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/ctype.h>
34 #include <linux/slab.h>
36 #include <sound/ac97_codec.h>
37 #include <sound/core.h>
38 #include <sound/jack.h>
39 #include <sound/pcm.h>
40 #include <sound/pcm_params.h>
41 #include <sound/soc.h>
42 #include <sound/soc-dpcm.h>
43 #include <sound/initval.h>
45 #define CREATE_TRACE_POINTS
46 #include <trace/events/asoc.h>
50 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
52 #ifdef CONFIG_DEBUG_FS
53 struct dentry *snd_soc_debugfs_root;
54 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
57 static DEFINE_MUTEX(client_mutex);
58 static LIST_HEAD(dai_list);
59 static LIST_HEAD(platform_list);
60 static LIST_HEAD(codec_list);
63 * This is a timeout to do a DAPM powerdown after a stream is closed().
64 * It can be used to eliminate pops between different playback streams, e.g.
65 * between two audio tracks.
67 static int pmdown_time = 5000;
68 module_param(pmdown_time, int, 0);
69 MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
71 /* returns the minimum number of bytes needed to represent
72 * a particular given value */
73 static int min_bytes_needed(unsigned long val)
78 for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
81 c = (sizeof val * 8) - c;
89 /* fill buf which is 'len' bytes with a formatted
90 * string of the form 'reg: value\n' */
91 static int format_register_str(struct snd_soc_codec *codec,
92 unsigned int reg, char *buf, size_t len)
94 int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
95 int regsize = codec->driver->reg_word_size * 2;
98 char regbuf[regsize + 1];
100 /* since tmpbuf is allocated on the stack, warn the callers if they
101 * try to abuse this function */
104 /* +2 for ': ' and + 1 for '\n' */
105 if (wordsize + regsize + 2 + 1 != len)
108 ret = snd_soc_read(codec, reg);
110 memset(regbuf, 'X', regsize);
111 regbuf[regsize] = '\0';
113 snprintf(regbuf, regsize + 1, "%.*x", regsize, ret);
116 /* prepare the buffer */
117 snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf);
118 /* copy it back to the caller without the '\0' */
119 memcpy(buf, tmpbuf, len);
124 /* codec register dump */
125 static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
126 size_t count, loff_t pos)
129 int wordsize, regsize;
134 wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
135 regsize = codec->driver->reg_word_size * 2;
137 len = wordsize + regsize + 2 + 1;
139 if (!codec->driver->reg_cache_size)
142 if (codec->driver->reg_cache_step)
143 step = codec->driver->reg_cache_step;
145 for (i = 0; i < codec->driver->reg_cache_size; i += step) {
146 if (!snd_soc_codec_readable_register(codec, i))
148 if (codec->driver->display_register) {
149 count += codec->driver->display_register(codec, buf + count,
150 PAGE_SIZE - count, i);
152 /* only support larger than PAGE_SIZE bytes debugfs
153 * entries for the default case */
155 if (total + len >= count - 1)
157 format_register_str(codec, i, buf + total, len);
164 total = min(total, count - 1);
169 static ssize_t codec_reg_show(struct device *dev,
170 struct device_attribute *attr, char *buf)
172 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
174 return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
177 static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
179 static ssize_t pmdown_time_show(struct device *dev,
180 struct device_attribute *attr, char *buf)
182 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
184 return sprintf(buf, "%ld\n", rtd->pmdown_time);
187 static ssize_t pmdown_time_set(struct device *dev,
188 struct device_attribute *attr,
189 const char *buf, size_t count)
191 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
194 ret = strict_strtol(buf, 10, &rtd->pmdown_time);
201 static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
203 #ifdef CONFIG_DEBUG_FS
204 static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
205 size_t count, loff_t *ppos)
208 struct snd_soc_codec *codec = file->private_data;
211 if (*ppos < 0 || !count)
214 buf = kmalloc(count, GFP_KERNEL);
218 ret = soc_codec_reg_show(codec, buf, count, *ppos);
220 if (copy_to_user(user_buf, buf, ret)) {
231 static ssize_t codec_reg_write_file(struct file *file,
232 const char __user *user_buf, size_t count, loff_t *ppos)
237 unsigned long reg, value;
238 struct snd_soc_codec *codec = file->private_data;
240 buf_size = min(count, (sizeof(buf)-1));
241 if (copy_from_user(buf, user_buf, buf_size))
245 while (*start == ' ')
247 reg = simple_strtoul(start, &start, 16);
248 while (*start == ' ')
250 if (strict_strtoul(start, 16, &value))
253 /* Userspace has been fiddling around behind the kernel's back */
254 add_taint(TAINT_USER);
256 snd_soc_write(codec, reg, value);
260 static const struct file_operations codec_reg_fops = {
262 .read = codec_reg_read_file,
263 .write = codec_reg_write_file,
264 .llseek = default_llseek,
267 static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
269 struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
271 codec->debugfs_codec_root = debugfs_create_dir(codec->name,
273 if (!codec->debugfs_codec_root) {
274 dev_warn(codec->dev, "ASoC: Failed to create codec debugfs"
279 debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
281 debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
284 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
285 codec->debugfs_codec_root,
286 codec, &codec_reg_fops);
287 if (!codec->debugfs_reg)
288 dev_warn(codec->dev, "ASoC: Failed to create codec register"
291 snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root);
294 static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
296 debugfs_remove_recursive(codec->debugfs_codec_root);
299 static void soc_init_platform_debugfs(struct snd_soc_platform *platform)
301 struct dentry *debugfs_card_root = platform->card->debugfs_card_root;
303 platform->debugfs_platform_root = debugfs_create_dir(platform->name,
305 if (!platform->debugfs_platform_root) {
306 dev_warn(platform->dev,
307 "ASoC: Failed to create platform debugfs directory\n");
311 snd_soc_dapm_debugfs_init(&platform->dapm,
312 platform->debugfs_platform_root);
315 static void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
317 debugfs_remove_recursive(platform->debugfs_platform_root);
320 static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
321 size_t count, loff_t *ppos)
323 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
324 ssize_t len, ret = 0;
325 struct snd_soc_codec *codec;
330 list_for_each_entry(codec, &codec_list, list) {
331 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
335 if (ret > PAGE_SIZE) {
342 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
349 static const struct file_operations codec_list_fops = {
350 .read = codec_list_read_file,
351 .llseek = default_llseek,/* read accesses f_pos */
354 static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
355 size_t count, loff_t *ppos)
357 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
358 ssize_t len, ret = 0;
359 struct snd_soc_dai *dai;
364 list_for_each_entry(dai, &dai_list, list) {
365 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", dai->name);
368 if (ret > PAGE_SIZE) {
374 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
381 static const struct file_operations dai_list_fops = {
382 .read = dai_list_read_file,
383 .llseek = default_llseek,/* read accesses f_pos */
386 static ssize_t platform_list_read_file(struct file *file,
387 char __user *user_buf,
388 size_t count, loff_t *ppos)
390 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
391 ssize_t len, ret = 0;
392 struct snd_soc_platform *platform;
397 list_for_each_entry(platform, &platform_list, list) {
398 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
402 if (ret > PAGE_SIZE) {
408 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
415 static const struct file_operations platform_list_fops = {
416 .read = platform_list_read_file,
417 .llseek = default_llseek,/* read accesses f_pos */
420 static void soc_init_card_debugfs(struct snd_soc_card *card)
422 card->debugfs_card_root = debugfs_create_dir(card->name,
423 snd_soc_debugfs_root);
424 if (!card->debugfs_card_root) {
426 "ASoC: Failed to create card debugfs directory\n");
430 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
431 card->debugfs_card_root,
433 if (!card->debugfs_pop_time)
435 "ASoC: Failed to create pop time debugfs file\n");
438 static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
440 debugfs_remove_recursive(card->debugfs_card_root);
445 static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
449 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
453 static inline void soc_init_platform_debugfs(struct snd_soc_platform *platform)
457 static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
461 static inline void soc_init_card_debugfs(struct snd_soc_card *card)
465 static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
470 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
471 const char *dai_link, int stream)
475 for (i = 0; i < card->num_links; i++) {
476 if (card->rtd[i].dai_link->no_pcm &&
477 !strcmp(card->rtd[i].dai_link->name, dai_link))
478 return card->rtd[i].pcm->streams[stream].substream;
480 dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link);
483 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);
485 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
486 const char *dai_link)
490 for (i = 0; i < card->num_links; i++) {
491 if (!strcmp(card->rtd[i].dai_link->name, dai_link))
492 return &card->rtd[i];
494 dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link);
497 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
499 #ifdef CONFIG_SND_SOC_AC97_BUS
500 /* unregister ac97 codec */
501 static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
503 if (codec->ac97->dev.bus)
504 device_unregister(&codec->ac97->dev);
508 /* stop no dev release warning */
509 static void soc_ac97_device_release(struct device *dev){}
511 /* register ac97 codec to bus */
512 static int soc_ac97_dev_register(struct snd_soc_codec *codec)
516 codec->ac97->dev.bus = &ac97_bus_type;
517 codec->ac97->dev.parent = codec->card->dev;
518 codec->ac97->dev.release = soc_ac97_device_release;
520 dev_set_name(&codec->ac97->dev, "%d-%d:%s",
521 codec->card->snd_card->number, 0, codec->name);
522 err = device_register(&codec->ac97->dev);
524 dev_err(codec->dev, "ASoC: Can't register ac97 bus\n");
525 codec->ac97->dev.bus = NULL;
532 #ifdef CONFIG_PM_SLEEP
533 /* powers down audio subsystem for suspend */
534 int snd_soc_suspend(struct device *dev)
536 struct snd_soc_card *card = dev_get_drvdata(dev);
537 struct snd_soc_codec *codec;
540 /* If the initialization of this soc device failed, there is no codec
541 * associated with it. Just bail out in this case.
543 if (list_empty(&card->codec_dev_list))
546 /* Due to the resume being scheduled into a workqueue we could
547 * suspend before that's finished - wait for it to complete.
549 snd_power_lock(card->snd_card);
550 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
551 snd_power_unlock(card->snd_card);
553 /* we're going to block userspace touching us until resume completes */
554 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
556 /* mute any active DACs */
557 for (i = 0; i < card->num_rtd; i++) {
558 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
559 struct snd_soc_dai_driver *drv = dai->driver;
561 if (card->rtd[i].dai_link->ignore_suspend)
564 if (drv->ops->digital_mute && dai->playback_active)
565 drv->ops->digital_mute(dai, 1);
568 /* suspend all pcms */
569 for (i = 0; i < card->num_rtd; i++) {
570 if (card->rtd[i].dai_link->ignore_suspend)
573 snd_pcm_suspend_all(card->rtd[i].pcm);
576 if (card->suspend_pre)
577 card->suspend_pre(card);
579 for (i = 0; i < card->num_rtd; i++) {
580 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
581 struct snd_soc_platform *platform = card->rtd[i].platform;
583 if (card->rtd[i].dai_link->ignore_suspend)
586 if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
587 cpu_dai->driver->suspend(cpu_dai);
588 if (platform->driver->suspend && !platform->suspended) {
589 platform->driver->suspend(cpu_dai);
590 platform->suspended = 1;
594 /* close any waiting streams and save state */
595 for (i = 0; i < card->num_rtd; i++) {
596 flush_delayed_work(&card->rtd[i].delayed_work);
597 card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
600 for (i = 0; i < card->num_rtd; i++) {
602 if (card->rtd[i].dai_link->ignore_suspend)
605 snd_soc_dapm_stream_event(&card->rtd[i],
606 SNDRV_PCM_STREAM_PLAYBACK,
607 SND_SOC_DAPM_STREAM_SUSPEND);
609 snd_soc_dapm_stream_event(&card->rtd[i],
610 SNDRV_PCM_STREAM_CAPTURE,
611 SND_SOC_DAPM_STREAM_SUSPEND);
614 /* Recheck all analogue paths too */
615 dapm_mark_io_dirty(&card->dapm);
616 snd_soc_dapm_sync(&card->dapm);
618 /* suspend all CODECs */
619 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
620 /* If there are paths active then the CODEC will be held with
621 * bias _ON and should not be suspended. */
622 if (!codec->suspended && codec->driver->suspend) {
623 switch (codec->dapm.bias_level) {
624 case SND_SOC_BIAS_STANDBY:
626 * If the CODEC is capable of idle
627 * bias off then being in STANDBY
628 * means it's doing something,
629 * otherwise fall through.
