2 * soc-core.c -- ALSA SoC Audio Layer
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 * o Add hw rules to enforce rates, etc.
20 * o More testing with other codecs/machines.
21 * o Add more codecs and platforms to ensure good API coverage.
22 * o Support TDM on PCM and I2S
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
30 #include <linux/bitops.h>
31 #include <linux/debugfs.h>
32 #include <linux/platform_device.h>
33 #include <linux/pinctrl/consumer.h>
34 #include <linux/ctype.h>
35 #include <linux/slab.h>
37 #include <linux/gpio.h>
38 #include <linux/of_gpio.h>
39 #include <sound/ac97_codec.h>
40 #include <sound/core.h>
41 #include <sound/jack.h>
42 #include <sound/pcm.h>
43 #include <sound/pcm_params.h>
44 #include <sound/soc.h>
45 #include <sound/soc-dpcm.h>
46 #include <sound/initval.h>
48 #define CREATE_TRACE_POINTS
49 #include <trace/events/asoc.h>
53 #ifdef CONFIG_DEBUG_FS
54 struct dentry *snd_soc_debugfs_root;
55 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
58 static DEFINE_MUTEX(client_mutex);
59 static LIST_HEAD(dai_list);
60 static LIST_HEAD(platform_list);
61 static LIST_HEAD(codec_list);
62 static LIST_HEAD(component_list);
65 * This is a timeout to do a DAPM powerdown after a stream is closed().
66 * It can be used to eliminate pops between different playback streams, e.g.
67 * between two audio tracks.
69 static int pmdown_time = 5000;
70 module_param(pmdown_time, int, 0);
71 MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
73 struct snd_ac97_reset_cfg {
75 struct pinctrl_state *pstate_reset;
76 struct pinctrl_state *pstate_warm_reset;
77 struct pinctrl_state *pstate_run;
83 /* returns the minimum number of bytes needed to represent
84 * a particular given value */
85 static int min_bytes_needed(unsigned long val)
90 for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
93 c = (sizeof val * 8) - c;
101 /* fill buf which is 'len' bytes with a formatted
102 * string of the form 'reg: value\n' */
103 static int format_register_str(struct snd_soc_codec *codec,
104 unsigned int reg, char *buf, size_t len)
106 int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
107 int regsize = codec->driver->reg_word_size * 2;
109 char tmpbuf[len + 1];
110 char regbuf[regsize + 1];
112 /* since tmpbuf is allocated on the stack, warn the callers if they
113 * try to abuse this function */
116 /* +2 for ': ' and + 1 for '\n' */
117 if (wordsize + regsize + 2 + 1 != len)
120 ret = snd_soc_read(codec, reg);
122 memset(regbuf, 'X', regsize);
123 regbuf[regsize] = '\0';
125 snprintf(regbuf, regsize + 1, "%.*x", regsize, ret);
128 /* prepare the buffer */
129 snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf);
130 /* copy it back to the caller without the '\0' */
131 memcpy(buf, tmpbuf, len);
136 /* codec register dump */
137 static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
138 size_t count, loff_t pos)
141 int wordsize, regsize;
146 wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
147 regsize = codec->driver->reg_word_size * 2;
149 len = wordsize + regsize + 2 + 1;
151 if (!codec->driver->reg_cache_size)
154 if (codec->driver->reg_cache_step)
155 step = codec->driver->reg_cache_step;
157 for (i = 0; i < codec->driver->reg_cache_size; i += step) {
158 if (!snd_soc_codec_readable_register(codec, i))
160 if (codec->driver->display_register) {
161 count += codec->driver->display_register(codec, buf + count,
162 PAGE_SIZE - count, i);
164 /* only support larger than PAGE_SIZE bytes debugfs
165 * entries for the default case */
167 if (total + len >= count - 1)
169 format_register_str(codec, i, buf + total, len);
176 total = min(total, count - 1);
181 static ssize_t codec_reg_show(struct device *dev,
182 struct device_attribute *attr, char *buf)
184 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
186 return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
189 static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
191 static ssize_t pmdown_time_show(struct device *dev,
192 struct device_attribute *attr, char *buf)
194 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
196 return sprintf(buf, "%ld\n", rtd->pmdown_time);
199 static ssize_t pmdown_time_set(struct device *dev,
200 struct device_attribute *attr,
201 const char *buf, size_t count)
203 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
206 ret = kstrtol(buf, 10, &rtd->pmdown_time);
213 static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
215 #ifdef CONFIG_DEBUG_FS
216 static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
217 size_t count, loff_t *ppos)
220 struct snd_soc_codec *codec = file->private_data;
223 if (*ppos < 0 || !count)
226 buf = kmalloc(count, GFP_KERNEL);
230 ret = soc_codec_reg_show(codec, buf, count, *ppos);
232 if (copy_to_user(user_buf, buf, ret)) {
243 static ssize_t codec_reg_write_file(struct file *file,
244 const char __user *user_buf, size_t count, loff_t *ppos)
249 unsigned long reg, value;
250 struct snd_soc_codec *codec = file->private_data;
253 buf_size = min(count, (sizeof(buf)-1));
254 if (copy_from_user(buf, user_buf, buf_size))
258 while (*start == ' ')
260 reg = simple_strtoul(start, &start, 16);
261 while (*start == ' ')
263 ret = kstrtoul(start, 16, &value);
267 /* Userspace has been fiddling around behind the kernel's back */
268 add_taint(TAINT_USER, LOCKDEP_NOW_UNRELIABLE);
270 snd_soc_write(codec, reg, value);
274 static const struct file_operations codec_reg_fops = {
276 .read = codec_reg_read_file,
277 .write = codec_reg_write_file,
278 .llseek = default_llseek,
281 static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
283 struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
285 codec->debugfs_codec_root = debugfs_create_dir(codec->name,
287 if (!codec->debugfs_codec_root) {
289 "ASoC: Failed to create codec debugfs directory\n");
293 debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
295 debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
298 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
299 codec->debugfs_codec_root,
300 codec, &codec_reg_fops);
301 if (!codec->debugfs_reg)
303 "ASoC: Failed to create codec register debugfs file\n");
305 snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root);
308 static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
310 debugfs_remove_recursive(codec->debugfs_codec_root);
313 static void soc_init_platform_debugfs(struct snd_soc_platform *platform)
315 struct dentry *debugfs_card_root = platform->card->debugfs_card_root;
317 platform->debugfs_platform_root = debugfs_create_dir(platform->name,
319 if (!platform->debugfs_platform_root) {
320 dev_warn(platform->dev,
321 "ASoC: Failed to create platform debugfs directory\n");
325 snd_soc_dapm_debugfs_init(&platform->dapm,
326 platform->debugfs_platform_root);
329 static void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
331 debugfs_remove_recursive(platform->debugfs_platform_root);
334 static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
335 size_t count, loff_t *ppos)
337 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
338 ssize_t len, ret = 0;
339 struct snd_soc_codec *codec;
344 list_for_each_entry(codec, &codec_list, list) {
345 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
349 if (ret > PAGE_SIZE) {
356 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
363 static const struct file_operations codec_list_fops = {
364 .read = codec_list_read_file,
365 .llseek = default_llseek,/* read accesses f_pos */
368 static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
369 size_t count, loff_t *ppos)
371 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
372 ssize_t len, ret = 0;
373 struct snd_soc_dai *dai;
378 list_for_each_entry(dai, &dai_list, list) {
379 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", dai->name);
382 if (ret > PAGE_SIZE) {
388 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
395 static const struct file_operations dai_list_fops = {
396 .read = dai_list_read_file,
397 .llseek = default_llseek,/* read accesses f_pos */
400 static ssize_t platform_list_read_file(struct file *file,
401 char __user *user_buf,
402 size_t count, loff_t *ppos)
404 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
405 ssize_t len, ret = 0;
406 struct snd_soc_platform *platform;
411 list_for_each_entry(platform, &platform_list, list) {
412 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
416 if (ret > PAGE_SIZE) {
422 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
429 static const struct file_operations platform_list_fops = {
430 .read = platform_list_read_file,
431 .llseek = default_llseek,/* read accesses f_pos */
434 static void soc_init_card_debugfs(struct snd_soc_card *card)
436 card->debugfs_card_root = debugfs_create_dir(card->name,
437 snd_soc_debugfs_root);
438 if (!card->debugfs_card_root) {
440 "ASoC: Failed to create card debugfs directory\n");
444 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
445 card->debugfs_card_root,
447 if (!card->debugfs_pop_time)
449 "ASoC: Failed to create pop time debugfs file\n");
452 static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
454 debugfs_remove_recursive(card->debugfs_card_root);
459 static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
463 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
467 static inline void soc_init_platform_debugfs(struct snd_soc_platform *platform)
471 static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
475 static inline void soc_init_card_debugfs(struct snd_soc_card *card)
479 static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
484 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
485 const char *dai_link, int stream)
489 for (i = 0; i < card->num_links; i++) {
490 if (card->rtd[i].dai_link->no_pcm &&
491 !strcmp(card->rtd[i].dai_link->name, dai_link))
492 return card->rtd[i].pcm->streams[stream].substream;
494 dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link);
497 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);
499 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
500 const char *dai_link)
504 for (i = 0; i < card->num_links; i++) {
505 if (!strcmp(card->rtd[i].dai_link->name, dai_link))
506 return &card->rtd[i];
508 dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link);
511 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
513 #ifdef CONFIG_SND_SOC_AC97_BUS
514 /* unregister ac97 codec */
515 static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
517 if (codec->ac97->dev.bus)
518 device_unregister(&codec->ac97->dev);
522 /* stop no dev release warning */
523 static void soc_ac97_device_release(struct device *dev){}
525 /* register ac97 codec to bus */
526 static int soc_ac97_dev_register(struct snd_soc_codec *codec)
530 codec->ac97->dev.bus = &ac97_bus_type;
531 codec->ac97->dev.parent = codec->card->dev;
532 codec->ac97->dev.release = soc_ac97_device_release;
534 dev_set_name(&codec->ac97->dev, "%d-%d:%s",
535 codec->card->snd_card->number, 0, codec->name);
536 err = device_register(&codec->ac97->dev);
538 dev_err(codec->dev, "ASoC: Can't register ac97 bus\n");
539 codec->ac97->dev.bus = NULL;
546 static void codec2codec_close_delayed_work(struct work_struct *work)
548 /* Currently nothing to do for c2c links
549 * Since c2c links are internal nodes in the DAPM graph and
550 * don't interface with the outside world or application layer
551 * we don't have to do any special handling on close.
555 #ifdef CONFIG_PM_SLEEP
556 /* powers down audio subsystem for suspend */
557 int snd_soc_suspend(struct device *dev)
559 struct snd_soc_card *card = dev_get_drvdata(dev);
560 struct snd_soc_codec *codec;
563 /* If the initialization of this soc device failed, there is no codec
564 * associated with it. Just bail out in this case.
566 if (list_empty(&card->codec_dev_list))
569 /* Due to the resume being scheduled into a workqueue we could
570 * suspend before that's finished - wait for it to complete.
572 snd_power_lock(card->snd_card);
573 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
574 snd_power_unlock(card->snd_card);
576 /* we're going to block userspace touching us until resume completes */
577 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
579 /* mute any active DACs */
580 for (i = 0; i < card->num_rtd; i++) {
581 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
582 struct snd_soc_dai_driver *drv = dai->driver;
584 if (card->rtd[i].dai_link->ignore_suspend)
587 if (drv->ops->digital_mute && dai->playback_active)
588 drv->ops->digital_mute(dai, 1);
591 /* suspend all pcms */
592 for (i = 0; i < card->num_rtd; i++) {
593 if (card->rtd[i].dai_link->ignore_suspend)
596 snd_pcm_suspend_all(card->rtd[i].pcm);
599 if (card->suspend_pre)
600 card->suspend_pre(card);
602 for (i = 0; i < card->num_rtd; i++) {
603 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
604 struct snd_soc_platform *platform = card->rtd[i].platform;
606 if (card->rtd[i].dai_link->ignore_suspend)
609 if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
610 cpu_dai->driver->suspend(cpu_dai);
611 if (platform->driver->suspend && !platform->suspended) {
612 platform->driver->suspend(cpu_dai);
613 platform->suspended = 1;
617 /* close any waiting streams and save state */
618 for (i = 0; i < card->num_rtd; i++) {
619 flush_delayed_work(&card->rtd[i].delayed_work);
620 card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
623 for (i = 0; i < card->num_rtd; i++) {
625 if (card->rtd[i].dai_link->ignore_suspend)
628 snd_soc_dapm_stream_event(&card->rtd[i],
629 SNDRV_PCM_STREAM_PLAYBACK,
630 SND_SOC_DAPM_STREAM_SUSPEND);
632 snd_soc_dapm_stream_event(&card->rtd[i],
633 SNDRV_PCM_STREAM_CAPTURE,
634 SND_SOC_DAPM_STREAM_SUSPEND);
637 /* Recheck all analogue paths too */
638 dapm_mark_io_dirty(&card->dapm);
639 snd_soc_dapm_sync(&card->dapm);
641 /* suspend all CODECs */
642 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
643 /* If there are paths active then the CODEC will be held with
644 * bias _ON and should not be suspended. */
645 if (!codec->suspended && codec->driver->suspend) {
646 switch (codec->dapm.bias_level) {
647 case SND_SOC_BIAS_STANDBY:
649 * If the CODEC is capable of idle
650 * bias off then being in STANDBY
651 * means it's doing something,
652 * otherwise fall through.
