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;
1020 list_del(&codec_dai->card_list);
1024 static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order)
1026 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1027 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
1030 /* unregister the rtd device */
1031 if (rtd->dev_registered) {
1032 device_remove_file(rtd->dev, &dev_attr_pmdown_time);
1033 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1034 device_unregister(rtd->dev);
1035 rtd->dev_registered = 0;
1038 /* remove the CODEC DAI */
1039 soc_remove_codec_dai(codec_dai, order);
1041 /* remove the cpu_dai */
1042 if (cpu_dai && cpu_dai->probed &&
1043 cpu_dai->driver->remove_order == order) {
1044 if (cpu_dai->driver->remove) {
1045 err = cpu_dai->driver->remove(cpu_dai);
1047 dev_err(cpu_dai->dev,
1048 "ASoC: failed to remove %s: %d\n",
1049 cpu_dai->name, err);
1051 cpu_dai->probed = 0;
1052 list_del(&cpu_dai->card_list);
1054 if (!cpu_dai->codec) {
1055 snd_soc_dapm_free(&cpu_dai->dapm);
1056 module_put(cpu_dai->dev->driver->owner);
1061 static void soc_remove_link_components(struct snd_soc_card *card, int num,
1064 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1065 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1066 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1067 struct snd_soc_platform *platform = rtd->platform;
1068 struct snd_soc_codec *codec;
1070 /* remove the platform */
1071 if (platform && platform->probed &&
1072 platform->driver->remove_order == order) {
1073 soc_remove_platform(platform);
1076 /* remove the CODEC-side CODEC */
1078 codec = codec_dai->codec;
1079 if (codec && codec->probed &&
1080 codec->driver->remove_order == order)
1081 soc_remove_codec(codec);
1084 /* remove any CPU-side CODEC */
1086 codec = cpu_dai->codec;
1087 if (codec && codec->probed &&
1088 codec->driver->remove_order == order)
1089 soc_remove_codec(codec);
1093 static void soc_remove_dai_links(struct snd_soc_card *card)
1097 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1099 for (dai = 0; dai < card->num_rtd; dai++)
1100 soc_remove_link_dais(card, dai, order);
1103 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1105 for (dai = 0; dai < card->num_rtd; dai++)
1106 soc_remove_link_components(card, dai, order);
1112 static void soc_set_name_prefix(struct snd_soc_card *card,
1113 struct snd_soc_codec *codec)
1117 if (card->codec_conf == NULL)
1120 for (i = 0; i < card->num_configs; i++) {
1121 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1122 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
1123 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;
1408 list_add(&codec_dai->card_list, &card->dai_dev_list);
1414 static int soc_link_dai_widgets(struct snd_soc_card *card,
1415 struct snd_soc_dai_link *dai_link,
1416 struct snd_soc_dai *cpu_dai,
1417 struct snd_soc_dai *codec_dai)
1419 struct snd_soc_dapm_widget *play_w, *capture_w;
1422 /* link the DAI widgets */
1423 play_w = codec_dai->playback_widget;
1424 capture_w = cpu_dai->capture_widget;
1425 if (play_w && capture_w) {
1426 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1429 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1430 play_w->name, capture_w->name, ret);
1435 play_w = cpu_dai->playback_widget;
1436 capture_w = codec_dai->capture_widget;
1437 if (play_w && capture_w) {
1438 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1441 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1442 play_w->name, capture_w->name, ret);
1450 static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
1452 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1453 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1454 struct snd_soc_codec *codec = rtd->codec;
1455 struct snd_soc_platform *platform = rtd->platform;
1456 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1457 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1460 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1461 card->name, num, order);
1463 /* config components */
1464 cpu_dai->platform = platform;
1465 codec_dai->card = card;
1466 cpu_dai->card = card;
1468 /* set default power off timeout */
1469 rtd->pmdown_time = pmdown_time;
1471 /* probe the cpu_dai */
1472 if (!cpu_dai->probed &&
1473 cpu_dai->driver->probe_order == order) {
1474 if (!cpu_dai->codec) {
1475 cpu_dai->dapm.card = card;
1476 if (!try_module_get(cpu_dai->dev->driver->owner))
1479 list_add(&cpu_dai->dapm.list, &card->dapm_list);
1482 if (cpu_dai->driver->probe) {
1483 ret = cpu_dai->driver->probe(cpu_dai);
1485 dev_err(cpu_dai->dev,
1486 "ASoC: failed to probe CPU DAI %s: %d\n",
1487 cpu_dai->name, ret);
1488 module_put(cpu_dai->dev->driver->owner);
1492 cpu_dai->probed = 1;
1493 /* mark cpu_dai as probed and add to card dai list */
1494 list_add(&cpu_dai->card_list, &card->dai_dev_list);
1497 /* probe the CODEC DAI */
1498 ret = soc_probe_codec_dai(card, codec_dai, order);
1502 /* complete DAI probe during last probe */
1503 if (order != SND_SOC_COMP_ORDER_LAST)
1506 ret = soc_post_component_init(card, codec, num, 0);
1510 ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
1512 dev_warn(rtd->dev, "ASoC: failed to add pmdown_time sysfs: %d\n",
1515 if (cpu_dai->driver->compress_dai) {
1516 /*create compress_device"*/
1517 ret = soc_new_compress(rtd, num);
1519 dev_err(card->dev, "ASoC: can't create compress %s\n",
1520 dai_link->stream_name);
1525 if (!dai_link->params) {
1526 /* create the pcm */
1527 ret = soc_new_pcm(rtd, num);
1529 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1530 dai_link->stream_name, ret);
1534 INIT_DELAYED_WORK(&rtd->delayed_work,
1535 codec2codec_close_delayed_work);
1537 /* link the DAI widgets */
1538 ret = soc_link_dai_widgets(card, dai_link,
1539 cpu_dai, codec_dai);
1545 /* add platform data for AC97 devices */
1546 if (rtd->codec_dai->driver->ac97_control)
1547 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1552 #ifdef CONFIG_SND_SOC_AC97_BUS
1553 static int soc_register_ac97_codec(struct snd_soc_codec *codec,
1554 struct snd_soc_dai *codec_dai)
1558 /* Only instantiate AC97 if not already done by the adaptor
1559 * for the generic AC97 subsystem.
1561 if (codec_dai->driver->ac97_control && !codec->ac97_registered) {
1563 * It is possible that the AC97 device is already registered to
1564 * the device subsystem. This happens when the device is created
1565 * via snd_ac97_mixer(). Currently only SoC codec that does so
1566 * is the generic AC97 glue but others migh emerge.
1568 * In those cases we don't try to register the device again.
1570 if (!codec->ac97_created)
1573 ret = soc_ac97_dev_register(codec);
1576 "ASoC: AC97 device register failed: %d\n", ret);
1580 codec->ac97_registered = 1;
1585 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1587 return soc_register_ac97_codec(rtd->codec, rtd->codec_dai);
1590 static void soc_unregister_ac97_codec(struct snd_soc_codec *codec)
1592 if (codec->ac97_registered) {
1593 soc_ac97_dev_unregister(codec);
1594 codec->ac97_registered = 0;
1598 static void soc_unregister_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1600 soc_unregister_ac97_codec(rtd->codec);
1604 static int soc_check_aux_dev(struct snd_soc_card *card, int num)
1606 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1607 struct snd_soc_codec *codec;
1609 /* find CODEC from registered CODECs*/
1610 list_for_each_entry(codec, &codec_list, list) {
1611 if (!strcmp(codec->name, aux_dev->codec_name))
1615 dev_err(card->dev, "ASoC: %s not registered\n", aux_dev->codec_name);
1617 return -EPROBE_DEFER;
1620 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1622 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1623 struct snd_soc_codec *codec;
1626 /* find CODEC from registered CODECs*/
1627 list_for_each_entry(codec, &codec_list, list) {
1628 if (!strcmp(codec->name, aux_dev->codec_name)) {
1629 if (codec->probed) {
1631 "ASoC: codec already probed");
1638 /* codec not found */
1639 dev_err(card->dev, "ASoC: codec %s not found", aux_dev->codec_name);
1640 return -EPROBE_DEFER;
1643 ret = soc_probe_codec(card, codec);
1647 ret = soc_post_component_init(card, codec, num, 1);
1653 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1655 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1656 struct snd_soc_codec *codec = rtd->codec;
1658 /* unregister the rtd device */
1659 if (rtd->dev_registered) {
1660 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1661 device_unregister(rtd->dev);
1662 rtd->dev_registered = 0;
1665 if (codec && codec->probed)
1666 soc_remove_codec(codec);
1669 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec)
1673 if (codec->cache_init)
1676 ret = snd_soc_cache_init(codec);
1679 "ASoC: Failed to set cache compression type: %d\n",
1683 codec->cache_init = 1;
1687 static int snd_soc_instantiate_card(struct snd_soc_card *card)
1689 struct snd_soc_codec *codec;
1690 struct snd_soc_dai_link *dai_link;
1691 int ret, i, order, dai_fmt;
1693 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1696 for (i = 0; i < card->num_links; i++) {
1697 ret = soc_bind_dai_link(card, i);
1702 /* check aux_devs too */
1703 for (i = 0; i < card->num_aux_devs; i++) {
1704 ret = soc_check_aux_dev(card, i);
1709 /* initialize the register cache for each available codec */
1710 list_for_each_entry(codec, &codec_list, list) {
1711 if (codec->cache_init)
1713 ret = snd_soc_init_codec_cache(codec);
1718 /* card bind complete so register a sound card */
1719 ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1720 card->owner, 0, &card->snd_card);
1723 "ASoC: can't create sound card for card %s: %d\n",
1728 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1729 card->dapm.dev = card->dev;
1730 card->dapm.card = card;
1731 list_add(&card->dapm.list, &card->dapm_list);
1733 #ifdef CONFIG_DEBUG_FS
1734 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1737 #ifdef CONFIG_PM_SLEEP
1738 /* deferred resume work */
1739 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1742 if (card->dapm_widgets)
1743 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1744 card->num_dapm_widgets);
1746 /* initialise the sound card only once */
1748 ret = card->probe(card);
1750 goto card_probe_error;
1753 /* probe all components used by DAI links on this card */
