void *data)
2321 for (i = 0; i < num_controls; i++) {
2322 const struct snd_kcontrol_new *control = &controls[i];
2323 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2324 control->name, prefix));
2326 dev_err(dev, "ASoC: Failed to add %s: %d\n",
2327 control->name, err);
2335 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
2338 struct snd_card *card = soc_card->snd_card;
2339 struct snd_kcontrol *kctl;
2341 if (unlikely(!name))
2344 list_for_each_entry(kctl, &card->controls, list)
2345 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
2349 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
2352 * snd_soc_add_codec_controls - add an array of controls to a codec.
2353 * Convenience function to add a list of controls. Many codecs were
2354 * duplicating this code.
2356 * @codec: codec to add controls to
2357 * @controls: array of controls to add
2358 * @num_controls: number of elements in the array
2360 * Return 0 for success, else error.
2362 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2363 const struct snd_kcontrol_new *controls, int num_controls)
2365 struct snd_card *card = codec->card->snd_card;
2367 return snd_soc_add_controls(card, codec->dev, controls, num_controls,
2368 codec->name_prefix, &codec->component);
2370 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2373 * snd_soc_add_platform_controls - add an array of controls to a platform.
2374 * Convenience function to add a list of controls.
2376 * @platform: platform to add controls to
2377 * @controls: array of controls to add
2378 * @num_controls: number of elements in the array
2380 * Return 0 for success, else error.
2382 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2383 const struct snd_kcontrol_new *controls, int num_controls)
2385 struct snd_card *card = platform->card->snd_card;
2387 return snd_soc_add_controls(card, platform->dev, controls, num_controls,
2388 NULL, &platform->component);
2390 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2393 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2394 * Convenience function to add a list of controls.
2396 * @soc_card: SoC card to add controls to
2397 * @controls: array of controls to add
2398 * @num_controls: number of elements in the array
2400 * Return 0 for success, else error.
2402 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2403 const struct snd_kcontrol_new *controls, int num_controls)
2405 struct snd_card *card = soc_card->snd_card;
2407 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2410 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2413 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2414 * Convienience function to add a list of controls.
2416 * @dai: DAI to add controls to
2417 * @controls: array of controls to add
2418 * @num_controls: number of elements in the array
2420 * Return 0 for success, else error.
2422 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2423 const struct snd_kcontrol_new *controls, int num_controls)
2425 struct snd_card *card = dai->card->snd_card;
2427 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2430 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2433 * snd_soc_info_enum_double - enumerated double mixer info callback
2434 * @kcontrol: mixer control
2435 * @uinfo: control element information
2437 * Callback to provide information about a double enumerated
2440 * Returns 0 for success.
2442 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2443 struct snd_ctl_elem_info *uinfo)
2445 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2447 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2448 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2449 uinfo->value.enumerated.items = e->items;
2451 if (uinfo->value.enumerated.item >= e->items)
2452 uinfo->value.enumerated.item = e->items - 1;
2453 strlcpy(uinfo->value.enumerated.name,
2454 e->texts[uinfo->value.enumerated.item],
2455 sizeof(uinfo->value.enumerated.name));
2458 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2461 * snd_soc_get_enum_double - enumerated double mixer get callback
2462 * @kcontrol: mixer control
2463 * @ucontrol: control element information
2465 * Callback to get the value of a double enumerated mixer.
2467 * Returns 0 for success.
2469 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2470 struct snd_ctl_elem_value *ucontrol)
2472 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2473 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2474 unsigned int val, item;
2475 unsigned int reg_val;
2478 ret = snd_soc_component_read(component, e->reg, ®_val);
2481 val = (reg_val >> e->shift_l) & e->mask;
2482 item = snd_soc_enum_val_to_item(e, val);
2483 ucontrol->value.enumerated.item[0] = item;
2484 if (e->shift_l != e->shift_r) {
2485 val = (reg_val >> e->shift_l) & e->mask;
2486 item = snd_soc_enum_val_to_item(e, val);
2487 ucontrol->value.enumerated.item[1] = item;
2492 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2495 * snd_soc_put_enum_double - enumerated double mixer put callback
2496 * @kcontrol: mixer control
2497 * @ucontrol: control element information
2499 * Callback to set the value of a double enumerated mixer.
2501 * Returns 0 for success.
2503 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2504 struct snd_ctl_elem_value *ucontrol)
2506 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2507 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2508 unsigned int *item = ucontrol->value.enumerated.item;
2512 if (item[0] >= e->items)
2514 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
2515 mask = e->mask << e->shift_l;
2516 if (e->shift_l != e->shift_r) {
2517 if (item[1] >= e->items)
2519 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
2520 mask |= e->mask << e->shift_r;
2523 return snd_soc_component_update_bits(component, e->reg, mask, val);
2525 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2528 * snd_soc_read_signed - Read a codec register and interprete as signed value
2529 * @component: component
2530 * @reg: Register to read
2531 * @mask: Mask to use after shifting the register value
2532 * @shift: Right shift of register value
2533 * @sign_bit: Bit that describes if a number is negative or not.
2534 * @signed_val: Pointer to where the read value should be stored
2536 * This functions reads a codec register. The register value is shifted right
2537 * by 'shift' bits and masked with the given 'mask'. Afterwards it translates
2538 * the given registervalue into a signed integer if sign_bit is non-zero.
2540 * Returns 0 on sucess, otherwise an error value
2542 static int snd_soc_read_signed(struct snd_soc_component *component,
2543 unsigned int reg, unsigned int mask, unsigned int shift,
2544 unsigned int sign_bit, int *signed_val)
2549 ret = snd_soc_component_read(component, reg, &val);
2553 val = (val >> shift) & mask;
2560 /* non-negative number */
2561 if (!(val & BIT(sign_bit))) {
2569 * The register most probably does not contain a full-sized int.
2570 * Instead we have an arbitrary number of bits in a signed
2571 * representation which has to be translated into a full-sized int.
2572 * This is done by filling up all bits above the sign-bit.
2574 ret |= ~((int)(BIT(sign_bit) - 1));
2582 * snd_soc_info_volsw - single mixer info callback
2583 * @kcontrol: mixer control
2584 * @uinfo: control element information
2586 * Callback to provide information about a single mixer control, or a double
2587 * mixer control that spans 2 registers.
2589 * Returns 0 for success.
2591 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2592 struct snd_ctl_elem_info *uinfo)
2594 struct soc_mixer_control *mc =
2595 (struct soc_mixer_control *)kcontrol->private_value;
2598 if (!mc->platform_max)
2599 mc->platform_max = mc->max;
2600 platform_max = mc->platform_max;
2602 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2603 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2605 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2607 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2608 uinfo->value.integer.min = 0;
2609 uinfo->value.integer.max = platform_max - mc->min;
2612 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2615 * snd_soc_get_volsw - single mixer get callback
2616 * @kcontrol: mixer control
2617 * @ucontrol: control element information
2619 * Callback to get the value of a single mixer control, or a double mixer
2620 * control that spans 2 registers.
