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 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
55 #ifdef CONFIG_DEBUG_FS
56 struct dentry *snd_soc_debugfs_root;
57 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
60 static DEFINE_MUTEX(client_mutex);
61 static LIST_HEAD(dai_list);
62 static LIST_HEAD(platform_list);
63 static LIST_HEAD(codec_list);
64 static LIST_HEAD(component_list);
67 * This is a timeout to do a DAPM powerdown after a stream is closed().
68 * It can be used to eliminate pops between different playback streams, e.g.
69 * between two audio tracks.
71 static int pmdown_time = 5000;
72 module_param(pmdown_time, int, 0);
73 MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
75 struct snd_ac97_reset_cfg {
77 struct pinctrl_state *pstate_reset;
78 struct pinctrl_state *pstate_warm_reset;
79 struct pinctrl_state *pstate_run;
85 /* returns the minimum number of bytes needed to represent
86 * a particular given value */
87 static int min_bytes_needed(unsigned long val)
92 for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
95 c = (sizeof val * 8) - c;
103 /* fill buf which is 'len' bytes with a formatted
104 * string of the form 'reg: value\n' */
105 static int format_register_str(struct snd_soc_codec *codec,
106 unsigned int reg, char *buf, size_t len)
108 int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
109 int regsize = codec->driver->reg_word_size * 2;
111 char tmpbuf[len + 1];
112 char regbuf[regsize + 1];
114 /* since tmpbuf is allocated on the stack, warn the callers if they
115 * try to abuse this function */
118 /* +2 for ': ' and + 1 for '\n' */
119 if (wordsize + regsize + 2 + 1 != len)
122 ret = snd_soc_read(codec, reg);
124 memset(regbuf, 'X', regsize);
125 regbuf[regsize] = '\0';
127 snprintf(regbuf, regsize + 1, "%.*x", regsize, ret);
130 /* prepare the buffer */
131 snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf);
132 /* copy it back to the caller without the '\0' */
133 memcpy(buf, tmpbuf, len);
138 /* codec register dump */
139 static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
140 size_t count, loff_t pos)
143 int wordsize, regsize;
148 wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
149 regsize = codec->driver->reg_word_size * 2;
151 len = wordsize + regsize + 2 + 1;
153 if (!codec->driver->reg_cache_size)
156 if (codec->driver->reg_cache_step)
157 step = codec->driver->reg_cache_step;
159 for (i = 0; i < codec->driver->reg_cache_size; i += step) {
160 if (!snd_soc_codec_readable_register(codec, i))
162 if (codec->driver->display_register) {
163 count += codec->driver->display_register(codec, buf + count,
164 PAGE_SIZE - count, i);
166 /* only support larger than PAGE_SIZE bytes debugfs
167 * entries for the default case */
169 if (total + len >= count - 1)
171 format_register_str(codec, i, buf + total, len);
178 total = min(total, count - 1);
183 static ssize_t codec_reg_show(struct device *dev,
184 struct device_attribute *attr, char *buf)
186 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
188 return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
191 static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
193 static ssize_t pmdown_time_show(struct device *dev,
194 struct device_attribute *attr, char *buf)
196 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
198 return sprintf(buf, "%ld\n", rtd->pmdown_time);
201 static ssize_t pmdown_time_set(struct device *dev,
202 struct device_attribute *attr,
203 const char *buf, size_t count)
205 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
208 ret = strict_strtol(buf, 10, &rtd->pmdown_time);
215 static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
217 #ifdef CONFIG_DEBUG_FS
218 static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
219 size_t count, loff_t *ppos)
222 struct snd_soc_codec *codec = file->private_data;
225 if (*ppos < 0 || !count)
228 buf = kmalloc(count, GFP_KERNEL);
232 ret = soc_codec_reg_show(codec, buf, count, *ppos);
234 if (copy_to_user(user_buf, buf, ret)) {
245 static ssize_t codec_reg_write_file(struct file *file,
246 const char __user *user_buf, size_t count, loff_t *ppos)
251 unsigned long reg, value;
252 struct snd_soc_codec *codec = file->private_data;
254 buf_size = min(count, (sizeof(buf)-1));
255 if (copy_from_user(buf, user_buf, buf_size))
259 while (*start == ' ')
261 reg = simple_strtoul(start, &start, 16);
262 while (*start == ' ')
264 if (strict_strtoul(start, 16, &value))
267 /* Userspace has been fiddling around behind the kernel's back */
268 add_taint(TAINT_USER, LOCKDEP_NOW_UNRELIABLE);
270 snd_soc_write(codec, reg, value);
274 static const struct file_operations codec_reg_fops = {
276 .read = codec_reg_read_file,
277 .write = codec_reg_write_file,
278 .llseek = default_llseek,
281 static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
283 struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
285 codec->debugfs_codec_root = debugfs_create_dir(codec->name,
287 if (!codec->debugfs_codec_root) {
289 "ASoC: Failed to create codec debugfs directory\n");
293 debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
295 debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
298 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
299 codec->debugfs_codec_root,
300 codec, &codec_reg_fops);
301 if (!codec->debugfs_reg)
303 "ASoC: Failed to create codec register debugfs file\n");
305 snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root);
308 static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
310 debugfs_remove_recursive(codec->debugfs_codec_root);
313 static void soc_init_platform_debugfs(struct snd_soc_platform *platform)
315 struct dentry *debugfs_card_root = platform->card->debugfs_card_root;
317 platform->debugfs_platform_root = debugfs_create_dir(platform->name,
319 if (!platform->debugfs_platform_root) {
320 dev_warn(platform->dev,
321 "ASoC: Failed to create platform debugfs directory\n");
325 snd_soc_dapm_debugfs_init(&platform->dapm,
326 platform->debugfs_platform_root);
329 static void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
331 debugfs_remove_recursive(platform->debugfs_platform_root);
334 static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
335 size_t count, loff_t *ppos)
337 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
338 ssize_t len, ret = 0;
339 struct snd_soc_codec *codec;
344 list_for_each_entry(codec, &codec_list, list) {
345 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
349 if (ret > PAGE_SIZE) {
356 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
363 static const struct file_operations codec_list_fops = {
364 .read = codec_list_read_file,
365 .llseek = default_llseek,/* read accesses f_pos */
368 static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
369 size_t count, loff_t *ppos)
371 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
372 ssize_t len, ret = 0;
373 struct snd_soc_dai *dai;
378 list_for_each_entry(dai, &dai_list, list) {
379 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", dai->name);
382 if (ret > PAGE_SIZE) {
388 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
395 static const struct file_operations dai_list_fops = {
396 .read = dai_list_read_file,
397 .llseek = default_llseek,/* read accesses f_pos */
400 static ssize_t platform_list_read_file(struct file *file,
401 char __user *user_buf,
402 size_t count, loff_t *ppos)
404 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
405 ssize_t len, ret = 0;
406 struct snd_soc_platform *platform;
411 list_for_each_entry(platform, &platform_list, list) {
412 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
416 if (ret > PAGE_SIZE) {
422 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
429 static const struct file_operations platform_list_fops = {
430 .read = platform_list_read_file,
431 .llseek = default_llseek,/* read accesses f_pos */
434 static void soc_init_card_debugfs(struct snd_soc_card *card)
436 card->debugfs_card_root = debugfs_create_dir(card->name,
437 snd_soc_debugfs_root);
438 if (!card->debugfs_card_root) {
440 "ASoC: Failed to create card debugfs directory\n");
444 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
445 card->debugfs_card_root,
447 if (!card->debugfs_pop_time)
449 "ASoC: Failed to create pop time debugfs file\n");
452 static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
454 debugfs_remove_recursive(card->debugfs_card_root);
459 static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
463 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
467 static inline void soc_init_platform_debugfs(struct snd_soc_platform *platform)
471 static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
475 static inline void soc_init_card_debugfs(struct snd_soc_card *card)
479 static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
484 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
485 const char *dai_link, int stream)
489 for (i = 0; i < card->num_links; i++) {
490 if (card->rtd[i].dai_link->no_pcm &&
491 !strcmp(card->rtd[i].dai_link->name, dai_link))
492 return card->rtd[i].pcm->streams[stream].substream;
494 dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link);
497 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);
499 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
500 const char *dai_link)
504 for (i = 0; i < card->num_links; i++) {
505 if (!strcmp(card->rtd[i].dai_link->name, dai_link))
506 return &card->rtd[i];
508 dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link);
511 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
513 #ifdef CONFIG_SND_SOC_AC97_BUS
514 /* unregister ac97 codec */
515 static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
517 if (codec->ac97->dev.bus)
518 device_unregister(&codec->ac97->dev);
522 /* stop no dev release warning */
523 static void soc_ac97_device_release(struct device *dev){}
525 /* register ac97 codec to bus */
526 static int soc_ac97_dev_register(struct snd_soc_codec *codec)
530 codec->ac97->dev.bus = &ac97_bus_type;
531 codec->ac97->dev.parent = codec->card->dev;
532 codec->ac97->dev.release = soc_ac97_device_release;
534 dev_set_name(&codec->ac97->dev, "%d-%d:%s",
535 codec->card->snd_card->number, 0, codec->name);
536 err = device_register(&codec->ac97->dev);
538 dev_err(codec->dev, "ASoC: Can't register ac97 bus\n");
539 codec->ac97->dev.bus = NULL;
546 #ifdef CONFIG_PM_SLEEP
547 /* powers down audio subsystem for suspend */
548 int snd_soc_suspend(struct device *dev)
550 struct snd_soc_card *card = dev_get_drvdata(dev);
551 struct snd_soc_codec *codec;
554 /* If the initialization of this soc device failed, there is no codec
555 * associated with it. Just bail out in this case.
557 if (list_empty(&card->codec_dev_list))
560 /* Due to the resume being scheduled into a workqueue we could
561 * suspend before that's finished - wait for it to complete.
563 snd_power_lock(card->snd_card);
564 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
565 snd_power_unlock(card->snd_card);
567 /* we're going to block userspace touching us until resume completes */
568 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
570 /* mute any active DACs */
571 for (i = 0; i < card->num_rtd; i++) {
572 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
573 struct snd_soc_dai_driver *drv = dai->driver;
575 if (card->rtd[i].dai_link->ignore_suspend)
578 if (drv->ops->digital_mute && dai->playback_active)
579 drv->ops->digital_mute(dai, 1);
582 /* suspend all pcms */
583 for (i = 0; i < card->num_rtd; i++) {
584 if (card->rtd[i].dai_link->ignore_suspend)
587 snd_pcm_suspend_all(card->rtd[i].pcm);
590 if (card->suspend_pre)
591 card->suspend_pre(card);
593 for (i = 0; i < card->num_rtd; i++) {
594 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
595 struct snd_soc_platform *platform = card->rtd[i].platform;
597 if (card->rtd[i].dai_link->ignore_suspend)
600 if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
601 cpu_dai->driver->suspend(cpu_dai);
602 if (platform->driver->suspend && !platform->suspended) {
603 platform->driver->suspend(cpu_dai);
604 platform->suspended = 1;
608 /* close any waiting streams and save state */
609 for (i = 0; i < card->num_rtd; i++) {
610 flush_delayed_work(&card->rtd[i].delayed_work);
611 card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
614 for (i = 0; i < card->num_rtd; i++) {
616 if (card->rtd[i].dai_link->ignore_suspend)
619 snd_soc_dapm_stream_event(&card->rtd[i],
620 SNDRV_PCM_STREAM_PLAYBACK,
621 SND_SOC_DAPM_STREAM_SUSPEND);
623 snd_soc_dapm_stream_event(&card->rtd[i],
624 SNDRV_PCM_STREAM_CAPTURE,
625 SND_SOC_DAPM_STREAM_SUSPEND);
628 /* Recheck all analogue paths too */
629 dapm_mark_io_dirty(&card->dapm);
630 snd_soc_dapm_sync(&card->dapm);
632 /* suspend all CODECs */
633 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
634 /* If there are paths active then the CODEC will be held with
635 * bias _ON and should not be suspended. */
636 if (!codec->suspended && codec->driver->suspend) {
637 switch (codec->dapm.bias_level) {
638 case SND_SOC_BIAS_STANDBY:
640 * If the CODEC is capable of idle
641 * bias off then being in STANDBY
642 * means it's doing something,
643 * otherwise fall through.