1754 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1756 for (i = 0; i < card->num_links; i++) {
1757 ret = soc_probe_link_components(card, i, order);
1760 "ASoC: failed to instantiate card %d\n",
1767 /* probe all DAI links on this card */
1768 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1770 for (i = 0; i < card->num_links; i++) {
1771 ret = soc_probe_link_dais(card, i, order);
1774 "ASoC: failed to instantiate card %d\n",
1781 for (i = 0; i < card->num_aux_devs; i++) {
1782 ret = soc_probe_aux_dev(card, i);
1785 "ASoC: failed to add auxiliary devices %d\n",
1787 goto probe_aux_dev_err;
1791 snd_soc_dapm_link_dai_widgets(card);
1792 snd_soc_dapm_connect_dai_link_widgets(card);
1795 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1797 if (card->dapm_routes)
1798 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1799 card->num_dapm_routes);
1801 for (i = 0; i < card->num_links; i++) {
1802 dai_link = &card->dai_link[i];
1803 dai_fmt = dai_link->dai_fmt;
1806 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1808 if (ret != 0 && ret != -ENOTSUPP)
1809 dev_warn(card->rtd[i].codec_dai->dev,
1810 "ASoC: Failed to set DAI format: %d\n",
1814 /* If this is a regular CPU link there will be a platform */
1816 (dai_link->platform_name || dai_link->platform_of_node)) {
1817 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1819 if (ret != 0 && ret != -ENOTSUPP)
1820 dev_warn(card->rtd[i].cpu_dai->dev,
1821 "ASoC: Failed to set DAI format: %d\n",
1823 } else if (dai_fmt) {
1824 /* Flip the polarity for the "CPU" end */
1825 dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
1826 switch (dai_link->dai_fmt &
1827 SND_SOC_DAIFMT_MASTER_MASK) {
1828 case SND_SOC_DAIFMT_CBM_CFM:
1829 dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1831 case SND_SOC_DAIFMT_CBM_CFS:
1832 dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1834 case SND_SOC_DAIFMT_CBS_CFM:
1835 dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1837 case SND_SOC_DAIFMT_CBS_CFS:
1838 dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1842 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1844 if (ret != 0 && ret != -ENOTSUPP)
1845 dev_warn(card->rtd[i].cpu_dai->dev,
1846 "ASoC: Failed to set DAI format: %d\n",
1851 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1853 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1854 "%s", card->long_name ? card->long_name : card->name);
1855 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1856 "%s", card->driver_name ? card->driver_name : card->name);
1857 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1858 switch (card->snd_card->driver[i]) {
1864 if (!isalnum(card->snd_card->driver[i]))
1865 card->snd_card->driver[i] = '_';
1870 if (card->late_probe) {
1871 ret = card->late_probe(card);
1873 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
1875 goto probe_aux_dev_err;
1879 if (card->fully_routed)
1880 list_for_each_entry(codec, &card->codec_dev_list, card_list)
1881 snd_soc_dapm_auto_nc_codec_pins(codec);
1883 snd_soc_dapm_new_widgets(card);
1885 ret = snd_card_register(card->snd_card);
1887 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
1889 goto probe_aux_dev_err;
1892 #ifdef CONFIG_SND_SOC_AC97_BUS
1893 /* register any AC97 codecs */
1894 for (i = 0; i < card->num_rtd; i++) {
1895 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1898 "ASoC: failed to register AC97: %d\n", ret);
1900 soc_unregister_ac97_dai_link(&card->rtd[i]);
1901 goto probe_aux_dev_err;
1906 card->instantiated = 1;
1907 snd_soc_dapm_sync(&card->dapm);
1908 mutex_unlock(&card->mutex);
1913 for (i = 0; i < card->num_aux_devs; i++)
1914 soc_remove_aux_dev(card, i);
1917 soc_remove_dai_links(card);
1923 snd_card_free(card->snd_card);
1926 mutex_unlock(&card->mutex);
1931 /* probes a new socdev */
1932 static int soc_probe(struct platform_device *pdev)
1934 struct snd_soc_card *card = platform_get_drvdata(pdev);
1937 * no card, so machine driver should be registering card
1938 * we should not be here in that case so ret error
1943 dev_warn(&pdev->dev,
1944 "ASoC: machine %s should use snd_soc_register_card()\n",
1947 /* Bodge while we unpick instantiation */
1948 card->dev = &pdev->dev;
1950 return snd_soc_register_card(card);
1953 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1957 /* make sure any delayed work runs */
1958 for (i = 0; i < card->num_rtd; i++) {
1959 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1960 flush_delayed_work(&rtd->delayed_work);
1963 /* remove auxiliary devices */
1964 for (i = 0; i < card->num_aux_devs; i++)
1965 soc_remove_aux_dev(card, i);
1967 /* remove and free each DAI */
1968 soc_remove_dai_links(card);
1970 soc_cleanup_card_debugfs(card);
1972 /* remove the card */
1976 snd_soc_dapm_free(&card->dapm);
1978 snd_card_free(card->snd_card);
1983 /* removes a socdev */
1984 static int soc_remove(struct platform_device *pdev)
1986 struct snd_soc_card *card = platform_get_drvdata(pdev);
1988 snd_soc_unregister_card(card);
1992 int snd_soc_poweroff(struct device *dev)
1994 struct snd_soc_card *card = dev_get_drvdata(dev);
1997 if (!card->instantiated)
2000 /* Flush out pmdown_time work - we actually do want to run it
2001 * now, we're shutting down so no imminent restart. */
2002 for (i = 0; i < card->num_rtd; i++) {
2003 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
2004 flush_delayed_work(&rtd->delayed_work);
2007 snd_soc_dapm_shutdown(card);
2009 /* deactivate pins to sleep state */
2010 for (i = 0; i < card->num_rtd; i++) {
2011 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
2012 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
2013 pinctrl_pm_select_sleep_state(codec_dai->dev);
2014 pinctrl_pm_select_sleep_state(cpu_dai->dev);
2019 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
2021 const struct dev_pm_ops snd_soc_pm_ops = {
2022 .suspend = snd_soc_suspend,
2023 .resume = snd_soc_resume,
2024 .freeze = snd_soc_suspend,
2025 .thaw = snd_soc_resume,
2026 .poweroff = snd_soc_poweroff,
2027 .restore = snd_soc_resume,
2029 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
2031 /* ASoC platform driver */
2032 static struct platform_driver soc_driver = {
2034 .name = "soc-audio",
2035 .owner = THIS_MODULE,
2036 .pm = &snd_soc_pm_ops,
2039 .remove = soc_remove,
2043 * snd_soc_new_ac97_codec - initailise AC97 device
2044 * @codec: audio codec
2045 * @ops: AC97 bus operations
2046 * @num: AC97 codec number
2048 * Initialises AC97 codec resources for use by ad-hoc devices only.
2050 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
2051 struct snd_ac97_bus_ops *ops, int num)
2053 mutex_lock(&codec->mutex);
2055 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2056 if (codec->ac97 == NULL) {
2057 mutex_unlock(&codec->mutex);
2061 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
2062 if (codec->ac97->bus == NULL) {
2065 mutex_unlock(&codec->mutex);
2069 codec->ac97->bus->ops = ops;
2070 codec->ac97->num = num;
2073 * Mark the AC97 device to be created by us. This way we ensure that the
2074 * device will be registered with the device subsystem later on.
2076 codec->ac97_created = 1;
2078 mutex_unlock(&codec->mutex);
2081 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
2083 static struct snd_ac97_reset_cfg snd_ac97_rst_cfg;
2085 static void snd_soc_ac97_warm_reset(struct snd_ac97 *ac97)
2087 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2089 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_warm_reset);
2091 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 1);
2095 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2097 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2101 static void snd_soc_ac97_reset(struct snd_ac97 *ac97)
2103 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2105 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_reset);
2107 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2108 gpio_direction_output(snd_ac97_rst_cfg.gpio_sdata, 0);
2109 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 0);
2113 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 1);
2115 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2119 static int snd_soc_ac97_parse_pinctl(struct device *dev,
2120 struct snd_ac97_reset_cfg *cfg)
2123 struct pinctrl_state *state;
2127 p = devm_pinctrl_get(dev);
2129 dev_err(dev, "Failed to get pinctrl\n");
2134 state = pinctrl_lookup_state(p, "ac97-reset");
2135 if (IS_ERR(state)) {
2136 dev_err(dev, "Can't find pinctrl state ac97-reset\n");
2137 return PTR_ERR(state);
2139 cfg->pstate_reset = state;
2141 state = pinctrl_lookup_state(p, "ac97-warm-reset");
2142 if (IS_ERR(state)) {
2143 dev_err(dev, "Can't find pinctrl state ac97-warm-reset\n");
2144 return PTR_ERR(state);
2146 cfg->pstate_warm_reset = state;
2148 state = pinctrl_lookup_state(p, "ac97-running");
2149 if (IS_ERR(state)) {
2150 dev_err(dev, "Can't find pinctrl state ac97-running\n");
2151 return PTR_ERR(state);
2153 cfg->pstate_run = state;
2155 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 0);
2157 dev_err(dev, "Can't find ac97-sync gpio\n");
2160 ret = devm_gpio_request(dev, gpio, "AC97 link sync");
2162 dev_err(dev, "Failed requesting ac97-sync gpio\n");
2165 cfg->gpio_sync = gpio;
2167 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 1);
2169 dev_err(dev, "Can't find ac97-sdata gpio %d\n", gpio);
2172 ret = devm_gpio_request(dev, gpio, "AC97 link sdata");
2174 dev_err(dev, "Failed requesting ac97-sdata gpio\n");
2177 cfg->gpio_sdata = gpio;
2179 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 2);
2181 dev_err(dev, "Can't find ac97-reset gpio\n");
2184 ret = devm_gpio_request(dev, gpio, "AC97 link reset");
2186 dev_err(dev, "Failed requesting ac97-reset gpio\n");
2189 cfg->gpio_reset = gpio;
2194 struct snd_ac97_bus_ops *soc_ac97_ops;
2195 EXPORT_SYMBOL_GPL(soc_ac97_ops);
2197 int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops)
2199 if (ops == soc_ac97_ops)
2202 if (soc_ac97_ops && ops)
2209 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops);
2212 * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions
2214 * This function sets the reset and warm_reset properties of ops and parses
2215 * the device node of pdev to get pinctrl states and gpio numbers to use.