2622 * Returns 0 for success.
2624 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2625 struct snd_ctl_elem_value *ucontrol)
2627 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2628 struct soc_mixer_control *mc =
2629 (struct soc_mixer_control *)kcontrol->private_value;
2630 unsigned int reg = mc->reg;
2631 unsigned int reg2 = mc->rreg;
2632 unsigned int shift = mc->shift;
2633 unsigned int rshift = mc->rshift;
2636 int sign_bit = mc->sign_bit;
2637 unsigned int mask = (1 << fls(max)) - 1;
2638 unsigned int invert = mc->invert;
2643 mask = BIT(sign_bit + 1) - 1;
2645 ret = snd_soc_read_signed(component, reg, mask, shift, sign_bit, &val);
2649 ucontrol->value.integer.value[0] = val - min;
2651 ucontrol->value.integer.value[0] =
2652 max - ucontrol->value.integer.value[0];
2654 if (snd_soc_volsw_is_stereo(mc)) {
2656 ret = snd_soc_read_signed(component, reg, mask, rshift,
2659 ret = snd_soc_read_signed(component, reg2, mask, shift,
2664 ucontrol->value.integer.value[1] = val - min;
2666 ucontrol->value.integer.value[1] =
2667 max - ucontrol->value.integer.value[1];
2672 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2675 * snd_soc_put_volsw - single mixer put callback
2676 * @kcontrol: mixer control
2677 * @ucontrol: control element information
2679 * Callback to set the value of a single mixer control, or a double mixer
2680 * control that spans 2 registers.
2682 * Returns 0 for success.
2684 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2685 struct snd_ctl_elem_value *ucontrol)
2687 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2688 struct soc_mixer_control *mc =
2689 (struct soc_mixer_control *)kcontrol->private_value;
2690 unsigned int reg = mc->reg;
2691 unsigned int reg2 = mc->rreg;
2692 unsigned int shift = mc->shift;
2693 unsigned int rshift = mc->rshift;
2696 unsigned int sign_bit = mc->sign_bit;
2697 unsigned int mask = (1 << fls(max)) - 1;
2698 unsigned int invert = mc->invert;
2700 bool type_2r = false;
2701 unsigned int val2 = 0;
2702 unsigned int val, val_mask;
2705 mask = BIT(sign_bit + 1) - 1;
2707 val = ((ucontrol->value.integer.value[0] + min) & mask);
2710 val_mask = mask << shift;
2712 if (snd_soc_volsw_is_stereo(mc)) {
2713 val2 = ((ucontrol->value.integer.value[1] + min) & mask);
2717 val_mask |= mask << rshift;
2718 val |= val2 << rshift;
2720 val2 = val2 << shift;
2724 err = snd_soc_component_update_bits(component, reg, val_mask, val);
2729 err = snd_soc_component_update_bits(component, reg2, val_mask,
2734 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2737 * snd_soc_get_volsw_sx - single mixer get callback
2738 * @kcontrol: mixer control
2739 * @ucontrol: control element information
2741 * Callback to get the value of a single mixer control, or a double mixer
2742 * control that spans 2 registers.
2744 * Returns 0 for success.
2746 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
2747 struct snd_ctl_elem_value *ucontrol)
2749 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2750 struct soc_mixer_control *mc =
2751 (struct soc_mixer_control *)kcontrol->private_value;
2752 unsigned int reg = mc->reg;
2753 unsigned int reg2 = mc->rreg;
2754 unsigned int shift = mc->shift;
2755 unsigned int rshift = mc->rshift;
2758 int mask = (1 << (fls(min + max) - 1)) - 1;
2762 ret = snd_soc_component_read(component, reg, &val);
2766 ucontrol->value.integer.value[0] = ((val >> shift) - min) & mask;
2768 if (snd_soc_volsw_is_stereo(mc)) {
2769 ret = snd_soc_component_read(component, reg2, &val);
2773 val = ((val >> rshift) - min) & mask;
2774 ucontrol->value.integer.value[1] = val;
2779 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
2782 * snd_soc_put_volsw_sx - double mixer set callback
2783 * @kcontrol: mixer control
2784 * @uinfo: control element information
2786 * Callback to set the value of a double mixer control that spans 2 registers.
2788 * Returns 0 for success.
2790 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
2791 struct snd_ctl_elem_value *ucontrol)
2793 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2794 struct soc_mixer_control *mc =
2795 (struct soc_mixer_control *)kcontrol->private_value;
2797 unsigned int reg = mc->reg;
2798 unsigned int reg2 = mc->rreg;
2799 unsigned int shift = mc->shift;
2800 unsigned int rshift = mc->rshift;
2803 int mask = (1 << (fls(min + max) - 1)) - 1;
2805 unsigned int val, val_mask, val2 = 0;
2807 val_mask = mask << shift;
2808 val = (ucontrol->value.integer.value[0] + min) & mask;
2811 err = snd_soc_component_update_bits(component, reg, val_mask, val);
2815 if (snd_soc_volsw_is_stereo(mc)) {
2816 val_mask = mask << rshift;
2817 val2 = (ucontrol->value.integer.value[1] + min) & mask;
2818 val2 = val2 << rshift;
2820 err = snd_soc_component_update_bits(component, reg2, val_mask,
2825 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
2828 * snd_soc_info_volsw_s8 - signed mixer info callback
2829 * @kcontrol: mixer control
2830 * @uinfo: control element information
2832 * Callback to provide information about a signed mixer control.
2834 * Returns 0 for success.
2836 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2837 struct snd_ctl_elem_info *uinfo)
2839 struct soc_mixer_control *mc =
2840 (struct soc_mixer_control *)kcontrol->private_value;
2844 if (!mc->platform_max)
2845 mc->platform_max = mc->max;
2846 platform_max = mc->platform_max;
2848 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2850 uinfo->value.integer.min = 0;
2851 uinfo->value.integer.max = platform_max - min;
2854 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2857 * snd_soc_get_volsw_s8 - signed mixer get callback
2858 * @kcontrol: mixer control
2859 * @ucontrol: control element information
2861 * Callback to get the value of a signed mixer control.
2863 * Returns 0 for success.
2865 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2866 struct snd_ctl_elem_value *ucontrol)
2868 struct soc_mixer_control *mc =
2869 (struct soc_mixer_control *)kcontrol->private_value;
2870 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2871 unsigned int reg = mc->reg;
2876 ret = snd_soc_component_read(component, reg, &val);
2880 ucontrol->value.integer.value[0] =
2881 ((signed char)(val & 0xff))-min;
2882 ucontrol->value.integer.value[1] =
2883 ((signed char)((val >> 8) & 0xff))-min;
2886 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2889 * snd_soc_put_volsw_sgn - signed mixer put callback
2890 * @kcontrol: mixer control
2891 * @ucontrol: control element information
2893 * Callback to set the value of a signed mixer control.
2895 * Returns 0 for success.