654 if (codec->dapm.idle_bias_off) {
656 "ASoC: idle_bias_off CODEC on over suspend\n");
659 case SND_SOC_BIAS_OFF:
660 codec->driver->suspend(codec);
661 codec->suspended = 1;
662 codec->cache_sync = 1;
663 if (codec->using_regmap)
664 regcache_mark_dirty(codec->control_data);
668 "ASoC: CODEC is on over suspend\n");
674 for (i = 0; i < card->num_rtd; i++) {
675 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
677 if (card->rtd[i].dai_link->ignore_suspend)
680 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
681 cpu_dai->driver->suspend(cpu_dai);
684 if (card->suspend_post)
685 card->suspend_post(card);
689 EXPORT_SYMBOL_GPL(snd_soc_suspend);
691 /* deferred resume work, so resume can complete before we finished
692 * setting our codec back up, which can be very slow on I2C
694 static void soc_resume_deferred(struct work_struct *work)
696 struct snd_soc_card *card =
697 container_of(work, struct snd_soc_card, deferred_resume_work);
698 struct snd_soc_codec *codec;
701 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
702 * so userspace apps are blocked from touching us
705 dev_dbg(card->dev, "ASoC: starting resume work\n");
707 /* Bring us up into D2 so that DAPM starts enabling things */
708 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
710 if (card->resume_pre)
711 card->resume_pre(card);
713 /* resume AC97 DAIs */
714 for (i = 0; i < card->num_rtd; i++) {
715 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
717 if (card->rtd[i].dai_link->ignore_suspend)
720 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
721 cpu_dai->driver->resume(cpu_dai);
724 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
725 /* If the CODEC was idle over suspend then it will have been
726 * left with bias OFF or STANDBY and suspended so we must now
727 * resume. Otherwise the suspend was suppressed.
729 if (codec->driver->resume && codec->suspended) {
730 switch (codec->dapm.bias_level) {
731 case SND_SOC_BIAS_STANDBY:
732 case SND_SOC_BIAS_OFF:
733 codec->driver->resume(codec);
734 codec->suspended = 0;
738 "ASoC: CODEC was on over suspend\n");
744 for (i = 0; i < card->num_rtd; i++) {
746 if (card->rtd[i].dai_link->ignore_suspend)
749 snd_soc_dapm_stream_event(&card->rtd[i],
750 SNDRV_PCM_STREAM_PLAYBACK,
751 SND_SOC_DAPM_STREAM_RESUME);
753 snd_soc_dapm_stream_event(&card->rtd[i],
754 SNDRV_PCM_STREAM_CAPTURE,
755 SND_SOC_DAPM_STREAM_RESUME);
758 /* unmute any active DACs */
759 for (i = 0; i < card->num_rtd; i++) {
760 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
761 struct snd_soc_dai_driver *drv = dai->driver;
763 if (card->rtd[i].dai_link->ignore_suspend)
766 if (drv->ops->digital_mute && dai->playback_active)
767 drv->ops->digital_mute(dai, 0);
770 for (i = 0; i < card->num_rtd; i++) {
771 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
772 struct snd_soc_platform *platform = card->rtd[i].platform;
774 if (card->rtd[i].dai_link->ignore_suspend)
777 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
778 cpu_dai->driver->resume(cpu_dai);
779 if (platform->driver->resume && platform->suspended) {
780 platform->driver->resume(cpu_dai);
781 platform->suspended = 0;
785 if (card->resume_post)
786 card->resume_post(card);
788 dev_dbg(card->dev, "ASoC: resume work completed\n");
790 /* userspace can access us now we are back as we were before */
791 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
793 /* Recheck all analogue paths too */
794 dapm_mark_io_dirty(&card->dapm);
795 snd_soc_dapm_sync(&card->dapm);
798 /* powers up audio subsystem after a suspend */
799 int snd_soc_resume(struct device *dev)
801 struct snd_soc_card *card = dev_get_drvdata(dev);
802 int i, ac97_control = 0;
804 /* If the initialization of this soc device failed, there is no codec
805 * associated with it. Just bail out in this case.
807 if (list_empty(&card->codec_dev_list))
810 /* AC97 devices might have other drivers hanging off them so
811 * need to resume immediately. Other drivers don't have that
812 * problem and may take a substantial amount of time to resume
813 * due to I/O costs and anti-pop so handle them out of line.
815 for (i = 0; i < card->num_rtd; i++) {
816 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
817 ac97_control |= cpu_dai->driver->ac97_control;
820 dev_dbg(dev, "ASoC: Resuming AC97 immediately\n");
821 soc_resume_deferred(&card->deferred_resume_work);
823 dev_dbg(dev, "ASoC: Scheduling resume work\n");
824 if (!schedule_work(&card->deferred_resume_work))
825 dev_err(dev, "ASoC: resume work item may be lost\n");
830 EXPORT_SYMBOL_GPL(snd_soc_resume);
832 #define snd_soc_suspend NULL
833 #define snd_soc_resume NULL
836 static const struct snd_soc_dai_ops null_dai_ops = {
839 static int soc_bind_dai_link(struct snd_soc_card *card, int num)
841 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
842 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
843 struct snd_soc_codec *codec;
844 struct snd_soc_platform *platform;
845 struct snd_soc_dai *codec_dai, *cpu_dai;
846 const char *platform_name;
848 dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num);
850 /* Find CPU DAI from registered DAIs*/
851 list_for_each_entry(cpu_dai, &dai_list, list) {
852 if (dai_link->cpu_of_node &&
853 (cpu_dai->dev->of_node != dai_link->cpu_of_node))
855 if (dai_link->cpu_name &&
856 strcmp(dev_name(cpu_dai->dev), dai_link->cpu_name))
858 if (dai_link->cpu_dai_name &&
859 strcmp(cpu_dai->name, dai_link->cpu_dai_name))
862 rtd->cpu_dai = cpu_dai;
866 dev_err(card->dev, "ASoC: CPU DAI %s not registered\n",
867 dai_link->cpu_dai_name);
868 return -EPROBE_DEFER;
871 /* Find CODEC from registered CODECs */
872 list_for_each_entry(codec, &codec_list, list) {
873 if (dai_link->codec_of_node) {
874 if (codec->dev->of_node != dai_link->codec_of_node)
877 if (strcmp(codec->name, dai_link->codec_name))
884 * CODEC found, so find CODEC DAI from registered DAIs from
887 list_for_each_entry(codec_dai, &dai_list, list) {
888 if (codec->dev == codec_dai->dev &&
889 !strcmp(codec_dai->name,
890 dai_link->codec_dai_name)) {
892 rtd->codec_dai = codec_dai;
896 if (!rtd->codec_dai) {
897 dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
898 dai_link->codec_dai_name);
899 return -EPROBE_DEFER;
904 dev_err(card->dev, "ASoC: CODEC %s not registered\n",
905 dai_link->codec_name);
906 return -EPROBE_DEFER;
909 /* if there's no platform we match on the empty platform */
910 platform_name = dai_link->platform_name;
911 if (!platform_name && !dai_link->platform_of_node)
912 platform_name = "snd-soc-dummy";
914 /* find one from the set of registered platforms */
915 list_for_each_entry(platform, &platform_list, list) {
916 if (dai_link->platform_of_node) {
917 if (platform->dev->of_node !=
918 dai_link->platform_of_node)
921 if (strcmp(platform->name, platform_name))
925 rtd->platform = platform;
927 if (!rtd->platform) {
928 dev_err(card->dev, "ASoC: platform %s not registered\n",
929 dai_link->platform_name);
930 return -EPROBE_DEFER;
938 static int soc_remove_platform(struct snd_soc_platform *platform)
942 if (platform->driver->remove) {
943 ret = platform->driver->remove(platform);
945 dev_err(platform->dev, "ASoC: failed to remove %d\n",
949 /* Make sure all DAPM widgets are freed */
950 snd_soc_dapm_free(&platform->dapm);
952 soc_cleanup_platform_debugfs(platform);
953 platform->probed = 0;
954 list_del(&platform->card_list);
955 module_put(platform->dev->driver->owner);
960 static void soc_remove_codec(struct snd_soc_codec *codec)
964 if (codec->driver->remove) {
965 err = codec->driver->remove(codec);
967 dev_err(codec->dev, "ASoC: failed to remove %d\n", err);
970 /* Make sure all DAPM widgets are freed */
971 snd_soc_dapm_free(&codec->dapm);
973 soc_cleanup_codec_debugfs(codec);
975 list_del(&codec->card_list);
976 module_put(codec->dev->driver->owner);
979 static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order)
981 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
982 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
985 /* unregister the rtd device */
986 if (rtd->dev_registered) {
987 device_remove_file(rtd->dev, &dev_attr_pmdown_time);
988 device_remove_file(rtd->dev, &dev_attr_codec_reg);
989 device_unregister(rtd->dev);
990 rtd->dev_registered = 0;
993 /* remove the CODEC DAI */
994 if (codec_dai && codec_dai->probed &&
995 codec_dai->driver->remove_order == order) {
996 if (codec_dai->driver->remove) {
997 err = codec_dai->driver->remove(codec_dai);
999 dev_err(codec_dai->dev,
1000 "ASoC: failed to remove %s: %d\n",
1001 codec_dai->name, err);
1003 codec_dai->probed = 0;
1004 list_del(&codec_dai->card_list);
1007 /* remove the cpu_dai */
1008 if (cpu_dai && cpu_dai->probed &&
1009 cpu_dai->driver->remove_order == order) {
1010 if (cpu_dai->driver->remove) {
1011 err = cpu_dai->driver->remove(cpu_dai);
1013 dev_err(cpu_dai->dev,
1014 "ASoC: failed to remove %s: %d\n",
1015 cpu_dai->name, err);
1017 cpu_dai->probed = 0;
1018 list_del(&cpu_dai->card_list);
1020 if (!cpu_dai->codec) {
1021 snd_soc_dapm_free(&cpu_dai->dapm);
1022 module_put(cpu_dai->dev->driver->owner);
1027 static void soc_remove_link_components(struct snd_soc_card *card, int num,
1030 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1031 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1032 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1033 struct snd_soc_platform *platform = rtd->platform;
1034 struct snd_soc_codec *codec;
1036 /* remove the platform */
1037 if (platform && platform->probed &&
1038 platform->driver->remove_order == order) {
1039 soc_remove_platform(platform);
1042 /* remove the CODEC-side CODEC */
1044 codec = codec_dai->codec;
1045 if (codec && codec->probed &&
1046 codec->driver->remove_order == order)
1047 soc_remove_codec(codec);
1050 /* remove any CPU-side CODEC */
1052 codec = cpu_dai->codec;
1053 if (codec && codec->probed &&
1054 codec->driver->remove_order == order)
1055 soc_remove_codec(codec);
1059 static void soc_remove_dai_links(struct snd_soc_card *card)
1063 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1065 for (dai = 0; dai < card->num_rtd; dai++)
1066 soc_remove_link_dais(card, dai, order);
1069 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1071 for (dai = 0; dai < card->num_rtd; dai++)
1072 soc_remove_link_components(card, dai, order);
1078 static void soc_set_name_prefix(struct snd_soc_card *card,
1079 struct snd_soc_codec *codec)
1083 if (card->codec_conf == NULL)
1086 for (i = 0; i < card->num_configs; i++) {
1087 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1088 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
1089 codec->name_prefix = map->name_prefix;
1095 static int soc_probe_codec(struct snd_soc_card *card,
1096 struct snd_soc_codec *codec)
1099 const struct snd_soc_codec_driver *driver = codec->driver;
1100 struct snd_soc_dai *dai;
1103 codec->dapm.card = card;
1104 soc_set_name_prefix(card, codec);
1106 if (!try_module_get(codec->dev->driver->owner))
1109 soc_init_codec_debugfs(codec);
1111 if (driver->dapm_widgets)
1112 snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
1113 driver->num_dapm_widgets);
1115 /* Create DAPM widgets for each DAI stream */
1116 list_for_each_entry(dai, &dai_list, list) {
1117 if (dai->dev != codec->dev)
1120 snd_soc_dapm_new_dai_widgets(&codec->dapm, dai);
1123 codec->dapm.idle_bias_off = driver->idle_bias_off;
1125 if (driver->probe) {
1126 ret = driver->probe(codec);
1129 "ASoC: failed to probe CODEC %d\n", ret);
1132 WARN(codec->dapm.idle_bias_off &&
1133 codec->dapm.bias_level != SND_SOC_BIAS_OFF,
1134 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1138 /* If the driver didn't set I/O up try regmap */
1139 if (!codec->write && dev_get_regmap(codec->dev, NULL))
1140 snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP);
1142 if (driver->controls)
1143 snd_soc_add_codec_controls(codec, driver->controls,
1144 driver->num_controls);
1145 if (driver->dapm_routes)
1146 snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
1147 driver->num_dapm_routes);
1149 /* mark codec as probed and add to card codec list */
1151 list_add(&codec->card_list, &card->codec_dev_list);
1152 list_add(&codec->dapm.list, &card->dapm_list);
1157 soc_cleanup_codec_debugfs(codec);
1158 module_put(codec->dev->driver->owner);
1163 static int soc_probe_platform(struct snd_soc_card *card,
1164 struct snd_soc_platform *platform)
1167 const struct snd_soc_platform_driver *driver = platform->driver;
1168 struct snd_soc_dai *dai;
1170 platform->card = card;
1171 platform->dapm.card = card;