631 if (codec->dapm.idle_bias_off) {
633 "ASoC: idle_bias_off CODEC on"
637 case SND_SOC_BIAS_OFF:
638 codec->driver->suspend(codec);
639 codec->suspended = 1;
640 codec->cache_sync = 1;
641 if (codec->using_regmap)
642 regcache_mark_dirty(codec->control_data);
645 dev_dbg(codec->dev, "ASoC: CODEC is on"
652 for (i = 0; i < card->num_rtd; i++) {
653 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
655 if (card->rtd[i].dai_link->ignore_suspend)
658 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
659 cpu_dai->driver->suspend(cpu_dai);
662 if (card->suspend_post)
663 card->suspend_post(card);
667 EXPORT_SYMBOL_GPL(snd_soc_suspend);
669 /* deferred resume work, so resume can complete before we finished
670 * setting our codec back up, which can be very slow on I2C
672 static void soc_resume_deferred(struct work_struct *work)
674 struct snd_soc_card *card =
675 container_of(work, struct snd_soc_card, deferred_resume_work);
676 struct snd_soc_codec *codec;
679 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
680 * so userspace apps are blocked from touching us
683 dev_dbg(card->dev, "ASoC: starting resume work\n");
685 /* Bring us up into D2 so that DAPM starts enabling things */
686 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
688 if (card->resume_pre)
689 card->resume_pre(card);
691 /* resume AC97 DAIs */
692 for (i = 0; i < card->num_rtd; i++) {
693 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
695 if (card->rtd[i].dai_link->ignore_suspend)
698 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
699 cpu_dai->driver->resume(cpu_dai);
702 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
703 /* If the CODEC was idle over suspend then it will have been
704 * left with bias OFF or STANDBY and suspended so we must now
705 * resume. Otherwise the suspend was suppressed.
707 if (codec->driver->resume && codec->suspended) {
708 switch (codec->dapm.bias_level) {
709 case SND_SOC_BIAS_STANDBY:
710 case SND_SOC_BIAS_OFF:
711 codec->driver->resume(codec);
712 codec->suspended = 0;
715 dev_dbg(codec->dev, "ASoC: CODEC was on over"
722 for (i = 0; i < card->num_rtd; i++) {
724 if (card->rtd[i].dai_link->ignore_suspend)
727 snd_soc_dapm_stream_event(&card->rtd[i],
728 SNDRV_PCM_STREAM_PLAYBACK,
729 SND_SOC_DAPM_STREAM_RESUME);
731 snd_soc_dapm_stream_event(&card->rtd[i],
732 SNDRV_PCM_STREAM_CAPTURE,
733 SND_SOC_DAPM_STREAM_RESUME);
736 /* unmute any active DACs */
737 for (i = 0; i < card->num_rtd; i++) {
738 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
739 struct snd_soc_dai_driver *drv = dai->driver;
741 if (card->rtd[i].dai_link->ignore_suspend)
744 if (drv->ops->digital_mute && dai->playback_active)
745 drv->ops->digital_mute(dai, 0);
748 for (i = 0; i < card->num_rtd; i++) {
749 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
750 struct snd_soc_platform *platform = card->rtd[i].platform;
752 if (card->rtd[i].dai_link->ignore_suspend)
755 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
756 cpu_dai->driver->resume(cpu_dai);
757 if (platform->driver->resume && platform->suspended) {
758 platform->driver->resume(cpu_dai);
759 platform->suspended = 0;
763 if (card->resume_post)
764 card->resume_post(card);
766 dev_dbg(card->dev, "ASoC: resume work completed\n");
768 /* userspace can access us now we are back as we were before */
769 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
771 /* Recheck all analogue paths too */
772 dapm_mark_io_dirty(&card->dapm);
773 snd_soc_dapm_sync(&card->dapm);
776 /* powers up audio subsystem after a suspend */
777 int snd_soc_resume(struct device *dev)
779 struct snd_soc_card *card = dev_get_drvdata(dev);
780 int i, ac97_control = 0;
782 /* If the initialization of this soc device failed, there is no codec
783 * associated with it. Just bail out in this case.
785 if (list_empty(&card->codec_dev_list))
788 /* AC97 devices might have other drivers hanging off them so
789 * need to resume immediately. Other drivers don't have that
790 * problem and may take a substantial amount of time to resume
791 * due to I/O costs and anti-pop so handle them out of line.
793 for (i = 0; i < card->num_rtd; i++) {
794 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
795 ac97_control |= cpu_dai->driver->ac97_control;
798 dev_dbg(dev, "ASoC: Resuming AC97 immediately\n");
799 soc_resume_deferred(&card->deferred_resume_work);
801 dev_dbg(dev, "ASoC: Scheduling resume work\n");
802 if (!schedule_work(&card->deferred_resume_work))
803 dev_err(dev, "ASoC: resume work item may be lost\n");
808 EXPORT_SYMBOL_GPL(snd_soc_resume);
810 #define snd_soc_suspend NULL
811 #define snd_soc_resume NULL
814 static const struct snd_soc_dai_ops null_dai_ops = {
817 static int soc_bind_dai_link(struct snd_soc_card *card, int num)
819 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
820 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
821 struct snd_soc_codec *codec;
822 struct snd_soc_platform *platform;
823 struct snd_soc_dai *codec_dai, *cpu_dai;
824 const char *platform_name;
826 dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num);
828 /* Find CPU DAI from registered DAIs*/
829 list_for_each_entry(cpu_dai, &dai_list, list) {
830 if (dai_link->cpu_of_node &&
831 (cpu_dai->dev->of_node != dai_link->cpu_of_node))
833 if (dai_link->cpu_name &&
834 strcmp(dev_name(cpu_dai->dev), dai_link->cpu_name))
836 if (dai_link->cpu_dai_name &&
837 strcmp(cpu_dai->name, dai_link->cpu_dai_name))
840 rtd->cpu_dai = cpu_dai;
844 dev_err(card->dev, "ASoC: CPU DAI %s not registered\n",
845 dai_link->cpu_dai_name);
846 return -EPROBE_DEFER;
849 /* Find CODEC from registered CODECs */
850 list_for_each_entry(codec, &codec_list, list) {
851 if (dai_link->codec_of_node) {
852 if (codec->dev->of_node != dai_link->codec_of_node)
855 if (strcmp(codec->name, dai_link->codec_name))
862 * CODEC found, so find CODEC DAI from registered DAIs from
865 list_for_each_entry(codec_dai, &dai_list, list) {
866 if (codec->dev == codec_dai->dev &&
867 !strcmp(codec_dai->name,
868 dai_link->codec_dai_name)) {
870 rtd->codec_dai = codec_dai;
874 if (!rtd->codec_dai) {
875 dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
876 dai_link->codec_dai_name);
877 return -EPROBE_DEFER;
882 dev_err(card->dev, "ASoC: CODEC %s not registered\n",
883 dai_link->codec_name);
884 return -EPROBE_DEFER;
887 /* if there's no platform we match on the empty platform */
888 platform_name = dai_link->platform_name;
889 if (!platform_name && !dai_link->platform_of_node)
890 platform_name = "snd-soc-dummy";
892 /* find one from the set of registered platforms */
893 list_for_each_entry(platform, &platform_list, list) {
894 if (dai_link->platform_of_node) {
895 if (platform->dev->of_node !=
896 dai_link->platform_of_node)
899 if (strcmp(platform->name, platform_name))
903 rtd->platform = platform;
905 if (!rtd->platform) {
906 dev_err(card->dev, "ASoC: platform %s not registered\n",
907 dai_link->platform_name);
908 return -EPROBE_DEFER;
916 static int soc_remove_platform(struct snd_soc_platform *platform)
920 if (platform->driver->remove) {
921 ret = platform->driver->remove(platform);
923 dev_err(platform->dev, "ASoC: failed to remove %d\n",
927 /* Make sure all DAPM widgets are freed */
928 snd_soc_dapm_free(&platform->dapm);
930 soc_cleanup_platform_debugfs(platform);
931 platform->probed = 0;
932 list_del(&platform->card_list);
933 module_put(platform->dev->driver->owner);
938 static void soc_remove_codec(struct snd_soc_codec *codec)
942 if (codec->driver->remove) {
943 err = codec->driver->remove(codec);
945 dev_err(codec->dev, "ASoC: failed to remove %d\n", err);
948 /* Make sure all DAPM widgets are freed */
949 snd_soc_dapm_free(&codec->dapm);
951 soc_cleanup_codec_debugfs(codec);
953 list_del(&codec->card_list);
954 module_put(codec->dev->driver->owner);
957 static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order)
959 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
960 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
963 /* unregister the rtd device */
964 if (rtd->dev_registered) {
965 device_remove_file(rtd->dev, &dev_attr_pmdown_time);
966 device_remove_file(rtd->dev, &dev_attr_codec_reg);
967 device_unregister(rtd->dev);
968 rtd->dev_registered = 0;
971 /* remove the CODEC DAI */
972 if (codec_dai && codec_dai->probed &&
973 codec_dai->driver->remove_order == order) {
974 if (codec_dai->driver->remove) {
975 err = codec_dai->driver->remove(codec_dai);
977 dev_err(codec_dai->dev,
978 "ASoC: failed to remove %s: %d\n",
979 codec_dai->name, err);
981 codec_dai->probed = 0;
982 list_del(&codec_dai->card_list);
985 /* remove the cpu_dai */
986 if (cpu_dai && cpu_dai->probed &&
987 cpu_dai->driver->remove_order == order) {
988 if (cpu_dai->driver->remove) {
989 err = cpu_dai->driver->remove(cpu_dai);
991 dev_err(cpu_dai->dev,
992 "ASoC: failed to remove %s: %d\n",
996 list_del(&cpu_dai->card_list);
998 if (!cpu_dai->codec) {
999 snd_soc_dapm_free(&cpu_dai->dapm);
1000 module_put(cpu_dai->dev->driver->owner);
1005 static void soc_remove_link_components(struct snd_soc_card *card, int num,
1008 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1009 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1010 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1011 struct snd_soc_platform *platform = rtd->platform;
1012 struct snd_soc_codec *codec;
1014 /* remove the platform */
1015 if (platform && platform->probed &&
1016 platform->driver->remove_order == order) {
1017 soc_remove_platform(platform);
1020 /* remove the CODEC-side CODEC */
1022 codec = codec_dai->codec;
1023 if (codec && codec->probed &&
1024 codec->driver->remove_order == order)
1025 soc_remove_codec(codec);
1028 /* remove any CPU-side CODEC */
1030 codec = cpu_dai->codec;
1031 if (codec && codec->probed &&
1032 codec->driver->remove_order == order)
1033 soc_remove_codec(codec);
1037 static void soc_remove_dai_links(struct snd_soc_card *card)
1041 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1043 for (dai = 0; dai < card->num_rtd; dai++)
1044 soc_remove_link_dais(card, dai, order);
1047 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1049 for (dai = 0; dai < card->num_rtd; dai++)
1050 soc_remove_link_components(card, dai, order);
1056 static void soc_set_name_prefix(struct snd_soc_card *card,