2897 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2898 struct snd_ctl_elem_value *ucontrol)
2900 struct soc_mixer_control *mc =
2901 (struct soc_mixer_control *)kcontrol->private_value;
2902 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2903 unsigned int reg = mc->reg;
2907 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2908 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2910 return snd_soc_component_update_bits(component, reg, 0xffff, val);
2912 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2915 * snd_soc_info_volsw_range - single mixer info callback with range.
2916 * @kcontrol: mixer control
2917 * @uinfo: control element information
2919 * Callback to provide information, within a range, about a single
2922 * returns 0 for success.
2924 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
2925 struct snd_ctl_elem_info *uinfo)
2927 struct soc_mixer_control *mc =
2928 (struct soc_mixer_control *)kcontrol->private_value;
2932 if (!mc->platform_max)
2933 mc->platform_max = mc->max;
2934 platform_max = mc->platform_max;
2936 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2937 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2938 uinfo->value.integer.min = 0;
2939 uinfo->value.integer.max = platform_max - min;
2943 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
2946 * snd_soc_put_volsw_range - single mixer put value callback with range.
2947 * @kcontrol: mixer control
2948 * @ucontrol: control element information
2950 * Callback to set the value, within a range, for a single mixer control.
2952 * Returns 0 for success.
2954 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
2955 struct snd_ctl_elem_value *ucontrol)
2957 struct soc_mixer_control *mc =
2958 (struct soc_mixer_control *)kcontrol->private_value;
2959 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2960 unsigned int reg = mc->reg;
2961 unsigned int rreg = mc->rreg;
2962 unsigned int shift = mc->shift;
2965 unsigned int mask = (1 << fls(max)) - 1;
2966 unsigned int invert = mc->invert;
2967 unsigned int val, val_mask;
2970 val = ((ucontrol->value.integer.value[0] + min) & mask);
2973 val_mask = mask << shift;
2976 ret = snd_soc_component_update_bits(component, reg, val_mask, val);
2980 if (snd_soc_volsw_is_stereo(mc)) {
2981 val = ((ucontrol->value.integer.value[1] + min) & mask);
2984 val_mask = mask << shift;
2987 ret = snd_soc_component_update_bits(component, rreg, val_mask,
2993 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
2996 * snd_soc_get_volsw_range - single mixer get callback with range
2997 * @kcontrol: mixer control
2998 * @ucontrol: control element information
3000 * Callback to get the value, within a range, of a single mixer control.
3002 * Returns 0 for success.
3004 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
3005 struct snd_ctl_elem_value *ucontrol)
3007 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3008 struct soc_mixer_control *mc =
3009 (struct soc_mixer_control *)kcontrol->private_value;
3010 unsigned int reg = mc->reg;
3011 unsigned int rreg = mc->rreg;
3012 unsigned int shift = mc->shift;
3015 unsigned int mask = (1 << fls(max)) - 1;
3016 unsigned int invert = mc->invert;
3020 ret = snd_soc_component_read(component, reg, &val);
3024 ucontrol->value.integer.value[0] = (val >> shift) & mask;
3026 ucontrol->value.integer.value[0] =
3027 max - ucontrol->value.integer.value[0];
3028 ucontrol->value.integer.value[0] =
3029 ucontrol->value.integer.value[0] - min;
3031 if (snd_soc_volsw_is_stereo(mc)) {
3032 ret = snd_soc_component_read(component, rreg, &val);
3036 ucontrol->value.integer.value[1] = (val >> shift) & mask;
3038 ucontrol->value.integer.value[1] =
3039 max - ucontrol->value.integer.value[1];
3040 ucontrol->value.integer.value[1] =
3041 ucontrol->value.integer.value[1] - min;
3046 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
3049 * snd_soc_limit_volume - Set new limit to an existing volume control.
3051 * @codec: where to look for the control
3052 * @name: Name of the control
3053 * @max: new maximum limit
3055 * Return 0 for success, else error.
3057 int snd_soc_limit_volume(struct snd_soc_codec *codec,
3058 const char *name, int max)
3060 struct snd_card *card = codec->card->snd_card;
3061 struct snd_kcontrol *kctl;
3062 struct soc_mixer_control *mc;
3066 /* Sanity check for name and max */
3067 if (unlikely(!name || max <= 0))
3070 list_for_each_entry(kctl, &card->controls, list) {
3071 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
3077 mc = (struct soc_mixer_control *)kctl->private_value;
3078 if (max <= mc->max) {
3079 mc->platform_max = max;
3085 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
3087 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
3088 struct snd_ctl_elem_info *uinfo)
3090 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3091 struct soc_bytes *params = (void *)kcontrol->private_value;
3093 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
3094 uinfo->count = params->num_regs * component->val_bytes;
3098 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
3100 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
3101 struct snd_ctl_elem_value *ucontrol)
3103 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3104 struct soc_bytes *params = (void *)kcontrol->private_value;
3107 if (component->regmap)
3108 ret = regmap_raw_read(component->regmap, params->base,
3109 ucontrol->value.bytes.data,
3110 params->num_regs * component->val_bytes);
3114 /* Hide any masked bytes to ensure consistent data reporting */
3115 if (ret == 0 && params->mask) {
3116 switch (component->val_bytes) {
3118 ucontrol->value.bytes.data[0] &= ~params->mask;
3121 ((u16 *)(&ucontrol->value.bytes.data))[0]
3122 &= cpu_to_be16(~params->mask);
3125 ((u32 *)(&ucontrol->value.bytes.data))[0]
3126 &= cpu_to_be32(~params->mask);
3135 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
3137 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
3138 struct snd_ctl_elem_value *ucontrol)
3140 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3141 struct soc_bytes *params = (void *)kcontrol->private_value;
3143 unsigned int val, mask;
3146 if (!component->regmap)
3149 len = params->num_regs * component->val_bytes;
3151 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
3156 * If we've got a mask then we need to preserve the register
3157 * bits. We shouldn't modify the incoming data so take a
3161 ret = regmap_read(component->regmap, params->base, &val);
3165 val &= params->mask;
3167 switch (component->val_bytes) {
3169 ((u8 *)data)[0] &= ~params->mask;
3170 ((u8 *)data)[0] |= val;
3173 mask = ~params->mask;
3174 ret = regmap_parse_val(component->regmap,
3179 ((u16 *)data)[0] &= mask;
3181 ret = regmap_parse_val(component->regmap,
3186 ((u16 *)data)[0] |= val;
3189 mask = ~params->mask;
3190 ret = regmap_parse_val(component->regmap,
3195 ((u32 *)data)[0] &= mask;
3197 ret = regmap_parse_val(component->regmap,
3202 ((u32 *)data)[0] |= val;
3210 ret = regmap_raw_write(component->regmap, params->base,
3218 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
3220 int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol,
3221 struct snd_ctl_elem_info *ucontrol)
3223 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
3225 ucontrol->type = SNDRV_CTL_ELEM_TYPE_BYTES;
3226 ucontrol->count = params->max;
3230 EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext);
3233 * snd_soc_info_xr_sx - signed multi register info callback
3234 * @kcontrol: mreg control
3235 * @uinfo: control element information
3237 * Callback to provide information of a control that can
3238 * span multiple codec registers which together
3239 * forms a single signed value in a MSB/LSB manner.