1173 if (!try_module_get(platform->dev->driver->owner))
1176 soc_init_platform_debugfs(platform);
1178 if (driver->dapm_widgets)
1179 snd_soc_dapm_new_controls(&platform->dapm,
1180 driver->dapm_widgets, driver->num_dapm_widgets);
1182 /* Create DAPM widgets for each DAI stream */
1183 list_for_each_entry(dai, &dai_list, list) {
1184 if (dai->dev != platform->dev)
1187 snd_soc_dapm_new_dai_widgets(&platform->dapm, dai);
1190 platform->dapm.idle_bias_off = 1;
1192 if (driver->probe) {
1193 ret = driver->probe(platform);
1195 dev_err(platform->dev,
1196 "ASoC: failed to probe platform %d\n", ret);
1201 if (driver->controls)
1202 snd_soc_add_platform_controls(platform, driver->controls,
1203 driver->num_controls);
1204 if (driver->dapm_routes)
1205 snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
1206 driver->num_dapm_routes);
1208 /* mark platform as probed and add to card platform list */
1209 platform->probed = 1;
1210 list_add(&platform->card_list, &card->platform_dev_list);
1211 list_add(&platform->dapm.list, &card->dapm_list);
1216 soc_cleanup_platform_debugfs(platform);
1217 module_put(platform->dev->driver->owner);
1222 static void rtd_release(struct device *dev)
1227 static int soc_post_component_init(struct snd_soc_card *card,
1228 struct snd_soc_codec *codec,
1229 int num, int dailess)
1231 struct snd_soc_dai_link *dai_link = NULL;
1232 struct snd_soc_aux_dev *aux_dev = NULL;
1233 struct snd_soc_pcm_runtime *rtd;
1234 const char *temp, *name;
1238 dai_link = &card->dai_link[num];
1239 rtd = &card->rtd[num];
1240 name = dai_link->name;
1242 aux_dev = &card->aux_dev[num];
1243 rtd = &card->rtd_aux[num];
1244 name = aux_dev->name;
1248 /* machine controls, routes and widgets are not prefixed */
1249 temp = codec->name_prefix;
1250 codec->name_prefix = NULL;
1252 /* do machine specific initialization */
1253 if (!dailess && dai_link->init)
1254 ret = dai_link->init(rtd);
1255 else if (dailess && aux_dev->init)
1256 ret = aux_dev->init(&codec->dapm);
1258 dev_err(card->dev, "ASoC: failed to init %s: %d\n", name, ret);
1261 codec->name_prefix = temp;
1263 /* register the rtd device */
1266 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1269 device_initialize(rtd->dev);
1270 rtd->dev->parent = card->dev;
1271 rtd->dev->release = rtd_release;
1272 rtd->dev->init_name = name;
1273 dev_set_drvdata(rtd->dev, rtd);
1274 mutex_init(&rtd->pcm_mutex);
1275 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1276 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1277 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1278 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1279 ret = device_add(rtd->dev);
1281 /* calling put_device() here to free the rtd->dev */
1282 put_device(rtd->dev);
1284 "ASoC: failed to register runtime device: %d\n", ret);
1287 rtd->dev_registered = 1;
1289 /* add DAPM sysfs entries for this codec */
1290 ret = snd_soc_dapm_sys_add(rtd->dev);
1293 "ASoC: failed to add codec dapm sysfs entries: %d\n", ret);
1295 /* add codec sysfs entries */
1296 ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
1299 "ASoC: failed to add codec sysfs files: %d\n", ret);
1301 #ifdef CONFIG_DEBUG_FS
1302 /* add DPCM sysfs entries */
1303 if (!dailess && !dai_link->dynamic)
1306 ret = soc_dpcm_debugfs_add(rtd);
1308 dev_err(rtd->dev, "ASoC: failed to add dpcm sysfs entries: %d\n", ret);
1315 static int soc_probe_link_components(struct snd_soc_card *card, int num,
1318 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1319 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1320 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1321 struct snd_soc_platform *platform = rtd->platform;
1324 /* probe the CPU-side component, if it is a CODEC */
1325 if (cpu_dai->codec &&
1326 !cpu_dai->codec->probed &&
1327 cpu_dai->codec->driver->probe_order == order) {
1328 ret = soc_probe_codec(card, cpu_dai->codec);
1333 /* probe the CODEC-side component */
1334 if (!codec_dai->codec->probed &&
1335 codec_dai->codec->driver->probe_order == order) {
1336 ret = soc_probe_codec(card, codec_dai->codec);
1341 /* probe the platform */
1342 if (!platform->probed &&
1343 platform->driver->probe_order == order) {
1344 ret = soc_probe_platform(card, platform);
1352 static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
1354 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1355 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1356 struct snd_soc_codec *codec = rtd->codec;
1357 struct snd_soc_platform *platform = rtd->platform;
1358 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1359 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1360 struct snd_soc_dapm_widget *play_w, *capture_w;
1363 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1364 card->name, num, order);
1366 /* config components */
1367 cpu_dai->platform = platform;
1368 codec_dai->card = card;
1369 cpu_dai->card = card;
1371 /* set default power off timeout */
1372 rtd->pmdown_time = pmdown_time;
1374 /* probe the cpu_dai */
1375 if (!cpu_dai->probed &&
1376 cpu_dai->driver->probe_order == order) {
1377 if (!cpu_dai->codec) {
1378 cpu_dai->dapm.card = card;
1379 if (!try_module_get(cpu_dai->dev->driver->owner))
1382 list_add(&cpu_dai->dapm.list, &card->dapm_list);
1385 if (cpu_dai->driver->probe) {
1386 ret = cpu_dai->driver->probe(cpu_dai);
1388 dev_err(cpu_dai->dev,
1389 "ASoC: failed to probe CPU DAI %s: %d\n",
1390 cpu_dai->name, ret);
1391 module_put(cpu_dai->dev->driver->owner);
1395 cpu_dai->probed = 1;
1396 /* mark cpu_dai as probed and add to card dai list */
1397 list_add(&cpu_dai->card_list, &card->dai_dev_list);
1400 /* probe the CODEC DAI */
1401 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
1402 if (codec_dai->driver->probe) {
1403 ret = codec_dai->driver->probe(codec_dai);
1405 dev_err(codec_dai->dev,
1406 "ASoC: failed to probe CODEC DAI %s: %d\n",
1407 codec_dai->name, ret);
1412 /* mark codec_dai as probed and add to card dai list */
1413 codec_dai->probed = 1;
1414 list_add(&codec_dai->card_list, &card->dai_dev_list);
1417 /* complete DAI probe during last probe */
1418 if (order != SND_SOC_COMP_ORDER_LAST)
1421 ret = soc_post_component_init(card, codec, num, 0);
1425 ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
1427 dev_warn(rtd->dev, "ASoC: failed to add pmdown_time sysfs: %d\n",
1430 if (cpu_dai->driver->compress_dai) {
1431 /*create compress_device"*/
1432 ret = soc_new_compress(rtd, num);
1434 dev_err(card->dev, "ASoC: can't create compress %s\n",
1435 dai_link->stream_name);
1440 if (!dai_link->params) {
1441 /* create the pcm */
1442 ret = soc_new_pcm(rtd, num);
1444 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1445 dai_link->stream_name, ret);
1449 INIT_DELAYED_WORK(&rtd->delayed_work,
1450 codec2codec_close_delayed_work);
1452 /* link the DAI widgets */
1453 play_w = codec_dai->playback_widget;
1454 capture_w = cpu_dai->capture_widget;
1455 if (play_w && capture_w) {
1456 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1459 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1460 play_w->name, capture_w->name, ret);
1465 play_w = cpu_dai->playback_widget;
1466 capture_w = codec_dai->capture_widget;
1467 if (play_w && capture_w) {
1468 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1471 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1472 play_w->name, capture_w->name, ret);
1479 /* add platform data for AC97 devices */
1480 if (rtd->codec_dai->driver->ac97_control)
1481 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1486 #ifdef CONFIG_SND_SOC_AC97_BUS
1487 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1491 /* Only instantiate AC97 if not already done by the adaptor
1492 * for the generic AC97 subsystem.
1494 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
1496 * It is possible that the AC97 device is already registered to
1497 * the device subsystem. This happens when the device is created
1498 * via snd_ac97_mixer(). Currently only SoC codec that does so
1499 * is the generic AC97 glue but others migh emerge.
1501 * In those cases we don't try to register the device again.
1503 if (!rtd->codec->ac97_created)
1506 ret = soc_ac97_dev_register(rtd->codec);
1508 dev_err(rtd->codec->dev,
1509 "ASoC: AC97 device register failed: %d\n", ret);
1513 rtd->codec->ac97_registered = 1;
1518 static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1520 if (codec->ac97_registered) {
1521 soc_ac97_dev_unregister(codec);
1522 codec->ac97_registered = 0;
1527 static int soc_check_aux_dev(struct snd_soc_card *card, int num)
1529 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1530 struct snd_soc_codec *codec;
1532 /* find CODEC from registered CODECs*/
1533 list_for_each_entry(codec, &codec_list, list) {
1534 if (!strcmp(codec->name, aux_dev->codec_name))
1538 dev_err(card->dev, "ASoC: %s not registered\n", aux_dev->codec_name);
1540 return -EPROBE_DEFER;
1543 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1545 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1546 struct snd_soc_codec *codec;
1549 /* find CODEC from registered CODECs*/
1550 list_for_each_entry(codec, &codec_list, list) {
1551 if (!strcmp(codec->name, aux_dev->codec_name)) {
1552 if (codec->probed) {
1554 "ASoC: codec already probed");
1561 /* codec not found */
1562 dev_err(card->dev, "ASoC: codec %s not found", aux_dev->codec_name);
1563 return -EPROBE_DEFER;
1566 ret = soc_probe_codec(card, codec);
1570 ret = soc_post_component_init(card, codec, num, 1);
1576 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1578 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1579 struct snd_soc_codec *codec = rtd->codec;
1581 /* unregister the rtd device */
1582 if (rtd->dev_registered) {
1583 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1584 device_unregister(rtd->dev);
1585 rtd->dev_registered = 0;
1588 if (codec && codec->probed)
1589 soc_remove_codec(codec);
1592 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec)
1596 if (codec->cache_init)
1599 ret = snd_soc_cache_init(codec);
1602 "ASoC: Failed to set cache compression type: %d\n",
1606 codec->cache_init = 1;
1610 static int snd_soc_instantiate_card(struct snd_soc_card *card)
1612 struct snd_soc_codec *codec;
1613 struct snd_soc_dai_link *dai_link;
1614 int ret, i, order, dai_fmt;
1616 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1619 for (i = 0; i < card->num_links; i++) {
1620 ret = soc_bind_dai_link(card, i);
1625 /* check aux_devs too */
1626 for (i = 0; i < card->num_aux_devs; i++) {
1627 ret = soc_check_aux_dev(card, i);
1632 /* initialize the register cache for each available codec */
1633 list_for_each_entry(codec, &codec_list, list) {
1634 if (codec->cache_init)
1636 ret = snd_soc_init_codec_cache(codec);
1641 /* card bind complete so register a sound card */
1642 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1643 card->owner, 0, &card->snd_card);
1646 "ASoC: can't create sound card for card %s: %d\n",
1650 card->snd_card->dev = card->dev;
1652 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1653 card->dapm.dev = card->dev;
1654 card->dapm.card = card;
1655 list_add(&card->dapm.list, &card->dapm_list);
1657 #ifdef CONFIG_DEBUG_FS
1658 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1661 #ifdef CONFIG_PM_SLEEP
1662 /* deferred resume work */
1663 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1666 if (card->dapm_widgets)
1667 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1668 card->num_dapm_widgets);
1670 /* initialise the sound card only once */
1672 ret = card->probe(card);
1674 goto card_probe_error;
1677 /* probe all components used by DAI links on this card */
1678 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1680 for (i = 0; i < card->num_links; i++) {
1681 ret = soc_probe_link_components(card, i, order);
1684 "ASoC: failed to instantiate card %d\n",
1691 /* probe all DAI links on this card */
1692 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1694 for (i = 0; i < card->num_links; i++) {
1695 ret = soc_probe_link_dais(card, i, order);
1698 "ASoC: failed to instantiate card %d\n",
1705 for (i = 0; i < card->num_aux_devs; i++) {
1706 ret = soc_probe_aux_dev(card, i);
1709 "ASoC: failed to add auxiliary devices %d\n",
1711 goto probe_aux_dev_err;
1715 snd_soc_dapm_link_dai_widgets(card);
1718 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1720 if (card->dapm_routes)
1721 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1722 card->num_dapm_routes);
1724 for (i = 0; i < card->num_links; i++) {
1725 dai_link = &card->dai_link[i];
1726 dai_fmt = dai_link->dai_fmt;