1057 struct snd_soc_codec *codec)
1061 if (card->codec_conf == NULL)
1064 for (i = 0; i < card->num_configs; i++) {
1065 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1066 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
1067 codec->name_prefix = map->name_prefix;
1073 static int soc_probe_codec(struct snd_soc_card *card,
1074 struct snd_soc_codec *codec)
1077 const struct snd_soc_codec_driver *driver = codec->driver;
1078 struct snd_soc_dai *dai;
1081 codec->dapm.card = card;
1082 soc_set_name_prefix(card, codec);
1084 if (!try_module_get(codec->dev->driver->owner))
1087 soc_init_codec_debugfs(codec);
1089 if (driver->dapm_widgets)
1090 snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
1091 driver->num_dapm_widgets);
1093 /* Create DAPM widgets for each DAI stream */
1094 list_for_each_entry(dai, &dai_list, list) {
1095 if (dai->dev != codec->dev)
1098 snd_soc_dapm_new_dai_widgets(&codec->dapm, dai);
1101 codec->dapm.idle_bias_off = driver->idle_bias_off;
1103 if (driver->probe) {
1104 ret = driver->probe(codec);
1107 "ASoC: failed to probe CODEC %d\n", ret);
1110 WARN(codec->dapm.idle_bias_off &&
1111 codec->dapm.bias_level != SND_SOC_BIAS_OFF,
1112 "codec %s can not start from non-off bias"
1113 " with idle_bias_off==1\n", codec->name);
1116 /* If the driver didn't set I/O up try regmap */
1117 if (!codec->write && dev_get_regmap(codec->dev, NULL))
1118 snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP);
1120 if (driver->controls)
1121 snd_soc_add_codec_controls(codec, driver->controls,
1122 driver->num_controls);
1123 if (driver->dapm_routes)
1124 snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
1125 driver->num_dapm_routes);
1127 /* mark codec as probed and add to card codec list */
1129 list_add(&codec->card_list, &card->codec_dev_list);
1130 list_add(&codec->dapm.list, &card->dapm_list);
1135 soc_cleanup_codec_debugfs(codec);
1136 module_put(codec->dev->driver->owner);
1141 static int soc_probe_platform(struct snd_soc_card *card,
1142 struct snd_soc_platform *platform)
1145 const struct snd_soc_platform_driver *driver = platform->driver;
1146 struct snd_soc_dai *dai;
1148 platform->card = card;
1149 platform->dapm.card = card;
1151 if (!try_module_get(platform->dev->driver->owner))
1154 soc_init_platform_debugfs(platform);
1156 if (driver->dapm_widgets)
1157 snd_soc_dapm_new_controls(&platform->dapm,
1158 driver->dapm_widgets, driver->num_dapm_widgets);
1160 /* Create DAPM widgets for each DAI stream */
1161 list_for_each_entry(dai, &dai_list, list) {
1162 if (dai->dev != platform->dev)
1165 snd_soc_dapm_new_dai_widgets(&platform->dapm, dai);
1168 platform->dapm.idle_bias_off = 1;
1170 if (driver->probe) {
1171 ret = driver->probe(platform);
1173 dev_err(platform->dev,
1174 "ASoC: failed to probe platform %d\n", ret);
1179 if (driver->controls)
1180 snd_soc_add_platform_controls(platform, driver->controls,
1181 driver->num_controls);
1182 if (driver->dapm_routes)
1183 snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
1184 driver->num_dapm_routes);
1186 /* mark platform as probed and add to card platform list */
1187 platform->probed = 1;
1188 list_add(&platform->card_list, &card->platform_dev_list);
1189 list_add(&platform->dapm.list, &card->dapm_list);
1194 soc_cleanup_platform_debugfs(platform);
1195 module_put(platform->dev->driver->owner);
1200 static void rtd_release(struct device *dev)
1205 static int soc_post_component_init(struct snd_soc_card *card,
1206 struct snd_soc_codec *codec,
1207 int num, int dailess)
1209 struct snd_soc_dai_link *dai_link = NULL;
1210 struct snd_soc_aux_dev *aux_dev = NULL;
1211 struct snd_soc_pcm_runtime *rtd;
1212 const char *temp, *name;
1216 dai_link = &card->dai_link[num];
1217 rtd = &card->rtd[num];
1218 name = dai_link->name;
1220 aux_dev = &card->aux_dev[num];
1221 rtd = &card->rtd_aux[num];
1222 name = aux_dev->name;
1226 /* Make sure all DAPM widgets are instantiated */
1227 snd_soc_dapm_new_widgets(&codec->dapm);
1229 /* machine controls, routes and widgets are not prefixed */
1230 temp = codec->name_prefix;
1231 codec->name_prefix = NULL;
1233 /* do machine specific initialization */
1234 if (!dailess && dai_link->init)
1235 ret = dai_link->init(rtd);
1236 else if (dailess && aux_dev->init)
1237 ret = aux_dev->init(&codec->dapm);
1239 dev_err(card->dev, "ASoC: failed to init %s: %d\n", name, ret);
1242 codec->name_prefix = temp;
1244 /* register the rtd device */
1247 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1250 device_initialize(rtd->dev);
1251 rtd->dev->parent = card->dev;
1252 rtd->dev->release = rtd_release;
1253 rtd->dev->init_name = name;
1254 dev_set_drvdata(rtd->dev, rtd);
1255 mutex_init(&rtd->pcm_mutex);
1256 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1257 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1258 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1259 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1260 ret = device_add(rtd->dev);
1263 "ASoC: failed to register runtime device: %d\n", ret);
1266 rtd->dev_registered = 1;
1268 /* add DAPM sysfs entries for this codec */
1269 ret = snd_soc_dapm_sys_add(rtd->dev);
1272 "ASoC: failed to add codec dapm sysfs entries: %d\n", ret);
1274 /* add codec sysfs entries */
1275 ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
1278 "ASoC: failed to add codec sysfs files: %d\n", ret);
1280 #ifdef CONFIG_DEBUG_FS
1281 /* add DPCM sysfs entries */
1282 if (!dailess && !dai_link->dynamic)
1285 ret = soc_dpcm_debugfs_add(rtd);
1287 dev_err(rtd->dev, "ASoC: failed to add dpcm sysfs entries: %d\n", ret);
1294 static int soc_probe_link_components(struct snd_soc_card *card, int num,
1297 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1298 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1299 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1300 struct snd_soc_platform *platform = rtd->platform;
1303 /* probe the CPU-side component, if it is a CODEC */
1304 if (cpu_dai->codec &&
1305 !cpu_dai->codec->probed &&
1306 cpu_dai->codec->driver->probe_order == order) {
1307 ret = soc_probe_codec(card, cpu_dai->codec);
1312 /* probe the CODEC-side component */
1313 if (!codec_dai->codec->probed &&
1314 codec_dai->codec->driver->probe_order == order) {
1315 ret = soc_probe_codec(card, codec_dai->codec);
1320 /* probe the platform */
1321 if (!platform->probed &&
1322 platform->driver->probe_order == order) {
1323 ret = soc_probe_platform(card, platform);
1331 static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
1333 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1334 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1335 struct snd_soc_codec *codec = rtd->codec;
1336 struct snd_soc_platform *platform = rtd->platform;
1337 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1338 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1339 struct snd_soc_dapm_widget *play_w, *capture_w;
1342 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1343 card->name, num, order);
1345 /* config components */
1346 cpu_dai->platform = platform;
1347 codec_dai->card = card;
1348 cpu_dai->card = card;
1350 /* set default power off timeout */
1351 rtd->pmdown_time = pmdown_time;
1353 /* probe the cpu_dai */
1354 if (!cpu_dai->probed &&
1355 cpu_dai->driver->probe_order == order) {
1356 if (!cpu_dai->codec) {
1357 cpu_dai->dapm.card = card;
1358 if (!try_module_get(cpu_dai->dev->driver->owner))
1361 list_add(&cpu_dai->dapm.list, &card->dapm_list);
1362 snd_soc_dapm_new_dai_widgets(&cpu_dai->dapm, cpu_dai);
1365 if (cpu_dai->driver->probe) {
1366 ret = cpu_dai->driver->probe(cpu_dai);
1368 dev_err(cpu_dai->dev,
1369 "ASoC: failed to probe CPU DAI %s: %d\n",
1370 cpu_dai->name, ret);
1371 module_put(cpu_dai->dev->driver->owner);
1375 cpu_dai->probed = 1;
1376 /* mark cpu_dai as probed and add to card dai list */
1377 list_add(&cpu_dai->card_list, &card->dai_dev_list);
1380 /* probe the CODEC DAI */
1381 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
1382 if (codec_dai->driver->probe) {
1383 ret = codec_dai->driver->probe(codec_dai);
1385 dev_err(codec_dai->dev,
1386 "ASoC: failed to probe CODEC DAI %s: %d\n",
1387 codec_dai->name, ret);
1392 /* mark codec_dai as probed and add to card dai list */
1393 codec_dai->probed = 1;
1394 list_add(&codec_dai->card_list, &card->dai_dev_list);
1397 /* complete DAI probe during last probe */
1398 if (order != SND_SOC_COMP_ORDER_LAST)
1401 ret = soc_post_component_init(card, codec, num, 0);
1405 ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
1407 dev_warn(rtd->dev, "ASoC: failed to add pmdown_time sysfs: %d\n",
1410 if (cpu_dai->driver->compress_dai) {
1411 /*create compress_device"*/
1412 ret = soc_new_compress(rtd, num);
1414 dev_err(card->dev, "ASoC: can't create compress %s\n",
1415 dai_link->stream_name);
1420 if (!dai_link->params) {
1421 /* create the pcm */
1422 ret = soc_new_pcm(rtd, num);
1424 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1425 dai_link->stream_name, ret);
1429 /* link the DAI widgets */
1430 play_w = codec_dai->playback_widget;
1431 capture_w = cpu_dai->capture_widget;
1432 if (play_w && capture_w) {
1433 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1436 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1437 play_w->name, capture_w->name, ret);
1442 play_w = cpu_dai->playback_widget;
1443 capture_w = codec_dai->capture_widget;
1444 if (play_w && capture_w) {
1445 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1448 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1449 play_w->name, capture_w->name, ret);
1456 /* add platform data for AC97 devices */
1457 if (rtd->codec_dai->driver->ac97_control)
1458 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1463 #ifdef CONFIG_SND_SOC_AC97_BUS
1464 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1468 /* Only instantiate AC97 if not already done by the adaptor
1469 * for the generic AC97 subsystem.
1471 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
1473 * It is possible that the AC97 device is already registered to
1474 * the device subsystem. This happens when the device is created
1475 * via snd_ac97_mixer(). Currently only SoC codec that does so
1476 * is the generic AC97 glue but others migh emerge.
1478 * In those cases we don't try to register the device again.