3241 * Returns 0 for success.
3243 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
3244 struct snd_ctl_elem_info *uinfo)
3246 struct soc_mreg_control *mc =
3247 (struct soc_mreg_control *)kcontrol->private_value;
3248 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3250 uinfo->value.integer.min = mc->min;
3251 uinfo->value.integer.max = mc->max;
3255 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
3258 * snd_soc_get_xr_sx - signed multi register get callback
3259 * @kcontrol: mreg control
3260 * @ucontrol: control element information
3262 * Callback to get the value of a control that can span
3263 * multiple codec registers which together forms a single
3264 * signed value in a MSB/LSB manner. The control supports
3265 * specifying total no of bits used to allow for bitfields
3266 * across the multiple codec registers.
3268 * Returns 0 for success.
3270 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
3271 struct snd_ctl_elem_value *ucontrol)
3273 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3274 struct soc_mreg_control *mc =
3275 (struct soc_mreg_control *)kcontrol->private_value;
3276 unsigned int regbase = mc->regbase;
3277 unsigned int regcount = mc->regcount;
3278 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
3279 unsigned int regwmask = (1<<regwshift)-1;
3280 unsigned int invert = mc->invert;
3281 unsigned long mask = (1UL<<mc->nbits)-1;
3285 unsigned int regval;
3289 for (i = 0; i < regcount; i++) {
3290 ret = snd_soc_component_read(component, regbase+i, ®val);
3293 val |= (regval & regwmask) << (regwshift*(regcount-i-1));
3296 if (min < 0 && val > max)
3300 ucontrol->value.integer.value[0] = val;
3304 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
3307 * snd_soc_put_xr_sx - signed multi register get callback
3308 * @kcontrol: mreg control
3309 * @ucontrol: control element information
3311 * Callback to set the value of a control that can span
3312 * multiple codec registers which together forms a single
3313 * signed value in a MSB/LSB manner. The control supports
3314 * specifying total no of bits used to allow for bitfields
3315 * across the multiple codec registers.
3317 * Returns 0 for success.
3319 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
3320 struct snd_ctl_elem_value *ucontrol)
3322 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3323 struct soc_mreg_control *mc =
3324 (struct soc_mreg_control *)kcontrol->private_value;
3325 unsigned int regbase = mc->regbase;
3326 unsigned int regcount = mc->regcount;
3327 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
3328 unsigned int regwmask = (1<<regwshift)-1;
3329 unsigned int invert = mc->invert;
3330 unsigned long mask = (1UL<<mc->nbits)-1;
3332 long val = ucontrol->value.integer.value[0];
3333 unsigned int i, regval, regmask;
3339 for (i = 0; i < regcount; i++) {
3340 regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
3341 regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
3342 err = snd_soc_component_update_bits(component, regbase+i,
3350 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
3353 * snd_soc_get_strobe - strobe get callback
3354 * @kcontrol: mixer control
3355 * @ucontrol: control element information
3357 * Callback get the value of a strobe mixer control.
3359 * Returns 0 for success.
3361 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
3362 struct snd_ctl_elem_value *ucontrol)
3364 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3365 struct soc_mixer_control *mc =
3366 (struct soc_mixer_control *)kcontrol->private_value;
3367 unsigned int reg = mc->reg;
3368 unsigned int shift = mc->shift;
3369 unsigned int mask = 1 << shift;
3370 unsigned int invert = mc->invert != 0;
3374 ret = snd_soc_component_read(component, reg, &val);
3380 if (shift != 0 && val != 0)
3382 ucontrol->value.enumerated.item[0] = val ^ invert;
3386 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
3389 * snd_soc_put_strobe - strobe put callback
3390 * @kcontrol: mixer control
3391 * @ucontrol: control element information
3393 * Callback strobe a register bit to high then low (or the inverse)
3394 * in one pass of a single mixer enum control.
3396 * Returns 1 for success.
3398 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
3399 struct snd_ctl_elem_value *ucontrol)
3401 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3402 struct soc_mixer_control *mc =
3403 (struct soc_mixer_control *)kcontrol->private_value;
3404 unsigned int reg = mc->reg;
3405 unsigned int shift = mc->shift;
3406 unsigned int mask = 1 << shift;
3407 unsigned int invert = mc->invert != 0;
3408 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
3409 unsigned int val1 = (strobe ^ invert) ? mask : 0;
3410 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
3413 err = snd_soc_component_update_bits(component, reg, mask, val1);
3417 return snd_soc_component_update_bits(component, reg, mask, val2);
3419 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);
3422 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3424 * @clk_id: DAI specific clock ID
3425 * @freq: new clock frequency in Hz
3426 * @dir: new clock direction - input/output.
3428 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3430 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
3431 unsigned int freq, int dir)
3433 if (dai->driver && dai->driver->ops->set_sysclk)
3434 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
3435 else if (dai->codec && dai->codec->driver->set_sysclk)
3436 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
3441 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
3444 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3446 * @clk_id: DAI specific clock ID
3447 * @source: Source for the clock
3448 * @freq: new clock frequency in Hz
3449 * @dir: new clock direction - input/output.
3451 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3453 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
3454 int source, unsigned int freq, int dir)
3456 if (codec->driver->set_sysclk)
3457 return codec->driver->set_sysclk(codec, clk_id, source,
3462 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
3465 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3467 * @div_id: DAI specific clock divider ID
3468 * @div: new clock divisor.
3470 * Configures the clock dividers. This is used to derive the best DAI bit and
3471 * frame clocks from the system or master clock. It's best to set the DAI bit
3472 * and frame clocks as low as possible to save system power.
3474 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
3475 int div_id, int div)
3477 if (dai->driver && dai->driver->ops->set_clkdiv)
3478 return dai->driver->ops->set_clkdiv(dai, div_id, div);
3482 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
3485 * snd_soc_dai_set_pll - configure DAI PLL.
3487 * @pll_id: DAI specific PLL ID
3488 * @source: DAI specific source for the PLL
3489 * @freq_in: PLL input clock frequency in Hz
3490 * @freq_out: requested PLL output clock frequency in Hz
3492 * Configures and enables PLL to generate output clock based on input clock.
3494 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
3495 unsigned int freq_in, unsigned int freq_out)
3497 if (dai->driver && dai->driver->ops->set_pll)
3498 return dai->driver->ops->set_pll(dai, pll_id, source,
3500 else if (dai->codec && dai->codec->driver->set_pll)
3501 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
3506 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
3509 * snd_soc_codec_set_pll - configure codec PLL.
3511 * @pll_id: DAI specific PLL ID
3512 * @source: DAI specific source for the PLL
3513 * @freq_in: PLL input clock frequency in Hz
3514 * @freq_out: requested PLL output clock frequency in Hz
3516 * Configures and enables PLL to generate output clock based on input clock.