645 if (codec->dapm.idle_bias_off) {
647 "ASoC: idle_bias_off CODEC on over suspend\n");
650 case SND_SOC_BIAS_OFF:
651 codec->driver->suspend(codec);
652 codec->suspended = 1;
653 codec->cache_sync = 1;
654 if (codec->using_regmap)
655 regcache_mark_dirty(codec->control_data);
659 "ASoC: CODEC is on over suspend\n");
665 for (i = 0; i < card->num_rtd; i++) {
666 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
668 if (card->rtd[i].dai_link->ignore_suspend)
671 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
672 cpu_dai->driver->suspend(cpu_dai);
675 if (card->suspend_post)
676 card->suspend_post(card);
680 EXPORT_SYMBOL_GPL(snd_soc_suspend);
682 /* deferred resume work, so resume can complete before we finished
683 * setting our codec back up, which can be very slow on I2C
685 static void soc_resume_deferred(struct work_struct *work)
687 struct snd_soc_card *card =
688 container_of(work, struct snd_soc_card, deferred_resume_work);
689 struct snd_soc_codec *codec;
692 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
693 * so userspace apps are blocked from touching us
696 dev_dbg(card->dev, "ASoC: starting resume work\n");
698 /* Bring us up into D2 so that DAPM starts enabling things */
699 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
701 if (card->resume_pre)
702 card->resume_pre(card);
704 /* resume AC97 DAIs */
705 for (i = 0; i < card->num_rtd; i++) {
706 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
708 if (card->rtd[i].dai_link->ignore_suspend)
711 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
712 cpu_dai->driver->resume(cpu_dai);
715 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
716 /* If the CODEC was idle over suspend then it will have been
717 * left with bias OFF or STANDBY and suspended so we must now
718 * resume. Otherwise the suspend was suppressed.
720 if (codec->driver->resume && codec->suspended) {
721 switch (codec->dapm.bias_level) {
722 case SND_SOC_BIAS_STANDBY:
723 case SND_SOC_BIAS_OFF:
724 codec->driver->resume(codec);
725 codec->suspended = 0;
729 "ASoC: CODEC was on over suspend\n");
735 for (i = 0; i < card->num_rtd; i++) {
737 if (card->rtd[i].dai_link->ignore_suspend)
740 snd_soc_dapm_stream_event(&card->rtd[i],
741 SNDRV_PCM_STREAM_PLAYBACK,
742 SND_SOC_DAPM_STREAM_RESUME);
744 snd_soc_dapm_stream_event(&card->rtd[i],
745 SNDRV_PCM_STREAM_CAPTURE,
746 SND_SOC_DAPM_STREAM_RESUME);
749 /* unmute any active DACs */
750 for (i = 0; i < card->num_rtd; i++) {
751 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
752 struct snd_soc_dai_driver *drv = dai->driver;
754 if (card->rtd[i].dai_link->ignore_suspend)
757 if (drv->ops->digital_mute && dai->playback_active)
758 drv->ops->digital_mute(dai, 0);
761 for (i = 0; i < card->num_rtd; i++) {
762 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
763 struct snd_soc_platform *platform = card->rtd[i].platform;
765 if (card->rtd[i].dai_link->ignore_suspend)
768 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
769 cpu_dai->driver->resume(cpu_dai);
770 if (platform->driver->resume && platform->suspended) {
771 platform->driver->resume(cpu_dai);
772 platform->suspended = 0;
776 if (card->resume_post)
777 card->resume_post(card);
779 dev_dbg(card->dev, "ASoC: resume work completed\n");
781 /* userspace can access us now we are back as we were before */
782 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
784 /* Recheck all analogue paths too */
785 dapm_mark_io_dirty(&card->dapm);
786 snd_soc_dapm_sync(&card->dapm);
789 /* powers up audio subsystem after a suspend */
790 int snd_soc_resume(struct device *dev)
792 struct snd_soc_card *card = dev_get_drvdata(dev);
793 int i, ac97_control = 0;
795 /* If the initialization of this soc device failed, there is no codec
796 * associated with it. Just bail out in this case.
798 if (list_empty(&card->codec_dev_list))
801 /* AC97 devices might have other drivers hanging off them so
802 * need to resume immediately. Other drivers don't have that
803 * problem and may take a substantial amount of time to resume
804 * due to I/O costs and anti-pop so handle them out of line.
806 for (i = 0; i < card->num_rtd; i++) {
807 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
808 ac97_control |= cpu_dai->driver->ac97_control;
811 dev_dbg(dev, "ASoC: Resuming AC97 immediately\n");
812 soc_resume_deferred(&card->deferred_resume_work);
814 dev_dbg(dev, "ASoC: Scheduling resume work\n");
815 if (!schedule_work(&card->deferred_resume_work))
816 dev_err(dev, "ASoC: resume work item may be lost\n");
821 EXPORT_SYMBOL_GPL(snd_soc_resume);
823 #define snd_soc_suspend NULL
824 #define snd_soc_resume NULL
827 static const struct snd_soc_dai_ops null_dai_ops = {
830 static int soc_bind_dai_link(struct snd_soc_card *card, int num)
832 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
833 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
834 struct snd_soc_codec *codec;
835 struct snd_soc_platform *platform;
836 struct snd_soc_dai *codec_dai, *cpu_dai;
837 const char *platform_name;
839 dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num);
841 /* Find CPU DAI from registered DAIs*/
842 list_for_each_entry(cpu_dai, &dai_list, list) {
843 if (dai_link->cpu_of_node &&
844 (cpu_dai->dev->of_node != dai_link->cpu_of_node))
846 if (dai_link->cpu_name &&
847 strcmp(dev_name(cpu_dai->dev), dai_link->cpu_name))
849 if (dai_link->cpu_dai_name &&
850 strcmp(cpu_dai->name, dai_link->cpu_dai_name))
853 rtd->cpu_dai = cpu_dai;
857 dev_err(card->dev, "ASoC: CPU DAI %s not registered\n",
858 dai_link->cpu_dai_name);
859 return -EPROBE_DEFER;
862 /* Find CODEC from registered CODECs */
863 list_for_each_entry(codec, &codec_list, list) {
864 if (dai_link->codec_of_node) {
865 if (codec->dev->of_node != dai_link->codec_of_node)
868 if (strcmp(codec->name, dai_link->codec_name))
875 * CODEC found, so find CODEC DAI from registered DAIs from
878 list_for_each_entry(codec_dai, &dai_list, list) {
879 if (codec->dev == codec_dai->dev &&
880 !strcmp(codec_dai->name,
881 dai_link->codec_dai_name)) {
883 rtd->codec_dai = codec_dai;
887 if (!rtd->codec_dai) {
888 dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
889 dai_link->codec_dai_name);
890 return -EPROBE_DEFER;
895 dev_err(card->dev, "ASoC: CODEC %s not registered\n",
896 dai_link->codec_name);
897 return -EPROBE_DEFER;
900 /* if there's no platform we match on the empty platform */
901 platform_name = dai_link->platform_name;
902 if (!platform_name && !dai_link->platform_of_node)
903 platform_name = "snd-soc-dummy";
905 /* find one from the set of registered platforms */
906 list_for_each_entry(platform, &platform_list, list) {
907 if (dai_link->platform_of_node) {
908 if (platform->dev->of_node !=
909 dai_link->platform_of_node)
912 if (strcmp(platform->name, platform_name))
916 rtd->platform = platform;
918 if (!rtd->platform) {
919 dev_err(card->dev, "ASoC: platform %s not registered\n",
920 dai_link->platform_name);
921 return -EPROBE_DEFER;
929 static int soc_remove_platform(struct snd_soc_platform *platform)
933 if (platform->driver->remove) {
934 ret = platform->driver->remove(platform);
936 dev_err(platform->dev, "ASoC: failed to remove %d\n",
940 /* Make sure all DAPM widgets are freed */
941 snd_soc_dapm_free(&platform->dapm);
943 soc_cleanup_platform_debugfs(platform);
944 platform->probed = 0;
945 list_del(&platform->card_list);
946 module_put(platform->dev->driver->owner);
951 static void soc_remove_codec(struct snd_soc_codec *codec)
955 if (codec->driver->remove) {
956 err = codec->driver->remove(codec);
958 dev_err(codec->dev, "ASoC: failed to remove %d\n", err);
961 /* Make sure all DAPM widgets are freed */
962 snd_soc_dapm_free(&codec->dapm);
964 soc_cleanup_codec_debugfs(codec);
966 list_del(&codec->card_list);
967 module_put(codec->dev->driver->owner);
970 static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order)
972 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
973 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
976 /* unregister the rtd device */
977 if (rtd->dev_registered) {
978 device_remove_file(rtd->dev, &dev_attr_pmdown_time);
979 device_remove_file(rtd->dev, &dev_attr_codec_reg);
980 device_unregister(rtd->dev);
981 rtd->dev_registered = 0;
984 /* remove the CODEC DAI */
985 if (codec_dai && codec_dai->probed &&
986 codec_dai->driver->remove_order == order) {
987 if (codec_dai->driver->remove) {
988 err = codec_dai->driver->remove(codec_dai);
990 dev_err(codec_dai->dev,
991 "ASoC: failed to remove %s: %d\n",
992 codec_dai->name, err);
994 codec_dai->probed = 0;
995 list_del(&codec_dai->card_list);
998 /* remove the cpu_dai */
999 if (cpu_dai && cpu_dai->probed &&
1000 cpu_dai->driver->remove_order == order) {
1001 if (cpu_dai->driver->remove) {
1002 err = cpu_dai->driver->remove(cpu_dai);
1004 dev_err(cpu_dai->dev,
1005 "ASoC: failed to remove %s: %d\n",
1006 cpu_dai->name, err);
1008 cpu_dai->probed = 0;
1009 list_del(&cpu_dai->card_list);
1011 if (!cpu_dai->codec) {
1012 snd_soc_dapm_free(&cpu_dai->dapm);
1013 module_put(cpu_dai->dev->driver->owner);
1018 static void soc_remove_link_components(struct snd_soc_card *card, int num,
1021 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1022 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1023 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1024 struct snd_soc_platform *platform = rtd->platform;
1025 struct snd_soc_codec *codec;
1027 /* remove the platform */
1028 if (platform && platform->probed &&
1029 platform->driver->remove_order == order) {
1030 soc_remove_platform(platform);
1033 /* remove the CODEC-side CODEC */
1035 codec = codec_dai->codec;
1036 if (codec && codec->probed &&
1037 codec->driver->remove_order == order)
1038 soc_remove_codec(codec);
1041 /* remove any CPU-side CODEC */
1043 codec = cpu_dai->codec;
1044 if (codec && codec->probed &&
1045 codec->driver->remove_order == order)
1046 soc_remove_codec(codec);
1050 static void soc_remove_dai_links(struct snd_soc_card *card)
1054 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1056 for (dai = 0; dai < card->num_rtd; dai++)
1057 soc_remove_link_dais(card, dai, order);
1060 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1062 for (dai = 0; dai < card->num_rtd; dai++)
1063 soc_remove_link_components(card, dai, order);
1069 static void soc_set_name_prefix(struct snd_soc_card *card,
1070 struct snd_soc_codec *codec)
1074 if (card->codec_conf == NULL)
1077 for (i = 0; i < card->num_configs; i++) {
1078 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1079 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
1080 codec->name_prefix = map->name_prefix;
1086 static int soc_probe_codec(struct snd_soc_card *card,
1087 struct snd_soc_codec *codec)
1090 const struct snd_soc_codec_driver *driver = codec->driver;
1091 struct snd_soc_dai *dai;
1094 codec->dapm.card = card;
1095 soc_set_name_prefix(card, codec);
1097 if (!try_module_get(codec->dev->driver->owner))
1100 soc_init_codec_debugfs(codec);
1102 if (driver->dapm_widgets)
1103 snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
1104 driver->num_dapm_widgets);
1106 /* Create DAPM widgets for each DAI stream */
1107 list_for_each_entry(dai, &dai_list, list) {
1108 if (dai->dev != codec->dev)
1111 snd_soc_dapm_new_dai_widgets(&codec->dapm, dai);
1114 codec->dapm.idle_bias_off = driver->idle_bias_off;
1116 if (driver->probe) {
1117 ret = driver->probe(codec);
1120 "ASoC: failed to probe CODEC %d\n", ret);
1123 WARN(codec->dapm.idle_bias_off &&
1124 codec->dapm.bias_level != SND_SOC_BIAS_OFF,
1125 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1129 /* If the driver didn't set I/O up try regmap */
1130 if (!codec->write && dev_get_regmap(codec->dev, NULL))
1131 snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP);
1133 if (driver->controls)
1134 snd_soc_add_codec_controls(codec, driver->controls,
1135 driver->num_controls);
1136 if (driver->dapm_routes)
1137 snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
1138 driver->num_dapm_routes);
1140 /* mark codec as probed and add to card codec list */
1142 list_add(&codec->card_list, &card->codec_dev_list);
1143 list_add(&codec->dapm.list, &card->dapm_list);
1148 soc_cleanup_codec_debugfs(codec);
1149 module_put(codec->dev->driver->owner);
1154 static int soc_probe_platform(struct snd_soc_card *card,
1155 struct snd_soc_platform *platform)
1158 const struct snd_soc_platform_driver *driver = platform->driver;
1159 struct snd_soc_dai *dai;
1161 platform->card = card;
1162 platform->dapm.card = card;
1164 if (!try_module_get(platform->dev->driver->owner))
1167 soc_init_platform_debugfs(platform);
1169 if (driver->dapm_widgets)
1170 snd_soc_dapm_new_controls(&platform->dapm,
1171 driver->dapm_widgets, driver->num_dapm_widgets);
1173 /* Create DAPM widgets for each DAI stream */
1174 list_for_each_entry(dai, &dai_list, list) {
1175 if (dai->dev != platform->dev)