1480 if (!rtd->codec->ac97_created)
1483 ret = soc_ac97_dev_register(rtd->codec);
1485 dev_err(rtd->codec->dev,
1486 "ASoC: AC97 device register failed: %d\n", ret);
1490 rtd->codec->ac97_registered = 1;
1495 static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1497 if (codec->ac97_registered) {
1498 soc_ac97_dev_unregister(codec);
1499 codec->ac97_registered = 0;
1504 static int soc_check_aux_dev(struct snd_soc_card *card, int num)
1506 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1507 struct snd_soc_codec *codec;
1509 /* find CODEC from registered CODECs*/
1510 list_for_each_entry(codec, &codec_list, list) {
1511 if (!strcmp(codec->name, aux_dev->codec_name))
1515 dev_err(card->dev, "ASoC: %s not registered\n", aux_dev->codec_name);
1517 return -EPROBE_DEFER;
1520 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1522 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1523 struct snd_soc_codec *codec;
1526 /* find CODEC from registered CODECs*/
1527 list_for_each_entry(codec, &codec_list, list) {
1528 if (!strcmp(codec->name, aux_dev->codec_name)) {
1529 if (codec->probed) {
1531 "ASoC: codec already probed");
1538 /* codec not found */
1539 dev_err(card->dev, "ASoC: codec %s not found", aux_dev->codec_name);
1540 return -EPROBE_DEFER;
1543 ret = soc_probe_codec(card, codec);
1547 ret = soc_post_component_init(card, codec, num, 1);
1553 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1555 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1556 struct snd_soc_codec *codec = rtd->codec;
1558 /* unregister the rtd device */
1559 if (rtd->dev_registered) {
1560 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1561 device_del(rtd->dev);
1562 rtd->dev_registered = 0;
1565 if (codec && codec->probed)
1566 soc_remove_codec(codec);
1569 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
1570 enum snd_soc_compress_type compress_type)
1574 if (codec->cache_init)
1577 /* override the compress_type if necessary */
1578 if (compress_type && codec->compress_type != compress_type)
1579 codec->compress_type = compress_type;
1580 ret = snd_soc_cache_init(codec);
1582 dev_err(codec->dev, "ASoC: Failed to set cache compression"
1583 " type: %d\n", ret);
1586 codec->cache_init = 1;
1590 static int snd_soc_instantiate_card(struct snd_soc_card *card)
1592 struct snd_soc_codec *codec;
1593 struct snd_soc_codec_conf *codec_conf;
1594 enum snd_soc_compress_type compress_type;
1595 struct snd_soc_dai_link *dai_link;
1596 int ret, i, order, dai_fmt;
1598 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1601 for (i = 0; i < card->num_links; i++) {
1602 ret = soc_bind_dai_link(card, i);
1607 /* check aux_devs too */
1608 for (i = 0; i < card->num_aux_devs; i++) {
1609 ret = soc_check_aux_dev(card, i);
1614 /* initialize the register cache for each available codec */
1615 list_for_each_entry(codec, &codec_list, list) {
1616 if (codec->cache_init)
1618 /* by default we don't override the compress_type */
1620 /* check to see if we need to override the compress_type */
1621 for (i = 0; i < card->num_configs; ++i) {
1622 codec_conf = &card->codec_conf[i];
1623 if (!strcmp(codec->name, codec_conf->dev_name)) {
1624 compress_type = codec_conf->compress_type;
1625 if (compress_type && compress_type
1626 != codec->compress_type)
1630 ret = snd_soc_init_codec_cache(codec, compress_type);
1635 /* card bind complete so register a sound card */
1636 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1637 card->owner, 0, &card->snd_card);
1639 dev_err(card->dev, "ASoC: can't create sound card for"
1640 " card %s: %d\n", card->name, ret);
1643 card->snd_card->dev = card->dev;
1645 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1646 card->dapm.dev = card->dev;
1647 card->dapm.card = card;
1648 list_add(&card->dapm.list, &card->dapm_list);
1650 #ifdef CONFIG_DEBUG_FS
1651 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1654 #ifdef CONFIG_PM_SLEEP
1655 /* deferred resume work */
1656 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1659 if (card->dapm_widgets)
1660 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1661 card->num_dapm_widgets);
1663 /* initialise the sound card only once */
1665 ret = card->probe(card);
1667 goto card_probe_error;
1670 /* probe all components used by DAI links on this card */
1671 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1673 for (i = 0; i < card->num_links; i++) {
1674 ret = soc_probe_link_components(card, i, order);
1677 "ASoC: failed to instantiate card %d\n",
1684 /* probe all DAI links on this card */
1685 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1687 for (i = 0; i < card->num_links; i++) {
1688 ret = soc_probe_link_dais(card, i, order);
1691 "ASoC: failed to instantiate card %d\n",
1698 for (i = 0; i < card->num_aux_devs; i++) {
1699 ret = soc_probe_aux_dev(card, i);
1702 "ASoC: failed to add auxiliary devices %d\n",
1704 goto probe_aux_dev_err;
1708 snd_soc_dapm_link_dai_widgets(card);
1711 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1713 if (card->dapm_routes)
1714 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1715 card->num_dapm_routes);
1717 snd_soc_dapm_new_widgets(&card->dapm);
1719 for (i = 0; i < card->num_links; i++) {
1720 dai_link = &card->dai_link[i];
1721 dai_fmt = dai_link->dai_fmt;
1724 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1726 if (ret != 0 && ret != -ENOTSUPP)
1727 dev_warn(card->rtd[i].codec_dai->dev,
1728 "ASoC: Failed to set DAI format: %d\n",
1732 /* If this is a regular CPU link there will be a platform */
1734 (dai_link->platform_name || dai_link->platform_of_node)) {
1735 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1737 if (ret != 0 && ret != -ENOTSUPP)
1738 dev_warn(card->rtd[i].cpu_dai->dev,
1739 "ASoC: Failed to set DAI format: %d\n",
1741 } else if (dai_fmt) {
1742 /* Flip the polarity for the "CPU" end */
1743 dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
1744 switch (dai_link->dai_fmt &
1745 SND_SOC_DAIFMT_MASTER_MASK) {
1746 case SND_SOC_DAIFMT_CBM_CFM:
1747 dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1749 case SND_SOC_DAIFMT_CBM_CFS:
1750 dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1752 case SND_SOC_DAIFMT_CBS_CFM:
1753 dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1755 case SND_SOC_DAIFMT_CBS_CFS:
1756 dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1760 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1762 if (ret != 0 && ret != -ENOTSUPP)
1763 dev_warn(card->rtd[i].cpu_dai->dev,
1764 "ASoC: Failed to set DAI format: %d\n",
1769 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1771 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1772 "%s", card->long_name ? card->long_name : card->name);
1773 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1774 "%s", card->driver_name ? card->driver_name : card->name);
1775 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1776 switch (card->snd_card->driver[i]) {
1782 if (!isalnum(card->snd_card->driver[i]))
1783 card->snd_card->driver[i] = '_';
1788 if (card->late_probe) {
1789 ret = card->late_probe(card);
1791 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
1793 goto probe_aux_dev_err;
1797 snd_soc_dapm_new_widgets(&card->dapm);
1799 if (card->fully_routed)
1800 list_for_each_entry(codec, &card->codec_dev_list, card_list)
1801 snd_soc_dapm_auto_nc_codec_pins(codec);
1803 ret = snd_card_register(card->snd_card);
1805 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
1807 goto probe_aux_dev_err;
1810 #ifdef CONFIG_SND_SOC_AC97_BUS
1811 /* register any AC97 codecs */
1812 for (i = 0; i < card->num_rtd; i++) {
1813 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1815 dev_err(card->dev, "ASoC: failed to register AC97:"
1818 soc_unregister_ac97_dai_link(card->rtd[i].codec);
1819 goto probe_aux_dev_err;
1824 card->instantiated = 1;
1825 snd_soc_dapm_sync(&card->dapm);
1826 mutex_unlock(&card->mutex);
1831 for (i = 0; i < card->num_aux_devs; i++)
1832 soc_remove_aux_dev(card, i);
1835 soc_remove_dai_links(card);
1841 snd_card_free(card->snd_card);
1844 mutex_unlock(&card->mutex);
1849 /* probes a new socdev */
1850 static int soc_probe(struct platform_device *pdev)
1852 struct snd_soc_card *card = platform_get_drvdata(pdev);
1855 * no card, so machine driver should be registering card
1856 * we should not be here in that case so ret error
1861 dev_warn(&pdev->dev,
1862 "ASoC: machine %s should use snd_soc_register_card()\n",
1865 /* Bodge while we unpick instantiation */
1866 card->dev = &pdev->dev;
1868 return snd_soc_register_card(card);
1871 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1875 /* make sure any delayed work runs */
1876 for (i = 0; i < card->num_rtd; i++) {
1877 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1878 flush_delayed_work(&rtd->delayed_work);
1881 /* remove auxiliary devices */
1882 for (i = 0; i < card->num_aux_devs; i++)
1883 soc_remove_aux_dev(card, i);
1885 /* remove and free each DAI */
1886 soc_remove_dai_links(card);
1888 soc_cleanup_card_debugfs(card);
1890 /* remove the card */
1894 snd_soc_dapm_free(&card->dapm);
1896 snd_card_free(card->snd_card);
1901 /* removes a socdev */
1902 static int soc_remove(struct platform_device *pdev)
1904 struct snd_soc_card *card = platform_get_drvdata(pdev);
1906 snd_soc_unregister_card(card);
1910 int snd_soc_poweroff(struct device *dev)
1912 struct snd_soc_card *card = dev_get_drvdata(dev);
1915 if (!card->instantiated)
1918 /* Flush out pmdown_time work - we actually do want to run it
1919 * now, we're shutting down so no imminent restart. */
1920 for (i = 0; i < card->num_rtd; i++) {
1921 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1922 flush_delayed_work(&rtd->delayed_work);
1925 snd_soc_dapm_shutdown(card);
1929 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
1931 const struct dev_pm_ops snd_soc_pm_ops = {
1932 .suspend = snd_soc_suspend,
1933 .resume = snd_soc_resume,
1934 .freeze = snd_soc_suspend,
1935 .thaw = snd_soc_resume,
1936 .poweroff = snd_soc_poweroff,
1937 .restore = snd_soc_resume,
1939 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
1941 /* ASoC platform driver */
1942 static struct platform_driver soc_driver = {
1944 .name = "soc-audio",
1945 .owner = THIS_MODULE,
1946 .pm = &snd_soc_pm_ops,
1949 .remove = soc_remove,
1953 * snd_soc_codec_volatile_register: Report if a register is volatile.
1955 * @codec: CODEC to query.
1956 * @reg: Register to query.
1958 * Boolean function indiciating if a CODEC register is volatile.
1960 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
1963 if (codec->volatile_register)
1964 return codec->volatile_register(codec, reg);
1968 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
1971 * snd_soc_codec_readable_register: Report if a register is readable.
1973 * @codec: CODEC to query.
1974 * @reg: Register to query.
1976 * Boolean function indicating if a CODEC register is readable.
1978 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
1981 if (codec->readable_register)
1982 return codec->readable_register(codec, reg);
1986 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
1989 * snd_soc_codec_writable_register: Report if a register is writable.
1991 * @codec: CODEC to query.
1992 * @reg: Register to query.
1994 * Boolean function indicating if a CODEC register is writable.
1996 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
1999 if (codec->writable_register)
2000 return codec->writable_register(codec, reg);
2004 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
2006 int snd_soc_platform_read(struct snd_soc_platform *platform,
2011 if (!platform->driver->read) {
2012 dev_err(platform->dev, "ASoC: platform has no read back\n");
2016 ret = platform->driver->read(platform, reg);
2017 dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
2018 trace_snd_soc_preg_read(platform, reg, ret);
2022 EXPORT_SYMBOL_GPL(snd_soc_platform_read);
2024 int snd_soc_platform_write(struct snd_soc_platform *platform,
2025 unsigned int reg, unsigned int val)
2027 if (!platform->driver->write) {
2028 dev_err(platform->dev, "ASoC: platform has no write back\n");
2032 dev_dbg(platform->dev, "write %x = %x\n", reg, val);
2033 trace_snd_soc_preg_write(platform, reg, val);
2034 return platform->driver->write(platform, reg, val);
2036 EXPORT_SYMBOL_GPL(snd_soc_platform_write);
2039 * snd_soc_new_ac97_codec - initailise AC97 device
2040 * @codec: audio codec
2041 * @ops: AC97 bus operations
2042 * @num: AC97 codec number
2044 * Initialises AC97 codec resources for use by ad-hoc devices only.
2046 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
2047 struct snd_ac97_bus_ops *ops, int num)
2049 mutex_lock(&codec->mutex);
2051 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2052 if (codec->ac97 == NULL) {
2053 mutex_unlock(&codec->mutex);
2057 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
2058 if (codec->ac97->bus == NULL) {
2061 mutex_unlock(&codec->mutex);
2065 codec->ac97->bus->ops = ops;
2066 codec->ac97->num = num;
2069 * Mark the AC97 device to be created by us. This way we ensure that the
2070 * device will be registered with the device subsystem later on.
2072 codec->ac97_created = 1;
2074 mutex_unlock(&codec->mutex);
2077 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
2080 * snd_soc_free_ac97_codec - free AC97 codec device
2081 * @codec: audio codec
2083 * Frees AC97 codec device resources.