1729 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1731 if (ret != 0 && ret != -ENOTSUPP)
1732 dev_warn(card->rtd[i].codec_dai->dev,
1733 "ASoC: Failed to set DAI format: %d\n",
1737 /* If this is a regular CPU link there will be a platform */
1739 (dai_link->platform_name || dai_link->platform_of_node)) {
1740 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1742 if (ret != 0 && ret != -ENOTSUPP)
1743 dev_warn(card->rtd[i].cpu_dai->dev,
1744 "ASoC: Failed to set DAI format: %d\n",
1746 } else if (dai_fmt) {
1747 /* Flip the polarity for the "CPU" end */
1748 dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
1749 switch (dai_link->dai_fmt &
1750 SND_SOC_DAIFMT_MASTER_MASK) {
1751 case SND_SOC_DAIFMT_CBM_CFM:
1752 dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1754 case SND_SOC_DAIFMT_CBM_CFS:
1755 dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1757 case SND_SOC_DAIFMT_CBS_CFM:
1758 dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1760 case SND_SOC_DAIFMT_CBS_CFS:
1761 dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1765 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1767 if (ret != 0 && ret != -ENOTSUPP)
1768 dev_warn(card->rtd[i].cpu_dai->dev,
1769 "ASoC: Failed to set DAI format: %d\n",
1774 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1776 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1777 "%s", card->long_name ? card->long_name : card->name);
1778 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1779 "%s", card->driver_name ? card->driver_name : card->name);
1780 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1781 switch (card->snd_card->driver[i]) {
1787 if (!isalnum(card->snd_card->driver[i]))
1788 card->snd_card->driver[i] = '_';
1793 if (card->late_probe) {
1794 ret = card->late_probe(card);
1796 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
1798 goto probe_aux_dev_err;
1802 if (card->fully_routed)
1803 list_for_each_entry(codec, &card->codec_dev_list, card_list)
1804 snd_soc_dapm_auto_nc_codec_pins(codec);
1806 snd_soc_dapm_new_widgets(card);
1808 ret = snd_card_register(card->snd_card);
1810 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
1812 goto probe_aux_dev_err;
1815 #ifdef CONFIG_SND_SOC_AC97_BUS
1816 /* register any AC97 codecs */
1817 for (i = 0; i < card->num_rtd; i++) {
1818 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1821 "ASoC: failed to register AC97: %d\n", ret);
1823 soc_unregister_ac97_dai_link(card->rtd[i].codec);
1824 goto probe_aux_dev_err;
1829 card->instantiated = 1;
1830 snd_soc_dapm_sync(&card->dapm);
1831 mutex_unlock(&card->mutex);
1836 for (i = 0; i < card->num_aux_devs; i++)
1837 soc_remove_aux_dev(card, i);
1840 soc_remove_dai_links(card);
1846 snd_card_free(card->snd_card);
1849 mutex_unlock(&card->mutex);
1854 /* probes a new socdev */
1855 static int soc_probe(struct platform_device *pdev)
1857 struct snd_soc_card *card = platform_get_drvdata(pdev);
1860 * no card, so machine driver should be registering card
1861 * we should not be here in that case so ret error
1866 dev_warn(&pdev->dev,
1867 "ASoC: machine %s should use snd_soc_register_card()\n",
1870 /* Bodge while we unpick instantiation */
1871 card->dev = &pdev->dev;
1873 return snd_soc_register_card(card);
1876 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1880 /* make sure any delayed work runs */
1881 for (i = 0; i < card->num_rtd; i++) {
1882 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1883 flush_delayed_work(&rtd->delayed_work);
1886 /* remove auxiliary devices */
1887 for (i = 0; i < card->num_aux_devs; i++)
1888 soc_remove_aux_dev(card, i);
1890 /* remove and free each DAI */
1891 soc_remove_dai_links(card);
1893 soc_cleanup_card_debugfs(card);
1895 /* remove the card */
1899 snd_soc_dapm_free(&card->dapm);
1901 snd_card_free(card->snd_card);
1906 /* removes a socdev */
1907 static int soc_remove(struct platform_device *pdev)
1909 struct snd_soc_card *card = platform_get_drvdata(pdev);
1911 snd_soc_unregister_card(card);
1915 int snd_soc_poweroff(struct device *dev)
1917 struct snd_soc_card *card = dev_get_drvdata(dev);
1920 if (!card->instantiated)
1923 /* Flush out pmdown_time work - we actually do want to run it
1924 * now, we're shutting down so no imminent restart. */
1925 for (i = 0; i < card->num_rtd; i++) {
1926 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1927 flush_delayed_work(&rtd->delayed_work);
1930 snd_soc_dapm_shutdown(card);
1934 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
1936 const struct dev_pm_ops snd_soc_pm_ops = {
1937 .suspend = snd_soc_suspend,
1938 .resume = snd_soc_resume,
1939 .freeze = snd_soc_suspend,
1940 .thaw = snd_soc_resume,
1941 .poweroff = snd_soc_poweroff,
1942 .restore = snd_soc_resume,
1944 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
1946 /* ASoC platform driver */
1947 static struct platform_driver soc_driver = {
1949 .name = "soc-audio",
1950 .owner = THIS_MODULE,
1951 .pm = &snd_soc_pm_ops,
1954 .remove = soc_remove,
1958 * snd_soc_codec_volatile_register: Report if a register is volatile.
1960 * @codec: CODEC to query.
1961 * @reg: Register to query.
1963 * Boolean function indiciating if a CODEC register is volatile.
1965 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
1968 if (codec->volatile_register)
1969 return codec->volatile_register(codec, reg);
1973 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
1976 * snd_soc_codec_readable_register: Report if a register is readable.
1978 * @codec: CODEC to query.
1979 * @reg: Register to query.
1981 * Boolean function indicating if a CODEC register is readable.
1983 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
1986 if (codec->readable_register)
1987 return codec->readable_register(codec, reg);
1991 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
1994 * snd_soc_codec_writable_register: Report if a register is writable.
1996 * @codec: CODEC to query.
1997 * @reg: Register to query.
1999 * Boolean function indicating if a CODEC register is writable.
2001 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
2004 if (codec->writable_register)
2005 return codec->writable_register(codec, reg);
2009 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
2011 int snd_soc_platform_read(struct snd_soc_platform *platform,
2016 if (!platform->driver->read) {
2017 dev_err(platform->dev, "ASoC: platform has no read back\n");
2021 ret = platform->driver->read(platform, reg);
2022 dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
2023 trace_snd_soc_preg_read(platform, reg, ret);
2027 EXPORT_SYMBOL_GPL(snd_soc_platform_read);
2029 int snd_soc_platform_write(struct snd_soc_platform *platform,
2030 unsigned int reg, unsigned int val)
2032 if (!platform->driver->write) {
2033 dev_err(platform->dev, "ASoC: platform has no write back\n");
2037 dev_dbg(platform->dev, "write %x = %x\n", reg, val);
2038 trace_snd_soc_preg_write(platform, reg, val);
2039 return platform->driver->write(platform, reg, val);
2041 EXPORT_SYMBOL_GPL(snd_soc_platform_write);
2044 * snd_soc_new_ac97_codec - initailise AC97 device
2045 * @codec: audio codec
2046 * @ops: AC97 bus operations
2047 * @num: AC97 codec number
2049 * Initialises AC97 codec resources for use by ad-hoc devices only.
2051 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
2052 struct snd_ac97_bus_ops *ops, int num)
2054 mutex_lock(&codec->mutex);
2056 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2057 if (codec->ac97 == NULL) {
2058 mutex_unlock(&codec->mutex);
2062 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
2063 if (codec->ac97->bus == NULL) {
2066 mutex_unlock(&codec->mutex);
2070 codec->ac97->bus->ops = ops;
2071 codec->ac97->num = num;
2074 * Mark the AC97 device to be created by us. This way we ensure that the
2075 * device will be registered with the device subsystem later on.
2077 codec->ac97_created = 1;
2079 mutex_unlock(&codec->mutex);
2082 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
2084 static struct snd_ac97_reset_cfg snd_ac97_rst_cfg;
2086 static void snd_soc_ac97_warm_reset(struct snd_ac97 *ac97)
2088 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2090 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_warm_reset);
2092 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 1);
2096 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2098 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2102 static void snd_soc_ac97_reset(struct snd_ac97 *ac97)
2104 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2106 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_reset);
2108 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2109 gpio_direction_output(snd_ac97_rst_cfg.gpio_sdata, 0);
2110 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 0);
2114 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 1);
2116 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2120 static int snd_soc_ac97_parse_pinctl(struct device *dev,
2121 struct snd_ac97_reset_cfg *cfg)
2124 struct pinctrl_state *state;
2128 p = devm_pinctrl_get(dev);
2130 dev_err(dev, "Failed to get pinctrl\n");
2135 state = pinctrl_lookup_state(p, "ac97-reset");
2136 if (IS_ERR(state)) {
2137 dev_err(dev, "Can't find pinctrl state ac97-reset\n");
2138 return PTR_RET(state);
2140 cfg->pstate_reset = state;
2142 state = pinctrl_lookup_state(p, "ac97-warm-reset");
2143 if (IS_ERR(state)) {
2144 dev_err(dev, "Can't find pinctrl state ac97-warm-reset\n");
2145 return PTR_RET(state);
2147 cfg->pstate_warm_reset = state;
2149 state = pinctrl_lookup_state(p, "ac97-running");
2150 if (IS_ERR(state)) {
2151 dev_err(dev, "Can't find pinctrl state ac97-running\n");
2152 return PTR_RET(state);
2154 cfg->pstate_run = state;
2156 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 0);
2158 dev_err(dev, "Can't find ac97-sync gpio\n");
2161 ret = devm_gpio_request(dev, gpio, "AC97 link sync");
2163 dev_err(dev, "Failed requesting ac97-sync gpio\n");
2166 cfg->gpio_sync = gpio;
2168 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 1);
2170 dev_err(dev, "Can't find ac97-sdata gpio %d\n", gpio);
2173 ret = devm_gpio_request(dev, gpio, "AC97 link sdata");
2175 dev_err(dev, "Failed requesting ac97-sdata gpio\n");
2178 cfg->gpio_sdata = gpio;
2180 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 2);
2182 dev_err(dev, "Can't find ac97-reset gpio\n");
2185 ret = devm_gpio_request(dev, gpio, "AC97 link reset");
2187 dev_err(dev, "Failed requesting ac97-reset gpio\n");
2190 cfg->gpio_reset = gpio;
2195 struct snd_ac97_bus_ops *soc_ac97_ops;
2196 EXPORT_SYMBOL_GPL(soc_ac97_ops);
2198 int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops)
2200 if (ops == soc_ac97_ops)
2203 if (soc_ac97_ops && ops)
2210 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops);
2213 * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions
2215 * This function sets the reset and warm_reset properties of ops and parses
2216 * the device node of pdev to get pinctrl states and gpio numbers to use.
2218 int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops,
2219 struct platform_device *pdev)
2221 struct device *dev = &pdev->dev;
2222 struct snd_ac97_reset_cfg cfg;
2225 ret = snd_soc_ac97_parse_pinctl(dev, &cfg);
2229 ret = snd_soc_set_ac97_ops(ops);
2233 ops->warm_reset = snd_soc_ac97_warm_reset;
2234 ops->reset = snd_soc_ac97_reset;
2236 snd_ac97_rst_cfg = cfg;
2239 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset);
2242 * snd_soc_free_ac97_codec - free AC97 codec device
2243 * @codec: audio codec
2245 * Frees AC97 codec device resources.
2247 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
2249 mutex_lock(&codec->mutex);
2250 #ifdef CONFIG_SND_SOC_AC97_BUS
2251 soc_unregister_ac97_dai_link(codec);
2253 kfree(codec->ac97->bus);
2256 codec->ac97_created = 0;
2257 mutex_unlock(&codec->mutex);
2259 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
2261 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
2265 ret = codec->read(codec, reg);
2266 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
2267 trace_snd_soc_reg_read(codec, reg, ret);
2271 EXPORT_SYMBOL_GPL(snd_soc_read);
2273 unsigned int snd_soc_write(struct snd_soc_codec *codec,
2274 unsigned int reg, unsigned int val)
2276 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
2277 trace_snd_soc_reg_write(codec, reg, val);
2278 return codec->write(codec, reg, val);
2280 EXPORT_SYMBOL_GPL(snd_soc_write);
2283 * snd_soc_update_bits - update codec register bits
2284 * @codec: audio codec
2285 * @reg: codec register
2286 * @mask: register mask
2289 * Writes new register value.