2217 int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops,
2218 struct platform_device *pdev)
2220 struct device *dev = &pdev->dev;
2221 struct snd_ac97_reset_cfg cfg;
2224 ret = snd_soc_ac97_parse_pinctl(dev, &cfg);
2228 ret = snd_soc_set_ac97_ops(ops);
2232 ops->warm_reset = snd_soc_ac97_warm_reset;
2233 ops->reset = snd_soc_ac97_reset;
2235 snd_ac97_rst_cfg = cfg;
2238 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset);
2241 * snd_soc_free_ac97_codec - free AC97 codec device
2242 * @codec: audio codec
2244 * Frees AC97 codec device resources.
2246 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
2248 mutex_lock(&codec->mutex);
2249 #ifdef CONFIG_SND_SOC_AC97_BUS
2250 soc_unregister_ac97_codec(codec);
2252 kfree(codec->ac97->bus);
2255 codec->ac97_created = 0;
2256 mutex_unlock(&codec->mutex);
2258 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
2261 * snd_soc_cnew - create new control
2262 * @_template: control template
2263 * @data: control private data
2264 * @long_name: control long name
2265 * @prefix: control name prefix
2267 * Create a new mixer control from a template control.
2269 * Returns 0 for success, else error.
2271 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2272 void *data, const char *long_name,
2275 struct snd_kcontrol_new template;
2276 struct snd_kcontrol *kcontrol;
2279 memcpy(&template, _template, sizeof(template));
2283 long_name = template.name;
2286 name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
2290 template.name = name;
2292 template.name = long_name;
2295 kcontrol = snd_ctl_new1(&template, data);
2301 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2303 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2304 const struct snd_kcontrol_new *controls, int num_controls,
2305 const char *prefix, void *data)
2309 for (i = 0; i < num_controls; i++) {
2310 const struct snd_kcontrol_new *control = &controls[i];
2311 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2312 control->name, prefix));
2314 dev_err(dev, "ASoC: Failed to add %s: %d\n",
2315 control->name, err);
2323 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
2326 struct snd_card *card = soc_card->snd_card;
2327 struct snd_kcontrol *kctl;
2329 if (unlikely(!name))
2332 list_for_each_entry(kctl, &card->controls, list)
2333 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
2337 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
2340 * snd_soc_add_codec_controls - add an array of controls to a codec.
2341 * Convenience function to add a list of controls. Many codecs were
2342 * duplicating this code.
2344 * @codec: codec to add controls to
2345 * @controls: array of controls to add
2346 * @num_controls: number of elements in the array
2348 * Return 0 for success, else error.
2350 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2351 const struct snd_kcontrol_new *controls, int num_controls)
2353 struct snd_card *card = codec->card->snd_card;
2355 return snd_soc_add_controls(card, codec->dev, controls, num_controls,
2356 codec->name_prefix, &codec->component);
2358 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2361 * snd_soc_add_platform_controls - add an array of controls to a platform.
2362 * Convenience function to add a list of controls.
2364 * @platform: platform to add controls to
2365 * @controls: array of controls to add
2366 * @num_controls: number of elements in the array
2368 * Return 0 for success, else error.
2370 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2371 const struct snd_kcontrol_new *controls, int num_controls)
2373 struct snd_card *card = platform->card->snd_card;
2375 return snd_soc_add_controls(card, platform->dev, controls, num_controls,
2376 NULL, &platform->component);
2378 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2381 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2382 * Convenience function to add a list of controls.
2384 * @soc_card: SoC card to add controls to
2385 * @controls: array of controls to add
2386 * @num_controls: number of elements in the array
2388 * Return 0 for success, else error.
2390 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2391 const struct snd_kcontrol_new *controls, int num_controls)
2393 struct snd_card *card = soc_card->snd_card;
2395 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2398 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2401 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2402 * Convienience function to add a list of controls.
2404 * @dai: DAI to add controls to
2405 * @controls: array of controls to add
2406 * @num_controls: number of elements in the array
2408 * Return 0 for success, else error.
2410 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2411 const struct snd_kcontrol_new *controls, int num_controls)
2413 struct snd_card *card = dai->card->snd_card;
2415 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2418 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2421 * snd_soc_info_enum_double - enumerated double mixer info callback
2422 * @kcontrol: mixer control
2423 * @uinfo: control element information
2425 * Callback to provide information about a double enumerated
2428 * Returns 0 for success.
2430 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2431 struct snd_ctl_elem_info *uinfo)
2433 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2435 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2436 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2437 uinfo->value.enumerated.items = e->items;
2439 if (uinfo->value.enumerated.item >= e->items)
2440 uinfo->value.enumerated.item = e->items - 1;
2441 strlcpy(uinfo->value.enumerated.name,
2442 e->texts[uinfo->value.enumerated.item],
2443 sizeof(uinfo->value.enumerated.name));
2446 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2449 * snd_soc_get_enum_double - enumerated double mixer get callback
2450 * @kcontrol: mixer control
2451 * @ucontrol: control element information
2453 * Callback to get the value of a double enumerated mixer.
2455 * Returns 0 for success.
2457 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2458 struct snd_ctl_elem_value *ucontrol)
2460 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2461 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2462 unsigned int val, item;
2463 unsigned int reg_val;
2466 ret = snd_soc_component_read(component, e->reg, ®_val);
2469 val = (reg_val >> e->shift_l) & e->mask;
2470 item = snd_soc_enum_val_to_item(e, val);
2471 ucontrol->value.enumerated.item[0] = item;
2472 if (e->shift_l != e->shift_r) {
2473 val = (reg_val >> e->shift_l) & e->mask;
2474 item = snd_soc_enum_val_to_item(e, val);
2475 ucontrol->value.enumerated.item[1] = item;
2480 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2483 * snd_soc_put_enum_double - enumerated double mixer put callback
2484 * @kcontrol: mixer control
2485 * @ucontrol: control element information
2487 * Callback to set the value of a double enumerated mixer.
2489 * Returns 0 for success.
2491 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2492 struct snd_ctl_elem_value *ucontrol)
2494 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2495 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2496 unsigned int *item = ucontrol->value.enumerated.item;
2500 if (item[0] >= e->items)
2502 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
2503 mask = e->mask << e->shift_l;
2504 if (e->shift_l != e->shift_r) {
2505 if (item[1] >= e->items)
2507 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
2508 mask |= e->mask << e->shift_r;
2511 return snd_soc_component_update_bits(component, e->reg, mask, val);
2513 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2516 * snd_soc_read_signed - Read a codec register and interprete as signed value
2517 * @component: component
2518 * @reg: Register to read
2519 * @mask: Mask to use after shifting the register value
2520 * @shift: Right shift of register value
2521 * @sign_bit: Bit that describes if a number is negative or not.
2522 * @signed_val: Pointer to where the read value should be stored
2524 * This functions reads a codec register. The register value is shifted right
2525 * by 'shift' bits and masked with the given 'mask'. Afterwards it translates
2526 * the given registervalue into a signed integer if sign_bit is non-zero.
2528 * Returns 0 on sucess, otherwise an error value
2530 static int snd_soc_read_signed(struct snd_soc_component *component,
2531 unsigned int reg, unsigned int mask, unsigned int shift,
2532 unsigned int sign_bit, int *signed_val)
2537 ret = snd_soc_component_read(component, reg, &val);
2541 val = (val >> shift) & mask;
2548 /* non-negative number */
2549 if (!(val & BIT(sign_bit))) {
2557 * The register most probably does not contain a full-sized int.
2558 * Instead we have an arbitrary number of bits in a signed
2559 * representation which has to be translated into a full-sized int.
2560 * This is done by filling up all bits above the sign-bit.
2562 ret |= ~((int)(BIT(sign_bit) - 1));
2570 * snd_soc_info_volsw - single mixer info callback
2571 * @kcontrol: mixer control
2572 * @uinfo: control element information
2574 * Callback to provide information about a single mixer control, or a double
2575 * mixer control that spans 2 registers.
2577 * Returns 0 for success.
2579 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2580 struct snd_ctl_elem_info *uinfo)
2582 struct soc_mixer_control *mc =
2583 (struct soc_mixer_control *)kcontrol->private_value;
2586 if (!mc->platform_max)
2587 mc->platform_max = mc->max;
2588 platform_max = mc->platform_max;
2590 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2591 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2593 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2595 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2596 uinfo->value.integer.min = 0;
2597 uinfo->value.integer.max = platform_max - mc->min;
2600 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2603 * snd_soc_get_volsw - single mixer get callback
2604 * @kcontrol: mixer control
2605 * @ucontrol: control element information
2607 * Callback to get the value of a single mixer control, or a double mixer
2608 * control that spans 2 registers.