2085 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
2087 mutex_lock(&codec->mutex);
2088 #ifdef CONFIG_SND_SOC_AC97_BUS
2089 soc_unregister_ac97_dai_link(codec);
2091 kfree(codec->ac97->bus);
2094 codec->ac97_created = 0;
2095 mutex_unlock(&codec->mutex);
2097 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
2099 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
2103 ret = codec->read(codec, reg);
2104 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
2105 trace_snd_soc_reg_read(codec, reg, ret);
2109 EXPORT_SYMBOL_GPL(snd_soc_read);
2111 unsigned int snd_soc_write(struct snd_soc_codec *codec,
2112 unsigned int reg, unsigned int val)
2114 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
2115 trace_snd_soc_reg_write(codec, reg, val);
2116 return codec->write(codec, reg, val);
2118 EXPORT_SYMBOL_GPL(snd_soc_write);
2120 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
2121 unsigned int reg, const void *data, size_t len)
2123 return codec->bulk_write_raw(codec, reg, data, len);
2125 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw);
2128 * snd_soc_update_bits - update codec register bits
2129 * @codec: audio codec
2130 * @reg: codec register
2131 * @mask: register mask
2134 * Writes new register value.
2136 * Returns 1 for change, 0 for no change, or negative error code.
2138 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
2139 unsigned int mask, unsigned int value)
2142 unsigned int old, new;
2145 if (codec->using_regmap) {
2146 ret = regmap_update_bits_check(codec->control_data, reg,
2147 mask, value, &change);
2149 ret = snd_soc_read(codec, reg);
2154 new = (old & ~mask) | (value & mask);
2155 change = old != new;
2157 ret = snd_soc_write(codec, reg, new);
2165 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
2168 * snd_soc_update_bits_locked - update codec register bits
2169 * @codec: audio codec
2170 * @reg: codec register
2171 * @mask: register mask
2174 * Writes new register value, and takes the codec mutex.
2176 * Returns 1 for change else 0.
2178 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
2179 unsigned short reg, unsigned int mask,
2184 mutex_lock(&codec->mutex);
2185 change = snd_soc_update_bits(codec, reg, mask, value);
2186 mutex_unlock(&codec->mutex);
2190 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
2193 * snd_soc_test_bits - test register for change
2194 * @codec: audio codec
2195 * @reg: codec register
2196 * @mask: register mask
2199 * Tests a register with a new value and checks if the new value is
2200 * different from the old value.
2202 * Returns 1 for change else 0.
2204 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
2205 unsigned int mask, unsigned int value)
2208 unsigned int old, new;
2210 old = snd_soc_read(codec, reg);
2211 new = (old & ~mask) | value;
2212 change = old != new;
2216 EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2219 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2220 * @substream: the pcm substream
2221 * @hw: the hardware parameters
2223 * Sets the substream runtime hardware parameters.
2225 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
2226 const struct snd_pcm_hardware *hw)
2228 struct snd_pcm_runtime *runtime = substream->runtime;
2229 runtime->hw.info = hw->info;
2230 runtime->hw.formats = hw->formats;
2231 runtime->hw.period_bytes_min = hw->period_bytes_min;
2232 runtime->hw.period_bytes_max = hw->period_bytes_max;
2233 runtime->hw.periods_min = hw->periods_min;
2234 runtime->hw.periods_max = hw->periods_max;
2235 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
2236 runtime->hw.fifo_size = hw->fifo_size;
2239 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
2242 * snd_soc_cnew - create new control
2243 * @_template: control template
2244 * @data: control private data
2245 * @long_name: control long name
2246 * @prefix: control name prefix
2248 * Create a new mixer control from a template control.
2250 * Returns 0 for success, else error.
2252 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2253 void *data, const char *long_name,
2256 struct snd_kcontrol_new template;
2257 struct snd_kcontrol *kcontrol;
2261 memcpy(&template, _template, sizeof(template));
2265 long_name = template.name;
2268 name_len = strlen(long_name) + strlen(prefix) + 2;
2269 name = kmalloc(name_len, GFP_KERNEL);
2273 snprintf(name, name_len, "%s %s", prefix, long_name);
2275 template.name = name;
2277 template.name = long_name;
2280 kcontrol = snd_ctl_new1(&template, data);
2286 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2288 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2289 const struct snd_kcontrol_new *controls, int num_controls,
2290 const char *prefix, void *data)
2294 for (i = 0; i < num_controls; i++) {
2295 const struct snd_kcontrol_new *control = &controls[i];
2296 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2297 control->name, prefix));
2299 dev_err(dev, "ASoC: Failed to add %s: %d\n",
2300 control->name, err);
2309 * snd_soc_add_codec_controls - add an array of controls to a codec.
2310 * Convenience function to add a list of controls. Many codecs were
2311 * duplicating this code.
2313 * @codec: codec to add controls to
2314 * @controls: array of controls to add
2315 * @num_controls: number of elements in the array
2317 * Return 0 for success, else error.
2319 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2320 const struct snd_kcontrol_new *controls, int num_controls)
2322 struct snd_card *card = codec->card->snd_card;
2324 return snd_soc_add_controls(card, codec->dev, controls, num_controls,
2325 codec->name_prefix, codec);
2327 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2330 * snd_soc_add_platform_controls - add an array of controls to a platform.
2331 * Convenience function to add a list of controls.
2333 * @platform: platform to add controls to
2334 * @controls: array of controls to add
2335 * @num_controls: number of elements in the array
2337 * Return 0 for success, else error.
2339 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2340 const struct snd_kcontrol_new *controls, int num_controls)
2342 struct snd_card *card = platform->card->snd_card;
2344 return snd_soc_add_controls(card, platform->dev, controls, num_controls,
2347 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2350 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2351 * Convenience function to add a list of controls.
2353 * @soc_card: SoC card to add controls to
2354 * @controls: array of controls to add
2355 * @num_controls: number of elements in the array
2357 * Return 0 for success, else error.
2359 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2360 const struct snd_kcontrol_new *controls, int num_controls)
2362 struct snd_card *card = soc_card->snd_card;
2364 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2367 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2370 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2371 * Convienience function to add a list of controls.
2373 * @dai: DAI to add controls to
2374 * @controls: array of controls to add
2375 * @num_controls: number of elements in the array
2377 * Return 0 for success, else error.
2379 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2380 const struct snd_kcontrol_new *controls, int num_controls)
2382 struct snd_card *card = dai->card->snd_card;
2384 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2387 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2390 * snd_soc_info_enum_double - enumerated double mixer info callback
2391 * @kcontrol: mixer control
2392 * @uinfo: control element information
2394 * Callback to provide information about a double enumerated
2397 * Returns 0 for success.
2399 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2400 struct snd_ctl_elem_info *uinfo)
2402 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2404 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2405 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2406 uinfo->value.enumerated.items = e->max;
2408 if (uinfo->value.enumerated.item > e->max - 1)
2409 uinfo->value.enumerated.item = e->max - 1;
2410 strcpy(uinfo->value.enumerated.name,
2411 e->texts[uinfo->value.enumerated.item]);
2414 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2417 * snd_soc_get_enum_double - enumerated double mixer get callback
2418 * @kcontrol: mixer control
2419 * @ucontrol: control element information
2421 * Callback to get the value of a double enumerated mixer.
2423 * Returns 0 for success.
2425 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2426 struct snd_ctl_elem_value *ucontrol)
2428 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2429 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2432 val = snd_soc_read(codec, e->reg);
2433 ucontrol->value.enumerated.item[0]
2434 = (val >> e->shift_l) & e->mask;
2435 if (e->shift_l != e->shift_r)
2436 ucontrol->value.enumerated.item[1] =
2437 (val >> e->shift_r) & e->mask;
2441 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2444 * snd_soc_put_enum_double - enumerated double mixer put callback
2445 * @kcontrol: mixer control
2446 * @ucontrol: control element information
2448 * Callback to set the value of a double enumerated mixer.
2450 * Returns 0 for success.
2452 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2453 struct snd_ctl_elem_value *ucontrol)
2455 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2456 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2460 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2462 val = ucontrol->value.enumerated.item[0] << e->shift_l;
2463 mask = e->mask << e->shift_l;
2464 if (e->shift_l != e->shift_r) {
2465 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2467 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2468 mask |= e->mask << e->shift_r;
2471 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2473 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2476 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2477 * @kcontrol: mixer control
2478 * @ucontrol: control element information
2480 * Callback to get the value of a double semi enumerated mixer.
2482 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2483 * used for handling bitfield coded enumeration for example.
2485 * Returns 0 for success.
2487 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
2488 struct snd_ctl_elem_value *ucontrol)
2490 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2491 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2492 unsigned int reg_val, val, mux;
2494 reg_val = snd_soc_read(codec, e->reg);
2495 val = (reg_val >> e->shift_l) & e->mask;
2496 for (mux = 0; mux < e->max; mux++) {
2497 if (val == e->values[mux])
2500 ucontrol->value.enumerated.item[0] = mux;
2501 if (e->shift_l != e->shift_r) {
2502 val = (reg_val >> e->shift_r) & e->mask;
2503 for (mux = 0; mux < e->max; mux++) {
2504 if (val == e->values[mux])
2507 ucontrol->value.enumerated.item[1] = mux;
2512 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
2515 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2516 * @kcontrol: mixer control
2517 * @ucontrol: control element information
2519 * Callback to set the value of a double semi enumerated mixer.
2521 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2522 * used for handling bitfield coded enumeration for example.
2524 * Returns 0 for success.
2526 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
2527 struct snd_ctl_elem_value *ucontrol)
2529 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2530 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2534 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2536 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2537 mask = e->mask << e->shift_l;
2538 if (e->shift_l != e->shift_r) {
2539 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2541 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2542 mask |= e->mask << e->shift_r;
2545 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2547 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
2550 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2551 * @kcontrol: mixer control
2552 * @uinfo: control element information
2554 * Callback to provide information about an external enumerated
2557 * Returns 0 for success.
2559 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
2560 struct snd_ctl_elem_info *uinfo)
2562 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2564 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2566 uinfo->value.enumerated.items = e->max;
2568 if (uinfo->value.enumerated.item > e->max - 1)
2569 uinfo->value.enumerated.item = e->max - 1;
2570 strcpy(uinfo->value.enumerated.name,
2571 e->texts[uinfo->value.enumerated.item]);
2574 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);
2577 * snd_soc_info_volsw_ext - external single mixer info callback
2578 * @kcontrol: mixer control
2579 * @uinfo: control element information
2581 * Callback to provide information about a single external mixer control.
2583 * Returns 0 for success.
2585 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
2586 struct snd_ctl_elem_info *uinfo)
2588 int max = kcontrol->private_value;
2590 if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
2591 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2593 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2596 uinfo->value.integer.min = 0;
2597 uinfo->value.integer.max = max;
2600 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);
2603 * snd_soc_info_volsw - single mixer info callback
2604 * @kcontrol: mixer control
2605 * @uinfo: control element information
2607 * Callback to provide information about a single mixer control, or a double
2608 * mixer control that spans 2 registers.
2610 * Returns 0 for success.
2612 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2613 struct snd_ctl_elem_info *uinfo)
2615 struct soc_mixer_control *mc =
2616 (struct soc_mixer_control *)kcontrol->private_value;
2619 if (!mc->platform_max)
2620 mc->platform_max = mc->max;
2621 platform_max = mc->platform_max;
2623 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2624 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2626 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2628 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2629 uinfo->value.integer.min = 0;
2630 uinfo->value.integer.max = platform_max;
2633 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2636 * snd_soc_get_volsw - single mixer get callback
2637 * @kcontrol: mixer control
2638 * @ucontrol: control element information
2640 * Callback to get the value of a single mixer control, or a double mixer
2641 * control that spans 2 registers.
2643 * Returns 0 for success.