3518 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
3519 unsigned int freq_in, unsigned int freq_out)
3521 if (codec->driver->set_pll)
3522 return codec->driver->set_pll(codec, pll_id, source,
3527 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
3530 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
3532 * @ratio Ratio of BCLK to Sample rate.
3534 * Configures the DAI for a preset BCLK to sample rate ratio.
3536 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
3538 if (dai->driver && dai->driver->ops->set_bclk_ratio)
3539 return dai->driver->ops->set_bclk_ratio(dai, ratio);
3543 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);
3546 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3548 * @fmt: SND_SOC_DAIFMT_ format value.
3550 * Configures the DAI hardware format and clocking.
3552 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
3554 if (dai->driver == NULL)
3556 if (dai->driver->ops->set_fmt == NULL)
3558 return dai->driver->ops->set_fmt(dai, fmt);
3560 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
3563 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
3564 * @slots: Number of slots in use.
3565 * @tx_mask: bitmask representing active TX slots.
3566 * @rx_mask: bitmask representing active RX slots.
3568 * Generates the TDM tx and rx slot default masks for DAI.
3570 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
3571 unsigned int *tx_mask,
3572 unsigned int *rx_mask)
3574 if (*tx_mask || *rx_mask)
3580 *tx_mask = (1 << slots) - 1;
3581 *rx_mask = (1 << slots) - 1;
3587 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3589 * @tx_mask: bitmask representing active TX slots.
3590 * @rx_mask: bitmask representing active RX slots.
3591 * @slots: Number of slots in use.
3592 * @slot_width: Width in bits for each slot.
3594 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3597 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
3598 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3600 if (dai->driver && dai->driver->ops->xlate_tdm_slot_mask)
3601 dai->driver->ops->xlate_tdm_slot_mask(slots,
3602 &tx_mask, &rx_mask);
3604 snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
3606 if (dai->driver && dai->driver->ops->set_tdm_slot)
3607 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3612 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3615 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3617 * @tx_num: how many TX channels
3618 * @tx_slot: pointer to an array which imply the TX slot number channel
3620 * @rx_num: how many RX channels
3621 * @rx_slot: pointer to an array which imply the RX slot number channel
3624 * configure the relationship between channel number and TDM slot number.
3626 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3627 unsigned int tx_num, unsigned int *tx_slot,
3628 unsigned int rx_num, unsigned int *rx_slot)
3630 if (dai->driver && dai->driver->ops->set_channel_map)
3631 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3636 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3639 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3641 * @tristate: tristate enable
3643 * Tristates the DAI so that others can use it.
3645 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3647 if (dai->driver && dai->driver->ops->set_tristate)
3648 return dai->driver->ops->set_tristate(dai, tristate);
3652 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3655 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3657 * @mute: mute enable
3658 * @direction: stream to mute
3660 * Mutes the DAI DAC.
3662 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
3668 if (dai->driver->ops->mute_stream)
3669 return dai->driver->ops->mute_stream(dai, mute, direction);
3670 else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
3671 dai->driver->ops->digital_mute)
3672 return dai->driver->ops->digital_mute(dai, mute);
3676 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3679 * snd_soc_register_card - Register a card with the ASoC core
3681 * @card: Card to register
3684 int snd_soc_register_card(struct snd_soc_card *card)
3688 if (!card->name || !card->dev)
3691 for (i = 0; i < card->num_links; i++) {
3692 struct snd_soc_dai_link *link = &card->dai_link[i];
3695 * Codec must be specified by 1 of name or OF node,
3696 * not both or neither.
3698 if (!!link->codec_name == !!link->codec_of_node) {
3700 "ASoC: Neither/both codec name/of_node are set for %s\n",
3704 /* Codec DAI name must be specified */
3705 if (!link->codec_dai_name) {
3707 "ASoC: codec_dai_name not set for %s\n",
3713 * Platform may be specified by either name or OF node, but
3714 * can be left unspecified, and a dummy platform will be used.
3716 if (link->platform_name && link->platform_of_node) {
3718 "ASoC: Both platform name/of_node are set for %s\n",
3724 * CPU device may be specified by either name or OF node, but
3725 * can be left unspecified, and will be matched based on DAI
3728 if (link->cpu_name && link->cpu_of_node) {
3730 "ASoC: Neither/both cpu name/of_node are set for %s\n",
3735 * At least one of CPU DAI name or CPU device name/node must be
3738 if (!link->cpu_dai_name &&
3739 !(link->cpu_name || link->cpu_of_node)) {
3741 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
3747 dev_set_drvdata(card->dev, card);
3749 snd_soc_initialize_card_lists(card);
3751 soc_init_card_debugfs(card);
3753 card->rtd = devm_kzalloc(card->dev,
3754 sizeof(struct snd_soc_pcm_runtime) *
3755 (card->num_links + card->num_aux_devs),
3757 if (card->rtd == NULL)
3760 card->rtd_aux = &card->rtd[card->num_links];
3762 for (i = 0; i < card->num_links; i++)
3763 card->rtd[i].dai_link = &card->dai_link[i];
3765 INIT_LIST_HEAD(&card->dapm_dirty);
3766 card->instantiated = 0;
3767 mutex_init(&card->mutex);
3768 mutex_init(&card->dapm_mutex);
3770 ret = snd_soc_instantiate_card(card);
3772 soc_cleanup_card_debugfs(card);
3774 /* deactivate pins to sleep state */
3775 for (i = 0; i < card->num_rtd; i++) {
3776 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
3777 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
3778 if (!codec_dai->active)
3779 pinctrl_pm_select_sleep_state(codec_dai->dev);
3780 if (!cpu_dai->active)
3781 pinctrl_pm_select_sleep_state(cpu_dai->dev);
3786 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3789 * snd_soc_unregister_card - Unregister a card with the ASoC core
3791 * @card: Card to unregister
3794 int snd_soc_unregister_card(struct snd_soc_card *card)
3796 if (card->instantiated)
3797 soc_cleanup_card_resources(card);
3798 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
3802 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3805 * Simplify DAI link configuration by removing ".-1" from device names
3806 * and sanitizing names.
3808 static char *fmt_single_name(struct device *dev, int *id)
3810 char *found, name[NAME_SIZE];
3813 if (dev_name(dev) == NULL)
3816 strlcpy(name, dev_name(dev), NAME_SIZE);
3818 /* are we a "%s.%d" name (platform and SPI components) */
3819 found = strstr(name, dev->driver->name);
3822 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3824 /* discard ID from name if ID == -1 */
3826 found[strlen(dev->driver->name)] = '\0';
3830 /* I2C component devices are named "bus-addr" */
3831 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3832 char tmp[NAME_SIZE];
3834 /* create unique ID number from I2C addr and bus */
3835 *id = ((id1 & 0xffff) << 16) + id2;
3837 /* sanitize component name for DAI link creation */
3838 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3839 strlcpy(name, tmp, NAME_SIZE);
3844 return kstrdup(name, GFP_KERNEL);
3848 * Simplify DAI link naming for single devices with multiple DAIs by removing
3849 * any ".-1" and using the DAI name (instead of device name).