1178 snd_soc_dapm_new_dai_widgets(&platform->dapm, dai);
1181 platform->dapm.idle_bias_off = 1;
1183 if (driver->probe) {
1184 ret = driver->probe(platform);
1186 dev_err(platform->dev,
1187 "ASoC: failed to probe platform %d\n", ret);
1192 if (driver->controls)
1193 snd_soc_add_platform_controls(platform, driver->controls,
1194 driver->num_controls);
1195 if (driver->dapm_routes)
1196 snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
1197 driver->num_dapm_routes);
1199 /* mark platform as probed and add to card platform list */
1200 platform->probed = 1;
1201 list_add(&platform->card_list, &card->platform_dev_list);
1202 list_add(&platform->dapm.list, &card->dapm_list);
1207 soc_cleanup_platform_debugfs(platform);
1208 module_put(platform->dev->driver->owner);
1213 static void rtd_release(struct device *dev)
1218 static int soc_post_component_init(struct snd_soc_card *card,
1219 struct snd_soc_codec *codec,
1220 int num, int dailess)
1222 struct snd_soc_dai_link *dai_link = NULL;
1223 struct snd_soc_aux_dev *aux_dev = NULL;
1224 struct snd_soc_pcm_runtime *rtd;
1225 const char *temp, *name;
1229 dai_link = &card->dai_link[num];
1230 rtd = &card->rtd[num];
1231 name = dai_link->name;
1233 aux_dev = &card->aux_dev[num];
1234 rtd = &card->rtd_aux[num];
1235 name = aux_dev->name;
1239 /* Make sure all DAPM widgets are instantiated */
1240 snd_soc_dapm_new_widgets(&codec->dapm);
1242 /* machine controls, routes and widgets are not prefixed */
1243 temp = codec->name_prefix;
1244 codec->name_prefix = NULL;
1246 /* do machine specific initialization */
1247 if (!dailess && dai_link->init)
1248 ret = dai_link->init(rtd);
1249 else if (dailess && aux_dev->init)
1250 ret = aux_dev->init(&codec->dapm);
1252 dev_err(card->dev, "ASoC: failed to init %s: %d\n", name, ret);
1255 codec->name_prefix = temp;
1257 /* register the rtd device */
1260 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1263 device_initialize(rtd->dev);
1264 rtd->dev->parent = card->dev;
1265 rtd->dev->release = rtd_release;
1266 rtd->dev->init_name = name;
1267 dev_set_drvdata(rtd->dev, rtd);
1268 mutex_init(&rtd->pcm_mutex);
1269 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1270 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1271 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1272 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1273 ret = device_add(rtd->dev);
1275 /* calling put_device() here to free the rtd->dev */
1276 put_device(rtd->dev);
1278 "ASoC: failed to register runtime device: %d\n", ret);
1281 rtd->dev_registered = 1;
1283 /* add DAPM sysfs entries for this codec */
1284 ret = snd_soc_dapm_sys_add(rtd->dev);
1287 "ASoC: failed to add codec dapm sysfs entries: %d\n", ret);
1289 /* add codec sysfs entries */
1290 ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
1293 "ASoC: failed to add codec sysfs files: %d\n", ret);
1295 #ifdef CONFIG_DEBUG_FS
1296 /* add DPCM sysfs entries */
1297 if (!dailess && !dai_link->dynamic)
1300 ret = soc_dpcm_debugfs_add(rtd);
1302 dev_err(rtd->dev, "ASoC: failed to add dpcm sysfs entries: %d\n", ret);
1309 static int soc_probe_link_components(struct snd_soc_card *card, int num,
1312 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1313 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1314 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1315 struct snd_soc_platform *platform = rtd->platform;
1318 /* probe the CPU-side component, if it is a CODEC */
1319 if (cpu_dai->codec &&
1320 !cpu_dai->codec->probed &&
1321 cpu_dai->codec->driver->probe_order == order) {
1322 ret = soc_probe_codec(card, cpu_dai->codec);
1327 /* probe the CODEC-side component */
1328 if (!codec_dai->codec->probed &&
1329 codec_dai->codec->driver->probe_order == order) {
1330 ret = soc_probe_codec(card, codec_dai->codec);
1335 /* probe the platform */
1336 if (!platform->probed &&
1337 platform->driver->probe_order == order) {
1338 ret = soc_probe_platform(card, platform);
1346 static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
1348 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1349 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1350 struct snd_soc_codec *codec = rtd->codec;
1351 struct snd_soc_platform *platform = rtd->platform;
1352 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1353 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1354 struct snd_soc_dapm_widget *play_w, *capture_w;
1357 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1358 card->name, num, order);
1360 /* config components */
1361 cpu_dai->platform = platform;
1362 codec_dai->card = card;
1363 cpu_dai->card = card;
1365 /* set default power off timeout */
1366 rtd->pmdown_time = pmdown_time;
1368 /* probe the cpu_dai */
1369 if (!cpu_dai->probed &&
1370 cpu_dai->driver->probe_order == order) {
1371 if (!cpu_dai->codec) {
1372 cpu_dai->dapm.card = card;
1373 if (!try_module_get(cpu_dai->dev->driver->owner))
1376 list_add(&cpu_dai->dapm.list, &card->dapm_list);
1377 snd_soc_dapm_new_dai_widgets(&cpu_dai->dapm, cpu_dai);
1380 if (cpu_dai->driver->probe) {
1381 ret = cpu_dai->driver->probe(cpu_dai);
1383 dev_err(cpu_dai->dev,
1384 "ASoC: failed to probe CPU DAI %s: %d\n",
1385 cpu_dai->name, ret);
1386 module_put(cpu_dai->dev->driver->owner);
1390 cpu_dai->probed = 1;
1391 /* mark cpu_dai as probed and add to card dai list */
1392 list_add(&cpu_dai->card_list, &card->dai_dev_list);
1395 /* probe the CODEC DAI */
1396 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
1397 if (codec_dai->driver->probe) {
1398 ret = codec_dai->driver->probe(codec_dai);
1400 dev_err(codec_dai->dev,
1401 "ASoC: failed to probe CODEC DAI %s: %d\n",
1402 codec_dai->name, ret);
1407 /* mark codec_dai as probed and add to card dai list */
1408 codec_dai->probed = 1;
1409 list_add(&codec_dai->card_list, &card->dai_dev_list);
1412 /* complete DAI probe during last probe */
1413 if (order != SND_SOC_COMP_ORDER_LAST)
1416 ret = soc_post_component_init(card, codec, num, 0);
1420 ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
1422 dev_warn(rtd->dev, "ASoC: failed to add pmdown_time sysfs: %d\n",
1425 if (cpu_dai->driver->compress_dai) {
1426 /*create compress_device"*/
1427 ret = soc_new_compress(rtd, num);
1429 dev_err(card->dev, "ASoC: can't create compress %s\n",
1430 dai_link->stream_name);
1435 if (!dai_link->params) {
1436 /* create the pcm */
1437 ret = soc_new_pcm(rtd, num);
1439 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1440 dai_link->stream_name, ret);
1444 /* link the DAI widgets */
1445 play_w = codec_dai->playback_widget;
1446 capture_w = cpu_dai->capture_widget;
1447 if (play_w && capture_w) {
1448 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1451 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1452 play_w->name, capture_w->name, ret);
1457 play_w = cpu_dai->playback_widget;
1458 capture_w = codec_dai->capture_widget;
1459 if (play_w && capture_w) {
1460 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1463 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1464 play_w->name, capture_w->name, ret);
1471 /* add platform data for AC97 devices */
1472 if (rtd->codec_dai->driver->ac97_control)
1473 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1478 #ifdef CONFIG_SND_SOC_AC97_BUS
1479 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1483 /* Only instantiate AC97 if not already done by the adaptor
1484 * for the generic AC97 subsystem.
1486 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
1488 * It is possible that the AC97 device is already registered to
1489 * the device subsystem. This happens when the device is created
1490 * via snd_ac97_mixer(). Currently only SoC codec that does so
1491 * is the generic AC97 glue but others migh emerge.
1493 * In those cases we don't try to register the device again.
1495 if (!rtd->codec->ac97_created)
1498 ret = soc_ac97_dev_register(rtd->codec);
1500 dev_err(rtd->codec->dev,
1501 "ASoC: AC97 device register failed: %d\n", ret);
1505 rtd->codec->ac97_registered = 1;
1510 static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1512 if (codec->ac97_registered) {
1513 soc_ac97_dev_unregister(codec);
1514 codec->ac97_registered = 0;
1519 static int soc_check_aux_dev(struct snd_soc_card *card, int num)
1521 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1522 struct snd_soc_codec *codec;
1524 /* find CODEC from registered CODECs*/
1525 list_for_each_entry(codec, &codec_list, list) {
1526 if (!strcmp(codec->name, aux_dev->codec_name))
1530 dev_err(card->dev, "ASoC: %s not registered\n", aux_dev->codec_name);
1532 return -EPROBE_DEFER;
1535 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1537 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1538 struct snd_soc_codec *codec;
1541 /* find CODEC from registered CODECs*/
1542 list_for_each_entry(codec, &codec_list, list) {
1543 if (!strcmp(codec->name, aux_dev->codec_name)) {
1544 if (codec->probed) {
1546 "ASoC: codec already probed");
1553 /* codec not found */
1554 dev_err(card->dev, "ASoC: codec %s not found", aux_dev->codec_name);
1555 return -EPROBE_DEFER;
1558 ret = soc_probe_codec(card, codec);
1562 ret = soc_post_component_init(card, codec, num, 1);
1568 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1570 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1571 struct snd_soc_codec *codec = rtd->codec;
1573 /* unregister the rtd device */
1574 if (rtd->dev_registered) {
1575 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1576 device_unregister(rtd->dev);
1577 rtd->dev_registered = 0;
1580 if (codec && codec->probed)
1581 soc_remove_codec(codec);
1584 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
1585 enum snd_soc_compress_type compress_type)
1589 if (codec->cache_init)
1592 /* override the compress_type if necessary */
1593 if (compress_type && codec->compress_type != compress_type)
1594 codec->compress_type = compress_type;
1595 ret = snd_soc_cache_init(codec);
1598 "ASoC: Failed to set cache compression type: %d\n",
1602 codec->cache_init = 1;
1606 static int snd_soc_instantiate_card(struct snd_soc_card *card)
1608 struct snd_soc_codec *codec;
1609 struct snd_soc_codec_conf *codec_conf;
1610 enum snd_soc_compress_type compress_type;
1611 struct snd_soc_dai_link *dai_link;
1612 int ret, i, order, dai_fmt;
1614 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1617 for (i = 0; i < card->num_links; i++) {
1618 ret = soc_bind_dai_link(card, i);
1623 /* check aux_devs too */
1624 for (i = 0; i < card->num_aux_devs; i++) {
1625 ret = soc_check_aux_dev(card, i);
1630 /* initialize the register cache for each available codec */
1631 list_for_each_entry(codec, &codec_list, list) {
1632 if (codec->cache_init)
1634 /* by default we don't override the compress_type */
1636 /* check to see if we need to override the compress_type */
1637 for (i = 0; i < card->num_configs; ++i) {
1638 codec_conf = &card->codec_conf[i];
1639 if (!strcmp(codec->name, codec_conf->dev_name)) {
1640 compress_type = codec_conf->compress_type;
1641 if (compress_type && compress_type
1642 != codec->compress_type)
1646 ret = snd_soc_init_codec_cache(codec, compress_type);
1651 /* card bind complete so register a sound card */
1652 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1653 card->owner, 0, &card->snd_card);
1656 "ASoC: can't create sound card for card %s: %d\n",
1660 card->snd_card->dev = card->dev;
1662 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1663 card->dapm.dev = card->dev;
1664 card->dapm.card = card;
1665 list_add(&card->dapm.list, &card->dapm_list);
1667 #ifdef CONFIG_DEBUG_FS
1668 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1671 #ifdef CONFIG_PM_SLEEP
1672 /* deferred resume work */
1673 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1676 if (card->dapm_widgets)
1677 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1678 card->num_dapm_widgets);
1680 /* initialise the sound card only once */
1682 ret = card->probe(card);
1684 goto card_probe_error;
1687 /* probe all components used by DAI links on this card */
1688 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1690 for (i = 0; i < card->num_links; i++) {
1691 ret = soc_probe_link_components(card, i, order);
1694 "ASoC: failed to instantiate card %d\n",
1701 /* probe all DAI links on this card */
1702 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1704 for (i = 0; i < card->num_links; i++) {
1705 ret = soc_probe_link_dais(card, i, order);
1708 "ASoC: failed to instantiate card %d\n",
1715 for (i = 0; i < card->num_aux_devs; i++) {
1716 ret = soc_probe_aux_dev(card, i);
1719 "ASoC: failed to add auxiliary devices %d\n",
1721 goto probe_aux_dev_err;
1725 snd_soc_dapm_link_dai_widgets(card);
1728 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1730 if (card->dapm_routes)
1731 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1732 card->num_dapm_routes);
1734 snd_soc_dapm_new_widgets(&card->dapm);