2645 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2646 struct snd_ctl_elem_value *ucontrol)
2648 struct soc_mixer_control *mc =
2649 (struct soc_mixer_control *)kcontrol->private_value;
2650 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2651 unsigned int reg = mc->reg;
2652 unsigned int reg2 = mc->rreg;
2653 unsigned int shift = mc->shift;
2654 unsigned int rshift = mc->rshift;
2656 unsigned int mask = (1 << fls(max)) - 1;
2657 unsigned int invert = mc->invert;
2659 ucontrol->value.integer.value[0] =
2660 (snd_soc_read(codec, reg) >> shift) & mask;
2662 ucontrol->value.integer.value[0] =
2663 max - ucontrol->value.integer.value[0];
2665 if (snd_soc_volsw_is_stereo(mc)) {
2667 ucontrol->value.integer.value[1] =
2668 (snd_soc_read(codec, reg) >> rshift) & mask;
2670 ucontrol->value.integer.value[1] =
2671 (snd_soc_read(codec, reg2) >> shift) & mask;
2673 ucontrol->value.integer.value[1] =
2674 max - ucontrol->value.integer.value[1];
2679 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2682 * snd_soc_put_volsw - single mixer put callback
2683 * @kcontrol: mixer control
2684 * @ucontrol: control element information
2686 * Callback to set the value of a single mixer control, or a double mixer
2687 * control that spans 2 registers.
2689 * Returns 0 for success.
2691 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2692 struct snd_ctl_elem_value *ucontrol)
2694 struct soc_mixer_control *mc =
2695 (struct soc_mixer_control *)kcontrol->private_value;
2696 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2697 unsigned int reg = mc->reg;
2698 unsigned int reg2 = mc->rreg;
2699 unsigned int shift = mc->shift;
2700 unsigned int rshift = mc->rshift;
2702 unsigned int mask = (1 << fls(max)) - 1;
2703 unsigned int invert = mc->invert;
2706 unsigned int val2 = 0;
2707 unsigned int val, val_mask;
2709 val = (ucontrol->value.integer.value[0] & mask);
2712 val_mask = mask << shift;
2714 if (snd_soc_volsw_is_stereo(mc)) {
2715 val2 = (ucontrol->value.integer.value[1] & mask);
2719 val_mask |= mask << rshift;
2720 val |= val2 << rshift;
2722 val2 = val2 << shift;
2726 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2731 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2735 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2738 * snd_soc_get_volsw_sx - single mixer get callback
2739 * @kcontrol: mixer control
2740 * @ucontrol: control element information
2742 * Callback to get the value of a single mixer control, or a double mixer
2743 * control that spans 2 registers.
2745 * Returns 0 for success.
2747 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
2748 struct snd_ctl_elem_value *ucontrol)
2750 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2751 struct soc_mixer_control *mc =
2752 (struct soc_mixer_control *)kcontrol->private_value;
2754 unsigned int reg = mc->reg;
2755 unsigned int reg2 = mc->rreg;
2756 unsigned int shift = mc->shift;
2757 unsigned int rshift = mc->rshift;
2760 int mask = (1 << (fls(min + max) - 1)) - 1;
2762 ucontrol->value.integer.value[0] =
2763 ((snd_soc_read(codec, reg) >> shift) - min) & mask;
2765 if (snd_soc_volsw_is_stereo(mc))
2766 ucontrol->value.integer.value[1] =
2767 ((snd_soc_read(codec, reg2) >> rshift) - min) & mask;
2771 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
2774 * snd_soc_put_volsw_sx - double mixer set callback
2775 * @kcontrol: mixer control
2776 * @uinfo: control element information
2778 * Callback to set the value of a double mixer control that spans 2 registers.
2780 * Returns 0 for success.
2782 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
2783 struct snd_ctl_elem_value *ucontrol)
2785 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2786 struct soc_mixer_control *mc =
2787 (struct soc_mixer_control *)kcontrol->private_value;
2789 unsigned int reg = mc->reg;
2790 unsigned int reg2 = mc->rreg;
2791 unsigned int shift = mc->shift;
2792 unsigned int rshift = mc->rshift;
2795 int mask = (1 << (fls(min + max) - 1)) - 1;
2797 unsigned short val, val_mask, val2 = 0;
2799 val_mask = mask << shift;
2800 val = (ucontrol->value.integer.value[0] + min) & mask;
2803 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2807 if (snd_soc_volsw_is_stereo(mc)) {
2808 val_mask = mask << rshift;
2809 val2 = (ucontrol->value.integer.value[1] + min) & mask;
2810 val2 = val2 << rshift;
2812 if (snd_soc_update_bits_locked(codec, reg2, val_mask, val2))
2817 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
2820 * snd_soc_info_volsw_s8 - signed mixer info callback
2821 * @kcontrol: mixer control
2822 * @uinfo: control element information
2824 * Callback to provide information about a signed mixer control.
2826 * Returns 0 for success.
2828 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2829 struct snd_ctl_elem_info *uinfo)
2831 struct soc_mixer_control *mc =
2832 (struct soc_mixer_control *)kcontrol->private_value;
2836 if (!mc->platform_max)
2837 mc->platform_max = mc->max;
2838 platform_max = mc->platform_max;
2840 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2842 uinfo->value.integer.min = 0;
2843 uinfo->value.integer.max = platform_max - min;
2846 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2849 * snd_soc_get_volsw_s8 - signed mixer get callback
2850 * @kcontrol: mixer control
2851 * @ucontrol: control element information
2853 * Callback to get the value of a signed mixer control.
2855 * Returns 0 for success.
2857 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2858 struct snd_ctl_elem_value *ucontrol)
2860 struct soc_mixer_control *mc =
2861 (struct soc_mixer_control *)kcontrol->private_value;
2862 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2863 unsigned int reg = mc->reg;
2865 int val = snd_soc_read(codec, reg);
2867 ucontrol->value.integer.value[0] =
2868 ((signed char)(val & 0xff))-min;
2869 ucontrol->value.integer.value[1] =
2870 ((signed char)((val >> 8) & 0xff))-min;
2873 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2876 * snd_soc_put_volsw_sgn - signed mixer put callback
2877 * @kcontrol: mixer control
2878 * @ucontrol: control element information
2880 * Callback to set the value of a signed mixer control.
2882 * Returns 0 for success.
2884 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2885 struct snd_ctl_elem_value *ucontrol)
2887 struct soc_mixer_control *mc =
2888 (struct soc_mixer_control *)kcontrol->private_value;
2889 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2890 unsigned int reg = mc->reg;
2894 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2895 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2897 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
2899 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2902 * snd_soc_info_volsw_range - single mixer info callback with range.
2903 * @kcontrol: mixer control
2904 * @uinfo: control element information
2906 * Callback to provide information, within a range, about a single
2909 * returns 0 for success.
2911 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
2912 struct snd_ctl_elem_info *uinfo)
2914 struct soc_mixer_control *mc =
2915 (struct soc_mixer_control *)kcontrol->private_value;
2919 if (!mc->platform_max)
2920 mc->platform_max = mc->max;
2921 platform_max = mc->platform_max;
2923 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2925 uinfo->value.integer.min = 0;
2926 uinfo->value.integer.max = platform_max - min;
2930 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
2933 * snd_soc_put_volsw_range - single mixer put value callback with range.
2934 * @kcontrol: mixer control
2935 * @ucontrol: control element information
2937 * Callback to set the value, within a range, for a single mixer control.
2939 * Returns 0 for success.
2941 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
2942 struct snd_ctl_elem_value *ucontrol)
2944 struct soc_mixer_control *mc =
2945 (struct soc_mixer_control *)kcontrol->private_value;
2946 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2947 unsigned int reg = mc->reg;
2948 unsigned int shift = mc->shift;
2951 unsigned int mask = (1 << fls(max)) - 1;
2952 unsigned int invert = mc->invert;
2953 unsigned int val, val_mask;
2955 val = ((ucontrol->value.integer.value[0] + min) & mask);
2958 val_mask = mask << shift;
2961 return snd_soc_update_bits_locked(codec, reg, val_mask, val);
2963 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
2966 * snd_soc_get_volsw_range - single mixer get callback with range
2967 * @kcontrol: mixer control
2968 * @ucontrol: control element information
2970 * Callback to get the value, within a range, of a single mixer control.
2972 * Returns 0 for success.
2974 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
2975 struct snd_ctl_elem_value *ucontrol)
2977 struct soc_mixer_control *mc =
2978 (struct soc_mixer_control *)kcontrol->private_value;
2979 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2980 unsigned int reg = mc->reg;
2981 unsigned int shift = mc->shift;
2984 unsigned int mask = (1 << fls(max)) - 1;
2985 unsigned int invert = mc->invert;
2987 ucontrol->value.integer.value[0] =
2988 (snd_soc_read(codec, reg) >> shift) & mask;
2990 ucontrol->value.integer.value[0] =
2991 max - ucontrol->value.integer.value[0];
2992 ucontrol->value.integer.value[0] =
2993 ucontrol->value.integer.value[0] - min;
2997 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
3000 * snd_soc_limit_volume - Set new limit to an existing volume control.
3002 * @codec: where to look for the control
3003 * @name: Name of the control
3004 * @max: new maximum limit
3006 * Return 0 for success, else error.
3008 int snd_soc_limit_volume(struct snd_soc_codec *codec,
3009 const char *name, int max)
3011 struct snd_card *card = codec->card->snd_card;
3012 struct snd_kcontrol *kctl;
3013 struct soc_mixer_control *mc;
3017 /* Sanity check for name and max */
3018 if (unlikely(!name || max <= 0))
3021 list_for_each_entry(kctl, &card->controls, list) {
3022 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
3028 mc = (struct soc_mixer_control *)kctl->private_value;
3029 if (max <= mc->max) {
3030 mc->platform_max = max;
3036 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
3038 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
3039 struct snd_ctl_elem_info *uinfo)
3041 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3042 struct soc_bytes *params = (void *)kcontrol->private_value;
3044 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
3045 uinfo->count = params->num_regs * codec->val_bytes;
3049 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
3051 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
3052 struct snd_ctl_elem_value *ucontrol)
3054 struct soc_bytes *params = (void *)kcontrol->private_value;
3055 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3058 if (codec->using_regmap)
3059 ret = regmap_raw_read(codec->control_data, params->base,
3060 ucontrol->value.bytes.data,
3061 params->num_regs * codec->val_bytes);
3065 /* Hide any masked bytes to ensure consistent data reporting */
3066 if (ret == 0 && params->mask) {
3067 switch (codec->val_bytes) {
3069 ucontrol->value.bytes.data[0] &= ~params->mask;
3072 ((u16 *)(&ucontrol->value.bytes.data))[0]
3076 ((u32 *)(&ucontrol->value.bytes.data))[0]
3086 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
3088 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
3089 struct snd_ctl_elem_value *ucontrol)
3091 struct soc_bytes *params = (void *)kcontrol->private_value;
3092 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3097 if (!codec->using_regmap)
3100 len = params->num_regs * codec->val_bytes;
3102 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
3107 * If we've got a mask then we need to preserve the register
3108 * bits. We shouldn't modify the incoming data so take a
3112 ret = regmap_read(codec->control_data, params->base, &val);
3116 val &= params->mask;
3118 switch (codec->val_bytes) {
3120 ((u8 *)data)[0] &= ~params->mask;
3121 ((u8 *)data)[0] |= val;
3124 ((u16 *)data)[0] &= cpu_to_be16(~params->mask);
3125 ((u16 *)data)[0] |= cpu_to_be16(val);
3128 ((u32 *)data)[0] &= cpu_to_be32(~params->mask);
3129 ((u32 *)data)[0] |= cpu_to_be32(val);
3136 ret = regmap_raw_write(codec->control_data, params->base,
3143 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
3146 * snd_soc_info_xr_sx - signed multi register info callback
3147 * @kcontrol: mreg control
3148 * @uinfo: control element information
3150 * Callback to provide information of a control that can
3151 * span multiple codec registers which together
3152 * forms a single signed value in a MSB/LSB manner.
3154 * Returns 0 for success.