3851 static inline char *fmt_multiple_name(struct device *dev,
3852 struct snd_soc_dai_driver *dai_drv)
3854 if (dai_drv->name == NULL) {
3856 "ASoC: error - multiple DAI %s registered with no name\n",
3861 return kstrdup(dai_drv->name, GFP_KERNEL);
3865 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
3867 * @component: The component for which the DAIs should be unregistered
3869 static void snd_soc_unregister_dais(struct snd_soc_component *component)
3871 struct snd_soc_dai *dai, *_dai;
3873 list_for_each_entry_safe(dai, _dai, &component->dai_list, list) {
3874 dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
3876 list_del(&dai->list);
3883 * snd_soc_register_dais - Register a DAI with the ASoC core
3885 * @component: The component the DAIs are registered for
3886 * @codec: The CODEC that the DAIs are registered for, NULL if the component is
3888 * @dai_drv: DAI driver to use for the DAIs
3889 * @count: Number of DAIs
3890 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
3893 static int snd_soc_register_dais(struct snd_soc_component *component,
3894 struct snd_soc_codec *codec, struct snd_soc_dai_driver *dai_drv,
3895 size_t count, bool legacy_dai_naming)
3897 struct device *dev = component->dev;
3898 struct snd_soc_dai *dai;
3902 dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
3904 for (i = 0; i < count; i++) {
3906 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3913 * Back in the old days when we still had component-less DAIs,
3914 * instead of having a static name, component-less DAIs would
3915 * inherit the name of the parent device so it is possible to
3916 * register multiple instances of the DAI. We still need to keep
3917 * the same naming style even though those DAIs are not
3918 * component-less anymore.
3920 if (count == 1 && legacy_dai_naming) {
3921 dai->name = fmt_single_name(dev, &dai->id);
3923 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3925 dai->id = dai_drv[i].id;
3929 if (dai->name == NULL) {
3935 dai->component = component;
3938 dai->driver = &dai_drv[i];
3939 dai->dapm.dev = dev;
3940 if (!dai->driver->ops)
3941 dai->driver->ops = &null_dai_ops;
3944 dai->dapm.idle_bias_off = 1;
3946 list_add(&dai->list, &component->dai_list);
3948 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
3954 snd_soc_unregister_dais(component);
3960 * snd_soc_register_component - Register a component with the ASoC core
3964 __snd_soc_register_component(struct device *dev,
3965 struct snd_soc_component *cmpnt,
3966 const struct snd_soc_component_driver *cmpnt_drv,
3967 struct snd_soc_codec *codec,
3968 struct snd_soc_dai_driver *dai_drv,
3969 int num_dai, bool allow_single_dai)
3973 dev_dbg(dev, "component register %s\n", dev_name(dev));
3976 dev_err(dev, "ASoC: Failed to connecting component\n");
3980 mutex_init(&cmpnt->io_mutex);
3982 cmpnt->name = fmt_single_name(dev, &cmpnt->id);
3984 dev_err(dev, "ASoC: Failed to simplifying name\n");
3989 cmpnt->driver = cmpnt_drv;
3990 cmpnt->dai_drv = dai_drv;
3991 cmpnt->num_dai = num_dai;
3992 INIT_LIST_HEAD(&cmpnt->dai_list);
3994 ret = snd_soc_register_dais(cmpnt, codec, dai_drv, num_dai,
3997 dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret);
3998 goto error_component_name;
4001 mutex_lock(&client_mutex);
4002 list_add(&cmpnt->list, &component_list);
4003 mutex_unlock(&client_mutex);
4005 dev_dbg(cmpnt->dev, "ASoC: Registered component '%s'\n", cmpnt->name);
4009 error_component_name:
4015 int snd_soc_register_component(struct device *dev,
4016 const struct snd_soc_component_driver *cmpnt_drv,
4017 struct snd_soc_dai_driver *dai_drv,
4020 struct snd_soc_component *cmpnt;
4022 cmpnt = devm_kzalloc(dev, sizeof(*cmpnt), GFP_KERNEL);
4024 dev_err(dev, "ASoC: Failed to allocate memory\n");
4028 cmpnt->ignore_pmdown_time = true;
4029 cmpnt->registered_as_component = true;
4031 return __snd_soc_register_component(dev, cmpnt, cmpnt_drv, NULL,
4032 dai_drv, num_dai, true);
4034 EXPORT_SYMBOL_GPL(snd_soc_register_component);
4036 static void __snd_soc_unregister_component(struct snd_soc_component *cmpnt)
4038 snd_soc_unregister_dais(cmpnt);
4040 mutex_lock(&client_mutex);
4041 list_del(&cmpnt->list);
4042 mutex_unlock(&client_mutex);
4044 dev_dbg(cmpnt->dev, "ASoC: Unregistered component '%s'\n", cmpnt->name);
4049 * snd_soc_unregister_component - Unregister a component from the ASoC core
4052 void snd_soc_unregister_component(struct device *dev)
4054 struct snd_soc_component *cmpnt;
4056 list_for_each_entry(cmpnt, &component_list, list) {
4057 if (dev == cmpnt->dev && cmpnt->registered_as_component)
4063 __snd_soc_unregister_component(cmpnt);
4065 EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
4067 static int snd_soc_platform_drv_write(struct snd_soc_component *component,
4068 unsigned int reg, unsigned int val)
4070 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
4072 return platform->driver->write(platform, reg, val);
4075 static int snd_soc_platform_drv_read(struct snd_soc_component *component,
4076 unsigned int reg, unsigned int *val)
4078 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
4080 *val = platform->driver->read(platform, reg);
4086 * snd_soc_add_platform - Add a platform to the ASoC core
4087 * @dev: The parent device for the platform
4088 * @platform: The platform to add
4089 * @platform_driver: The driver for the platform
4091 int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
4092 const struct snd_soc_platform_driver *platform_drv)
4096 /* create platform component name */
4097 platform->name = fmt_single_name(dev, &platform->id);
4098 if (platform->name == NULL)
4101 platform->dev = dev;
4102 platform->driver = platform_drv;
4103 platform->dapm.dev = dev;
4104 platform->dapm.platform = platform;
4105 platform->dapm.component = &platform->component;
4106 platform->dapm.stream_event = platform_drv->stream_event;
4107 if (platform_drv->write)
4108 platform->component.write = snd_soc_platform_drv_write;
4109 if (platform_drv->read)
4110 platform->component.read = snd_soc_platform_drv_read;
4112 /* register component */
4113 ret = __snd_soc_register_component(dev, &platform->component,
4114 &platform_drv->component_driver,
4115 NULL, NULL, 0, false);
4117 dev_err(platform->component.dev,
4118 "ASoC: Failed to register component: %d\n", ret);
4122 mutex_lock(&client_mutex);
4123 list_add(&platform->list, &platform_list);
4124 mutex_unlock(&client_mutex);
4126 dev_dbg(dev, "ASoC: Registered platform '%s'\n", platform->name);
4130 EXPORT_SYMBOL_GPL(snd_soc_add_platform);
4133 * snd_soc_register_platform - Register a platform with the ASoC core
4135 * @platform: platform to register
4137 int snd_soc_register_platform(struct device *dev,
4138 const struct snd_soc_platform_driver *platform_drv)
4140 struct snd_soc_platform *platform;
4143 dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
4145 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
4146 if (platform == NULL)
4149 ret = snd_soc_add_platform(dev, platform, platform_drv);
4155 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
4158 * snd_soc_remove_platform - Remove a platform from the ASoC core
4159 * @platform: the platform to remove
4161 void snd_soc_remove_platform(struct snd_soc_platform *platform)
4163 __snd_soc_unregister_component(&platform->component);
4165 mutex_lock(&client_mutex);
4166 list_del(&platform->list);
4167 mutex_unlock(&client_mutex);
4169 dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
4171 kfree(platform->name);
4173 EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
4175 struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
4177 struct snd_soc_platform *platform;
4179 list_for_each_entry(platform, &platform_list, list) {
4180 if (dev == platform->dev)
4186 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
4189 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
4191 * @platform: platform to unregister
4193 void snd_soc_unregister_platform(struct device *dev)
4195 struct snd_soc_platform *platform;
4197 platform = snd_soc_lookup_platform(dev);
4201 snd_soc_remove_platform(platform);
4204 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
4206 static u64 codec_format_map[] = {
4207 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
4208 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
4209 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
4210 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
4211 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
4212 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
4213 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4214 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4215 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
4216 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
4217 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
4218 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
4219 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
4220 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
4221 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
4222 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
4225 /* Fix up the DAI formats for endianness: codecs don't actually see
4226 * the endianness of the data but we're using the CPU format
4227 * definitions which do need to include endianness so we ensure that
4228 * codec DAIs always have both big and little endian variants set.