2610 * Returns 0 for success.
2612 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2613 struct snd_ctl_elem_value *ucontrol)
2615 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2616 struct soc_mixer_control *mc =
2617 (struct soc_mixer_control *)kcontrol->private_value;
2618 unsigned int reg = mc->reg;
2619 unsigned int reg2 = mc->rreg;
2620 unsigned int shift = mc->shift;
2621 unsigned int rshift = mc->rshift;
2624 int sign_bit = mc->sign_bit;
2625 unsigned int mask = (1 << fls(max)) - 1;
2626 unsigned int invert = mc->invert;
2631 mask = BIT(sign_bit + 1) - 1;
2633 ret = snd_soc_read_signed(component, reg, mask, shift, sign_bit, &val);
2637 ucontrol->value.integer.value[0] = val - min;
2639 ucontrol->value.integer.value[0] =
2640 max - ucontrol->value.integer.value[0];
2642 if (snd_soc_volsw_is_stereo(mc)) {
2644 ret = snd_soc_read_signed(component, reg, mask, rshift,
2647 ret = snd_soc_read_signed(component, reg2, mask, shift,
2652 ucontrol->value.integer.value[1] = val - min;
2654 ucontrol->value.integer.value[1] =
2655 max - ucontrol->value.integer.value[1];
2660 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2663 * snd_soc_put_volsw - single mixer put callback
2664 * @kcontrol: mixer control
2665 * @ucontrol: control element information
2667 * Callback to set the value of a single mixer control, or a double mixer
2668 * control that spans 2 registers.
2670 * Returns 0 for success.
2672 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2673 struct snd_ctl_elem_value *ucontrol)
2675 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2676 struct soc_mixer_control *mc =
2677 (struct soc_mixer_control *)kcontrol->private_value;
2678 unsigned int reg = mc->reg;
2679 unsigned int reg2 = mc->rreg;
2680 unsigned int shift = mc->shift;
2681 unsigned int rshift = mc->rshift;
2684 unsigned int sign_bit = mc->sign_bit;
2685 unsigned int mask = (1 << fls(max)) - 1;
2686 unsigned int invert = mc->invert;
2688 bool type_2r = false;
2689 unsigned int val2 = 0;
2690 unsigned int val, val_mask;
2693 mask = BIT(sign_bit + 1) - 1;
2695 val = ((ucontrol->value.integer.value[0] + min) & mask);
2698 val_mask = mask << shift;
2700 if (snd_soc_volsw_is_stereo(mc)) {
2701 val2 = ((ucontrol->value.integer.value[1] + min) & mask);
2705 val_mask |= mask << rshift;
2706 val |= val2 << rshift;
2708 val2 = val2 << shift;
2712 err = snd_soc_component_update_bits(component, reg, val_mask, val);
2717 err = snd_soc_component_update_bits(component, reg2, val_mask,
2722 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2725 * snd_soc_get_volsw_sx - single mixer get callback
2726 * @kcontrol: mixer control
2727 * @ucontrol: control element information
2729 * Callback to get the value of a single mixer control, or a double mixer
2730 * control that spans 2 registers.
2732 * Returns 0 for success.
2734 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
2735 struct snd_ctl_elem_value *ucontrol)
2737 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2738 struct soc_mixer_control *mc =
2739 (struct soc_mixer_control *)kcontrol->private_value;
2740 unsigned int reg = mc->reg;
2741 unsigned int reg2 = mc->rreg;
2742 unsigned int shift = mc->shift;
2743 unsigned int rshift = mc->rshift;
2746 int mask = (1 << (fls(min + max) - 1)) - 1;
2750 ret = snd_soc_component_read(component, reg, &val);
2754 ucontrol->value.integer.value[0] = ((val >> shift) - min) & mask;
2756 if (snd_soc_volsw_is_stereo(mc)) {
2757 ret = snd_soc_component_read(component, reg2, &val);
2761 val = ((val >> rshift) - min) & mask;
2762 ucontrol->value.integer.value[1] = val;
2767 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
2770 * snd_soc_put_volsw_sx - double mixer set callback
2771 * @kcontrol: mixer control
2772 * @uinfo: control element information
2774 * Callback to set the value of a double mixer control that spans 2 registers.
2776 * Returns 0 for success.
2778 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
2779 struct snd_ctl_elem_value *ucontrol)
2781 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2782 struct soc_mixer_control *mc =
2783 (struct soc_mixer_control *)kcontrol->private_value;
2785 unsigned int reg = mc->reg;
2786 unsigned int reg2 = mc->rreg;
2787 unsigned int shift = mc->shift;
2788 unsigned int rshift = mc->rshift;
2791 int mask = (1 << (fls(min + max) - 1)) - 1;
2793 unsigned int val, val_mask, val2 = 0;
2795 val_mask = mask << shift;
2796 val = (ucontrol->value.integer.value[0] + min) & mask;
2799 err = snd_soc_component_update_bits(component, reg, val_mask, val);
2803 if (snd_soc_volsw_is_stereo(mc)) {
2804 val_mask = mask << rshift;
2805 val2 = (ucontrol->value.integer.value[1] + min) & mask;
2806 val2 = val2 << rshift;
2808 err = snd_soc_component_update_bits(component, reg2, val_mask,
2813 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
2816 * snd_soc_info_volsw_s8 - signed mixer info callback
2817 * @kcontrol: mixer control
2818 * @uinfo: control element information
2820 * Callback to provide information about a signed mixer control.
2822 * Returns 0 for success.
2824 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2825 struct snd_ctl_elem_info *uinfo)
2827 struct soc_mixer_control *mc =
2828 (struct soc_mixer_control *)kcontrol->private_value;
2832 if (!mc->platform_max)
2833 mc->platform_max = mc->max;
2834 platform_max = mc->platform_max;
2836 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2838 uinfo->value.integer.min = 0;
2839 uinfo->value.integer.max = platform_max - min;
2842 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2845 * snd_soc_get_volsw_s8 - signed mixer get callback
2846 * @kcontrol: mixer control
2847 * @ucontrol: control element information
2849 * Callback to get the value of a signed mixer control.
2851 * Returns 0 for success.
2853 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2854 struct snd_ctl_elem_value *ucontrol)
2856 struct soc_mixer_control *mc =
2857 (struct soc_mixer_control *)kcontrol->private_value;
2858 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2859 unsigned int reg = mc->reg;
2864 ret = snd_soc_component_read(component, reg, &val);
2868 ucontrol->value.integer.value[0] =
2869 ((signed char)(val & 0xff))-min;
2870 ucontrol->value.integer.value[1] =
2871 ((signed char)((val >> 8) & 0xff))-min;
2874 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2877 * snd_soc_put_volsw_sgn - signed mixer put callback
2878 * @kcontrol: mixer control
2879 * @ucontrol: control element information
2881 * Callback to set the value of a signed mixer control.
2883 * Returns 0 for success.
2885 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2886 struct snd_ctl_elem_value *ucontrol)
2888 struct soc_mixer_control *mc =
2889 (struct soc_mixer_control *)kcontrol->private_value;
2890 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2891 unsigned int reg = mc->reg;
2895 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2896 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2898 return snd_soc_component_update_bits(component, reg, 0xffff, val);
2900 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2903 * snd_soc_info_volsw_range - single mixer info callback with range.
2904 * @kcontrol: mixer control
2905 * @uinfo: control element information
2907 * Callback to provide information, within a range, about a single
2910 * returns 0 for success.
2912 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
2913 struct snd_ctl_elem_info *uinfo)
2915 struct soc_mixer_control *mc =
2916 (struct soc_mixer_control *)kcontrol->private_value;
2920 if (!mc->platform_max)
2921 mc->platform_max = mc->max;
2922 platform_max = mc->platform_max;
2924 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2925 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2926 uinfo->value.integer.min = 0;
2927 uinfo->value.integer.max = platform_max - min;
2931 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
2934 * snd_soc_put_volsw_range - single mixer put value callback with range.
2935 * @kcontrol: mixer control
2936 * @ucontrol: control element information
2938 * Callback to set the value, within a range, for a single mixer control.
2940 * Returns 0 for success.
2942 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
2943 struct snd_ctl_elem_value *ucontrol)
2945 struct soc_mixer_control *mc =
2946 (struct soc_mixer_control *)kcontrol->private_value;
2947 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2948 unsigned int reg = mc->reg;
2949 unsigned int rreg = mc->rreg;
2950 unsigned int shift = mc->shift;
2953 unsigned int mask = (1 << fls(max)) - 1;
2954 unsigned int invert = mc->invert;
2955 unsigned int val, val_mask;
2958 val = ((ucontrol->value.integer.value[0] + min) & mask);
2961 val_mask = mask << shift;
2964 ret = snd_soc_component_update_bits(component, reg, val_mask, val);
2968 if (snd_soc_volsw_is_stereo(mc)) {
2969 val = ((ucontrol->value.integer.value[1] + min) & mask);
2972 val_mask = mask << shift;
2975 ret = snd_soc_component_update_bits(component, rreg, val_mask,
2981 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
2984 * snd_soc_get_volsw_range - single mixer get callback with range
2985 * @kcontrol: mixer control
2986 * @ucontrol: control element information
2988 * Callback to get the value, within a range, of a single mixer control.
2990 * Returns 0 for success.