3156 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
3157 struct snd_ctl_elem_info *uinfo)
3159 struct soc_mreg_control *mc =
3160 (struct soc_mreg_control *)kcontrol->private_value;
3161 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3163 uinfo->value.integer.min = mc->min;
3164 uinfo->value.integer.max = mc->max;
3168 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
3171 * snd_soc_get_xr_sx - signed multi register get callback
3172 * @kcontrol: mreg control
3173 * @ucontrol: control element information
3175 * Callback to get the value of a control that can span
3176 * multiple codec registers which together forms a single
3177 * signed value in a MSB/LSB manner. The control supports
3178 * specifying total no of bits used to allow for bitfields
3179 * across the multiple codec registers.
3181 * Returns 0 for success.
3183 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
3184 struct snd_ctl_elem_value *ucontrol)
3186 struct soc_mreg_control *mc =
3187 (struct soc_mreg_control *)kcontrol->private_value;
3188 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3189 unsigned int regbase = mc->regbase;
3190 unsigned int regcount = mc->regcount;
3191 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3192 unsigned int regwmask = (1<<regwshift)-1;
3193 unsigned int invert = mc->invert;
3194 unsigned long mask = (1UL<<mc->nbits)-1;
3198 unsigned long regval;
3201 for (i = 0; i < regcount; i++) {
3202 regval = snd_soc_read(codec, regbase+i) & regwmask;
3203 val |= regval << (regwshift*(regcount-i-1));
3206 if (min < 0 && val > max)
3210 ucontrol->value.integer.value[0] = val;
3214 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
3217 * snd_soc_put_xr_sx - signed multi register get callback
3218 * @kcontrol: mreg control
3219 * @ucontrol: control element information
3221 * Callback to set the value of a control that can span
3222 * multiple codec registers which together forms a single
3223 * signed value in a MSB/LSB manner. The control supports
3224 * specifying total no of bits used to allow for bitfields
3225 * across the multiple codec registers.
3227 * Returns 0 for success.
3229 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
3230 struct snd_ctl_elem_value *ucontrol)
3232 struct soc_mreg_control *mc =
3233 (struct soc_mreg_control *)kcontrol->private_value;
3234 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3235 unsigned int regbase = mc->regbase;
3236 unsigned int regcount = mc->regcount;
3237 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3238 unsigned int regwmask = (1<<regwshift)-1;
3239 unsigned int invert = mc->invert;
3240 unsigned long mask = (1UL<<mc->nbits)-1;
3242 long val = ucontrol->value.integer.value[0];
3243 unsigned int i, regval, regmask;
3249 for (i = 0; i < regcount; i++) {
3250 regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
3251 regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
3252 err = snd_soc_update_bits_locked(codec, regbase+i,
3260 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
3263 * snd_soc_get_strobe - strobe get callback
3264 * @kcontrol: mixer control
3265 * @ucontrol: control element information
3267 * Callback get the value of a strobe mixer control.
3269 * Returns 0 for success.
3271 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
3272 struct snd_ctl_elem_value *ucontrol)
3274 struct soc_mixer_control *mc =
3275 (struct soc_mixer_control *)kcontrol->private_value;
3276 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3277 unsigned int reg = mc->reg;
3278 unsigned int shift = mc->shift;
3279 unsigned int mask = 1 << shift;
3280 unsigned int invert = mc->invert != 0;
3281 unsigned int val = snd_soc_read(codec, reg) & mask;
3283 if (shift != 0 && val != 0)
3285 ucontrol->value.enumerated.item[0] = val ^ invert;
3289 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
3292 * snd_soc_put_strobe - strobe put callback
3293 * @kcontrol: mixer control
3294 * @ucontrol: control element information
3296 * Callback strobe a register bit to high then low (or the inverse)
3297 * in one pass of a single mixer enum control.
3299 * Returns 1 for success.
3301 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
3302 struct snd_ctl_elem_value *ucontrol)
3304 struct soc_mixer_control *mc =
3305 (struct soc_mixer_control *)kcontrol->private_value;
3306 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3307 unsigned int reg = mc->reg;
3308 unsigned int shift = mc->shift;
3309 unsigned int mask = 1 << shift;
3310 unsigned int invert = mc->invert != 0;
3311 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
3312 unsigned int val1 = (strobe ^ invert) ? mask : 0;
3313 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
3316 err = snd_soc_update_bits_locked(codec, reg, mask, val1);
3320 err = snd_soc_update_bits_locked(codec, reg, mask, val2);
3323 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);
3326 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3328 * @clk_id: DAI specific clock ID
3329 * @freq: new clock frequency in Hz
3330 * @dir: new clock direction - input/output.
3332 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3334 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
3335 unsigned int freq, int dir)
3337 if (dai->driver && dai->driver->ops->set_sysclk)
3338 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
3339 else if (dai->codec && dai->codec->driver->set_sysclk)
3340 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
3345 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
3348 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3350 * @clk_id: DAI specific clock ID
3351 * @source: Source for the clock
3352 * @freq: new clock frequency in Hz
3353 * @dir: new clock direction - input/output.
3355 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3357 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
3358 int source, unsigned int freq, int dir)
3360 if (codec->driver->set_sysclk)
3361 return codec->driver->set_sysclk(codec, clk_id, source,
3366 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
3369 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3371 * @div_id: DAI specific clock divider ID
3372 * @div: new clock divisor.
3374 * Configures the clock dividers. This is used to derive the best DAI bit and
3375 * frame clocks from the system or master clock. It's best to set the DAI bit
3376 * and frame clocks as low as possible to save system power.
3378 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
3379 int div_id, int div)
3381 if (dai->driver && dai->driver->ops->set_clkdiv)
3382 return dai->driver->ops->set_clkdiv(dai, div_id, div);
3386 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
3389 * snd_soc_dai_set_pll - configure DAI PLL.
3391 * @pll_id: DAI specific PLL ID
3392 * @source: DAI specific source for the PLL
3393 * @freq_in: PLL input clock frequency in Hz
3394 * @freq_out: requested PLL output clock frequency in Hz
3396 * Configures and enables PLL to generate output clock based on input clock.
3398 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
3399 unsigned int freq_in, unsigned int freq_out)
3401 if (dai->driver && dai->driver->ops->set_pll)
3402 return dai->driver->ops->set_pll(dai, pll_id, source,
3404 else if (dai->codec && dai->codec->driver->set_pll)
3405 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
3410 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
3413 * snd_soc_codec_set_pll - configure codec PLL.
3415 * @pll_id: DAI specific PLL ID
3416 * @source: DAI specific source for the PLL
3417 * @freq_in: PLL input clock frequency in Hz
3418 * @freq_out: requested PLL output clock frequency in Hz
3420 * Configures and enables PLL to generate output clock based on input clock.
3422 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
3423 unsigned int freq_in, unsigned int freq_out)
3425 if (codec->driver->set_pll)
3426 return codec->driver->set_pll(codec, pll_id, source,
3431 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
3434 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3436 * @fmt: SND_SOC_DAIFMT_ format value.
3438 * Configures the DAI hardware format and clocking.
3440 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
3442 if (dai->driver == NULL)
3444 if (dai->driver->ops->set_fmt == NULL)
3446 return dai->driver->ops->set_fmt(dai, fmt);
3448 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
3451 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3453 * @tx_mask: bitmask representing active TX slots.
3454 * @rx_mask: bitmask representing active RX slots.
3455 * @slots: Number of slots in use.
3456 * @slot_width: Width in bits for each slot.
3458 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3461 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
3462 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3464 if (dai->driver && dai->driver->ops->set_tdm_slot)
3465 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3470 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3473 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3475 * @tx_num: how many TX channels
3476 * @tx_slot: pointer to an array which imply the TX slot number channel
3478 * @rx_num: how many RX channels
3479 * @rx_slot: pointer to an array which imply the RX slot number channel
3482 * configure the relationship between channel number and TDM slot number.
3484 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3485 unsigned int tx_num, unsigned int *tx_slot,
3486 unsigned int rx_num, unsigned int *rx_slot)
3488 if (dai->driver && dai->driver->ops->set_channel_map)
3489 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3494 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3497 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3499 * @tristate: tristate enable
3501 * Tristates the DAI so that others can use it.
3503 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3505 if (dai->driver && dai->driver->ops->set_tristate)
3506 return dai->driver->ops->set_tristate(dai, tristate);
3510 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3513 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3515 * @mute: mute enable
3517 * Mutes the DAI DAC.
3519 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
3521 if (dai->driver && dai->driver->ops->digital_mute)
3522 return dai->driver->ops->digital_mute(dai, mute);
3526 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3529 * snd_soc_register_card - Register a card with the ASoC core
3531 * @card: Card to register
3534 int snd_soc_register_card(struct snd_soc_card *card)
3538 if (!card->name || !card->dev)
3541 for (i = 0; i < card->num_links; i++) {
3542 struct snd_soc_dai_link *link = &card->dai_link[i];
3545 * Codec must be specified by 1 of name or OF node,
3546 * not both or neither.
3548 if (!!link->codec_name == !!link->codec_of_node) {
3549 dev_err(card->dev, "ASoC: Neither/both codec"
3550 " name/of_node are set for %s\n", link->name);
3553 /* Codec DAI name must be specified */
3554 if (!link->codec_dai_name) {
3555 dev_err(card->dev, "ASoC: codec_dai_name not"
3556 " set for %s\n", link->name);
3561 * Platform may be specified by either name or OF node, but
3562 * can be left unspecified, and a dummy platform will be used.
3564 if (link->platform_name && link->platform_of_node) {
3565 dev_err(card->dev, "ASoC: Both platform name/of_node"
3566 " are set for %s\n", link->name);
3571 * CPU device may be specified by either name or OF node, but
3572 * can be left unspecified, and will be matched based on DAI
3575 if (link->cpu_name && link->cpu_of_node) {
3576 dev_err(card->dev, "ASoC: Neither/both "
3577 "cpu name/of_node are set for %s\n",link->name);
3581 * At least one of CPU DAI name or CPU device name/node must be
3584 if (!link->cpu_dai_name &&
3585 !(link->cpu_name || link->cpu_of_node)) {
3586 dev_err(card->dev, "ASoC: Neither cpu_dai_name nor "
3587 "cpu_name/of_node are set for %s\n", link->name);
3592 dev_set_drvdata(card->dev, card);
3594 snd_soc_initialize_card_lists(card);
3596 soc_init_card_debugfs(card);
3598 card->rtd = devm_kzalloc(card->dev,
3599 sizeof(struct snd_soc_pcm_runtime) *
3600 (card->num_links + card->num_aux_devs),
3602 if (card->rtd == NULL)
3605 card->rtd_aux = &card->rtd[card->num_links];
3607 for (i = 0; i < card->num_links; i++)
3608 card->rtd[i].dai_link = &card->dai_link[i];
3610 INIT_LIST_HEAD(&card->list);
3611 INIT_LIST_HEAD(&card->dapm_dirty);
3612 card->instantiated = 0;
3613 mutex_init(&card->mutex);
3614 mutex_init(&card->dapm_mutex);
3616 ret = snd_soc_instantiate_card(card);
3618 soc_cleanup_card_debugfs(card);
3622 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3625 * snd_soc_unregister_card - Unregister a card with the ASoC core
3627 * @card: Card to unregister
3630 int snd_soc_unregister_card(struct snd_soc_card *card)
3632 if (card->instantiated)
3633 soc_cleanup_card_resources(card);
3634 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
3638 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3641 * Simplify DAI link configuration by removing ".-1" from device names
3642 * and sanitizing names.
3644 static char *fmt_single_name(struct device *dev, int *id)
3646 char *found, name[NAME_SIZE];
3649 if (dev_name(dev) == NULL)
3652 strlcpy(name, dev_name(dev), NAME_SIZE);
3654 /* are we a "%s.%d" name (platform and SPI components) */
3655 found = strstr(name, dev->driver->name);
3658 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3660 /* discard ID from name if ID == -1 */
3662 found[strlen(dev->driver->name)] = '\0';
3666 /* I2C component devices are named "bus-addr" */
3667 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3668 char tmp[NAME_SIZE];
3670 /* create unique ID number from I2C addr and bus */
3671 *id = ((id1 & 0xffff) << 16) + id2;
3673 /* sanitize component name for DAI link creation */
3674 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3675 strlcpy(name, tmp, NAME_SIZE);
3680 return kstrdup(name, GFP_KERNEL);
3684 * Simplify DAI link naming for single devices with multiple DAIs by removing
3685 * any ".-1" and using the DAI name (instead of device name).