1736 for (i = 0; i < card->num_links; i++) {
1737 dai_link = &card->dai_link[i];
1738 dai_fmt = dai_link->dai_fmt;
1741 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1743 if (ret != 0 && ret != -ENOTSUPP)
1744 dev_warn(card->rtd[i].codec_dai->dev,
1745 "ASoC: Failed to set DAI format: %d\n",
1749 /* If this is a regular CPU link there will be a platform */
1751 (dai_link->platform_name || dai_link->platform_of_node)) {
1752 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1754 if (ret != 0 && ret != -ENOTSUPP)
1755 dev_warn(card->rtd[i].cpu_dai->dev,
1756 "ASoC: Failed to set DAI format: %d\n",
1758 } else if (dai_fmt) {
1759 /* Flip the polarity for the "CPU" end */
1760 dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
1761 switch (dai_link->dai_fmt &
1762 SND_SOC_DAIFMT_MASTER_MASK) {
1763 case SND_SOC_DAIFMT_CBM_CFM:
1764 dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1766 case SND_SOC_DAIFMT_CBM_CFS:
1767 dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1769 case SND_SOC_DAIFMT_CBS_CFM:
1770 dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1772 case SND_SOC_DAIFMT_CBS_CFS:
1773 dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1777 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1779 if (ret != 0 && ret != -ENOTSUPP)
1780 dev_warn(card->rtd[i].cpu_dai->dev,
1781 "ASoC: Failed to set DAI format: %d\n",
1786 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1788 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1789 "%s", card->long_name ? card->long_name : card->name);
1790 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1791 "%s", card->driver_name ? card->driver_name : card->name);
1792 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1793 switch (card->snd_card->driver[i]) {
1799 if (!isalnum(card->snd_card->driver[i]))
1800 card->snd_card->driver[i] = '_';
1805 if (card->late_probe) {
1806 ret = card->late_probe(card);
1808 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
1810 goto probe_aux_dev_err;
1814 snd_soc_dapm_new_widgets(&card->dapm);
1816 if (card->fully_routed)
1817 list_for_each_entry(codec, &card->codec_dev_list, card_list)
1818 snd_soc_dapm_auto_nc_codec_pins(codec);
1820 ret = snd_card_register(card->snd_card);
1822 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
1824 goto probe_aux_dev_err;
1827 #ifdef CONFIG_SND_SOC_AC97_BUS
1828 /* register any AC97 codecs */
1829 for (i = 0; i < card->num_rtd; i++) {
1830 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1833 "ASoC: failed to register AC97: %d\n", ret);
1835 soc_unregister_ac97_dai_link(card->rtd[i].codec);
1836 goto probe_aux_dev_err;
1841 card->instantiated = 1;
1842 snd_soc_dapm_sync(&card->dapm);
1843 mutex_unlock(&card->mutex);
1848 for (i = 0; i < card->num_aux_devs; i++)
1849 soc_remove_aux_dev(card, i);
1852 soc_remove_dai_links(card);
1858 snd_card_free(card->snd_card);
1861 mutex_unlock(&card->mutex);
1866 /* probes a new socdev */
1867 static int soc_probe(struct platform_device *pdev)
1869 struct snd_soc_card *card = platform_get_drvdata(pdev);
1872 * no card, so machine driver should be registering card
1873 * we should not be here in that case so ret error
1878 dev_warn(&pdev->dev,
1879 "ASoC: machine %s should use snd_soc_register_card()\n",
1882 /* Bodge while we unpick instantiation */
1883 card->dev = &pdev->dev;
1885 return snd_soc_register_card(card);
1888 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1892 /* make sure any delayed work runs */
1893 for (i = 0; i < card->num_rtd; i++) {
1894 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1895 flush_delayed_work(&rtd->delayed_work);
1898 /* remove auxiliary devices */
1899 for (i = 0; i < card->num_aux_devs; i++)
1900 soc_remove_aux_dev(card, i);
1902 /* remove and free each DAI */
1903 soc_remove_dai_links(card);
1905 soc_cleanup_card_debugfs(card);
1907 /* remove the card */
1911 snd_soc_dapm_free(&card->dapm);
1913 snd_card_free(card->snd_card);
1918 /* removes a socdev */
1919 static int soc_remove(struct platform_device *pdev)
1921 struct snd_soc_card *card = platform_get_drvdata(pdev);
1923 snd_soc_unregister_card(card);
1927 int snd_soc_poweroff(struct device *dev)
1929 struct snd_soc_card *card = dev_get_drvdata(dev);
1932 if (!card->instantiated)
1935 /* Flush out pmdown_time work - we actually do want to run it
1936 * now, we're shutting down so no imminent restart. */
1937 for (i = 0; i < card->num_rtd; i++) {
1938 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1939 flush_delayed_work(&rtd->delayed_work);
1942 snd_soc_dapm_shutdown(card);
1946 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
1948 const struct dev_pm_ops snd_soc_pm_ops = {
1949 .suspend = snd_soc_suspend,
1950 .resume = snd_soc_resume,
1951 .freeze = snd_soc_suspend,
1952 .thaw = snd_soc_resume,
1953 .poweroff = snd_soc_poweroff,
1954 .restore = snd_soc_resume,
1956 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
1958 /* ASoC platform driver */
1959 static struct platform_driver soc_driver = {
1961 .name = "soc-audio",
1962 .owner = THIS_MODULE,
1963 .pm = &snd_soc_pm_ops,
1966 .remove = soc_remove,
1970 * snd_soc_codec_volatile_register: Report if a register is volatile.
1972 * @codec: CODEC to query.
1973 * @reg: Register to query.
1975 * Boolean function indiciating if a CODEC register is volatile.
1977 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
1980 if (codec->volatile_register)
1981 return codec->volatile_register(codec, reg);
1985 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
1988 * snd_soc_codec_readable_register: Report if a register is readable.
1990 * @codec: CODEC to query.
1991 * @reg: Register to query.
1993 * Boolean function indicating if a CODEC register is readable.
1995 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
1998 if (codec->readable_register)
1999 return codec->readable_register(codec, reg);
2003 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
2006 * snd_soc_codec_writable_register: Report if a register is writable.
2008 * @codec: CODEC to query.
2009 * @reg: Register to query.
2011 * Boolean function indicating if a CODEC register is writable.
2013 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
2016 if (codec->writable_register)
2017 return codec->writable_register(codec, reg);
2021 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
2023 int snd_soc_platform_read(struct snd_soc_platform *platform,
2028 if (!platform->driver->read) {
2029 dev_err(platform->dev, "ASoC: platform has no read back\n");
2033 ret = platform->driver->read(platform, reg);
2034 dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
2035 trace_snd_soc_preg_read(platform, reg, ret);
2039 EXPORT_SYMBOL_GPL(snd_soc_platform_read);
2041 int snd_soc_platform_write(struct snd_soc_platform *platform,
2042 unsigned int reg, unsigned int val)
2044 if (!platform->driver->write) {
2045 dev_err(platform->dev, "ASoC: platform has no write back\n");
2049 dev_dbg(platform->dev, "write %x = %x\n", reg, val);
2050 trace_snd_soc_preg_write(platform, reg, val);
2051 return platform->driver->write(platform, reg, val);
2053 EXPORT_SYMBOL_GPL(snd_soc_platform_write);
2056 * snd_soc_new_ac97_codec - initailise AC97 device
2057 * @codec: audio codec
2058 * @ops: AC97 bus operations
2059 * @num: AC97 codec number
2061 * Initialises AC97 codec resources for use by ad-hoc devices only.
2063 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
2064 struct snd_ac97_bus_ops *ops, int num)
2066 mutex_lock(&codec->mutex);
2068 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2069 if (codec->ac97 == NULL) {
2070 mutex_unlock(&codec->mutex);
2074 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
2075 if (codec->ac97->bus == NULL) {
2078 mutex_unlock(&codec->mutex);
2082 codec->ac97->bus->ops = ops;
2083 codec->ac97->num = num;
2086 * Mark the AC97 device to be created by us. This way we ensure that the
2087 * device will be registered with the device subsystem later on.
2089 codec->ac97_created = 1;
2091 mutex_unlock(&codec->mutex);
2094 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
2096 static struct snd_ac97_reset_cfg snd_ac97_rst_cfg;
2098 static void snd_soc_ac97_warm_reset(struct snd_ac97 *ac97)
2100 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2102 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_warm_reset);
2104 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 1);
2108 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2110 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2114 static void snd_soc_ac97_reset(struct snd_ac97 *ac97)
2116 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2118 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_reset);
2120 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2121 gpio_direction_output(snd_ac97_rst_cfg.gpio_sdata, 0);
2122 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 0);
2126 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 1);
2128 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2132 static int snd_soc_ac97_parse_pinctl(struct device *dev,
2133 struct snd_ac97_reset_cfg *cfg)
2136 struct pinctrl_state *state;
2140 p = devm_pinctrl_get(dev);
2142 dev_err(dev, "Failed to get pinctrl\n");
2147 state = pinctrl_lookup_state(p, "ac97-reset");
2148 if (IS_ERR(state)) {
2149 dev_err(dev, "Can't find pinctrl state ac97-reset\n");
2150 return PTR_RET(state);
2152 cfg->pstate_reset = state;
2154 state = pinctrl_lookup_state(p, "ac97-warm-reset");
2155 if (IS_ERR(state)) {
2156 dev_err(dev, "Can't find pinctrl state ac97-warm-reset\n");
2157 return PTR_RET(state);
2159 cfg->pstate_warm_reset = state;
2161 state = pinctrl_lookup_state(p, "ac97-running");
2162 if (IS_ERR(state)) {
2163 dev_err(dev, "Can't find pinctrl state ac97-running\n");
2164 return PTR_RET(state);
2166 cfg->pstate_run = state;
2168 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 0);
2170 dev_err(dev, "Can't find ac97-sync gpio\n");
2173 ret = devm_gpio_request(dev, gpio, "AC97 link sync");
2175 dev_err(dev, "Failed requesting ac97-sync gpio\n");
2178 cfg->gpio_sync = gpio;
2180 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 1);
2182 dev_err(dev, "Can't find ac97-sdata gpio %d\n", gpio);
2185 ret = devm_gpio_request(dev, gpio, "AC97 link sdata");
2187 dev_err(dev, "Failed requesting ac97-sdata gpio\n");
2190 cfg->gpio_sdata = gpio;
2192 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 2);
2194 dev_err(dev, "Can't find ac97-reset gpio\n");
2197 ret = devm_gpio_request(dev, gpio, "AC97 link reset");
2199 dev_err(dev, "Failed requesting ac97-reset gpio\n");
2202 cfg->gpio_reset = gpio;
2207 struct snd_ac97_bus_ops *soc_ac97_ops;
2208 EXPORT_SYMBOL_GPL(soc_ac97_ops);
2210 int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops)
2212 if (ops == soc_ac97_ops)
2215 if (soc_ac97_ops && ops)
2222 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops);
2225 * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions
2227 * This function sets the reset and warm_reset properties of ops and parses
2228 * the device node of pdev to get pinctrl states and gpio numbers to use.
2230 int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops,
2231 struct platform_device *pdev)
2233 struct device *dev = &pdev->dev;
2234 struct snd_ac97_reset_cfg cfg;
2237 ret = snd_soc_ac97_parse_pinctl(dev, &cfg);
2241 ret = snd_soc_set_ac97_ops(ops);
2245 ops->warm_reset = snd_soc_ac97_warm_reset;
2246 ops->reset = snd_soc_ac97_reset;
2248 snd_ac97_rst_cfg = cfg;
2251 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset);
2254 * snd_soc_free_ac97_codec - free AC97 codec device
2255 * @codec: audio codec
2257 * Frees AC97 codec device resources.
2259 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
2261 mutex_lock(&codec->mutex);
2262 #ifdef CONFIG_SND_SOC_AC97_BUS
2263 soc_unregister_ac97_dai_link(codec);
2265 kfree(codec->ac97->bus);
2268 codec->ac97_created = 0;
2269 mutex_unlock(&codec->mutex);
2271 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
2273 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
2277 ret = codec->read(codec, reg);
2278 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
2279 trace_snd_soc_reg_read(codec, reg, ret);
2283 EXPORT_SYMBOL_GPL(snd_soc_read);
2285 unsigned int snd_soc_write(struct snd_soc_codec *codec,
2286 unsigned int reg, unsigned int val)
2288 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
2289 trace_snd_soc_reg_write(codec, reg, val);
2290 return codec->write(codec, reg, val);
2292 EXPORT_SYMBOL_GPL(snd_soc_write);
2294 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
2295 unsigned int reg, const void *data, size_t len)
2297 return codec->bulk_write_raw(codec, reg, data, len);
2299 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw);
2302 * snd_soc_update_bits - update codec register bits
2303 * @codec: audio codec
2304 * @reg: codec register
2305 * @mask: register mask
2308 * Writes new register value.