2992 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
2993 struct snd_ctl_elem_value *ucontrol)
2995 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2996 struct soc_mixer_control *mc =
2997 (struct soc_mixer_control *)kcontrol->private_value;
2998 unsigned int reg = mc->reg;
2999 unsigned int rreg = mc->rreg;
3000 unsigned int shift = mc->shift;
3003 unsigned int mask = (1 << fls(max)) - 1;
3004 unsigned int invert = mc->invert;
3008 ret = snd_soc_component_read(component, reg, &val);
3012 ucontrol->value.integer.value[0] = (val >> shift) & mask;
3014 ucontrol->value.integer.value[0] =
3015 max - ucontrol->value.integer.value[0];
3016 ucontrol->value.integer.value[0] =
3017 ucontrol->value.integer.value[0] - min;
3019 if (snd_soc_volsw_is_stereo(mc)) {
3020 ret = snd_soc_component_read(component, rreg, &val);
3024 ucontrol->value.integer.value[1] = (val >> shift) & mask;
3026 ucontrol->value.integer.value[1] =
3027 max - ucontrol->value.integer.value[1];
3028 ucontrol->value.integer.value[1] =
3029 ucontrol->value.integer.value[1] - min;
3034 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
3037 * snd_soc_limit_volume - Set new limit to an existing volume control.
3039 * @codec: where to look for the control
3040 * @name: Name of the control
3041 * @max: new maximum limit
3043 * Return 0 for success, else error.
3045 int snd_soc_limit_volume(struct snd_soc_codec *codec,
3046 const char *name, int max)
3048 struct snd_card *card = codec->card->snd_card;
3049 struct snd_kcontrol *kctl;
3050 struct soc_mixer_control *mc;
3054 /* Sanity check for name and max */
3055 if (unlikely(!name || max <= 0))
3058 list_for_each_entry(kctl, &card->controls, list) {
3059 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
3065 mc = (struct soc_mixer_control *)kctl->private_value;
3066 if (max <= mc->max) {
3067 mc->platform_max = max;
3073 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
3075 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
3076 struct snd_ctl_elem_info *uinfo)
3078 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3079 struct soc_bytes *params = (void *)kcontrol->private_value;
3081 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
3082 uinfo->count = params->num_regs * component->val_bytes;
3086 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
3088 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
3089 struct snd_ctl_elem_value *ucontrol)
3091 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3092 struct soc_bytes *params = (void *)kcontrol->private_value;
3095 if (component->regmap)
3096 ret = regmap_raw_read(component->regmap, params->base,
3097 ucontrol->value.bytes.data,
3098 params->num_regs * component->val_bytes);
3102 /* Hide any masked bytes to ensure consistent data reporting */
3103 if (ret == 0 && params->mask) {
3104 switch (component->val_bytes) {
3106 ucontrol->value.bytes.data[0] &= ~params->mask;
3109 ((u16 *)(&ucontrol->value.bytes.data))[0]
3110 &= cpu_to_be16(~params->mask);
3113 ((u32 *)(&ucontrol->value.bytes.data))[0]
3114 &= cpu_to_be32(~params->mask);
3123 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
3125 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
3126 struct snd_ctl_elem_value *ucontrol)
3128 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3129 struct soc_bytes *params = (void *)kcontrol->private_value;
3131 unsigned int val, mask;
3134 if (!component->regmap)
3137 len = params->num_regs * component->val_bytes;
3139 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
3144 * If we've got a mask then we need to preserve the register
3145 * bits. We shouldn't modify the incoming data so take a
3149 ret = regmap_read(component->regmap, params->base, &val);
3153 val &= params->mask;
3155 switch (component->val_bytes) {
3157 ((u8 *)data)[0] &= ~params->mask;
3158 ((u8 *)data)[0] |= val;
3161 mask = ~params->mask;
3162 ret = regmap_parse_val(component->regmap,
3167 ((u16 *)data)[0] &= mask;
3169 ret = regmap_parse_val(component->regmap,
3174 ((u16 *)data)[0] |= val;
3177 mask = ~params->mask;
3178 ret = regmap_parse_val(component->regmap,
3183 ((u32 *)data)[0] &= mask;
3185 ret = regmap_parse_val(component->regmap,
3190 ((u32 *)data)[0] |= val;
3198 ret = regmap_raw_write(component->regmap, params->base,
3206 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
3209 * snd_soc_info_xr_sx - signed multi register info callback
3210 * @kcontrol: mreg control
3211 * @uinfo: control element information
3213 * Callback to provide information of a control that can
3214 * span multiple codec registers which together
3215 * forms a single signed value in a MSB/LSB manner.
3217 * Returns 0 for success.
3219 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
3220 struct snd_ctl_elem_info *uinfo)
3222 struct soc_mreg_control *mc =
3223 (struct soc_mreg_control *)kcontrol->private_value;
3224 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3226 uinfo->value.integer.min = mc->min;
3227 uinfo->value.integer.max = mc->max;
3231 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
3234 * snd_soc_get_xr_sx - signed multi register get callback
3235 * @kcontrol: mreg control
3236 * @ucontrol: control element information
3238 * Callback to get the value of a control that can span
3239 * multiple codec registers which together forms a single
3240 * signed value in a MSB/LSB manner. The control supports
3241 * specifying total no of bits used to allow for bitfields
3242 * across the multiple codec registers.
3244 * Returns 0 for success.
3246 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
3247 struct snd_ctl_elem_value *ucontrol)
3249 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3250 struct soc_mreg_control *mc =
3251 (struct soc_mreg_control *)kcontrol->private_value;
3252 unsigned int regbase = mc->regbase;
3253 unsigned int regcount = mc->regcount;
3254 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
3255 unsigned int regwmask = (1<<regwshift)-1;
3256 unsigned int invert = mc->invert;
3257 unsigned long mask = (1UL<<mc->nbits)-1;
3261 unsigned int regval;
3265 for (i = 0; i < regcount; i++) {
3266 ret = snd_soc_component_read(component, regbase+i, ®val);
3269 val |= (regval & regwmask) << (regwshift*(regcount-i-1));
3272 if (min < 0 && val > max)
3276 ucontrol->value.integer.value[0] = val;
3280 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
3283 * snd_soc_put_xr_sx - signed multi register get callback
3284 * @kcontrol: mreg control
3285 * @ucontrol: control element information
3287 * Callback to set the value of a control that can span
3288 * multiple codec registers which together forms a single
3289 * signed value in a MSB/LSB manner. The control supports
3290 * specifying total no of bits used to allow for bitfields
3291 * across the multiple codec registers.
3293 * Returns 0 for success.
3295 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
3296 struct snd_ctl_elem_value *ucontrol)
3298 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3299 struct soc_mreg_control *mc =
3300 (struct soc_mreg_control *)kcontrol->private_value;
3301 unsigned int regbase = mc->regbase;
3302 unsigned int regcount = mc->regcount;
3303 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
3304 unsigned int regwmask = (1<<regwshift)-1;
3305 unsigned int invert = mc->invert;
3306 unsigned long mask = (1UL<<mc->nbits)-1;
3308 long val = ucontrol->value.integer.value[0];
3309 unsigned int i, regval, regmask;
3315 for (i = 0; i < regcount; i++) {
3316 regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
3317 regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
3318 err = snd_soc_component_update_bits(component, regbase+i,
3326 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
3329 * snd_soc_get_strobe - strobe get callback
3330 * @kcontrol: mixer control
3331 * @ucontrol: control element information
3333 * Callback get the value of a strobe mixer control.
3335 * Returns 0 for success.
3337 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
3338 struct snd_ctl_elem_value *ucontrol)
3340 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3341 struct soc_mixer_control *mc =
3342 (struct soc_mixer_control *)kcontrol->private_value;
3343 unsigned int reg = mc->reg;
3344 unsigned int shift = mc->shift;
3345 unsigned int mask = 1 << shift;
3346 unsigned int invert = mc->invert != 0;
3350 ret = snd_soc_component_read(component, reg, &val);
3356 if (shift != 0 && val != 0)
3358 ucontrol->value.enumerated.item[0] = val ^ invert;
3362 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
3365 * snd_soc_put_strobe - strobe put callback
3366 * @kcontrol: mixer control
3367 * @ucontrol: control element information
3369 * Callback strobe a register bit to high then low (or the inverse)
3370 * in one pass of a single mixer enum control.
3372 * Returns 1 for success.
3374 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
3375 struct snd_ctl_elem_value *ucontrol)
3377 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3378 struct soc_mixer_control *mc =
3379 (struct soc_mixer_control *)kcontrol->private_value;
3380 unsigned int reg = mc->reg;
3381 unsigned int shift = mc->shift;
3382 unsigned int mask = 1 << shift;
3383 unsigned int invert = mc->invert != 0;
3384 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
3385 unsigned int val1 = (strobe ^ invert) ? mask : 0;
3386 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
3389 err = snd_soc_component_update_bits(component, reg, mask, val1);
3393 return snd_soc_component_update_bits(component, reg, mask, val2);
3395 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);
3398 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3400 * @clk_id: DAI specific clock ID
3401 * @freq: new clock frequency in Hz
3402 * @dir: new clock direction - input/output.
3404 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3406 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
3407 unsigned int freq, int dir)
3409 if (dai->driver && dai->driver->ops->set_sysclk)
3410 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
3411 else if (dai->codec && dai->codec->driver->set_sysclk)
3412 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
3417 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
3420 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3422 * @clk_id: DAI specific clock ID
3423 * @source: Source for the clock
3424 * @freq: new clock frequency in Hz
3425 * @dir: new clock direction - input/output.
3427 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3429 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
3430 int source, unsigned int freq, int dir)
3432 if (codec->driver->set_sysclk)
3433 return codec->driver->set_sysclk(codec, clk_id, source,
3438 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
3441 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3443 * @div_id: DAI specific clock divider ID
3444 * @div: new clock divisor.