4230 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
4234 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
4235 if (stream->formats & codec_format_map[i])
4236 stream->formats |= codec_format_map[i];
4239 static int snd_soc_codec_drv_write(struct snd_soc_component *component,
4240 unsigned int reg, unsigned int val)
4242 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
4244 return codec->driver->write(codec, reg, val);
4247 static int snd_soc_codec_drv_read(struct snd_soc_component *component,
4248 unsigned int reg, unsigned int *val)
4250 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
4252 *val = codec->driver->read(codec, reg);
4258 * snd_soc_register_codec - Register a codec with the ASoC core
4260 * @codec: codec to register
4262 int snd_soc_register_codec(struct device *dev,
4263 const struct snd_soc_codec_driver *codec_drv,
4264 struct snd_soc_dai_driver *dai_drv,
4267 struct snd_soc_codec *codec;
4268 struct regmap *regmap;
4271 dev_dbg(dev, "codec register %s\n", dev_name(dev));
4273 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
4277 /* create CODEC component name */
4278 codec->name = fmt_single_name(dev, &codec->id);
4279 if (codec->name == NULL) {
4284 if (codec_drv->write)
4285 codec->component.write = snd_soc_codec_drv_write;
4286 if (codec_drv->read)
4287 codec->component.read = snd_soc_codec_drv_read;
4288 codec->component.ignore_pmdown_time = codec_drv->ignore_pmdown_time;
4289 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
4290 codec->dapm.dev = dev;
4291 codec->dapm.codec = codec;
4292 codec->dapm.component = &codec->component;
4293 codec->dapm.seq_notifier = codec_drv->seq_notifier;
4294 codec->dapm.stream_event = codec_drv->stream_event;
4296 codec->driver = codec_drv;
4297 codec->component.val_bytes = codec_drv->reg_word_size;
4298 mutex_init(&codec->mutex);
4300 if (!codec->component.write) {
4301 if (codec_drv->get_regmap)
4302 regmap = codec_drv->get_regmap(dev);
4304 regmap = dev_get_regmap(dev, NULL);
4307 ret = snd_soc_component_init_io(&codec->component,
4311 "Failed to set cache I/O:%d\n",
4318 for (i = 0; i < num_dai; i++) {
4319 fixup_codec_formats(&dai_drv[i].playback);
4320 fixup_codec_formats(&dai_drv[i].capture);
4323 mutex_lock(&client_mutex);
4324 list_add(&codec->list, &codec_list);
4325 mutex_unlock(&client_mutex);
4327 /* register component */
4328 ret = __snd_soc_register_component(dev, &codec->component,
4329 &codec_drv->component_driver,
4330 codec, dai_drv, num_dai, false);
4332 dev_err(codec->dev, "ASoC: Failed to regster component: %d\n", ret);
4333 goto fail_codec_name;
4336 dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n", codec->name);
4340 mutex_lock(&client_mutex);
4341 list_del(&codec->list);
4342 mutex_unlock(&client_mutex);
4349 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
4352 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4354 * @codec: codec to unregister
4356 void snd_soc_unregister_codec(struct device *dev)
4358 struct snd_soc_codec *codec;
4360 list_for_each_entry(codec, &codec_list, list) {
4361 if (dev == codec->dev)
4367 __snd_soc_unregister_component(&codec->component);
4369 mutex_lock(&client_mutex);
4370 list_del(&codec->list);
4371 mutex_unlock(&client_mutex);
4373 dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n", codec->name);
4375 snd_soc_cache_exit(codec);
4379 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
4381 /* Retrieve a card's name from device tree */
4382 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
4383 const char *propname)
4385 struct device_node *np = card->dev->of_node;
4388 ret = of_property_read_string_index(np, propname, 0, &card->name);
4390 * EINVAL means the property does not exist. This is fine providing
4391 * card->name was previously set, which is checked later in
4392 * snd_soc_register_card.