2310 * Returns 1 for change, 0 for no change, or negative error code.
2312 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
2313 unsigned int mask, unsigned int value)
2316 unsigned int old, new;
2319 if (codec->using_regmap) {
2320 ret = regmap_update_bits_check(codec->control_data, reg,
2321 mask, value, &change);
2323 ret = snd_soc_read(codec, reg);
2328 new = (old & ~mask) | (value & mask);
2329 change = old != new;
2331 ret = snd_soc_write(codec, reg, new);
2339 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
2342 * snd_soc_update_bits_locked - update codec register bits
2343 * @codec: audio codec
2344 * @reg: codec register
2345 * @mask: register mask
2348 * Writes new register value, and takes the codec mutex.
2350 * Returns 1 for change else 0.
2352 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
2353 unsigned short reg, unsigned int mask,
2358 mutex_lock(&codec->mutex);
2359 change = snd_soc_update_bits(codec, reg, mask, value);
2360 mutex_unlock(&codec->mutex);
2364 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
2367 * snd_soc_test_bits - test register for change
2368 * @codec: audio codec
2369 * @reg: codec register
2370 * @mask: register mask
2373 * Tests a register with a new value and checks if the new value is
2374 * different from the old value.
2376 * Returns 1 for change else 0.
2378 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
2379 unsigned int mask, unsigned int value)
2382 unsigned int old, new;
2384 old = snd_soc_read(codec, reg);
2385 new = (old & ~mask) | value;
2386 change = old != new;
2390 EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2393 * snd_soc_cnew - create new control
2394 * @_template: control template
2395 * @data: control private data
2396 * @long_name: control long name
2397 * @prefix: control name prefix
2399 * Create a new mixer control from a template control.
2401 * Returns 0 for success, else error.
2403 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2404 void *data, const char *long_name,
2407 struct snd_kcontrol_new template;
2408 struct snd_kcontrol *kcontrol;
2411 memcpy(&template, _template, sizeof(template));
2415 long_name = template.name;
2418 name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
2422 template.name = name;
2424 template.name = long_name;
2427 kcontrol = snd_ctl_new1(&template, data);
2433 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2435 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2436 const struct snd_kcontrol_new *controls, int num_controls,
2437 const char *prefix, void *data)
2441 for (i = 0; i < num_controls; i++) {
2442 const struct snd_kcontrol_new *control = &controls[i];
2443 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2444 control->name, prefix));
2446 dev_err(dev, "ASoC: Failed to add %s: %d\n",
2447 control->name, err);
2456 * snd_soc_add_codec_controls - add an array of controls to a codec.
2457 * Convenience function to add a list of controls. Many codecs were
2458 * duplicating this code.
2460 * @codec: codec to add controls to
2461 * @controls: array of controls to add
2462 * @num_controls: number of elements in the array
2464 * Return 0 for success, else error.
2466 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2467 const struct snd_kcontrol_new *controls, int num_controls)
2469 struct snd_card *card = codec->card->snd_card;
2471 return snd_soc_add_controls(card, codec->dev, controls, num_controls,
2472 codec->name_prefix, codec);
2474 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2477 * snd_soc_add_platform_controls - add an array of controls to a platform.
2478 * Convenience function to add a list of controls.
2480 * @platform: platform to add controls to
2481 * @controls: array of controls to add
2482 * @num_controls: number of elements in the array
2484 * Return 0 for success, else error.
2486 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2487 const struct snd_kcontrol_new *controls, int num_controls)
2489 struct snd_card *card = platform->card->snd_card;
2491 return snd_soc_add_controls(card, platform->dev, controls, num_controls,
2494 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2497 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2498 * Convenience function to add a list of controls.
2500 * @soc_card: SoC card to add controls to
2501 * @controls: array of controls to add
2502 * @num_controls: number of elements in the array
2504 * Return 0 for success, else error.
2506 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2507 const struct snd_kcontrol_new *controls, int num_controls)
2509 struct snd_card *card = soc_card->snd_card;
2511 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2514 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2517 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2518 * Convienience function to add a list of controls.
2520 * @dai: DAI to add controls to
2521 * @controls: array of controls to add
2522 * @num_controls: number of elements in the array
2524 * Return 0 for success, else error.
2526 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2527 const struct snd_kcontrol_new *controls, int num_controls)
2529 struct snd_card *card = dai->card->snd_card;
2531 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2534 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2537 * snd_soc_info_enum_double - enumerated double mixer info callback
2538 * @kcontrol: mixer control
2539 * @uinfo: control element information
2541 * Callback to provide information about a double enumerated
2544 * Returns 0 for success.
2546 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2547 struct snd_ctl_elem_info *uinfo)
2549 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2551 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2552 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2553 uinfo->value.enumerated.items = e->max;
2555 if (uinfo->value.enumerated.item > e->max - 1)
2556 uinfo->value.enumerated.item = e->max - 1;
2557 strcpy(uinfo->value.enumerated.name,
2558 e->texts[uinfo->value.enumerated.item]);
2561 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2564 * snd_soc_get_enum_double - enumerated double mixer get callback
2565 * @kcontrol: mixer control
2566 * @ucontrol: control element information
2568 * Callback to get the value of a double enumerated mixer.
2570 * Returns 0 for success.
2572 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2573 struct snd_ctl_elem_value *ucontrol)
2575 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2576 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2579 val = snd_soc_read(codec, e->reg);
2580 ucontrol->value.enumerated.item[0]
2581 = (val >> e->shift_l) & e->mask;
2582 if (e->shift_l != e->shift_r)
2583 ucontrol->value.enumerated.item[1] =
2584 (val >> e->shift_r) & e->mask;
2588 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2591 * snd_soc_put_enum_double - enumerated double mixer put callback
2592 * @kcontrol: mixer control
2593 * @ucontrol: control element information
2595 * Callback to set the value of a double enumerated mixer.
2597 * Returns 0 for success.
2599 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2600 struct snd_ctl_elem_value *ucontrol)
2602 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2603 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2607 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2609 val = ucontrol->value.enumerated.item[0] << e->shift_l;
2610 mask = e->mask << e->shift_l;
2611 if (e->shift_l != e->shift_r) {
2612 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2614 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2615 mask |= e->mask << e->shift_r;
2618 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2620 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2623 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2624 * @kcontrol: mixer control
2625 * @ucontrol: control element information
2627 * Callback to get the value of a double semi enumerated mixer.
2629 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2630 * used for handling bitfield coded enumeration for example.
2632 * Returns 0 for success.
2634 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
2635 struct snd_ctl_elem_value *ucontrol)
2637 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2638 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2639 unsigned int reg_val, val, mux;
2641 reg_val = snd_soc_read(codec, e->reg);
2642 val = (reg_val >> e->shift_l) & e->mask;
2643 for (mux = 0; mux < e->max; mux++) {
2644 if (val == e->values[mux])
2647 ucontrol->value.enumerated.item[0] = mux;
2648 if (e->shift_l != e->shift_r) {
2649 val = (reg_val >> e->shift_r) & e->mask;
2650 for (mux = 0; mux < e->max; mux++) {
2651 if (val == e->values[mux])
2654 ucontrol->value.enumerated.item[1] = mux;
2659 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
2662 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2663 * @kcontrol: mixer control
2664 * @ucontrol: control element information
2666 * Callback to set the value of a double semi enumerated mixer.
2668 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2669 * used for handling bitfield coded enumeration for example.
2671 * Returns 0 for success.
2673 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
2674 struct snd_ctl_elem_value *ucontrol)
2676 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2677 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2681 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2683 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2684 mask = e->mask << e->shift_l;
2685 if (e->shift_l != e->shift_r) {
2686 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2688 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2689 mask |= e->mask << e->shift_r;
2692 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2694 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
2697 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2698 * @kcontrol: mixer control
2699 * @uinfo: control element information
2701 * Callback to provide information about an external enumerated
2704 * Returns 0 for success.
2706 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
2707 struct snd_ctl_elem_info *uinfo)
2709 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2711 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2713 uinfo->value.enumerated.items = e->max;
2715 if (uinfo->value.enumerated.item > e->max - 1)
2716 uinfo->value.enumerated.item = e->max - 1;
2717 strcpy(uinfo->value.enumerated.name,
2718 e->texts[uinfo->value.enumerated.item]);
2721 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);
2724 * snd_soc_info_volsw_ext - external single mixer info callback
2725 * @kcontrol: mixer control
2726 * @uinfo: control element information
2728 * Callback to provide information about a single external mixer control.
2730 * Returns 0 for success.
2732 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
2733 struct snd_ctl_elem_info *uinfo)
2735 int max = kcontrol->private_value;
2737 if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
2738 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2740 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2743 uinfo->value.integer.min = 0;
2744 uinfo->value.integer.max = max;
2747 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);
2750 * snd_soc_info_volsw - single mixer info callback
2751 * @kcontrol: mixer control
2752 * @uinfo: control element information
2754 * Callback to provide information about a single mixer control, or a double
2755 * mixer control that spans 2 registers.
2757 * Returns 0 for success.
2759 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2760 struct snd_ctl_elem_info *uinfo)
2762 struct soc_mixer_control *mc =
2763 (struct soc_mixer_control *)kcontrol->private_value;
2766 if (!mc->platform_max)
2767 mc->platform_max = mc->max;
2768 platform_max = mc->platform_max;
2770 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2771 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2773 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2775 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2776 uinfo->value.integer.min = 0;
2777 uinfo->value.integer.max = platform_max;
2780 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2783 * snd_soc_get_volsw - single mixer get callback
2784 * @kcontrol: mixer control
2785 * @ucontrol: control element information
2787 * Callback to get the value of a single mixer control, or a double mixer
2788 * control that spans 2 registers.
2790 * Returns 0 for success.
2792 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2793 struct snd_ctl_elem_value *ucontrol)
2795 struct soc_mixer_control *mc =
2796 (struct soc_mixer_control *)kcontrol->private_value;
2797 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2798 unsigned int reg = mc->reg;
2799 unsigned int reg2 = mc->rreg;
2800 unsigned int shift = mc->shift;
2801 unsigned int rshift = mc->rshift;
2803 unsigned int mask = (1 << fls(max)) - 1;
2804 unsigned int invert = mc->invert;
2806 ucontrol->value.integer.value[0] =
2807 (snd_soc_read(codec, reg) >> shift) & mask;
2809 ucontrol->value.integer.value[0] =
2810 max - ucontrol->value.integer.value[0];
2812 if (snd_soc_volsw_is_stereo(mc)) {
2814 ucontrol->value.integer.value[1] =
2815 (snd_soc_read(codec, reg) >> rshift) & mask;
2817 ucontrol->value.integer.value[1] =
2818 (snd_soc_read(codec, reg2) >> shift) & mask;
2820 ucontrol->value.integer.value[1] =
2821 max - ucontrol->value.integer.value[1];
2826 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2829 * snd_soc_put_volsw - single mixer put callback
2830 * @kcontrol: mixer control
2831 * @ucontrol: control element information
2833 * Callback to set the value of a single mixer control, or a double mixer
2834 * control that spans 2 registers.
2836 * Returns 0 for success.
2838 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2839 struct snd_ctl_elem_value *ucontrol)
2841 struct soc_mixer_control *mc =
2842 (struct soc_mixer_control *)kcontrol->private_value;
2843 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2844 unsigned int reg = mc->reg;
2845 unsigned int reg2 = mc->rreg;
2846 unsigned int shift = mc->shift;
2847 unsigned int rshift = mc->rshift;
2849 unsigned int mask = (1 << fls(max)) - 1;
2850 unsigned int invert = mc->invert;
2853 unsigned int val2 = 0;
2854 unsigned int val, val_mask;
2856 val = (ucontrol->value.integer.value[0] & mask);
2859 val_mask = mask << shift;
2861 if (snd_soc_volsw_is_stereo(mc)) {
2862 val2 = (ucontrol->value.integer.value[1] & mask);
2866 val_mask |= mask << rshift;
2867 val |= val2 << rshift;
2869 val2 = val2 << shift;
2873 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2878 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2882 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2885 * snd_soc_get_volsw_sx - single mixer get callback
2886 * @kcontrol: mixer control
2887 * @ucontrol: control element information
2889 * Callback to get the value of a single mixer control, or a double mixer
2890 * control that spans 2 registers.
2892 * Returns 0 for success.
2894 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
2895 struct snd_ctl_elem_value *ucontrol)
2897 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2898 struct soc_mixer_control *mc =
2899 (struct soc_mixer_control *)kcontrol->private_value;
2901 unsigned int reg = mc->reg;
2902 unsigned int reg2 = mc->rreg;
2903 unsigned int shift = mc->shift;
2904 unsigned int rshift = mc->rshift;
2907 int mask = (1 << (fls(min + max) - 1)) - 1;
2909 ucontrol->value.integer.value[0] =
2910 ((snd_soc_read(codec, reg) >> shift) - min) & mask;
2912 if (snd_soc_volsw_is_stereo(mc))
2913 ucontrol->value.integer.value[1] =
2914 ((snd_soc_read(codec, reg2) >> rshift) - min) & mask;
2918 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
2921 * snd_soc_put_volsw_sx - double mixer set callback
2922 * @kcontrol: mixer control
2923 * @uinfo: control element information
2925 * Callback to set the value of a double mixer control that spans 2 registers.