3446 * Configures the clock dividers. This is used to derive the best DAI bit and
3447 * frame clocks from the system or master clock. It's best to set the DAI bit
3448 * and frame clocks as low as possible to save system power.
3450 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
3451 int div_id, int div)
3453 if (dai->driver && dai->driver->ops->set_clkdiv)
3454 return dai->driver->ops->set_clkdiv(dai, div_id, div);
3458 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
3461 * snd_soc_dai_set_pll - configure DAI PLL.
3463 * @pll_id: DAI specific PLL ID
3464 * @source: DAI specific source for the PLL
3465 * @freq_in: PLL input clock frequency in Hz
3466 * @freq_out: requested PLL output clock frequency in Hz
3468 * Configures and enables PLL to generate output clock based on input clock.
3470 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
3471 unsigned int freq_in, unsigned int freq_out)
3473 if (dai->driver && dai->driver->ops->set_pll)
3474 return dai->driver->ops->set_pll(dai, pll_id, source,
3476 else if (dai->codec && dai->codec->driver->set_pll)
3477 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
3482 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
3485 * snd_soc_codec_set_pll - configure codec 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_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
3495 unsigned int freq_in, unsigned int freq_out)
3497 if (codec->driver->set_pll)
3498 return codec->driver->set_pll(codec, pll_id, source,
3503 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
3506 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
3508 * @ratio Ratio of BCLK to Sample rate.
3510 * Configures the DAI for a preset BCLK to sample rate ratio.
3512 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
3514 if (dai->driver && dai->driver->ops->set_bclk_ratio)
3515 return dai->driver->ops->set_bclk_ratio(dai, ratio);
3519 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);
3522 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3524 * @fmt: SND_SOC_DAIFMT_ format value.
3526 * Configures the DAI hardware format and clocking.
3528 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
3530 if (dai->driver == NULL)
3532 if (dai->driver->ops->set_fmt == NULL)
3534 return dai->driver->ops->set_fmt(dai, fmt);
3536 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
3539 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
3540 * @slots: Number of slots in use.
3541 * @tx_mask: bitmask representing active TX slots.
3542 * @rx_mask: bitmask representing active RX slots.
3544 * Generates the TDM tx and rx slot default masks for DAI.
3546 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
3547 unsigned int *tx_mask,
3548 unsigned int *rx_mask)
3550 if (*tx_mask || *rx_mask)
3556 *tx_mask = (1 << slots) - 1;
3557 *rx_mask = (1 << slots) - 1;
3563 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3565 * @tx_mask: bitmask representing active TX slots.
3566 * @rx_mask: bitmask representing active RX slots.
3567 * @slots: Number of slots in use.
3568 * @slot_width: Width in bits for each slot.
3570 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3573 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
3574 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3576 if (dai->driver && dai->driver->ops->xlate_tdm_slot_mask)
3577 dai->driver->ops->xlate_tdm_slot_mask(slots,
3578 &tx_mask, &rx_mask);
3580 snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
3582 if (dai->driver && dai->driver->ops->set_tdm_slot)
3583 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3588 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3591 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3593 * @tx_num: how many TX channels
3594 * @tx_slot: pointer to an array which imply the TX slot number channel
3596 * @rx_num: how many RX channels
3597 * @rx_slot: pointer to an array which imply the RX slot number channel
3600 * configure the relationship between channel number and TDM slot number.
3602 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3603 unsigned int tx_num, unsigned int *tx_slot,
3604 unsigned int rx_num, unsigned int *rx_slot)
3606 if (dai->driver && dai->driver->ops->set_channel_map)
3607 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3612 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3615 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3617 * @tristate: tristate enable
3619 * Tristates the DAI so that others can use it.
3621 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3623 if (dai->driver && dai->driver->ops->set_tristate)
3624 return dai->driver->ops->set_tristate(dai, tristate);
3628 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3631 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3633 * @mute: mute enable
3634 * @direction: stream to mute
3636 * Mutes the DAI DAC.
3638 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
3644 if (dai->driver->ops->mute_stream)
3645 return dai->driver->ops->mute_stream(dai, mute, direction);
3646 else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
3647 dai->driver->ops->digital_mute)
3648 return dai->driver->ops->digital_mute(dai, mute);
3652 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3655 * snd_soc_register_card - Register a card with the ASoC core
3657 * @card: Card to register
3660 int snd_soc_register_card(struct snd_soc_card *card)
3664 if (!card->name || !card->dev)
3667 for (i = 0; i < card->num_links; i++) {
3668 struct snd_soc_dai_link *link = &card->dai_link[i];
3671 * Codec must be specified by 1 of name or OF node,
3672 * not both or neither.
3674 if (!!link->codec_name == !!link->codec_of_node) {
3676 "ASoC: Neither/both codec name/of_node are set for %s\n",
3680 /* Codec DAI name must be specified */
3681 if (!link->codec_dai_name) {
3683 "ASoC: codec_dai_name not set for %s\n",
3689 * Platform may be specified by either name or OF node, but
3690 * can be left unspecified, and a dummy platform will be used.
3692 if (link->platform_name && link->platform_of_node) {
3694 "ASoC: Both platform name/of_node are set for %s\n",
3700 * CPU device may be specified by either name or OF node, but
3701 * can be left unspecified, and will be matched based on DAI
3704 if (link->cpu_name && link->cpu_of_node) {
3706 "ASoC: Neither/both cpu name/of_node are set for %s\n",
3711 * At least one of CPU DAI name or CPU device name/node must be
3714 if (!link->cpu_dai_name &&
3715 !(link->cpu_name || link->cpu_of_node)) {
3717 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
3723 dev_set_drvdata(card->dev, card);
3725 snd_soc_initialize_card_lists(card);
3727 soc_init_card_debugfs(card);
3729 card->rtd = devm_kzalloc(card->dev,
3730 sizeof(struct snd_soc_pcm_runtime) *
3731 (card->num_links + card->num_aux_devs),
3733 if (card->rtd == NULL)
3736 card->rtd_aux = &card->rtd[card->num_links];
3738 for (i = 0; i < card->num_links; i++)
3739 card->rtd[i].dai_link = &card->dai_link[i];
3741 INIT_LIST_HEAD(&card->list);
3742 INIT_LIST_HEAD(&card->dapm_dirty);
3743 card->instantiated = 0;
3744 mutex_init(&card->mutex);
3745 mutex_init(&card->dapm_mutex);
3747 ret = snd_soc_instantiate_card(card);
3749 soc_cleanup_card_debugfs(card);
3751 /* deactivate pins to sleep state */
3752 for (i = 0; i < card->num_rtd; i++) {
3753 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
3754 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
3755 if (!codec_dai->active)
3756 pinctrl_pm_select_sleep_state(codec_dai->dev);
3757 if (!cpu_dai->active)
3758 pinctrl_pm_select_sleep_state(cpu_dai->dev);
3763 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3766 * snd_soc_unregister_card - Unregister a card with the ASoC core
3768 * @card: Card to unregister
3771 int snd_soc_unregister_card(struct snd_soc_card *card)
3773 if (card->instantiated)
3774 soc_cleanup_card_resources(card);
3775 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
3779 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3782 * Simplify DAI link configuration by removing ".-1" from device names
3783 * and sanitizing names.
3785 static char *fmt_single_name(struct device *dev, int *id)
3787 char *found, name[NAME_SIZE];
3790 if (dev_name(dev) == NULL)
3793 strlcpy(name, dev_name(dev), NAME_SIZE);
3795 /* are we a "%s.%d" name (platform and SPI components) */
3796 found = strstr(name, dev->driver->name);
3799 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3801 /* discard ID from name if ID == -1 */
3803 found[strlen(dev->driver->name)] = '\0';
3807 /* I2C component devices are named "bus-addr" */
3808 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3809 char tmp[NAME_SIZE];
3811 /* create unique ID number from I2C addr and bus */
3812 *id = ((id1 & 0xffff) << 16) + id2;
3814 /* sanitize component name for DAI link creation */
3815 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3816 strlcpy(name, tmp, NAME_SIZE);
3821 return kstrdup(name, GFP_KERNEL);
3825 * Simplify DAI link naming for single devices with multiple DAIs by removing
3826 * any ".-1" and using the DAI name (instead of device name).
3828 static inline char *fmt_multiple_name(struct device *dev,
3829 struct snd_soc_dai_driver *dai_drv)
3831 if (dai_drv->name == NULL) {
3833 "ASoC: error - multiple DAI %s registered with no name\n",
3838 return kstrdup(dai_drv->name, GFP_KERNEL);
3842 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
3844 * @component: The component for which the DAIs should be unregistered
3846 static void snd_soc_unregister_dais(struct snd_soc_component *component)
3848 struct snd_soc_dai *dai, *_dai;
3850 list_for_each_entry_safe(dai, _dai, &component->dai_list, list) {
3851 dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
3853 list_del(&dai->list);
3860 * snd_soc_register_dais - Register a DAI with the ASoC core
3862 * @component: The component the DAIs are registered for
3863 * @codec: The CODEC that the DAIs are registered for, NULL if the component is
3865 * @dai_drv: DAI driver to use for the DAIs
3866 * @count: Number of DAIs
3867 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
3870 static int snd_soc_register_dais(struct snd_soc_component *component,
3871 struct snd_soc_codec *codec, struct snd_soc_dai_driver *dai_drv,
3872 size_t count, bool legacy_dai_naming)
3874 struct device *dev = component->dev;
3875 struct snd_soc_dai *dai;
3879 dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
3881 for (i = 0; i < count; i++) {
3883 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3890 * Back in the old days when we still had component-less DAIs,
3891 * instead of having a static name, component-less DAIs would
3892 * inherit the name of the parent device so it is possible to
3893 * register multiple instances of the DAI. We still need to keep
3894 * the same naming style even though those DAIs are not
3895 * component-less anymore.