4394 if (ret < 0 && ret != -EINVAL) {
4396 "ASoC: Property '%s' could not be read: %d\n",
4403 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
4405 static const struct snd_soc_dapm_widget simple_widgets[] = {
4406 SND_SOC_DAPM_MIC("Microphone", NULL),
4407 SND_SOC_DAPM_LINE("Line", NULL),
4408 SND_SOC_DAPM_HP("Headphone", NULL),
4409 SND_SOC_DAPM_SPK("Speaker", NULL),
4412 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
4413 const char *propname)
4415 struct device_node *np = card->dev->of_node;
4416 struct snd_soc_dapm_widget *widgets;
4417 const char *template, *wname;
4418 int i, j, num_widgets, ret;
4420 num_widgets = of_property_count_strings(np, propname);
4421 if (num_widgets < 0) {
4423 "ASoC: Property '%s' does not exist\n", propname);
4426 if (num_widgets & 1) {
4428 "ASoC: Property '%s' length is not even\n", propname);
4434 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4439 widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets),
4443 "ASoC: Could not allocate memory for widgets\n");
4447 for (i = 0; i < num_widgets; i++) {
4448 ret = of_property_read_string_index(np, propname,
4452 "ASoC: Property '%s' index %d read error:%d\n",
4453 propname, 2 * i, ret);
4457 for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) {
4458 if (!strncmp(template, simple_widgets[j].name,
4459 strlen(simple_widgets[j].name))) {
4460 widgets[i] = simple_widgets[j];
4465 if (j >= ARRAY_SIZE(simple_widgets)) {
4467 "ASoC: DAPM widget '%s' is not supported\n",
4472 ret = of_property_read_string_index(np, propname,
4477 "ASoC: Property '%s' index %d read error:%d\n",
4478 propname, (2 * i) + 1, ret);
4482 widgets[i].name = wname;
4485 card->dapm_widgets = widgets;
4486 card->num_dapm_widgets = num_widgets;
4490 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets);
4492 int snd_soc_of_parse_tdm_slot(struct device_node *np,
4493 unsigned int *slots,
4494 unsigned int *slot_width)
4499 if (of_property_read_bool(np, "dai-tdm-slot-num")) {
4500 ret = of_property_read_u32(np, "dai-tdm-slot-num", &val);
4508 if (of_property_read_bool(np, "dai-tdm-slot-width")) {
4509 ret = of_property_read_u32(np, "dai-tdm-slot-width", &val);
4519 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot);
4521 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
4522 const char *propname)
4524 struct device_node *np = card->dev->of_node;
4526 struct snd_soc_dapm_route *routes;
4529 num_routes = of_property_count_strings(np, propname);
4530 if (num_routes < 0 || num_routes & 1) {
4532 "ASoC: Property '%s' does not exist or its length is not even\n",
4538 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4543 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
4547 "ASoC: Could not allocate DAPM route table\n");
4551 for (i = 0; i < num_routes; i++) {
4552 ret = of_property_read_string_index(np, propname,
4553 2 * i, &routes[i].sink);
4556 "ASoC: Property '%s' index %d could not be read: %d\n",
4557 propname, 2 * i, ret);
4560 ret = of_property_read_string_index(np, propname,
4561 (2 * i) + 1, &routes[i].source);
4564 "ASoC: Property '%s' index %d could not be read: %d\n",
4565 propname, (2 * i) + 1, ret);
4570 card->num_dapm_routes = num_routes;
4571 card->dapm_routes = routes;
4575 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
4577 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
4582 unsigned int format = 0;
4588 } of_fmt_table[] = {
4589 { "i2s", SND_SOC_DAIFMT_I2S },
4590 { "right_j", SND_SOC_DAIFMT_RIGHT_J },
4591 { "left_j", SND_SOC_DAIFMT_LEFT_J },
4592 { "dsp_a", SND_SOC_DAIFMT_DSP_A },
4593 { "dsp_b", SND_SOC_DAIFMT_DSP_B },
4594 { "ac97", SND_SOC_DAIFMT_AC97 },
4595 { "pdm", SND_SOC_DAIFMT_PDM},
4596 { "msb", SND_SOC_DAIFMT_MSB },
4597 { "lsb", SND_SOC_DAIFMT_LSB },
4604 * check "[prefix]format = xxx"
4605 * SND_SOC_DAIFMT_FORMAT_MASK area
4607 snprintf(prop, sizeof(prop), "%sformat", prefix);
4608 ret = of_property_read_string(np, prop, &str);
4610 for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
4611 if (strcmp(str, of_fmt_table[i].name) == 0) {
4612 format |= of_fmt_table[i].val;
4619 * check "[prefix]continuous-clock"
4620 * SND_SOC_DAIFMT_CLOCK_MASK area
4622 snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
4623 if (of_get_property(np, prop, NULL))
4624 format |= SND_SOC_DAIFMT_CONT;
4626 format |= SND_SOC_DAIFMT_GATED;
4629 * check "[prefix]bitclock-inversion"
4630 * check "[prefix]frame-inversion"
4631 * SND_SOC_DAIFMT_INV_MASK area
4633 snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
4634 bit = !!of_get_property(np, prop, NULL);
4636 snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
4637 frame = !!of_get_property(np, prop, NULL);
4639 switch ((bit << 4) + frame) {
4641 format |= SND_SOC_DAIFMT_IB_IF;
4644 format |= SND_SOC_DAIFMT_IB_NF;
4647 format |= SND_SOC_DAIFMT_NB_IF;
4650 /* SND_SOC_DAIFMT_NB_NF is default */
4655 * check "[prefix]bitclock-master"
4656 * check "[prefix]frame-master"
4657 * SND_SOC_DAIFMT_MASTER_MASK area
4659 snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
4660 bit = !!of_get_property(np, prop, NULL);
4662 snprintf(prop, sizeof(prop), "%sframe-master", prefix);
4663 frame = !!of_get_property(np, prop, NULL);
4665 switch ((bit << 4) + frame) {
4667 format |= SND_SOC_DAIFMT_CBM_CFM;
4670 format |= SND_SOC_DAIFMT_CBM_CFS;
4673 format |= SND_SOC_DAIFMT_CBS_CFM;
4676 format |= SND_SOC_DAIFMT_CBS_CFS;
4682 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
4684 int snd_soc_of_get_dai_name(struct device_node *of_node,
4685 const char **dai_name)
4687 struct snd_soc_component *pos;
4688 struct of_phandle_args args;
4691 ret = of_parse_phandle_with_args(of_node, "sound-dai",
4692 "#sound-dai-cells", 0, &args);
4696 ret = -EPROBE_DEFER;
4698 mutex_lock(&client_mutex);
4699 list_for_each_entry(pos, &component_list, list) {
4700 if (pos->dev->of_node != args.np)
4703 if (pos->driver->of_xlate_dai_name) {
4704 ret = pos->driver->of_xlate_dai_name(pos, &args, dai_name);
4708 switch (args.args_count) {
4710 id = 0; /* same as dai_drv[0] */
4720 if (id < 0 || id >= pos->num_dai) {
4727 *dai_name = pos->dai_drv[id].name;
4729 *dai_name = pos->name;
4734 mutex_unlock(&client_mutex);
4736 of_node_put(args.np);
4740 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
4742 static int __init snd_soc_init(void)
4744 #ifdef CONFIG_DEBUG_FS
4745 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
4746 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
4747 pr_warn("ASoC: Failed to create debugfs directory\n");
4748 snd_soc_debugfs_root = NULL;
4751 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
4753 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4755 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
4757 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4759 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
4760 &platform_list_fops))
4761 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4764 snd_soc_util_init();
4766 return platform_driver_register(&soc_driver);
4768 module_init(snd_soc_init);
4770 static void __exit snd_soc_exit(void)
4772 snd_soc_util_exit();
4774 #ifdef CONFIG_DEBUG_FS
4775 debugfs_remove_recursive(snd_soc_debugfs_root);
4777 platform_driver_unregister(&soc_driver);
4779 module_exit(snd_soc_exit);
4781 /* Module information */
4782 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4783 MODULE_DESCRIPTION("ALSA SoC Core");
4784 MODULE_LICENSE("GPL");
4785 MODULE_ALIAS("platform:soc-audio");