2927 * Returns 0 for success.
2929 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
2930 struct snd_ctl_elem_value *ucontrol)
2932 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2933 struct soc_mixer_control *mc =
2934 (struct soc_mixer_control *)kcontrol->private_value;
2936 unsigned int reg = mc->reg;
2937 unsigned int reg2 = mc->rreg;
2938 unsigned int shift = mc->shift;
2939 unsigned int rshift = mc->rshift;
2942 int mask = (1 << (fls(min + max) - 1)) - 1;
2944 unsigned short val, val_mask, val2 = 0;
2946 val_mask = mask << shift;
2947 val = (ucontrol->value.integer.value[0] + min) & mask;
2950 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2954 if (snd_soc_volsw_is_stereo(mc)) {
2955 val_mask = mask << rshift;
2956 val2 = (ucontrol->value.integer.value[1] + min) & mask;
2957 val2 = val2 << rshift;
2959 if (snd_soc_update_bits_locked(codec, reg2, val_mask, val2))
2964 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
2967 * snd_soc_info_volsw_s8 - signed mixer info callback
2968 * @kcontrol: mixer control
2969 * @uinfo: control element information
2971 * Callback to provide information about a signed mixer control.
2973 * Returns 0 for success.
2975 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2976 struct snd_ctl_elem_info *uinfo)
2978 struct soc_mixer_control *mc =
2979 (struct soc_mixer_control *)kcontrol->private_value;
2983 if (!mc->platform_max)
2984 mc->platform_max = mc->max;
2985 platform_max = mc->platform_max;
2987 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2989 uinfo->value.integer.min = 0;
2990 uinfo->value.integer.max = platform_max - min;
2993 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2996 * snd_soc_get_volsw_s8 - signed mixer get callback
2997 * @kcontrol: mixer control
2998 * @ucontrol: control element information
3000 * Callback to get the value of a signed mixer control.
3002 * Returns 0 for success.
3004 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
3005 struct snd_ctl_elem_value *ucontrol)
3007 struct soc_mixer_control *mc =
3008 (struct soc_mixer_control *)kcontrol->private_value;
3009 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3010 unsigned int reg = mc->reg;
3012 int val = snd_soc_read(codec, reg);
3014 ucontrol->value.integer.value[0] =
3015 ((signed char)(val & 0xff))-min;
3016 ucontrol->value.integer.value[1] =
3017 ((signed char)((val >> 8) & 0xff))-min;
3020 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
3023 * snd_soc_put_volsw_sgn - signed mixer put callback
3024 * @kcontrol: mixer control
3025 * @ucontrol: control element information
3027 * Callback to set the value of a signed mixer control.
3029 * Returns 0 for success.
3031 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
3032 struct snd_ctl_elem_value *ucontrol)
3034 struct soc_mixer_control *mc =
3035 (struct soc_mixer_control *)kcontrol->private_value;
3036 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3037 unsigned int reg = mc->reg;
3041 val = (ucontrol->value.integer.value[0]+min) & 0xff;
3042 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
3044 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
3046 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
3049 * snd_soc_info_volsw_range - single mixer info callback with range.
3050 * @kcontrol: mixer control
3051 * @uinfo: control element information
3053 * Callback to provide information, within a range, about a single
3056 * returns 0 for success.
3058 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
3059 struct snd_ctl_elem_info *uinfo)
3061 struct soc_mixer_control *mc =
3062 (struct soc_mixer_control *)kcontrol->private_value;
3066 if (!mc->platform_max)
3067 mc->platform_max = mc->max;
3068 platform_max = mc->platform_max;
3070 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3071 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
3072 uinfo->value.integer.min = 0;
3073 uinfo->value.integer.max = platform_max - min;
3077 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
3080 * snd_soc_put_volsw_range - single mixer put value callback with range.
3081 * @kcontrol: mixer control
3082 * @ucontrol: control element information
3084 * Callback to set the value, within a range, for a single mixer control.
3086 * Returns 0 for success.
3088 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
3089 struct snd_ctl_elem_value *ucontrol)
3091 struct soc_mixer_control *mc =
3092 (struct soc_mixer_control *)kcontrol->private_value;
3093 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3094 unsigned int reg = mc->reg;
3095 unsigned int rreg = mc->rreg;
3096 unsigned int shift = mc->shift;
3099 unsigned int mask = (1 << fls(max)) - 1;
3100 unsigned int invert = mc->invert;
3101 unsigned int val, val_mask;
3104 val = ((ucontrol->value.integer.value[0] + min) & mask);
3107 val_mask = mask << shift;
3110 ret = snd_soc_update_bits_locked(codec, reg, val_mask, val);
3114 if (snd_soc_volsw_is_stereo(mc)) {
3115 val = ((ucontrol->value.integer.value[1] + min) & mask);
3118 val_mask = mask << shift;
3121 ret = snd_soc_update_bits_locked(codec, rreg, val_mask, val);
3126 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
3129 * snd_soc_get_volsw_range - single mixer get callback with range
3130 * @kcontrol: mixer control
3131 * @ucontrol: control element information
3133 * Callback to get the value, within a range, of a single mixer control.
3135 * Returns 0 for success.
3137 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
3138 struct snd_ctl_elem_value *ucontrol)
3140 struct soc_mixer_control *mc =
3141 (struct soc_mixer_control *)kcontrol->private_value;
3142 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3143 unsigned int reg = mc->reg;
3144 unsigned int rreg = mc->rreg;
3145 unsigned int shift = mc->shift;
3148 unsigned int mask = (1 << fls(max)) - 1;
3149 unsigned int invert = mc->invert;
3151 ucontrol->value.integer.value[0] =
3152 (snd_soc_read(codec, reg) >> shift) & mask;
3154 ucontrol->value.integer.value[0] =
3155 max - ucontrol->value.integer.value[0];
3156 ucontrol->value.integer.value[0] =
3157 ucontrol->value.integer.value[0] - min;
3159 if (snd_soc_volsw_is_stereo(mc)) {
3160 ucontrol->value.integer.value[1] =
3161 (snd_soc_read(codec, rreg) >> shift) & mask;
3163 ucontrol->value.integer.value[1] =
3164 max - ucontrol->value.integer.value[1];
3165 ucontrol->value.integer.value[1] =
3166 ucontrol->value.integer.value[1] - min;
3171 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
3174 * snd_soc_limit_volume - Set new limit to an existing volume control.
3176 * @codec: where to look for the control
3177 * @name: Name of the control
3178 * @max: new maximum limit
3180 * Return 0 for success, else error.
3182 int snd_soc_limit_volume(struct snd_soc_codec *codec,
3183 const char *name, int max)
3185 struct snd_card *card = codec->card->snd_card;
3186 struct snd_kcontrol *kctl;
3187 struct soc_mixer_control *mc;
3191 /* Sanity check for name and max */
3192 if (unlikely(!name || max <= 0))
3195 list_for_each_entry(kctl, &card->controls, list) {
3196 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
3202 mc = (struct soc_mixer_control *)kctl->private_value;
3203 if (max <= mc->max) {
3204 mc->platform_max = max;
3210 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
3212 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
3213 struct snd_ctl_elem_info *uinfo)
3215 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3216 struct soc_bytes *params = (void *)kcontrol->private_value;
3218 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
3219 uinfo->count = params->num_regs * codec->val_bytes;
3223 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
3225 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
3226 struct snd_ctl_elem_value *ucontrol)
3228 struct soc_bytes *params = (void *)kcontrol->private_value;
3229 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3232 if (codec->using_regmap)
3233 ret = regmap_raw_read(codec->control_data, params->base,
3234 ucontrol->value.bytes.data,
3235 params->num_regs * codec->val_bytes);
3239 /* Hide any masked bytes to ensure consistent data reporting */
3240 if (ret == 0 && params->mask) {
3241 switch (codec->val_bytes) {
3243 ucontrol->value.bytes.data[0] &= ~params->mask;
3246 ((u16 *)(&ucontrol->value.bytes.data))[0]
3250 ((u32 *)(&ucontrol->value.bytes.data))[0]
3260 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
3262 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
3263 struct snd_ctl_elem_value *ucontrol)
3265 struct soc_bytes *params = (void *)kcontrol->private_value;
3266 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3271 if (!codec->using_regmap)
3274 len = params->num_regs * codec->val_bytes;
3276 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
3281 * If we've got a mask then we need to preserve the register
3282 * bits. We shouldn't modify the incoming data so take a
3286 ret = regmap_read(codec->control_data, params->base, &val);
3290 val &= params->mask;
3292 switch (codec->val_bytes) {
3294 ((u8 *)data)[0] &= ~params->mask;
3295 ((u8 *)data)[0] |= val;
3298 ((u16 *)data)[0] &= cpu_to_be16(~params->mask);
3299 ((u16 *)data)[0] |= cpu_to_be16(val);
3302 ((u32 *)data)[0] &= cpu_to_be32(~params->mask);
3303 ((u32 *)data)[0] |= cpu_to_be32(val);
3311 ret = regmap_raw_write(codec->control_data, params->base,
3319 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
3322 * snd_soc_info_xr_sx - signed multi register info callback
3323 * @kcontrol: mreg control
3324 * @uinfo: control element information
3326 * Callback to provide information of a control that can
3327 * span multiple codec registers which together
3328 * forms a single signed value in a MSB/LSB manner.
3330 * Returns 0 for success.
3332 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
3333 struct snd_ctl_elem_info *uinfo)
3335 struct soc_mreg_control *mc =
3336 (struct soc_mreg_control *)kcontrol->private_value;
3337 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3339 uinfo->value.integer.min = mc->min;
3340 uinfo->value.integer.max = mc->max;
3344 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
3347 * snd_soc_get_xr_sx - signed multi register get callback
3348 * @kcontrol: mreg control
3349 * @ucontrol: control element information
3351 * Callback to get the value of a control that can span
3352 * multiple codec registers which together forms a single
3353 * signed value in a MSB/LSB manner. The control supports
3354 * specifying total no of bits used to allow for bitfields
3355 * across the multiple codec registers.
3357 * Returns 0 for success.
3359 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
3360 struct snd_ctl_elem_value *ucontrol)
3362 struct soc_mreg_control *mc =
3363 (struct soc_mreg_control *)kcontrol->private_value;
3364 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3365 unsigned int regbase = mc->regbase;
3366 unsigned int regcount = mc->regcount;
3367 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3368 unsigned int regwmask = (1<<regwshift)-1;
3369 unsigned int invert = mc->invert;
3370 unsigned long mask = (1UL<<mc->nbits)-1;
3374 unsigned long regval;
3377 for (i = 0; i < regcount; i++) {
3378 regval = snd_soc_read(codec, regbase+i) & regwmask;
3379 val |= regval << (regwshift*(regcount-i-1));
3382 if (min < 0 && val > max)
3386 ucontrol->value.integer.value[0] = val;
3390 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
3393 * snd_soc_put_xr_sx - signed multi register get callback
3394 * @kcontrol: mreg control
3395 * @ucontrol: control element information
3397 * Callback to set the value of a control that can span
3398 * multiple codec registers which together forms a single
3399 * signed value in a MSB/LSB manner. The control supports
3400 * specifying total no of bits used to allow for bitfields
3401 * across the multiple codec registers.
3403 * Returns 0 for success.
3405 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
3406 struct snd_ctl_elem_value *ucontrol)
3408 struct soc_mreg_control *mc =
3409 (struct soc_mreg_control *)kcontrol->private_value;
3410 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3411 unsigned int regbase = mc->regbase;
3412 unsigned int regcount = mc->regcount;
3413 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3414 unsigned int regwmask = (1<<regwshift)-1;
3415 unsigned int invert = mc->invert;
3416 unsigned long mask = (1UL<<mc->nbits)-1;
3418 long val = ucontrol->value.integer.value[0];
3419 unsigned int i, regval, regmask;
3425 for (i = 0; i < regcount; i++) {
3426 regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
3427 regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
3428 err = snd_soc_update_bits_locked(codec, regbase+i,
3436 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
3439 * snd_soc_get_strobe - strobe get callback
3440 * @kcontrol: mixer control
3441 * @ucontrol: control element information
3443 * Callback get the value of a strobe mixer control.
3445 * Returns 0 for success.
3447 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
3448 struct snd_ctl_elem_value *ucontrol)
3450 struct soc_mixer_control *mc =
3451 (struct soc_mixer_control *)kcontrol->private_value;
3452 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3453 unsigned int reg = mc->reg;
3454 unsigned int shift = mc->shift;
3455 unsigned int mask = 1 << shift;
3456 unsigned int invert = mc->invert != 0;
3457 unsigned int val = snd_soc_read(codec, reg) & mask;
3459 if (shift != 0 && val != 0)
3461 ucontrol->value.enumerated.item[0] = val ^ invert;
3465 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
3468 * snd_soc_put_strobe - strobe put callback
3469 * @kcontrol: mixer control
3470 * @ucontrol: control element information
3472 * Callback strobe a register bit to high then low (or the inverse)
3473 * in one pass of a single mixer enum control.