2291 * Returns 1 for change, 0 for no change, or negative error code.
2293 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
2294 unsigned int mask, unsigned int value)
2297 unsigned int old, new;
2300 if (codec->using_regmap) {
2301 ret = regmap_update_bits_check(codec->control_data, reg,
2302 mask, value, &change);
2304 ret = snd_soc_read(codec, reg);
2309 new = (old & ~mask) | (value & mask);
2310 change = old != new;
2312 ret = snd_soc_write(codec, reg, new);
2320 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
2323 * snd_soc_update_bits_locked - update codec register bits
2324 * @codec: audio codec
2325 * @reg: codec register
2326 * @mask: register mask
2329 * Writes new register value, and takes the codec mutex.
2331 * Returns 1 for change else 0.
2333 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
2334 unsigned short reg, unsigned int mask,
2339 mutex_lock(&codec->mutex);
2340 change = snd_soc_update_bits(codec, reg, mask, value);
2341 mutex_unlock(&codec->mutex);
2345 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
2348 * snd_soc_test_bits - test register for change
2349 * @codec: audio codec
2350 * @reg: codec register
2351 * @mask: register mask
2354 * Tests a register with a new value and checks if the new value is
2355 * different from the old value.
2357 * Returns 1 for change else 0.
2359 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
2360 unsigned int mask, unsigned int value)
2363 unsigned int old, new;
2365 old = snd_soc_read(codec, reg);
2366 new = (old & ~mask) | value;
2367 change = old != new;
2371 EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2374 * snd_soc_cnew - create new control
2375 * @_template: control template
2376 * @data: control private data
2377 * @long_name: control long name
2378 * @prefix: control name prefix
2380 * Create a new mixer control from a template control.
2382 * Returns 0 for success, else error.
2384 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2385 void *data, const char *long_name,
2388 struct snd_kcontrol_new template;
2389 struct snd_kcontrol *kcontrol;
2392 memcpy(&template, _template, sizeof(template));
2396 long_name = template.name;
2399 name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
2403 template.name = name;
2405 template.name = long_name;
2408 kcontrol = snd_ctl_new1(&template, data);
2414 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2416 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2417 const struct snd_kcontrol_new *controls, int num_controls,
2418 const char *prefix, void *data)
2422 for (i = 0; i < num_controls; i++) {
2423 const struct snd_kcontrol_new *control = &controls[i];
2424 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2425 control->name, prefix));
2427 dev_err(dev, "ASoC: Failed to add %s: %d\n",
2428 control->name, err);
2436 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
2439 struct snd_card *card = soc_card->snd_card;
2440 struct snd_kcontrol *kctl;
2442 if (unlikely(!name))
2445 list_for_each_entry(kctl, &card->controls, list)
2446 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
2450 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
2453 * snd_soc_add_codec_controls - add an array of controls to a codec.
2454 * Convenience function to add a list of controls. Many codecs were
2455 * duplicating this code.
2457 * @codec: codec to add controls to
2458 * @controls: array of controls to add
2459 * @num_controls: number of elements in the array
2461 * Return 0 for success, else error.
2463 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2464 const struct snd_kcontrol_new *controls, int num_controls)
2466 struct snd_card *card = codec->card->snd_card;
2468 return snd_soc_add_controls(card, codec->dev, controls, num_controls,
2469 codec->name_prefix, codec);
2471 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2474 * snd_soc_add_platform_controls - add an array of controls to a platform.
2475 * Convenience function to add a list of controls.
2477 * @platform: platform to add controls to
2478 * @controls: array of controls to add
2479 * @num_controls: number of elements in the array
2481 * Return 0 for success, else error.
2483 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2484 const struct snd_kcontrol_new *controls, int num_controls)
2486 struct snd_card *card = platform->card->snd_card;
2488 return snd_soc_add_controls(card, platform->dev, controls, num_controls,
2491 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2494 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2495 * Convenience function to add a list of controls.
2497 * @soc_card: SoC card to add controls to
2498 * @controls: array of controls to add
2499 * @num_controls: number of elements in the array
2501 * Return 0 for success, else error.
2503 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2504 const struct snd_kcontrol_new *controls, int num_controls)
2506 struct snd_card *card = soc_card->snd_card;
2508 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2511 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2514 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2515 * Convienience function to add a list of controls.
2517 * @dai: DAI to add controls to
2518 * @controls: array of controls to add
2519 * @num_controls: number of elements in the array
2521 * Return 0 for success, else error.
2523 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2524 const struct snd_kcontrol_new *controls, int num_controls)
2526 struct snd_card *card = dai->card->snd_card;
2528 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2531 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2534 * snd_soc_info_enum_double - enumerated double mixer info callback
2535 * @kcontrol: mixer control
2536 * @uinfo: control element information
2538 * Callback to provide information about a double enumerated
2541 * Returns 0 for success.
2543 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2544 struct snd_ctl_elem_info *uinfo)
2546 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2548 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2549 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2550 uinfo->value.enumerated.items = e->max;
2552 if (uinfo->value.enumerated.item > e->max - 1)
2553 uinfo->value.enumerated.item = e->max - 1;
2554 strcpy(uinfo->value.enumerated.name,
2555 e->texts[uinfo->value.enumerated.item]);
2558 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2561 * snd_soc_get_enum_double - enumerated double mixer get callback
2562 * @kcontrol: mixer control
2563 * @ucontrol: control element information
2565 * Callback to get the value of a double enumerated mixer.
2567 * Returns 0 for success.
2569 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2570 struct snd_ctl_elem_value *ucontrol)
2572 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2573 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2576 val = snd_soc_read(codec, e->reg);
2577 ucontrol->value.enumerated.item[0]
2578 = (val >> e->shift_l) & e->mask;
2579 if (e->shift_l != e->shift_r)
2580 ucontrol->value.enumerated.item[1] =
2581 (val >> e->shift_r) & e->mask;
2585 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2588 * snd_soc_put_enum_double - enumerated double mixer put callback
2589 * @kcontrol: mixer control
2590 * @ucontrol: control element information
2592 * Callback to set the value of a double enumerated mixer.
2594 * Returns 0 for success.
2596 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2597 struct snd_ctl_elem_value *ucontrol)
2599 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2600 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2604 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2606 val = ucontrol->value.enumerated.item[0] << e->shift_l;
2607 mask = e->mask << e->shift_l;
2608 if (e->shift_l != e->shift_r) {
2609 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2611 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2612 mask |= e->mask << e->shift_r;
2615 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2617 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2620 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2621 * @kcontrol: mixer control
2622 * @ucontrol: control element information
2624 * Callback to get the value of a double semi enumerated mixer.
2626 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2627 * used for handling bitfield coded enumeration for example.
2629 * Returns 0 for success.
2631 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
2632 struct snd_ctl_elem_value *ucontrol)
2634 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2635 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2636 unsigned int reg_val, val, mux;
2638 reg_val = snd_soc_read(codec, e->reg);
2639 val = (reg_val >> e->shift_l) & e->mask;
2640 for (mux = 0; mux < e->max; mux++) {
2641 if (val == e->values[mux])
2644 ucontrol->value.enumerated.item[0] = mux;
2645 if (e->shift_l != e->shift_r) {
2646 val = (reg_val >> e->shift_r) & e->mask;
2647 for (mux = 0; mux < e->max; mux++) {
2648 if (val == e->values[mux])
2651 ucontrol->value.enumerated.item[1] = mux;
2656 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
2659 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2660 * @kcontrol: mixer control
2661 * @ucontrol: control element information
2663 * Callback to set the value of a double semi enumerated mixer.
2665 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2666 * used for handling bitfield coded enumeration for example.
2668 * Returns 0 for success.
2670 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
2671 struct snd_ctl_elem_value *ucontrol)
2673 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2674 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2678 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2680 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2681 mask = e->mask << e->shift_l;
2682 if (e->shift_l != e->shift_r) {
2683 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2685 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2686 mask |= e->mask << e->shift_r;
2689 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2691 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
2694 * snd_soc_info_volsw - single mixer info callback
2695 * @kcontrol: mixer control
2696 * @uinfo: control element information
2698 * Callback to provide information about a single mixer control, or a double
2699 * mixer control that spans 2 registers.
2701 * Returns 0 for success.
2703 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2704 struct snd_ctl_elem_info *uinfo)
2706 struct soc_mixer_control *mc =
2707 (struct soc_mixer_control *)kcontrol->private_value;
2710 if (!mc->platform_max)
2711 mc->platform_max = mc->max;
2712 platform_max = mc->platform_max;
2714 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2715 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2717 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2719 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2720 uinfo->value.integer.min = 0;
2721 uinfo->value.integer.max = platform_max;
2724 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2727 * snd_soc_get_volsw - single mixer get callback
2728 * @kcontrol: mixer control
2729 * @ucontrol: control element information
2731 * Callback to get the value of a single mixer control, or a double mixer
2732 * control that spans 2 registers.
2734 * Returns 0 for success.
2736 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2737 struct snd_ctl_elem_value *ucontrol)
2739 struct soc_mixer_control *mc =
2740 (struct soc_mixer_control *)kcontrol->private_value;
2741 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2742 unsigned int reg = mc->reg;
2743 unsigned int reg2 = mc->rreg;
2744 unsigned int shift = mc->shift;
2745 unsigned int rshift = mc->rshift;
2747 unsigned int mask = (1 << fls(max)) - 1;
2748 unsigned int invert = mc->invert;
2750 ucontrol->value.integer.value[0] =
2751 (snd_soc_read(codec, reg) >> shift) & mask;
2753 ucontrol->value.integer.value[0] =
2754 max - ucontrol->value.integer.value[0];
2756 if (snd_soc_volsw_is_stereo(mc)) {
2758 ucontrol->value.integer.value[1] =
2759 (snd_soc_read(codec, reg) >> rshift) & mask;
2761 ucontrol->value.integer.value[1] =
2762 (snd_soc_read(codec, reg2) >> shift) & mask;
2764 ucontrol->value.integer.value[1] =
2765 max - ucontrol->value.integer.value[1];
2770 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2773 * snd_soc_put_volsw - single mixer put callback
2774 * @kcontrol: mixer control
2775 * @ucontrol: control element information
2777 * Callback to set the value of a single mixer control, or a double mixer
2778 * control that spans 2 registers.
2780 * Returns 0 for success.
2782 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2783 struct snd_ctl_elem_value *ucontrol)
2785 struct soc_mixer_control *mc =
2786 (struct soc_mixer_control *)kcontrol->private_value;
2787 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2788 unsigned int reg = mc->reg;
2789 unsigned int reg2 = mc->rreg;
2790 unsigned int shift = mc->shift;
2791 unsigned int rshift = mc->rshift;
2793 unsigned int mask = (1 << fls(max)) - 1;
2794 unsigned int invert = mc->invert;
2797 unsigned int val2 = 0;
2798 unsigned int val, val_mask;
2800 val = (ucontrol->value.integer.value[0] & mask);
2803 val_mask = mask << shift;
2805 if (snd_soc_volsw_is_stereo(mc)) {
2806 val2 = (ucontrol->value.integer.value[1] & mask);
2810 val_mask |= mask << rshift;
2811 val |= val2 << rshift;
2813 val2 = val2 << shift;
2817 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2822 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2826 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2829 * snd_soc_get_volsw_sx - single mixer get callback
2830 * @kcontrol: mixer control
2831 * @ucontrol: control element information
2833 * Callback to get the value of a single mixer control, or a double mixer
2834 * control that spans 2 registers.
2836 * Returns 0 for success.
2838 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
2839 struct snd_ctl_elem_value *ucontrol)
2841 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2842 struct soc_mixer_control *mc =
2843 (struct soc_mixer_control *)kcontrol->private_value;
2845 unsigned int reg = mc->reg;
2846 unsigned int reg2 = mc->rreg;
2847 unsigned int shift = mc->shift;
2848 unsigned int rshift = mc->rshift;
2851 int mask = (1 << (fls(min + max) - 1)) - 1;
2853 ucontrol->value.integer.value[0] =
2854 ((snd_soc_read(codec, reg) >> shift) - min) & mask;
2856 if (snd_soc_volsw_is_stereo(mc))
2857 ucontrol->value.integer.value[1] =
2858 ((snd_soc_read(codec, reg2) >> rshift) - min) & mask;
2862 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
2865 * snd_soc_put_volsw_sx - double mixer set callback
2866 * @kcontrol: mixer control
2867 * @uinfo: control element information
2869 * Callback to set the value of a double mixer control that spans 2 registers.
2871 * Returns 0 for success.