3687 static inline char *fmt_multiple_name(struct device *dev,
3688 struct snd_soc_dai_driver *dai_drv)
3690 if (dai_drv->name == NULL) {
3691 dev_err(dev, "ASoC: error - multiple DAI %s registered with"
3692 " no name\n", dev_name(dev));
3696 return kstrdup(dai_drv->name, GFP_KERNEL);
3700 * snd_soc_register_dai - Register a DAI with the ASoC core
3702 * @dai: DAI to register
3704 int snd_soc_register_dai(struct device *dev,
3705 struct snd_soc_dai_driver *dai_drv)
3707 struct snd_soc_codec *codec;
3708 struct snd_soc_dai *dai;
3710 dev_dbg(dev, "ASoC: dai register %s\n", dev_name(dev));
3712 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3716 /* create DAI component name */
3717 dai->name = fmt_single_name(dev, &dai->id);
3718 if (dai->name == NULL) {
3724 dai->driver = dai_drv;
3725 dai->dapm.dev = dev;
3726 if (!dai->driver->ops)
3727 dai->driver->ops = &null_dai_ops;
3729 mutex_lock(&client_mutex);
3731 list_for_each_entry(codec, &codec_list, list) {
3732 if (codec->dev == dev) {
3733 dev_dbg(dev, "ASoC: Mapped DAI %s to CODEC %s\n",
3734 dai->name, codec->name);
3741 dai->dapm.idle_bias_off = 1;
3743 list_add(&dai->list, &dai_list);
3745 mutex_unlock(&client_mutex);
3747 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
3751 EXPORT_SYMBOL_GPL(snd_soc_register_dai);
3754 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3756 * @dai: DAI to unregister
3758 void snd_soc_unregister_dai(struct device *dev)
3760 struct snd_soc_dai *dai;
3762 list_for_each_entry(dai, &dai_list, list) {
3763 if (dev == dai->dev)
3769 mutex_lock(&client_mutex);
3770 list_del(&dai->list);
3771 mutex_unlock(&client_mutex);
3773 dev_dbg(dev, "ASoC: Unregistered DAI '%s'\n", dai->name);
3777 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
3780 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3782 * @dai: Array of DAIs to register
3783 * @count: Number of DAIs
3785 int snd_soc_register_dais(struct device *dev,
3786 struct snd_soc_dai_driver *dai_drv, size_t count)
3788 struct snd_soc_codec *codec;
3789 struct snd_soc_dai *dai;
3792 dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
3794 for (i = 0; i < count; i++) {
3796 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3802 /* create DAI component name */
3803 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3804 if (dai->name == NULL) {
3811 dai->driver = &dai_drv[i];
3812 if (dai->driver->id)
3813 dai->id = dai->driver->id;
3816 dai->dapm.dev = dev;
3817 if (!dai->driver->ops)
3818 dai->driver->ops = &null_dai_ops;
3820 mutex_lock(&client_mutex);
3822 list_for_each_entry(codec, &codec_list, list) {
3823 if (codec->dev == dev) {
3824 dev_dbg(dev, "ASoC: Mapped DAI %s to "
3825 "CODEC %s\n", dai->name, codec->name);
3832 dai->dapm.idle_bias_off = 1;
3834 list_add(&dai->list, &dai_list);
3836 mutex_unlock(&client_mutex);
3838 dev_dbg(dai->dev, "ASoC: Registered DAI '%s'\n", dai->name);
3844 for (i--; i >= 0; i--)
3845 snd_soc_unregister_dai(dev);
3849 EXPORT_SYMBOL_GPL(snd_soc_register_dais);
3852 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3854 * @dai: Array of DAIs to unregister
3855 * @count: Number of DAIs
3857 void snd_soc_unregister_dais(struct device *dev, size_t count)
3861 for (i = 0; i < count; i++)
3862 snd_soc_unregister_dai(dev);
3864 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
3867 * snd_soc_register_platform - Register a platform with the ASoC core
3869 * @platform: platform to register
3871 int snd_soc_register_platform(struct device *dev,
3872 struct snd_soc_platform_driver *platform_drv)
3874 struct snd_soc_platform *platform;
3876 dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
3878 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3879 if (platform == NULL)
3882 /* create platform component name */
3883 platform->name = fmt_single_name(dev, &platform->id);
3884 if (platform->name == NULL) {
3889 platform->dev = dev;
3890 platform->driver = platform_drv;
3891 platform->dapm.dev = dev;
3892 platform->dapm.platform = platform;
3893 platform->dapm.stream_event = platform_drv->stream_event;
3894 mutex_init(&platform->mutex);
3896 mutex_lock(&client_mutex);
3897 list_add(&platform->list, &platform_list);
3898 mutex_unlock(&client_mutex);
3900 dev_dbg(dev, "ASoC: Registered platform '%s'\n", platform->name);
3904 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3907 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3909 * @platform: platform to unregister
3911 void snd_soc_unregister_platform(struct device *dev)
3913 struct snd_soc_platform *platform;
3915 list_for_each_entry(platform, &platform_list, list) {
3916 if (dev == platform->dev)
3922 mutex_lock(&client_mutex);
3923 list_del(&platform->list);
3924 mutex_unlock(&client_mutex);
3926 dev_dbg(dev, "ASoC: Unregistered platform '%s'\n", platform->name);
3927 kfree(platform->name);
3930 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3932 static u64 codec_format_map[] = {
3933 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
3934 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
3935 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
3936 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
3937 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
3938 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
3939 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3940 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3941 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
3942 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
3943 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
3944 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
3945 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
3946 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
3947 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3948 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
3951 /* Fix up the DAI formats for endianness: codecs don't actually see
3952 * the endianness of the data but we're using the CPU format
3953 * definitions which do need to include endianness so we ensure that
3954 * codec DAIs always have both big and little endian variants set.
3956 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
3960 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
3961 if (stream->formats & codec_format_map[i])
3962 stream->formats |= codec_format_map[i];
3966 * snd_soc_register_codec - Register a codec with the ASoC core
3968 * @codec: codec to register
3970 int snd_soc_register_codec(struct device *dev,
3971 const struct snd_soc_codec_driver *codec_drv,
3972 struct snd_soc_dai_driver *dai_drv,
3976 struct snd_soc_codec *codec;
3979 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3981 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3985 /* create CODEC component name */
3986 codec->name = fmt_single_name(dev, &codec->id);
3987 if (codec->name == NULL) {
3992 if (codec_drv->compress_type)
3993 codec->compress_type = codec_drv->compress_type;
3995 codec->compress_type = SND_SOC_FLAT_COMPRESSION;
3997 codec->write = codec_drv->write;
3998 codec->read = codec_drv->read;
3999 codec->volatile_register = codec_drv->volatile_register;
4000 codec->readable_register = codec_drv->readable_register;
4001 codec->writable_register = codec_drv->writable_register;
4002 codec->ignore_pmdown_time = codec_drv->ignore_pmdown_time;
4003 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
4004 codec->dapm.dev = dev;
4005 codec->dapm.codec = codec;
4006 codec->dapm.seq_notifier = codec_drv->seq_notifier;
4007 codec->dapm.stream_event = codec_drv->stream_event;
4009 codec->driver = codec_drv;
4010 codec->num_dai = num_dai;
4011 mutex_init(&codec->mutex);
4013 /* allocate CODEC register cache */
4014 if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
4015 reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
4016 codec->reg_size = reg_size;
4017 /* it is necessary to make a copy of the default register cache
4018 * because in the case of using a compression type that requires
4019 * the default register cache to be marked as the
4020 * kernel might have freed the array by the time we initialize
4023 if (codec_drv->reg_cache_default) {
4024 codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
4025 reg_size, GFP_KERNEL);
4026 if (!codec->reg_def_copy) {
4033 if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
4034 if (!codec->volatile_register)
4035 codec->volatile_register = snd_soc_default_volatile_register;
4036 if (!codec->readable_register)
4037 codec->readable_register = snd_soc_default_readable_register;
4038 if (!codec->writable_register)
4039 codec->writable_register = snd_soc_default_writable_register;
4042 for (i = 0; i < num_dai; i++) {
4043 fixup_codec_formats(&dai_drv[i].playback);
4044 fixup_codec_formats(&dai_drv[i].capture);
4047 mutex_lock(&client_mutex);
4048 list_add(&codec->list, &codec_list);
4049 mutex_unlock(&client_mutex);
4051 /* register any DAIs */
4053 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
4055 dev_err(codec->dev, "ASoC: Failed to regster"
4056 " DAIs: %d\n", ret);
4059 dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n", codec->name);
4067 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
4070 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4072 * @codec: codec to unregister
4074 void snd_soc_unregister_codec(struct device *dev)
4076 struct snd_soc_codec *codec;
4079 list_for_each_entry(codec, &codec_list, list) {
4080 if (dev == codec->dev)
4087 for (i = 0; i < codec->num_dai; i++)
4088 snd_soc_unregister_dai(dev);
4090 mutex_lock(&client_mutex);
4091 list_del(&codec->list);
4092 mutex_unlock(&client_mutex);
4094 dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n", codec->name);
4096 snd_soc_cache_exit(codec);
4097 kfree(codec->reg_def_copy);
4101 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
4103 /* Retrieve a card's name from device tree */
4104 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
4105 const char *propname)
4107 struct device_node *np = card->dev->of_node;
4110 ret = of_property_read_string_index(np, propname, 0, &card->name);
4112 * EINVAL means the property does not exist. This is fine providing
4113 * card->name was previously set, which is checked later in
4114 * snd_soc_register_card.
4116 if (ret < 0 && ret != -EINVAL) {
4118 "ASoC: Property '%s' could not be read: %d\n",
4125 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
4127 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
4128 const char *propname)
4130 struct device_node *np = card->dev->of_node;
4132 struct snd_soc_dapm_route *routes;
4135 num_routes = of_property_count_strings(np, propname);
4136 if (num_routes < 0 || num_routes & 1) {
4137 dev_err(card->dev, "ASoC: Property '%s' does not exist or its"
4138 " length is not even\n", propname);
4143 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4148 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
4152 "ASoC: Could not allocate DAPM route table\n");
4156 for (i = 0; i < num_routes; i++) {
4157 ret = of_property_read_string_index(np, propname,
4158 2 * i, &routes[i].sink);
4161 "ASoC: Property '%s' index %d could not be read: %d\n",
4162 propname, 2 * i, ret);
4166 ret = of_property_read_string_index(np, propname,
4167 (2 * i) + 1, &routes[i].source);
4170 "ASoC: Property '%s' index %d could not be read: %d\n",
4171 propname, (2 * i) + 1, ret);
4177 card->num_dapm_routes = num_routes;
4178 card->dapm_routes = routes;
4182 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
4184 static int __init snd_soc_init(void)
4186 #ifdef CONFIG_DEBUG_FS
4187 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
4188 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
4189 pr_warn("ASoC: Failed to create debugfs directory\n");
4190 snd_soc_debugfs_root = NULL;
4193 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
4195 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4197 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
4199 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4201 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
4202 &platform_list_fops))
4203 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4206 snd_soc_util_init();
4208 return platform_driver_register(&soc_driver);
4210 module_init(snd_soc_init);
4212 static void __exit snd_soc_exit(void)
4214 snd_soc_util_exit();
4216 #ifdef CONFIG_DEBUG_FS
4217 debugfs_remove_recursive(snd_soc_debugfs_root);
4219 platform_driver_unregister(&soc_driver);
4221 module_exit(snd_soc_exit);
4223 /* Module information */
4224 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4225 MODULE_DESCRIPTION("ALSA SoC Core");
4226 MODULE_LICENSE("GPL");
4227 MODULE_ALIAS("platform:soc-audio");