3475 * Returns 1 for success.
3477 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
3478 struct snd_ctl_elem_value *ucontrol)
3480 struct soc_mixer_control *mc =
3481 (struct soc_mixer_control *)kcontrol->private_value;
3482 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3483 unsigned int reg = mc->reg;
3484 unsigned int shift = mc->shift;
3485 unsigned int mask = 1 << shift;
3486 unsigned int invert = mc->invert != 0;
3487 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
3488 unsigned int val1 = (strobe ^ invert) ? mask : 0;
3489 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
3492 err = snd_soc_update_bits_locked(codec, reg, mask, val1);
3496 err = snd_soc_update_bits_locked(codec, reg, mask, val2);
3499 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);
3502 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3504 * @clk_id: DAI specific clock ID
3505 * @freq: new clock frequency in Hz
3506 * @dir: new clock direction - input/output.
3508 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3510 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
3511 unsigned int freq, int dir)
3513 if (dai->driver && dai->driver->ops->set_sysclk)
3514 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
3515 else if (dai->codec && dai->codec->driver->set_sysclk)
3516 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
3521 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
3524 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3526 * @clk_id: DAI specific clock ID
3527 * @source: Source for the clock
3528 * @freq: new clock frequency in Hz
3529 * @dir: new clock direction - input/output.
3531 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3533 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
3534 int source, unsigned int freq, int dir)
3536 if (codec->driver->set_sysclk)
3537 return codec->driver->set_sysclk(codec, clk_id, source,
3542 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
3545 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3547 * @div_id: DAI specific clock divider ID
3548 * @div: new clock divisor.
3550 * Configures the clock dividers. This is used to derive the best DAI bit and
3551 * frame clocks from the system or master clock. It's best to set the DAI bit
3552 * and frame clocks as low as possible to save system power.
3554 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
3555 int div_id, int div)
3557 if (dai->driver && dai->driver->ops->set_clkdiv)
3558 return dai->driver->ops->set_clkdiv(dai, div_id, div);
3562 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
3565 * snd_soc_dai_set_pll - configure DAI PLL.
3567 * @pll_id: DAI specific PLL ID
3568 * @source: DAI specific source for the PLL
3569 * @freq_in: PLL input clock frequency in Hz
3570 * @freq_out: requested PLL output clock frequency in Hz
3572 * Configures and enables PLL to generate output clock based on input clock.
3574 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
3575 unsigned int freq_in, unsigned int freq_out)
3577 if (dai->driver && dai->driver->ops->set_pll)
3578 return dai->driver->ops->set_pll(dai, pll_id, source,
3580 else if (dai->codec && dai->codec->driver->set_pll)
3581 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
3586 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
3589 * snd_soc_codec_set_pll - configure codec PLL.
3591 * @pll_id: DAI specific PLL ID
3592 * @source: DAI specific source for the PLL
3593 * @freq_in: PLL input clock frequency in Hz
3594 * @freq_out: requested PLL output clock frequency in Hz
3596 * Configures and enables PLL to generate output clock based on input clock.
3598 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
3599 unsigned int freq_in, unsigned int freq_out)
3601 if (codec->driver->set_pll)
3602 return codec->driver->set_pll(codec, pll_id, source,
3607 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
3610 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3612 * @fmt: SND_SOC_DAIFMT_ format value.
3614 * Configures the DAI hardware format and clocking.
3616 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
3618 if (dai->driver == NULL)
3620 if (dai->driver->ops->set_fmt == NULL)
3622 return dai->driver->ops->set_fmt(dai, fmt);
3624 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
3627 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3629 * @tx_mask: bitmask representing active TX slots.
3630 * @rx_mask: bitmask representing active RX slots.
3631 * @slots: Number of slots in use.
3632 * @slot_width: Width in bits for each slot.
3634 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3637 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
3638 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3640 if (dai->driver && dai->driver->ops->set_tdm_slot)
3641 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3646 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3649 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3651 * @tx_num: how many TX channels
3652 * @tx_slot: pointer to an array which imply the TX slot number channel
3654 * @rx_num: how many RX channels
3655 * @rx_slot: pointer to an array which imply the RX slot number channel
3658 * configure the relationship between channel number and TDM slot number.
3660 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3661 unsigned int tx_num, unsigned int *tx_slot,
3662 unsigned int rx_num, unsigned int *rx_slot)
3664 if (dai->driver && dai->driver->ops->set_channel_map)
3665 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3670 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3673 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3675 * @tristate: tristate enable
3677 * Tristates the DAI so that others can use it.
3679 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3681 if (dai->driver && dai->driver->ops->set_tristate)
3682 return dai->driver->ops->set_tristate(dai, tristate);
3686 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3689 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3691 * @mute: mute enable
3692 * @direction: stream to mute
3694 * Mutes the DAI DAC.
3696 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
3702 if (dai->driver->ops->mute_stream)
3703 return dai->driver->ops->mute_stream(dai, mute, direction);
3704 else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
3705 dai->driver->ops->digital_mute)
3706 return dai->driver->ops->digital_mute(dai, mute);
3710 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3713 * snd_soc_register_card - Register a card with the ASoC core
3715 * @card: Card to register
3718 int snd_soc_register_card(struct snd_soc_card *card)
3722 if (!card->name || !card->dev)
3725 for (i = 0; i < card->num_links; i++) {
3726 struct snd_soc_dai_link *link = &card->dai_link[i];
3729 * Codec must be specified by 1 of name or OF node,
3730 * not both or neither.
3732 if (!!link->codec_name == !!link->codec_of_node) {
3734 "ASoC: Neither/both codec name/of_node are set for %s\n",
3738 /* Codec DAI name must be specified */
3739 if (!link->codec_dai_name) {
3741 "ASoC: codec_dai_name not set for %s\n",
3747 * Platform may be specified by either name or OF node, but
3748 * can be left unspecified, and a dummy platform will be used.
3750 if (link->platform_name && link->platform_of_node) {
3752 "ASoC: Both platform name/of_node are set for %s\n",
3758 * CPU device may be specified by either name or OF node, but
3759 * can be left unspecified, and will be matched based on DAI
3762 if (link->cpu_name && link->cpu_of_node) {
3764 "ASoC: Neither/both cpu name/of_node are set for %s\n",
3769 * At least one of CPU DAI name or CPU device name/node must be
3772 if (!link->cpu_dai_name &&
3773 !(link->cpu_name || link->cpu_of_node)) {
3775 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
3781 dev_set_drvdata(card->dev, card);
3783 snd_soc_initialize_card_lists(card);
3785 soc_init_card_debugfs(card);
3787 card->rtd = devm_kzalloc(card->dev,
3788 sizeof(struct snd_soc_pcm_runtime) *
3789 (card->num_links + card->num_aux_devs),
3791 if (card->rtd == NULL)
3794 card->rtd_aux = &card->rtd[card->num_links];
3796 for (i = 0; i < card->num_links; i++)
3797 card->rtd[i].dai_link = &card->dai_link[i];
3799 INIT_LIST_HEAD(&card->list);
3800 INIT_LIST_HEAD(&card->dapm_dirty);
3801 card->instantiated = 0;
3802 mutex_init(&card->mutex);
3803 mutex_init(&card->dapm_mutex);
3805 ret = snd_soc_instantiate_card(card);
3807 soc_cleanup_card_debugfs(card);
3811 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3814 * snd_soc_unregister_card - Unregister a card with the ASoC core
3816 * @card: Card to unregister
3819 int snd_soc_unregister_card(struct snd_soc_card *card)
3821 if (card->instantiated)
3822 soc_cleanup_card_resources(card);
3823 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
3827 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3830 * Simplify DAI link configuration by removing ".-1" from device names
3831 * and sanitizing names.
3833 static char *fmt_single_name(struct device *dev, int *id)
3835 char *found, name[NAME_SIZE];
3838 if (dev_name(dev) == NULL)
3841 strlcpy(name, dev_name(dev), NAME_SIZE);
3843 /* are we a "%s.%d" name (platform and SPI components) */
3844 found = strstr(name, dev->driver->name);
3847 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3849 /* discard ID from name if ID == -1 */
3851 found[strlen(dev->driver->name)] = '\0';
3855 /* I2C component devices are named "bus-addr" */
3856 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3857 char tmp[NAME_SIZE];
3859 /* create unique ID number from I2C addr and bus */
3860 *id = ((id1 & 0xffff) << 16) + id2;
3862 /* sanitize component name for DAI link creation */
3863 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3864 strlcpy(name, tmp, NAME_SIZE);
3869 return kstrdup(name, GFP_KERNEL);
3873 * Simplify DAI link naming for single devices with multiple DAIs by removing
3874 * any ".-1" and using the DAI name (instead of device name).
3876 static inline char *fmt_multiple_name(struct device *dev,
3877 struct snd_soc_dai_driver *dai_drv)
3879 if (dai_drv->name == NULL) {
3881 "ASoC: error - multiple DAI %s registered with no name\n",
3886 return kstrdup(dai_drv->name, GFP_KERNEL);
3890 * snd_soc_register_dai - Register a DAI with the ASoC core
3892 * @dai: DAI to register
3894 static int snd_soc_register_dai(struct device *dev,
3895 struct snd_soc_dai_driver *dai_drv)
3897 struct snd_soc_codec *codec;
3898 struct snd_soc_dai *dai;
3900 dev_dbg(dev, "ASoC: dai register %s\n", dev_name(dev));
3902 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3906 /* create DAI component name */
3907 dai->name = fmt_single_name(dev, &dai->id);
3908 if (dai->name == NULL) {
3914 dai->driver = dai_drv;
3915 dai->dapm.dev = dev;
3916 if (!dai->driver->ops)
3917 dai->driver->ops = &null_dai_ops;
3919 mutex_lock(&client_mutex);
3921 list_for_each_entry(codec, &codec_list, list) {
3922 if (codec->dev == dev) {
3923 dev_dbg(dev, "ASoC: Mapped DAI %s to CODEC %s\n",
3924 dai->name, codec->name);
3931 dai->dapm.idle_bias_off = 1;
3933 list_add(&dai->list, &dai_list);
3935 mutex_unlock(&client_mutex);
3937 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
3943 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3945 * @dai: DAI to unregister
3947 static void snd_soc_unregister_dai(struct device *dev)
3949 struct snd_soc_dai *dai;
3951 list_for_each_entry(dai, &dai_list, list) {
3952 if (dev == dai->dev)
3958 mutex_lock(&client_mutex);
3959 list_del(&dai->list);
3960 mutex_unlock(&client_mutex);
3962 dev_dbg(dev, "ASoC: Unregistered DAI '%s'\n", dai->name);
3968 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3970 * @dai: Array of DAIs to register
3971 * @count: Number of DAIs
3973 static int snd_soc_register_dais(struct device *dev,
3974 struct snd_soc_dai_driver *dai_drv, size_t count)
3976 struct snd_soc_codec *codec;
3977 struct snd_soc_dai *dai;
3980 dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
3982 for (i = 0; i < count; i++) {
3984 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3990 /* create DAI component name */
3991 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3992 if (dai->name == NULL) {
3999 dai->driver = &dai_drv[i];
4000 if (dai->driver->id)
4001 dai->id = dai->driver->id;
4004 dai->dapm.dev = dev;
4005 if (!dai->driver->ops)
4006 dai->driver->ops = &null_dai_ops;
4008 mutex_lock(&client_mutex);
4010 list_for_each_entry(codec, &codec_list, list) {
4011 if (codec->dev == dev) {
4013 "ASoC: Mapped DAI %s to CODEC %s\n",
4014 dai->name, codec->name);
4021 dai->dapm.idle_bias_off = 1;
4023 list_add(&dai->list, &dai_list);
4025 mutex_unlock(&client_mutex);
4027 dev_dbg(dai->dev, "ASoC: Registered DAI '%s'\n", dai->name);
4033 for (i--; i >= 0; i--)
4034 snd_soc_unregister_dai(dev);
4040 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
4042 * @dai: Array of DAIs to unregister
4043 * @count: Number of DAIs
4045 static void snd_soc_unregister_dais(struct device *dev, size_t count)
4049 for (i = 0; i < count; i++)
4050 snd_soc_unregister_dai(dev);
4054 * snd_soc_add_platform - Add a platform to the ASoC core
4055 * @dev: The parent device for the platform
4056 * @platform: The platform to add
4057 * @platform_driver: The driver for the platform
4059 int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
4060 const struct snd_soc_platform_driver *platform_drv)
4062 /* create platform component name */
4063 platform->name = fmt_single_name(dev, &platform->id);
4064 if (platform->name == NULL)
4067 platform->dev = dev;
4068 platform->driver = platform_drv;
4069 platform->dapm.dev = dev;
4070 platform->dapm.platform = platform;
4071 platform->dapm.stream_event = platform_drv->stream_event;
4072 mutex_init(&platform->mutex);
4074 mutex_lock(&client_mutex);
4075 list_add(&platform->list, &platform_list);
4076 mutex_unlock(&client_mutex);
4078 dev_dbg(dev, "ASoC: Registered platform '%s'\n", platform->name);
4082 EXPORT_SYMBOL_GPL(snd_soc_add_platform);
4085 * snd_soc_register_platform - Register a platform with the ASoC core
4087 * @platform: platform to register
4089 int snd_soc_register_platform(struct device *dev,
4090 const struct snd_soc_platform_driver *platform_drv)
4092 struct snd_soc_platform *platform;
4095 dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
4097 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
4098 if (platform == NULL)
4101 ret = snd_soc_add_platform(dev, platform, platform_drv);
4107 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
4110 * snd_soc_remove_platform - Remove a platform from the ASoC core
4111 * @platform: the platform to remove
4113 void snd_soc_remove_platform(struct snd_soc_platform *platform)
4115 mutex_lock(&client_mutex);
4116 list_del(&platform->list);
4117 mutex_unlock(&client_mutex);
4119 dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
4121 kfree(platform->name);
4123 EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
4125 struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
4127 struct snd_soc_platform *platform;
4129 list_for_each_entry(platform, &platform_list, list) {
4130 if (dev == platform->dev)
4136 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
4139 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
4141 * @platform: platform to unregister
4143 void snd_soc_unregister_platform(struct device *dev)
4145 struct snd_soc_platform *platform;
4147 platform = snd_soc_lookup_platform(dev);
4151 snd_soc_remove_platform(platform);
4154 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
4156 static u64 codec_format_map[] = {
4157 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
4158 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
4159 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
4160 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
4161 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
4162 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
4163 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4164 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4165 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
4166 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
4167 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
4168 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
4169 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
4170 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
4171 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
4172 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
4175 /* Fix up the DAI formats for endianness: codecs don't actually see
4176 * the endianness of the data but we're using the CPU format
4177 * definitions which do need to include endianness so we ensure that
4178 * codec DAIs always have both big and little endian variants set.