2873 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
2874 struct snd_ctl_elem_value *ucontrol)
2876 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2877 struct soc_mixer_control *mc =
2878 (struct soc_mixer_control *)kcontrol->private_value;
2880 unsigned int reg = mc->reg;
2881 unsigned int reg2 = mc->rreg;
2882 unsigned int shift = mc->shift;
2883 unsigned int rshift = mc->rshift;
2886 int mask = (1 << (fls(min + max) - 1)) - 1;
2888 unsigned short val, val_mask, val2 = 0;
2890 val_mask = mask << shift;
2891 val = (ucontrol->value.integer.value[0] + min) & mask;
2894 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2898 if (snd_soc_volsw_is_stereo(mc)) {
2899 val_mask = mask << rshift;
2900 val2 = (ucontrol->value.integer.value[1] + min) & mask;
2901 val2 = val2 << rshift;
2903 if (snd_soc_update_bits_locked(codec, reg2, val_mask, val2))
2908 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
2911 * snd_soc_info_volsw_s8 - signed mixer info callback
2912 * @kcontrol: mixer control
2913 * @uinfo: control element information
2915 * Callback to provide information about a signed mixer control.
2917 * Returns 0 for success.
2919 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2920 struct snd_ctl_elem_info *uinfo)
2922 struct soc_mixer_control *mc =
2923 (struct soc_mixer_control *)kcontrol->private_value;
2927 if (!mc->platform_max)
2928 mc->platform_max = mc->max;
2929 platform_max = mc->platform_max;
2931 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2933 uinfo->value.integer.min = 0;
2934 uinfo->value.integer.max = platform_max - min;
2937 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2940 * snd_soc_get_volsw_s8 - signed mixer get callback
2941 * @kcontrol: mixer control
2942 * @ucontrol: control element information
2944 * Callback to get the value of a signed mixer control.
2946 * Returns 0 for success.
2948 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2949 struct snd_ctl_elem_value *ucontrol)
2951 struct soc_mixer_control *mc =
2952 (struct soc_mixer_control *)kcontrol->private_value;
2953 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2954 unsigned int reg = mc->reg;
2956 int val = snd_soc_read(codec, reg);
2958 ucontrol->value.integer.value[0] =
2959 ((signed char)(val & 0xff))-min;
2960 ucontrol->value.integer.value[1] =
2961 ((signed char)((val >> 8) & 0xff))-min;
2964 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2967 * snd_soc_put_volsw_sgn - signed mixer put callback
2968 * @kcontrol: mixer control
2969 * @ucontrol: control element information
2971 * Callback to set the value of a signed mixer control.
2973 * Returns 0 for success.
2975 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2976 struct snd_ctl_elem_value *ucontrol)
2978 struct soc_mixer_control *mc =
2979 (struct soc_mixer_control *)kcontrol->private_value;
2980 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2981 unsigned int reg = mc->reg;
2985 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2986 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2988 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
2990 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2993 * snd_soc_info_volsw_range - single mixer info callback with range.
2994 * @kcontrol: mixer control
2995 * @uinfo: control element information
2997 * Callback to provide information, within a range, about a single
3000 * returns 0 for success.
3002 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
3003 struct snd_ctl_elem_info *uinfo)
3005 struct soc_mixer_control *mc =
3006 (struct soc_mixer_control *)kcontrol->private_value;
3010 if (!mc->platform_max)
3011 mc->platform_max = mc->max;
3012 platform_max = mc->platform_max;
3014 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3015 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
3016 uinfo->value.integer.min = 0;
3017 uinfo->value.integer.max = platform_max - min;
3021 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
3024 * snd_soc_put_volsw_range - single mixer put value callback with range.
3025 * @kcontrol: mixer control
3026 * @ucontrol: control element information
3028 * Callback to set the value, within a range, for a single mixer control.
3030 * Returns 0 for success.
3032 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
3033 struct snd_ctl_elem_value *ucontrol)
3035 struct soc_mixer_control *mc =
3036 (struct soc_mixer_control *)kcontrol->private_value;
3037 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3038 unsigned int reg = mc->reg;
3039 unsigned int rreg = mc->rreg;
3040 unsigned int shift = mc->shift;
3043 unsigned int mask = (1 << fls(max)) - 1;
3044 unsigned int invert = mc->invert;
3045 unsigned int val, val_mask;
3048 val = ((ucontrol->value.integer.value[0] + min) & mask);
3051 val_mask = mask << shift;
3054 ret = snd_soc_update_bits_locked(codec, reg, val_mask, val);
3058 if (snd_soc_volsw_is_stereo(mc)) {
3059 val = ((ucontrol->value.integer.value[1] + min) & mask);
3062 val_mask = mask << shift;
3065 ret = snd_soc_update_bits_locked(codec, rreg, val_mask, val);
3070 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
3073 * snd_soc_get_volsw_range - single mixer get callback with range
3074 * @kcontrol: mixer control
3075 * @ucontrol: control element information
3077 * Callback to get the value, within a range, of a single mixer control.
3079 * Returns 0 for success.
3081 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
3082 struct snd_ctl_elem_value *ucontrol)
3084 struct soc_mixer_control *mc =
3085 (struct soc_mixer_control *)kcontrol->private_value;
3086 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3087 unsigned int reg = mc->reg;
3088 unsigned int rreg = mc->rreg;
3089 unsigned int shift = mc->shift;
3092 unsigned int mask = (1 << fls(max)) - 1;
3093 unsigned int invert = mc->invert;
3095 ucontrol->value.integer.value[0] =
3096 (snd_soc_read(codec, reg) >> shift) & mask;
3098 ucontrol->value.integer.value[0] =
3099 max - ucontrol->value.integer.value[0];
3100 ucontrol->value.integer.value[0] =
3101 ucontrol->value.integer.value[0] - min;
3103 if (snd_soc_volsw_is_stereo(mc)) {
3104 ucontrol->value.integer.value[1] =
3105 (snd_soc_read(codec, rreg) >> shift) & mask;
3107 ucontrol->value.integer.value[1] =
3108 max - ucontrol->value.integer.value[1];
3109 ucontrol->value.integer.value[1] =
3110 ucontrol->value.integer.value[1] - min;
3115 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
3118 * snd_soc_limit_volume - Set new limit to an existing volume control.
3120 * @codec: where to look for the control
3121 * @name: Name of the control
3122 * @max: new maximum limit
3124 * Return 0 for success, else error.
3126 int snd_soc_limit_volume(struct snd_soc_codec *codec,
3127 const char *name, int max)
3129 struct snd_card *card = codec->card->snd_card;
3130 struct snd_kcontrol *kctl;
3131 struct soc_mixer_control *mc;
3135 /* Sanity check for name and max */
3136 if (unlikely(!name || max <= 0))
3139 list_for_each_entry(kctl, &card->controls, list) {
3140 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
3146 mc = (struct soc_mixer_control *)kctl->private_value;
3147 if (max <= mc->max) {
3148 mc->platform_max = max;
3154 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
3156 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
3157 struct snd_ctl_elem_info *uinfo)
3159 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3160 struct soc_bytes *params = (void *)kcontrol->private_value;
3162 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
3163 uinfo->count = params->num_regs * codec->val_bytes;
3167 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
3169 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
3170 struct snd_ctl_elem_value *ucontrol)
3172 struct soc_bytes *params = (void *)kcontrol->private_value;
3173 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3176 if (codec->using_regmap)
3177 ret = regmap_raw_read(codec->control_data, params->base,
3178 ucontrol->value.bytes.data,
3179 params->num_regs * codec->val_bytes);
3183 /* Hide any masked bytes to ensure consistent data reporting */
3184 if (ret == 0 && params->mask) {
3185 switch (codec->val_bytes) {
3187 ucontrol->value.bytes.data[0] &= ~params->mask;
3190 ((u16 *)(&ucontrol->value.bytes.data))[0]
3194 ((u32 *)(&ucontrol->value.bytes.data))[0]
3204 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
3206 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
3207 struct snd_ctl_elem_value *ucontrol)
3209 struct soc_bytes *params = (void *)kcontrol->private_value;
3210 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3215 if (!codec->using_regmap)
3218 len = params->num_regs * codec->val_bytes;
3220 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
3225 * If we've got a mask then we need to preserve the register
3226 * bits. We shouldn't modify the incoming data so take a
3230 ret = regmap_read(codec->control_data, params->base, &val);
3234 val &= params->mask;
3236 switch (codec->val_bytes) {
3238 ((u8 *)data)[0] &= ~params->mask;
3239 ((u8 *)data)[0] |= val;
3242 ((u16 *)data)[0] &= cpu_to_be16(~params->mask);
3243 ((u16 *)data)[0] |= cpu_to_be16(val);
3246 ((u32 *)data)[0] &= cpu_to_be32(~params->mask);
3247 ((u32 *)data)[0] |= cpu_to_be32(val);
3255 ret = regmap_raw_write(codec->control_data, params->base,
3263 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
3266 * snd_soc_info_xr_sx - signed multi register info callback
3267 * @kcontrol: mreg control
3268 * @uinfo: control element information
3270 * Callback to provide information of a control that can
3271 * span multiple codec registers which together
3272 * forms a single signed value in a MSB/LSB manner.
3274 * Returns 0 for success.
3276 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
3277 struct snd_ctl_elem_info *uinfo)
3279 struct soc_mreg_control *mc =
3280 (struct soc_mreg_control *)kcontrol->private_value;
3281 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3283 uinfo->value.integer.min = mc->min;
3284 uinfo->value.integer.max = mc->max;
3288 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
3291 * snd_soc_get_xr_sx - signed multi register get callback
3292 * @kcontrol: mreg control
3293 * @ucontrol: control element information
3295 * Callback to get the value of a control that can span
3296 * multiple codec registers which together forms a single
3297 * signed value in a MSB/LSB manner. The control supports
3298 * specifying total no of bits used to allow for bitfields
3299 * across the multiple codec registers.
3301 * Returns 0 for success.
3303 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
3304 struct snd_ctl_elem_value *ucontrol)
3306 struct soc_mreg_control *mc =
3307 (struct soc_mreg_control *)kcontrol->private_value;
3308 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3309 unsigned int regbase = mc->regbase;
3310 unsigned int regcount = mc->regcount;
3311 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3312 unsigned int regwmask = (1<<regwshift)-1;
3313 unsigned int invert = mc->invert;
3314 unsigned long mask = (1UL<<mc->nbits)-1;
3318 unsigned long regval;
3321 for (i = 0; i < regcount; i++) {
3322 regval = snd_soc_read(codec, regbase+i) & regwmask;
3323 val |= regval << (regwshift*(regcount-i-1));
3326 if (min < 0 && val > max)
3330 ucontrol->value.integer.value[0] = val;
3334 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
3337 * snd_soc_put_xr_sx - signed multi register get callback
3338 * @kcontrol: mreg control
3339 * @ucontrol: control element information
3341 * Callback to set the value of a control that can span
3342 * multiple codec registers which together forms a single
3343 * signed value in a MSB/LSB manner. The control supports
3344 * specifying total no of bits used to allow for bitfields
3345 * across the multiple codec registers.
3347 * Returns 0 for success.
3349 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
3350 struct snd_ctl_elem_value *ucontrol)
3352 struct soc_mreg_control *mc =
3353 (struct soc_mreg_control *)kcontrol->private_value;
3354 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3355 unsigned int regbase = mc->regbase;
3356 unsigned int regcount = mc->regcount;
3357 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3358 unsigned int regwmask = (1<<regwshift)-1;
3359 unsigned int invert = mc->invert;
3360 unsigned long mask = (1UL<<mc->nbits)-1;
3362 long val = ucontrol->value.integer.value[0];
3363 unsigned int i, regval, regmask;
3369 for (i = 0; i < regcount; i++) {
3370 regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
3371 regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
3372 err = snd_soc_update_bits_locked(codec, regbase+i,
3380 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
3383 * snd_soc_get_strobe - strobe get callback
3384 * @kcontrol: mixer control
3385 * @ucontrol: control element information
3387 * Callback get the value of a strobe mixer control.
3389 * Returns 0 for success.
3391 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
3392 struct snd_ctl_elem_value *ucontrol)
3394 struct soc_mixer_control *mc =
3395 (struct soc_mixer_control *)kcontrol->private_value;
3396 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3397 unsigned int reg = mc->reg;
3398 unsigned int shift = mc->shift;
3399 unsigned int mask = 1 << shift;
3400 unsigned int invert = mc->invert != 0;
3401 unsigned int val = snd_soc_read(codec, reg) & mask;
3403 if (shift != 0 && val != 0)
3405 ucontrol->value.enumerated.item[0] = val ^ invert;
3409 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
3412 * snd_soc_put_strobe - strobe put callback
3413 * @kcontrol: mixer control
3414 * @ucontrol: control element information
3416 * Callback strobe a register bit to high then low (or the inverse)
3417 * in one pass of a single mixer enum control.
3419 * Returns 1 for success.
3421 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
3422 struct snd_ctl_elem_value *ucontrol)
3424 struct soc_mixer_control *mc =
3425 (struct soc_mixer_control *)kcontrol->private_value;
3426 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3427 unsigned int reg = mc->reg;
3428 unsigned int shift = mc->shift;
3429 unsigned int mask = 1 << shift;
3430 unsigned int invert = mc->invert != 0;
3431 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
3432 unsigned int val1 = (strobe ^ invert) ? mask : 0;
3433 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
3436 err = snd_soc_update_bits_locked(codec, reg, mask, val1);
3440 err = snd_soc_update_bits_locked(codec, reg, mask, val2);
3443 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);
3446 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3448 * @clk_id: DAI specific clock ID
3449 * @freq: new clock frequency in Hz
3450 * @dir: new clock direction - input/output.