3897 if (count == 1 && legacy_dai_naming) {
3898 dai->name = fmt_single_name(dev, &dai->id);
3900 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3902 dai->id = dai_drv[i].id;
3906 if (dai->name == NULL) {
3912 dai->component = component;
3915 dai->driver = &dai_drv[i];
3916 dai->dapm.dev = dev;
3917 if (!dai->driver->ops)
3918 dai->driver->ops = &null_dai_ops;
3921 dai->dapm.idle_bias_off = 1;
3923 list_add(&dai->list, &component->dai_list);
3925 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
3931 snd_soc_unregister_dais(component);
3937 * snd_soc_register_component - Register a component with the ASoC core
3941 __snd_soc_register_component(struct device *dev,
3942 struct snd_soc_component *cmpnt,
3943 const struct snd_soc_component_driver *cmpnt_drv,
3944 struct snd_soc_codec *codec,
3945 struct snd_soc_dai_driver *dai_drv,
3946 int num_dai, bool allow_single_dai)
3950 dev_dbg(dev, "component register %s\n", dev_name(dev));
3953 dev_err(dev, "ASoC: Failed to connecting component\n");
3957 mutex_init(&cmpnt->io_mutex);
3959 cmpnt->name = fmt_single_name(dev, &cmpnt->id);
3961 dev_err(dev, "ASoC: Failed to simplifying name\n");
3966 cmpnt->driver = cmpnt_drv;
3967 cmpnt->dai_drv = dai_drv;
3968 cmpnt->num_dai = num_dai;
3969 INIT_LIST_HEAD(&cmpnt->dai_list);
3971 ret = snd_soc_register_dais(cmpnt, codec, dai_drv, num_dai,
3974 dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret);
3975 goto error_component_name;
3978 mutex_lock(&client_mutex);
3979 list_add(&cmpnt->list, &component_list);
3980 mutex_unlock(&client_mutex);
3982 dev_dbg(cmpnt->dev, "ASoC: Registered component '%s'\n", cmpnt->name);
3986 error_component_name:
3992 int snd_soc_register_component(struct device *dev,
3993 const struct snd_soc_component_driver *cmpnt_drv,
3994 struct snd_soc_dai_driver *dai_drv,
3997 struct snd_soc_component *cmpnt;
3999 cmpnt = devm_kzalloc(dev, sizeof(*cmpnt), GFP_KERNEL);
4001 dev_err(dev, "ASoC: Failed to allocate memory\n");
4005 cmpnt->ignore_pmdown_time = true;
4006 cmpnt->registered_as_component = true;
4008 return __snd_soc_register_component(dev, cmpnt, cmpnt_drv, NULL,
4009 dai_drv, num_dai, true);
4011 EXPORT_SYMBOL_GPL(snd_soc_register_component);
4013 static void __snd_soc_unregister_component(struct snd_soc_component *cmpnt)
4015 snd_soc_unregister_dais(cmpnt);
4017 mutex_lock(&client_mutex);
4018 list_del(&cmpnt->list);
4019 mutex_unlock(&client_mutex);
4021 dev_dbg(cmpnt->dev, "ASoC: Unregistered component '%s'\n", cmpnt->name);
4026 * snd_soc_unregister_component - Unregister a component from the ASoC core
4029 void snd_soc_unregister_component(struct device *dev)
4031 struct snd_soc_component *cmpnt;
4033 list_for_each_entry(cmpnt, &component_list, list) {
4034 if (dev == cmpnt->dev && cmpnt->registered_as_component)
4040 __snd_soc_unregister_component(cmpnt);
4042 EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
4044 static int snd_soc_platform_drv_write(struct snd_soc_component *component,
4045 unsigned int reg, unsigned int val)
4047 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
4049 return platform->driver->write(platform, reg, val);
4052 static int snd_soc_platform_drv_read(struct snd_soc_component *component,
4053 unsigned int reg, unsigned int *val)
4055 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
4057 *val = platform->driver->read(platform, reg);
4063 * snd_soc_add_platform - Add a platform to the ASoC core
4064 * @dev: The parent device for the platform
4065 * @platform: The platform to add
4066 * @platform_driver: The driver for the platform
4068 int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
4069 const struct snd_soc_platform_driver *platform_drv)
4073 /* create platform component name */
4074 platform->name = fmt_single_name(dev, &platform->id);
4075 if (platform->name == NULL)
4078 platform->dev = dev;
4079 platform->driver = platform_drv;
4080 platform->dapm.dev = dev;
4081 platform->dapm.platform = platform;
4082 platform->dapm.component = &platform->component;
4083 platform->dapm.stream_event = platform_drv->stream_event;
4084 if (platform_drv->write)
4085 platform->component.write = snd_soc_platform_drv_write;
4086 if (platform_drv->read)
4087 platform->component.read = snd_soc_platform_drv_read;
4089 /* register component */
4090 ret = __snd_soc_register_component(dev, &platform->component,
4091 &platform_drv->component_driver,
4092 NULL, NULL, 0, false);
4094 dev_err(platform->component.dev,
4095 "ASoC: Failed to register component: %d\n", ret);
4099 mutex_lock(&client_mutex);
4100 list_add(&platform->list, &platform_list);
4101 mutex_unlock(&client_mutex);
4103 dev_dbg(dev, "ASoC: Registered platform '%s'\n", platform->name);
4107 EXPORT_SYMBOL_GPL(snd_soc_add_platform);
4110 * snd_soc_register_platform - Register a platform with the ASoC core
4112 * @platform: platform to register
4114 int snd_soc_register_platform(struct device *dev,
4115 const struct snd_soc_platform_driver *platform_drv)
4117 struct snd_soc_platform *platform;
4120 dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
4122 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
4123 if (platform == NULL)
4126 ret = snd_soc_add_platform(dev, platform, platform_drv);
4132 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
4135 * snd_soc_remove_platform - Remove a platform from the ASoC core
4136 * @platform: the platform to remove
4138 void snd_soc_remove_platform(struct snd_soc_platform *platform)
4140 __snd_soc_unregister_component(&platform->component);
4142 mutex_lock(&client_mutex);
4143 list_del(&platform->list);
4144 mutex_unlock(&client_mutex);
4146 dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
4148 kfree(platform->name);
4150 EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
4152 struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
4154 struct snd_soc_platform *platform;
4156 list_for_each_entry(platform, &platform_list, list) {
4157 if (dev == platform->dev)
4163 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
4166 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
4168 * @platform: platform to unregister
4170 void snd_soc_unregister_platform(struct device *dev)
4172 struct snd_soc_platform *platform;
4174 platform = snd_soc_lookup_platform(dev);
4178 snd_soc_remove_platform(platform);
4181 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
4183 static u64 codec_format_map[] = {
4184 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
4185 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
4186 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
4187 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
4188 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
4189 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
4190 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4191 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4192 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
4193 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
4194 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
4195 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
4196 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
4197 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
4198 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
4199 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
4202 /* Fix up the DAI formats for endianness: codecs don't actually see
4203 * the endianness of the data but we're using the CPU format
4204 * definitions which do need to include endianness so we ensure that
4205 * codec DAIs always have both big and little endian variants set.
4207 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
4211 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
4212 if (stream->formats & codec_format_map[i])
4213 stream->formats |= codec_format_map[i];
4216 static int snd_soc_codec_drv_write(struct snd_soc_component *component,
4217 unsigned int reg, unsigned int val)
4219 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
4221 return codec->driver->write(codec, reg, val);
4224 static int snd_soc_codec_drv_read(struct snd_soc_component *component,
4225 unsigned int reg, unsigned int *val)
4227 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
4229 *val = codec->driver->read(codec, reg);
4235 * snd_soc_register_codec - Register a codec with the ASoC core
4237 * @codec: codec to register
4239 int snd_soc_register_codec(struct device *dev,
4240 const struct snd_soc_codec_driver *codec_drv,
4241 struct snd_soc_dai_driver *dai_drv,
4244 struct snd_soc_codec *codec;
4245 struct regmap *regmap;
4248 dev_dbg(dev, "codec register %s\n", dev_name(dev));
4250 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
4254 /* create CODEC component name */
4255 codec->name = fmt_single_name(dev, &codec->id);
4256 if (codec->name == NULL) {
4261 if (codec_drv->write)
4262 codec->component.write = snd_soc_codec_drv_write;
4263 if (codec_drv->read)
4264 codec->component.read = snd_soc_codec_drv_read;
4265 codec->component.ignore_pmdown_time = codec_drv->ignore_pmdown_time;
4266 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
4267 codec->dapm.dev = dev;
4268 codec->dapm.codec = codec;
4269 codec->dapm.component = &codec->component;
4270 codec->dapm.seq_notifier = codec_drv->seq_notifier;
4271 codec->dapm.stream_event = codec_drv->stream_event;
4273 codec->driver = codec_drv;
4274 codec->num_dai = num_dai;
4275 codec->component.val_bytes = codec_drv->reg_word_size;
4276 mutex_init(&codec->mutex);
4278 if (!codec->component.write) {
4279 if (codec_drv->get_regmap)
4280 regmap = codec_drv->get_regmap(dev);
4282 regmap = dev_get_regmap(dev, NULL);
4285 ret = snd_soc_component_init_io(&codec->component,
4289 "Failed to set cache I/O:%d\n",
4296 for (i = 0; i < num_dai; i++) {
4297 fixup_codec_formats(&dai_drv[i].playback);
4298 fixup_codec_formats(&dai_drv[i].capture);
4301 mutex_lock(&client_mutex);
4302 list_add(&codec->list, &codec_list);
4303 mutex_unlock(&client_mutex);
4305 /* register component */
4306 ret = __snd_soc_register_component(dev, &codec->component,
4307 &codec_drv->component_driver,
4308 codec, dai_drv, num_dai, false);
4310 dev_err(codec->dev, "ASoC: Failed to regster component: %d\n", ret);
4311 goto fail_codec_name;
4314 dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n", codec->name);
4318 mutex_lock(&client_mutex);
4319 list_del(&codec->list);
4320 mutex_unlock(&client_mutex);
4327 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
4330 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4332 * @codec: codec to unregister
4334 void snd_soc_unregister_codec(struct device *dev)
4336 struct snd_soc_codec *codec;
4338 list_for_each_entry(codec, &codec_list, list) {
4339 if (dev == codec->dev)
4345 __snd_soc_unregister_component(&codec->component);
4347 mutex_lock(&client_mutex);
4348 list_del(&codec->list);
4349 mutex_unlock(&client_mutex);
4351 dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n", codec->name);
4353 snd_soc_cache_exit(codec);
4357 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
4359 /* Retrieve a card's name from device tree */
4360 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
4361 const char *propname)
4363 struct device_node *np = card->dev->of_node;
4366 ret = of_property_read_string_index(np, propname, 0, &card->name);
4368 * EINVAL means the property does not exist. This is fine providing
4369 * card->name was previously set, which is checked later in
4370 * snd_soc_register_card.