4180 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
4184 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
4185 if (stream->formats & codec_format_map[i])
4186 stream->formats |= codec_format_map[i];
4190 * snd_soc_register_codec - Register a codec with the ASoC core
4192 * @codec: codec to register
4194 int snd_soc_register_codec(struct device *dev,
4195 const struct snd_soc_codec_driver *codec_drv,
4196 struct snd_soc_dai_driver *dai_drv,
4200 struct snd_soc_codec *codec;
4203 dev_dbg(dev, "codec register %s\n", dev_name(dev));
4205 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
4209 /* create CODEC component name */
4210 codec->name = fmt_single_name(dev, &codec->id);
4211 if (codec->name == NULL) {
4216 if (codec_drv->compress_type)
4217 codec->compress_type = codec_drv->compress_type;
4219 codec->compress_type = SND_SOC_FLAT_COMPRESSION;
4221 codec->write = codec_drv->write;
4222 codec->read = codec_drv->read;
4223 codec->volatile_register = codec_drv->volatile_register;
4224 codec->readable_register = codec_drv->readable_register;
4225 codec->writable_register = codec_drv->writable_register;
4226 codec->ignore_pmdown_time = codec_drv->ignore_pmdown_time;
4227 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
4228 codec->dapm.dev = dev;
4229 codec->dapm.codec = codec;
4230 codec->dapm.seq_notifier = codec_drv->seq_notifier;
4231 codec->dapm.stream_event = codec_drv->stream_event;
4233 codec->driver = codec_drv;
4234 codec->num_dai = num_dai;
4235 mutex_init(&codec->mutex);
4237 /* allocate CODEC register cache */
4238 if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
4239 reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
4240 codec->reg_size = reg_size;
4241 /* it is necessary to make a copy of the default register cache
4242 * because in the case of using a compression type that requires
4243 * the default register cache to be marked as the
4244 * kernel might have freed the array by the time we initialize
4247 if (codec_drv->reg_cache_default) {
4248 codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
4249 reg_size, GFP_KERNEL);
4250 if (!codec->reg_def_copy) {
4252 goto fail_codec_name;
4257 if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
4258 if (!codec->volatile_register)
4259 codec->volatile_register = snd_soc_default_volatile_register;
4260 if (!codec->readable_register)
4261 codec->readable_register = snd_soc_default_readable_register;
4262 if (!codec->writable_register)
4263 codec->writable_register = snd_soc_default_writable_register;
4266 for (i = 0; i < num_dai; i++) {
4267 fixup_codec_formats(&dai_drv[i].playback);
4268 fixup_codec_formats(&dai_drv[i].capture);
4271 mutex_lock(&client_mutex);
4272 list_add(&codec->list, &codec_list);
4273 mutex_unlock(&client_mutex);
4275 /* register any DAIs */
4276 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
4278 dev_err(codec->dev, "ASoC: Failed to regster DAIs: %d\n", ret);
4279 goto fail_codec_name;
4282 dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n", codec->name);
4286 mutex_lock(&client_mutex);
4287 list_del(&codec->list);
4288 mutex_unlock(&client_mutex);
4295 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
4298 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4300 * @codec: codec to unregister
4302 void snd_soc_unregister_codec(struct device *dev)
4304 struct snd_soc_codec *codec;
4306 list_for_each_entry(codec, &codec_list, list) {
4307 if (dev == codec->dev)
4313 snd_soc_unregister_dais(dev, codec->num_dai);
4315 mutex_lock(&client_mutex);
4316 list_del(&codec->list);
4317 mutex_unlock(&client_mutex);
4319 dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n", codec->name);
4321 snd_soc_cache_exit(codec);
4322 kfree(codec->reg_def_copy);
4326 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
4330 * snd_soc_register_component - Register a component with the ASoC core
4333 int snd_soc_register_component(struct device *dev,
4334 const struct snd_soc_component_driver *cmpnt_drv,
4335 struct snd_soc_dai_driver *dai_drv,
4338 struct snd_soc_component *cmpnt;
4341 dev_dbg(dev, "component register %s\n", dev_name(dev));
4343 cmpnt = devm_kzalloc(dev, sizeof(*cmpnt), GFP_KERNEL);
4345 dev_err(dev, "ASoC: Failed to allocate memory\n");
4349 cmpnt->name = fmt_single_name(dev, &cmpnt->id);
4351 dev_err(dev, "ASoC: Failed to simplifying name\n");
4356 cmpnt->driver = cmpnt_drv;
4357 cmpnt->num_dai = num_dai;
4360 * snd_soc_register_dai() uses fmt_single_name(), and
4361 * snd_soc_register_dais() uses fmt_multiple_name()
4362 * for dai->name which is used for name based matching
4365 ret = snd_soc_register_dai(dev, dai_drv);
4367 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
4369 dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret);
4370 goto error_component_name;
4373 mutex_lock(&client_mutex);
4374 list_add(&cmpnt->list, &component_list);
4375 mutex_unlock(&client_mutex);
4377 dev_dbg(cmpnt->dev, "ASoC: Registered component '%s'\n", cmpnt->name);
4381 error_component_name:
4386 EXPORT_SYMBOL_GPL(snd_soc_register_component);
4389 * snd_soc_unregister_component - Unregister a component from the ASoC core
4392 void snd_soc_unregister_component(struct device *dev)
4394 struct snd_soc_component *cmpnt;
4396 list_for_each_entry(cmpnt, &component_list, list) {
4397 if (dev == cmpnt->dev)
4403 snd_soc_unregister_dais(dev, cmpnt->num_dai);
4405 mutex_lock(&client_mutex);
4406 list_del(&cmpnt->list);
4407 mutex_unlock(&client_mutex);
4409 dev_dbg(dev, "ASoC: Unregistered component '%s'\n", cmpnt->name);
4412 EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
4414 /* Retrieve a card's name from device tree */
4415 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
4416 const char *propname)
4418 struct device_node *np = card->dev->of_node;
4421 ret = of_property_read_string_index(np, propname, 0, &card->name);
4423 * EINVAL means the property does not exist. This is fine providing
4424 * card->name was previously set, which is checked later in
4425 * snd_soc_register_card.
4427 if (ret < 0 && ret != -EINVAL) {
4429 "ASoC: Property '%s' could not be read: %d\n",
4436 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
4438 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
4439 const char *propname)
4441 struct device_node *np = card->dev->of_node;
4443 struct snd_soc_dapm_route *routes;
4446 num_routes = of_property_count_strings(np, propname);
4447 if (num_routes < 0 || num_routes & 1) {
4449 "ASoC: Property '%s' does not exist or its length is not even\n",
4455 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4460 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
4464 "ASoC: Could not allocate DAPM route table\n");
4468 for (i = 0; i < num_routes; i++) {
4469 ret = of_property_read_string_index(np, propname,
4470 2 * i, &routes[i].sink);
4473 "ASoC: Property '%s' index %d could not be read: %d\n",
4474 propname, 2 * i, ret);
4477 ret = of_property_read_string_index(np, propname,
4478 (2 * i) + 1, &routes[i].source);
4481 "ASoC: Property '%s' index %d could not be read: %d\n",
4482 propname, (2 * i) + 1, ret);
4487 card->num_dapm_routes = num_routes;
4488 card->dapm_routes = routes;
4492 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
4494 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
4499 unsigned int format = 0;
4505 } of_fmt_table[] = {
4506 { "i2s", SND_SOC_DAIFMT_I2S },
4507 { "right_j", SND_SOC_DAIFMT_RIGHT_J },
4508 { "left_j", SND_SOC_DAIFMT_LEFT_J },
4509 { "dsp_a", SND_SOC_DAIFMT_DSP_A },
4510 { "dsp_b", SND_SOC_DAIFMT_DSP_B },
4511 { "ac97", SND_SOC_DAIFMT_AC97 },
4512 { "pdm", SND_SOC_DAIFMT_PDM},
4513 { "msb", SND_SOC_DAIFMT_MSB },
4514 { "lsb", SND_SOC_DAIFMT_LSB },
4521 * check "[prefix]format = xxx"
4522 * SND_SOC_DAIFMT_FORMAT_MASK area
4524 snprintf(prop, sizeof(prop), "%sformat", prefix);
4525 ret = of_property_read_string(np, prop, &str);
4527 for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
4528 if (strcmp(str, of_fmt_table[i].name) == 0) {
4529 format |= of_fmt_table[i].val;
4536 * check "[prefix]continuous-clock"
4537 * SND_SOC_DAIFMT_CLOCK_MASK area
4539 snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
4540 if (of_get_property(np, prop, NULL))
4541 format |= SND_SOC_DAIFMT_CONT;
4543 format |= SND_SOC_DAIFMT_GATED;
4546 * check "[prefix]bitclock-inversion"
4547 * check "[prefix]frame-inversion"
4548 * SND_SOC_DAIFMT_INV_MASK area
4550 snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
4551 bit = !!of_get_property(np, prop, NULL);
4553 snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
4554 frame = !!of_get_property(np, prop, NULL);
4556 switch ((bit << 4) + frame) {
4558 format |= SND_SOC_DAIFMT_IB_IF;
4561 format |= SND_SOC_DAIFMT_IB_NF;
4564 format |= SND_SOC_DAIFMT_NB_IF;
4567 /* SND_SOC_DAIFMT_NB_NF is default */
4572 * check "[prefix]bitclock-master"
4573 * check "[prefix]frame-master"
4574 * SND_SOC_DAIFMT_MASTER_MASK area
4576 snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
4577 bit = !!of_get_property(np, prop, NULL);
4579 snprintf(prop, sizeof(prop), "%sframe-master", prefix);
4580 frame = !!of_get_property(np, prop, NULL);
4582 switch ((bit << 4) + frame) {
4584 format |= SND_SOC_DAIFMT_CBM_CFM;
4587 format |= SND_SOC_DAIFMT_CBM_CFS;
4590 format |= SND_SOC_DAIFMT_CBS_CFM;
4593 format |= SND_SOC_DAIFMT_CBS_CFS;
4599 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
4601 static int __init snd_soc_init(void)
4603 #ifdef CONFIG_DEBUG_FS
4604 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
4605 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
4606 pr_warn("ASoC: Failed to create debugfs directory\n");
4607 snd_soc_debugfs_root = NULL;
4610 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
4612 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4614 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
4616 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4618 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
4619 &platform_list_fops))
4620 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4623 snd_soc_util_init();
4625 return platform_driver_register(&soc_driver);
4627 module_init(snd_soc_init);
4629 static void __exit snd_soc_exit(void)
4631 snd_soc_util_exit();
4633 #ifdef CONFIG_DEBUG_FS
4634 debugfs_remove_recursive(snd_soc_debugfs_root);
4636 platform_driver_unregister(&soc_driver);
4638 module_exit(snd_soc_exit);
4640 /* Module information */
4641 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4642 MODULE_DESCRIPTION("ALSA SoC Core");
4643 MODULE_LICENSE("GPL");
4644 MODULE_ALIAS("platform:soc-audio");