3452 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3454 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
3455 unsigned int freq, int dir)
3457 if (dai->driver && dai->driver->ops->set_sysclk)
3458 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
3459 else if (dai->codec && dai->codec->driver->set_sysclk)
3460 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
3465 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
3468 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3470 * @clk_id: DAI specific clock ID
3471 * @source: Source for the clock
3472 * @freq: new clock frequency in Hz
3473 * @dir: new clock direction - input/output.
3475 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3477 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
3478 int source, unsigned int freq, int dir)
3480 if (codec->driver->set_sysclk)
3481 return codec->driver->set_sysclk(codec, clk_id, source,
3486 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
3489 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3491 * @div_id: DAI specific clock divider ID
3492 * @div: new clock divisor.
3494 * Configures the clock dividers. This is used to derive the best DAI bit and
3495 * frame clocks from the system or master clock. It's best to set the DAI bit
3496 * and frame clocks as low as possible to save system power.
3498 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
3499 int div_id, int div)
3501 if (dai->driver && dai->driver->ops->set_clkdiv)
3502 return dai->driver->ops->set_clkdiv(dai, div_id, div);
3506 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
3509 * snd_soc_dai_set_pll - configure DAI PLL.
3511 * @pll_id: DAI specific PLL ID
3512 * @source: DAI specific source for the PLL
3513 * @freq_in: PLL input clock frequency in Hz
3514 * @freq_out: requested PLL output clock frequency in Hz
3516 * Configures and enables PLL to generate output clock based on input clock.
3518 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
3519 unsigned int freq_in, unsigned int freq_out)
3521 if (dai->driver && dai->driver->ops->set_pll)
3522 return dai->driver->ops->set_pll(dai, pll_id, source,
3524 else if (dai->codec && dai->codec->driver->set_pll)
3525 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
3530 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
3533 * snd_soc_codec_set_pll - configure codec PLL.
3535 * @pll_id: DAI specific PLL ID
3536 * @source: DAI specific source for the PLL
3537 * @freq_in: PLL input clock frequency in Hz
3538 * @freq_out: requested PLL output clock frequency in Hz
3540 * Configures and enables PLL to generate output clock based on input clock.
3542 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
3543 unsigned int freq_in, unsigned int freq_out)
3545 if (codec->driver->set_pll)
3546 return codec->driver->set_pll(codec, pll_id, source,
3551 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
3554 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
3556 * @ratio Ratio of BCLK to Sample rate.
3558 * Configures the DAI for a preset BCLK to sample rate ratio.
3560 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
3562 if (dai->driver && dai->driver->ops->set_bclk_ratio)
3563 return dai->driver->ops->set_bclk_ratio(dai, ratio);
3567 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);
3570 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3572 * @fmt: SND_SOC_DAIFMT_ format value.
3574 * Configures the DAI hardware format and clocking.
3576 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
3578 if (dai->driver == NULL)
3580 if (dai->driver->ops->set_fmt == NULL)
3582 return dai->driver->ops->set_fmt(dai, fmt);
3584 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
3587 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3589 * @tx_mask: bitmask representing active TX slots.
3590 * @rx_mask: bitmask representing active RX slots.
3591 * @slots: Number of slots in use.
3592 * @slot_width: Width in bits for each slot.
3594 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3597 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
3598 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3600 if (dai->driver && dai->driver->ops->set_tdm_slot)
3601 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3606 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3609 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3611 * @tx_num: how many TX channels
3612 * @tx_slot: pointer to an array which imply the TX slot number channel
3614 * @rx_num: how many RX channels
3615 * @rx_slot: pointer to an array which imply the RX slot number channel
3618 * configure the relationship between channel number and TDM slot number.
3620 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3621 unsigned int tx_num, unsigned int *tx_slot,
3622 unsigned int rx_num, unsigned int *rx_slot)
3624 if (dai->driver && dai->driver->ops->set_channel_map)
3625 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3630 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3633 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3635 * @tristate: tristate enable
3637 * Tristates the DAI so that others can use it.
3639 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3641 if (dai->driver && dai->driver->ops->set_tristate)
3642 return dai->driver->ops->set_tristate(dai, tristate);
3646 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3649 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3651 * @mute: mute enable
3652 * @direction: stream to mute
3654 * Mutes the DAI DAC.
3656 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
3662 if (dai->driver->ops->mute_stream)
3663 return dai->driver->ops->mute_stream(dai, mute, direction);
3664 else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
3665 dai->driver->ops->digital_mute)
3666 return dai->driver->ops->digital_mute(dai, mute);
3670 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3673 * snd_soc_register_card - Register a card with the ASoC core
3675 * @card: Card to register
3678 int snd_soc_register_card(struct snd_soc_card *card)
3682 if (!card->name || !card->dev)
3685 for (i = 0; i < card->num_links; i++) {
3686 struct snd_soc_dai_link *link = &card->dai_link[i];
3689 * Codec must be specified by 1 of name or OF node,
3690 * not both or neither.
3692 if (!!link->codec_name == !!link->codec_of_node) {
3694 "ASoC: Neither/both codec name/of_node are set for %s\n",
3698 /* Codec DAI name must be specified */
3699 if (!link->codec_dai_name) {
3701 "ASoC: codec_dai_name not set for %s\n",
3707 * Platform may be specified by either name or OF node, but
3708 * can be left unspecified, and a dummy platform will be used.
3710 if (link->platform_name && link->platform_of_node) {
3712 "ASoC: Both platform name/of_node are set for %s\n",
3718 * CPU device may be specified by either name or OF node, but
3719 * can be left unspecified, and will be matched based on DAI
3722 if (link->cpu_name && link->cpu_of_node) {
3724 "ASoC: Neither/both cpu name/of_node are set for %s\n",
3729 * At least one of CPU DAI name or CPU device name/node must be
3732 if (!link->cpu_dai_name &&
3733 !(link->cpu_name || link->cpu_of_node)) {
3735 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
3741 dev_set_drvdata(card->dev, card);
3743 snd_soc_initialize_card_lists(card);
3745 soc_init_card_debugfs(card);
3747 card->rtd = devm_kzalloc(card->dev,
3748 sizeof(struct snd_soc_pcm_runtime) *
3749 (card->num_links + card->num_aux_devs),
3751 if (card->rtd == NULL)
3754 card->rtd_aux = &card->rtd[card->num_links];
3756 for (i = 0; i < card->num_links; i++)
3757 card->rtd[i].dai_link = &card->dai_link[i];
3759 INIT_LIST_HEAD(&card->list);
3760 INIT_LIST_HEAD(&card->dapm_dirty);
3761 card->instantiated = 0;
3762 mutex_init(&card->mutex);
3763 mutex_init(&card->dapm_mutex);
3765 ret = snd_soc_instantiate_card(card);
3767 soc_cleanup_card_debugfs(card);
3771 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3774 * snd_soc_unregister_card - Unregister a card with the ASoC core
3776 * @card: Card to unregister
3779 int snd_soc_unregister_card(struct snd_soc_card *card)
3781 if (card->instantiated)
3782 soc_cleanup_card_resources(card);
3783 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
3787 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3790 * Simplify DAI link configuration by removing ".-1" from device names
3791 * and sanitizing names.
3793 static char *fmt_single_name(struct device *dev, int *id)
3795 char *found, name[NAME_SIZE];
3798 if (dev_name(dev) == NULL)
3801 strlcpy(name, dev_name(dev), NAME_SIZE);
3803 /* are we a "%s.%d" name (platform and SPI components) */
3804 found = strstr(name, dev->driver->name);
3807 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3809 /* discard ID from name if ID == -1 */
3811 found[strlen(dev->driver->name)] = '\0';
3815 /* I2C component devices are named "bus-addr" */
3816 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3817 char tmp[NAME_SIZE];
3819 /* create unique ID number from I2C addr and bus */
3820 *id = ((id1 & 0xffff) << 16) + id2;
3822 /* sanitize component name for DAI link creation */
3823 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3824 strlcpy(name, tmp, NAME_SIZE);
3829 return kstrdup(name, GFP_KERNEL);
3833 * Simplify DAI link naming for single devices with multiple DAIs by removing
3834 * any ".-1" and using the DAI name (instead of device name).
3836 static inline char *fmt_multiple_name(struct device *dev,
3837 struct snd_soc_dai_driver *dai_drv)
3839 if (dai_drv->name == NULL) {
3841 "ASoC: error - multiple DAI %s registered with no name\n",
3846 return kstrdup(dai_drv->name, GFP_KERNEL);
3850 * snd_soc_register_dai - Register a DAI with the ASoC core
3852 * @dai: DAI to register
3854 static int snd_soc_register_dai(struct device *dev,
3855 struct snd_soc_dai_driver *dai_drv)
3857 struct snd_soc_codec *codec;
3858 struct snd_soc_dai *dai;
3860 dev_dbg(dev, "ASoC: dai register %s\n", dev_name(dev));
3862 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3866 /* create DAI component name */
3867 dai->name = fmt_single_name(dev, &dai->id);
3868 if (dai->name == NULL) {
3874 dai->driver = dai_drv;
3875 dai->dapm.dev = dev;
3876 if (!dai->driver->ops)
3877 dai->driver->ops = &null_dai_ops;
3879 mutex_lock(&client_mutex);
3881 list_for_each_entry(codec, &codec_list, list) {
3882 if (codec->dev == dev) {
3883 dev_dbg(dev, "ASoC: Mapped DAI %s to CODEC %s\n",
3884 dai->name, codec->name);
3891 dai->dapm.idle_bias_off = 1;
3893 list_add(&dai->list, &dai_list);
3895 mutex_unlock(&client_mutex);
3897 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
3903 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3905 * @dai: DAI to unregister
3907 static void snd_soc_unregister_dai(struct device *dev)
3909 struct snd_soc_dai *dai;
3911 list_for_each_entry(dai, &dai_list, list) {
3912 if (dev == dai->dev)
3918 mutex_lock(&client_mutex);
3919 list_del(&dai->list);
3920 mutex_unlock(&client_mutex);
3922 dev_dbg(dev, "ASoC: Unregistered DAI '%s'\n", dai->name);
3928 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3930 * @dai: Array of DAIs to register
3931 * @count: Number of DAIs
3933 static int snd_soc_register_dais(struct device *dev,
3934 struct snd_soc_dai_driver *dai_drv, size_t count)
3936 struct snd_soc_codec *codec;
3937 struct snd_soc_dai *dai;
3940 dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
3942 for (i = 0; i < count; i++) {
3944 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3950 /* create DAI component name */
3951 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3952 if (dai->name == NULL) {
3959 dai->driver = &dai_drv[i];
3960 if (dai->driver->id)
3961 dai->id = dai->driver->id;
3964 dai->dapm.dev = dev;
3965 if (!dai->driver->ops)
3966 dai->driver->ops = &null_dai_ops;
3968 mutex_lock(&client_mutex);
3970 list_for_each_entry(codec, &codec_list, list) {
3971 if (codec->dev == dev) {
3973 "ASoC: Mapped DAI %s to CODEC %s\n",
3974 dai->name, codec->name);
3981 dai->dapm.idle_bias_off = 1;
3983 list_add(&dai->list, &dai_list);
3985 mutex_unlock(&client_mutex);
3987 dev_dbg(dai->dev, "ASoC: Registered DAI '%s'\n", dai->name);
3993 for (i--; i >= 0; i--)
3994 snd_soc_unregister_dai(dev);
4000 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
4002 * @dai: Array of DAIs to unregister
4003 * @count: Number of DAIs
4005 static void snd_soc_unregister_dais(struct device *dev, size_t count)
4009 for (i = 0; i < count; i++)
4010 snd_soc_unregister_dai(dev);
4014 * snd_soc_register_component - Register a component with the ASoC core
4018 __snd_soc_register_component(struct device *dev,
4019 struct snd_soc_component *cmpnt,
4020 const struct snd_soc_component_driver *cmpnt_drv,
4021 struct snd_soc_dai_driver *dai_drv,
4022 int num_dai, bool allow_single_dai)
4026 dev_dbg(dev, "component register %s\n", dev_name(dev));
4029 dev_err(dev, "ASoC: Failed to connecting component\n");
4033 cmpnt->name = fmt_single_name(dev, &cmpnt->id);
4035 dev_err(dev, "ASoC: Failed to simplifying name\n");
4040 cmpnt->driver = cmpnt_drv;
4041 cmpnt->dai_drv = dai_drv;
4042 cmpnt->num_dai = num_dai;
4045 * snd_soc_register_dai() uses fmt_single_name(), and
4046 * snd_soc_register_dais() uses fmt_multiple_name()
4047 * for dai->name which is used for name based matching
4049 * this function is used from cpu/codec.