4372 if (ret < 0 && ret != -EINVAL) {
4374 "ASoC: Property '%s' could not be read: %d\n",
4381 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
4383 static const struct snd_soc_dapm_widget simple_widgets[] = {
4384 SND_SOC_DAPM_MIC("Microphone", NULL),
4385 SND_SOC_DAPM_LINE("Line", NULL),
4386 SND_SOC_DAPM_HP("Headphone", NULL),
4387 SND_SOC_DAPM_SPK("Speaker", NULL),
4390 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
4391 const char *propname)
4393 struct device_node *np = card->dev->of_node;
4394 struct snd_soc_dapm_widget *widgets;
4395 const char *template, *wname;
4396 int i, j, num_widgets, ret;
4398 num_widgets = of_property_count_strings(np, propname);
4399 if (num_widgets < 0) {
4401 "ASoC: Property '%s' does not exist\n", propname);
4404 if (num_widgets & 1) {
4406 "ASoC: Property '%s' length is not even\n", propname);
4412 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4417 widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets),
4421 "ASoC: Could not allocate memory for widgets\n");
4425 for (i = 0; i < num_widgets; i++) {
4426 ret = of_property_read_string_index(np, propname,
4430 "ASoC: Property '%s' index %d read error:%d\n",
4431 propname, 2 * i, ret);
4435 for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) {
4436 if (!strncmp(template, simple_widgets[j].name,
4437 strlen(simple_widgets[j].name))) {
4438 widgets[i] = simple_widgets[j];
4443 if (j >= ARRAY_SIZE(simple_widgets)) {
4445 "ASoC: DAPM widget '%s' is not supported\n",
4450 ret = of_property_read_string_index(np, propname,
4455 "ASoC: Property '%s' index %d read error:%d\n",
4456 propname, (2 * i) + 1, ret);
4460 widgets[i].name = wname;
4463 card->dapm_widgets = widgets;
4464 card->num_dapm_widgets = num_widgets;
4468 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets);
4470 int snd_soc_of_parse_tdm_slot(struct device_node *np,
4471 unsigned int *slots,
4472 unsigned int *slot_width)
4477 if (of_property_read_bool(np, "dai-tdm-slot-num")) {
4478 ret = of_property_read_u32(np, "dai-tdm-slot-num", &val);
4486 if (of_property_read_bool(np, "dai-tdm-slot-width")) {
4487 ret = of_property_read_u32(np, "dai-tdm-slot-width", &val);
4497 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot);
4499 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
4500 const char *propname)
4502 struct device_node *np = card->dev->of_node;
4504 struct snd_soc_dapm_route *routes;
4507 num_routes = of_property_count_strings(np, propname);
4508 if (num_routes < 0 || num_routes & 1) {
4510 "ASoC: Property '%s' does not exist or its length is not even\n",
4516 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4521 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
4525 "ASoC: Could not allocate DAPM route table\n");
4529 for (i = 0; i < num_routes; i++) {
4530 ret = of_property_read_string_index(np, propname,
4531 2 * i, &routes[i].sink);
4534 "ASoC: Property '%s' index %d could not be read: %d\n",
4535 propname, 2 * i, ret);
4538 ret = of_property_read_string_index(np, propname,
4539 (2 * i) + 1, &routes[i].source);
4542 "ASoC: Property '%s' index %d could not be read: %d\n",
4543 propname, (2 * i) + 1, ret);
4548 card->num_dapm_routes = num_routes;
4549 card->dapm_routes = routes;
4553 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
4555 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
4560 unsigned int format = 0;
4566 } of_fmt_table[] = {
4567 { "i2s", SND_SOC_DAIFMT_I2S },
4568 { "right_j", SND_SOC_DAIFMT_RIGHT_J },
4569 { "left_j", SND_SOC_DAIFMT_LEFT_J },
4570 { "dsp_a", SND_SOC_DAIFMT_DSP_A },
4571 { "dsp_b", SND_SOC_DAIFMT_DSP_B },
4572 { "ac97", SND_SOC_DAIFMT_AC97 },
4573 { "pdm", SND_SOC_DAIFMT_PDM},
4574 { "msb", SND_SOC_DAIFMT_MSB },
4575 { "lsb", SND_SOC_DAIFMT_LSB },
4582 * check "[prefix]format = xxx"
4583 * SND_SOC_DAIFMT_FORMAT_MASK area
4585 snprintf(prop, sizeof(prop), "%sformat", prefix);
4586 ret = of_property_read_string(np, prop, &str);
4588 for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
4589 if (strcmp(str, of_fmt_table[i].name) == 0) {
4590 format |= of_fmt_table[i].val;
4597 * check "[prefix]continuous-clock"
4598 * SND_SOC_DAIFMT_CLOCK_MASK area
4600 snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
4601 if (of_get_property(np, prop, NULL))
4602 format |= SND_SOC_DAIFMT_CONT;
4604 format |= SND_SOC_DAIFMT_GATED;
4607 * check "[prefix]bitclock-inversion"
4608 * check "[prefix]frame-inversion"
4609 * SND_SOC_DAIFMT_INV_MASK area
4611 snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
4612 bit = !!of_get_property(np, prop, NULL);
4614 snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
4615 frame = !!of_get_property(np, prop, NULL);
4617 switch ((bit << 4) + frame) {
4619 format |= SND_SOC_DAIFMT_IB_IF;
4622 format |= SND_SOC_DAIFMT_IB_NF;
4625 format |= SND_SOC_DAIFMT_NB_IF;
4628 /* SND_SOC_DAIFMT_NB_NF is default */
4633 * check "[prefix]bitclock-master"
4634 * check "[prefix]frame-master"
4635 * SND_SOC_DAIFMT_MASTER_MASK area
4637 snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
4638 bit = !!of_get_property(np, prop, NULL);
4640 snprintf(prop, sizeof(prop), "%sframe-master", prefix);
4641 frame = !!of_get_property(np, prop, NULL);
4643 switch ((bit << 4) + frame) {
4645 format |= SND_SOC_DAIFMT_CBM_CFM;
4648 format |= SND_SOC_DAIFMT_CBM_CFS;
4651 format |= SND_SOC_DAIFMT_CBS_CFM;
4654 format |= SND_SOC_DAIFMT_CBS_CFS;
4660 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
4662 int snd_soc_of_get_dai_name(struct device_node *of_node,
4663 const char **dai_name)
4665 struct snd_soc_component *pos;
4666 struct of_phandle_args args;
4669 ret = of_parse_phandle_with_args(of_node, "sound-dai",
4670 "#sound-dai-cells", 0, &args);
4674 ret = -EPROBE_DEFER;
4676 mutex_lock(&client_mutex);
4677 list_for_each_entry(pos, &component_list, list) {
4678 if (pos->dev->of_node != args.np)
4681 if (pos->driver->of_xlate_dai_name) {
4682 ret = pos->driver->of_xlate_dai_name(pos, &args, dai_name);
4686 switch (args.args_count) {
4688 id = 0; /* same as dai_drv[0] */
4698 if (id < 0 || id >= pos->num_dai) {
4705 *dai_name = pos->dai_drv[id].name;
4707 *dai_name = pos->name;
4712 mutex_unlock(&client_mutex);
4714 of_node_put(args.np);
4718 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
4720 static int __init snd_soc_init(void)
4722 #ifdef CONFIG_DEBUG_FS
4723 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
4724 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
4725 pr_warn("ASoC: Failed to create debugfs directory\n");
4726 snd_soc_debugfs_root = NULL;
4729 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
4731 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4733 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
4735 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4737 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
4738 &platform_list_fops))
4739 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4742 snd_soc_util_init();
4744 return platform_driver_register(&soc_driver);
4746 module_init(snd_soc_init);
4748 static void __exit snd_soc_exit(void)
4750 snd_soc_util_exit();
4752 #ifdef CONFIG_DEBUG_FS
4753 debugfs_remove_recursive(snd_soc_debugfs_root);
4755 platform_driver_unregister(&soc_driver);
4757 module_exit(snd_soc_exit);
4759 /* Module information */
4760 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4761 MODULE_DESCRIPTION("ALSA SoC Core");
4762 MODULE_LICENSE("GPL");
4763 MODULE_ALIAS("platform:soc-audio");