4050 * allow_single_dai flag can ignore "codec" driver reworking
4051 * since it had been used snd_soc_register_dais(),
4053 if ((1 == num_dai) && allow_single_dai)
4054 ret = snd_soc_register_dai(dev, dai_drv);
4056 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
4058 dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret);
4059 goto error_component_name;
4062 mutex_lock(&client_mutex);
4063 list_add(&cmpnt->list, &component_list);
4064 mutex_unlock(&client_mutex);
4066 dev_dbg(cmpnt->dev, "ASoC: Registered component '%s'\n", cmpnt->name);
4070 error_component_name:
4076 int snd_soc_register_component(struct device *dev,
4077 const struct snd_soc_component_driver *cmpnt_drv,
4078 struct snd_soc_dai_driver *dai_drv,
4081 struct snd_soc_component *cmpnt;
4083 cmpnt = devm_kzalloc(dev, sizeof(*cmpnt), GFP_KERNEL);
4085 dev_err(dev, "ASoC: Failed to allocate memory\n");
4089 return __snd_soc_register_component(dev, cmpnt, cmpnt_drv,
4090 dai_drv, num_dai, true);
4092 EXPORT_SYMBOL_GPL(snd_soc_register_component);
4095 * snd_soc_unregister_component - Unregister a component from the ASoC core
4098 void snd_soc_unregister_component(struct device *dev)
4100 struct snd_soc_component *cmpnt;
4102 list_for_each_entry(cmpnt, &component_list, list) {
4103 if (dev == cmpnt->dev)
4109 snd_soc_unregister_dais(dev, cmpnt->num_dai);
4111 mutex_lock(&client_mutex);
4112 list_del(&cmpnt->list);
4113 mutex_unlock(&client_mutex);
4115 dev_dbg(dev, "ASoC: Unregistered component '%s'\n", cmpnt->name);
4118 EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
4121 * snd_soc_add_platform - Add a platform to the ASoC core
4122 * @dev: The parent device for the platform
4123 * @platform: The platform to add
4124 * @platform_driver: The driver for the platform
4126 int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
4127 const struct snd_soc_platform_driver *platform_drv)
4129 /* create platform component name */
4130 platform->name = fmt_single_name(dev, &platform->id);
4131 if (platform->name == NULL)
4134 platform->dev = dev;
4135 platform->driver = platform_drv;
4136 platform->dapm.dev = dev;
4137 platform->dapm.platform = platform;
4138 platform->dapm.stream_event = platform_drv->stream_event;
4139 mutex_init(&platform->mutex);
4141 mutex_lock(&client_mutex);
4142 list_add(&platform->list, &platform_list);
4143 mutex_unlock(&client_mutex);
4145 dev_dbg(dev, "ASoC: Registered platform '%s'\n", platform->name);
4149 EXPORT_SYMBOL_GPL(snd_soc_add_platform);
4152 * snd_soc_register_platform - Register a platform with the ASoC core
4154 * @platform: platform to register
4156 int snd_soc_register_platform(struct device *dev,
4157 const struct snd_soc_platform_driver *platform_drv)
4159 struct snd_soc_platform *platform;
4162 dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
4164 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
4165 if (platform == NULL)
4168 ret = snd_soc_add_platform(dev, platform, platform_drv);
4174 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
4177 * snd_soc_remove_platform - Remove a platform from the ASoC core
4178 * @platform: the platform to remove
4180 void snd_soc_remove_platform(struct snd_soc_platform *platform)
4182 mutex_lock(&client_mutex);
4183 list_del(&platform->list);
4184 mutex_unlock(&client_mutex);
4186 dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
4188 kfree(platform->name);
4190 EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
4192 struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
4194 struct snd_soc_platform *platform;
4196 list_for_each_entry(platform, &platform_list, list) {
4197 if (dev == platform->dev)
4203 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
4206 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
4208 * @platform: platform to unregister
4210 void snd_soc_unregister_platform(struct device *dev)
4212 struct snd_soc_platform *platform;
4214 platform = snd_soc_lookup_platform(dev);
4218 snd_soc_remove_platform(platform);
4221 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
4223 static u64 codec_format_map[] = {
4224 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
4225 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
4226 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
4227 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
4228 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
4229 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
4230 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4231 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4232 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
4233 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
4234 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
4235 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
4236 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
4237 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
4238 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
4239 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
4242 /* Fix up the DAI formats for endianness: codecs don't actually see
4243 * the endianness of the data but we're using the CPU format
4244 * definitions which do need to include endianness so we ensure that
4245 * codec DAIs always have both big and little endian variants set.
4247 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
4251 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
4252 if (stream->formats & codec_format_map[i])
4253 stream->formats |= codec_format_map[i];
4257 * snd_soc_register_codec - Register a codec with the ASoC core
4259 * @codec: codec to register
4261 int snd_soc_register_codec(struct device *dev,
4262 const struct snd_soc_codec_driver *codec_drv,
4263 struct snd_soc_dai_driver *dai_drv,
4266 struct snd_soc_codec *codec;
4269 dev_dbg(dev, "codec register %s\n", dev_name(dev));
4271 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
4275 /* create CODEC component name */
4276 codec->name = fmt_single_name(dev, &codec->id);
4277 if (codec->name == NULL) {
4282 codec->write = codec_drv->write;
4283 codec->read = codec_drv->read;
4284 codec->volatile_register = codec_drv->volatile_register;
4285 codec->readable_register = codec_drv->readable_register;
4286 codec->writable_register = codec_drv->writable_register;
4287 codec->ignore_pmdown_time = codec_drv->ignore_pmdown_time;
4288 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
4289 codec->dapm.dev = dev;
4290 codec->dapm.codec = codec;
4291 codec->dapm.seq_notifier = codec_drv->seq_notifier;
4292 codec->dapm.stream_event = codec_drv->stream_event;
4294 codec->driver = codec_drv;
4295 codec->num_dai = num_dai;
4296 mutex_init(&codec->mutex);
4298 for (i = 0; i < num_dai; i++) {
4299 fixup_codec_formats(&dai_drv[i].playback);
4300 fixup_codec_formats(&dai_drv[i].capture);
4303 mutex_lock(&client_mutex);
4304 list_add(&codec->list, &codec_list);
4305 mutex_unlock(&client_mutex);
4307 /* register component */
4308 ret = __snd_soc_register_component(dev, &codec->component,
4309 &codec_drv->component_driver,
4310 dai_drv, num_dai, false);
4312 dev_err(codec->dev, "ASoC: Failed to regster component: %d\n", ret);
4313 goto fail_codec_name;
4316 dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n", codec->name);
4320 mutex_lock(&client_mutex);
4321 list_del(&codec->list);
4322 mutex_unlock(&client_mutex);
4329 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
4332 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4334 * @codec: codec to unregister
4336 void snd_soc_unregister_codec(struct device *dev)
4338 struct snd_soc_codec *codec;
4340 list_for_each_entry(codec, &codec_list, list) {
4341 if (dev == codec->dev)
4347 snd_soc_unregister_component(dev);
4349 mutex_lock(&client_mutex);
4350 list_del(&codec->list);
4351 mutex_unlock(&client_mutex);
4353 dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n", codec->name);
4355 snd_soc_cache_exit(codec);
4359 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
4361 /* Retrieve a card's name from device tree */
4362 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
4363 const char *propname)
4365 struct device_node *np = card->dev->of_node;
4368 ret = of_property_read_string_index(np, propname, 0, &card->name);
4370 * EINVAL means the property does not exist. This is fine providing
4371 * card->name was previously set, which is checked later in
4372 * snd_soc_register_card.
4374 if (ret < 0 && ret != -EINVAL) {
4376 "ASoC: Property '%s' could not be read: %d\n",
4383 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
4385 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
4386 const char *propname)
4388 struct device_node *np = card->dev->of_node;
4390 struct snd_soc_dapm_route *routes;
4393 num_routes = of_property_count_strings(np, propname);
4394 if (num_routes < 0 || num_routes & 1) {
4396 "ASoC: Property '%s' does not exist or its length is not even\n",
4402 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4407 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
4411 "ASoC: Could not allocate DAPM route table\n");
4415 for (i = 0; i < num_routes; i++) {
4416 ret = of_property_read_string_index(np, propname,
4417 2 * i, &routes[i].sink);
4420 "ASoC: Property '%s' index %d could not be read: %d\n",
4421 propname, 2 * i, ret);
4424 ret = of_property_read_string_index(np, propname,
4425 (2 * i) + 1, &routes[i].source);
4428 "ASoC: Property '%s' index %d could not be read: %d\n",
4429 propname, (2 * i) + 1, ret);
4434 card->num_dapm_routes = num_routes;
4435 card->dapm_routes = routes;
4439 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
4441 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
4446 unsigned int format = 0;
4452 } of_fmt_table[] = {
4453 { "i2s", SND_SOC_DAIFMT_I2S },
4454 { "right_j", SND_SOC_DAIFMT_RIGHT_J },
4455 { "left_j", SND_SOC_DAIFMT_LEFT_J },
4456 { "dsp_a", SND_SOC_DAIFMT_DSP_A },
4457 { "dsp_b", SND_SOC_DAIFMT_DSP_B },
4458 { "ac97", SND_SOC_DAIFMT_AC97 },
4459 { "pdm", SND_SOC_DAIFMT_PDM},
4460 { "msb", SND_SOC_DAIFMT_MSB },
4461 { "lsb", SND_SOC_DAIFMT_LSB },
4468 * check "[prefix]format = xxx"
4469 * SND_SOC_DAIFMT_FORMAT_MASK area
4471 snprintf(prop, sizeof(prop), "%sformat", prefix);
4472 ret = of_property_read_string(np, prop, &str);
4474 for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
4475 if (strcmp(str, of_fmt_table[i].name) == 0) {
4476 format |= of_fmt_table[i].val;
4483 * check "[prefix]continuous-clock"
4484 * SND_SOC_DAIFMT_CLOCK_MASK area
4486 snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
4487 if (of_get_property(np, prop, NULL))
4488 format |= SND_SOC_DAIFMT_CONT;
4490 format |= SND_SOC_DAIFMT_GATED;
4493 * check "[prefix]bitclock-inversion"
4494 * check "[prefix]frame-inversion"
4495 * SND_SOC_DAIFMT_INV_MASK area
4497 snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
4498 bit = !!of_get_property(np, prop, NULL);
4500 snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
4501 frame = !!of_get_property(np, prop, NULL);
4503 switch ((bit << 4) + frame) {
4505 format |= SND_SOC_DAIFMT_IB_IF;
4508 format |= SND_SOC_DAIFMT_IB_NF;
4511 format |= SND_SOC_DAIFMT_NB_IF;
4514 /* SND_SOC_DAIFMT_NB_NF is default */
4519 * check "[prefix]bitclock-master"
4520 * check "[prefix]frame-master"
4521 * SND_SOC_DAIFMT_MASTER_MASK area
4523 snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
4524 bit = !!of_get_property(np, prop, NULL);
4526 snprintf(prop, sizeof(prop), "%sframe-master", prefix);
4527 frame = !!of_get_property(np, prop, NULL);
4529 switch ((bit << 4) + frame) {
4531 format |= SND_SOC_DAIFMT_CBM_CFM;
4534 format |= SND_SOC_DAIFMT_CBM_CFS;
4537 format |= SND_SOC_DAIFMT_CBS_CFM;
4540 format |= SND_SOC_DAIFMT_CBS_CFS;
4546 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
4548 int snd_soc_of_get_dai_name(struct device_node *of_node,
4549 const char **dai_name)
4551 struct snd_soc_component *pos;
4552 struct of_phandle_args args;
4555 ret = of_parse_phandle_with_args(of_node, "sound-dai",
4556 "#sound-dai-cells", 0, &args);
4560 ret = -EPROBE_DEFER;
4562 mutex_lock(&client_mutex);
4563 list_for_each_entry(pos, &component_list, list) {
4564 if (pos->dev->of_node != args.np)
4567 if (pos->driver->of_xlate_dai_name) {
4568 ret = pos->driver->of_xlate_dai_name(pos, &args, dai_name);
4572 switch (args.args_count) {
4574 id = 0; /* same as dai_drv[0] */
4584 if (id < 0 || id >= pos->num_dai) {
4587 *dai_name = pos->dai_drv[id].name;
4594 mutex_unlock(&client_mutex);
4596 of_node_put(args.np);
4600 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
4602 static int __init snd_soc_init(void)
4604 #ifdef CONFIG_DEBUG_FS
4605 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
4606 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
4607 pr_warn("ASoC: Failed to create debugfs directory\n");
4608 snd_soc_debugfs_root = NULL;
4611 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
4613 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4615 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
4617 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4619 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
4620 &platform_list_fops))
4621 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4624 snd_soc_util_init();
4626 return platform_driver_register(&soc_driver);
4628 module_init(snd_soc_init);
4630 static void __exit snd_soc_exit(void)
4632 snd_soc_util_exit();
4634 #ifdef CONFIG_DEBUG_FS
4635 debugfs_remove_recursive(snd_soc_debugfs_root);
4637 platform_driver_unregister(&soc_driver);
4639 module_exit(snd_soc_exit);
4641 /* Module information */
4642 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4643 MODULE_DESCRIPTION("ALSA SoC Core");
4644 MODULE_LICENSE("GPL");
4645 MODULE_ALIAS("platform:soc-audio");