2 * soc-core.c -- ALSA SoC Audio Layer
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 * o Add hw rules to enforce rates, etc.
20 * o More testing with other codecs/machines.
21 * o Add more codecs and platforms to ensure good API coverage.
22 * o Support TDM on PCM and I2S
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
30 #include <linux/bitops.h>
31 #include <linux/debugfs.h>
32 #include <linux/platform_device.h>
33 #include <linux/ctype.h>
34 #include <linux/slab.h>
36 #include <sound/ac97_codec.h>
37 #include <sound/core.h>
38 #include <sound/jack.h>
39 #include <sound/pcm.h>
40 #include <sound/pcm_params.h>
41 #include <sound/soc.h>
42 #include <sound/soc-dpcm.h>
43 #include <sound/initval.h>
45 #define CREATE_TRACE_POINTS
46 #include <trace/events/asoc.h>
50 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
52 #ifdef CONFIG_DEBUG_FS
53 struct dentry *snd_soc_debugfs_root;
54 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
57 static DEFINE_MUTEX(client_mutex);
58 static LIST_HEAD(dai_list);
59 static LIST_HEAD(platform_list);
60 static LIST_HEAD(codec_list);
61 static LIST_HEAD(component_list);
64 * This is a timeout to do a DAPM powerdown after a stream is closed().
65 * It can be used to eliminate pops between different playback streams, e.g.
66 * between two audio tracks.
68 static int pmdown_time = 5000;
69 module_param(pmdown_time, int, 0);
70 MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
72 /* returns the minimum number of bytes needed to represent
73 * a particular given value */
74 static int min_bytes_needed(unsigned long val)
79 for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
82 c = (sizeof val * 8) - c;
90 /* fill buf which is 'len' bytes with a formatted
91 * string of the form 'reg: value\n' */
92 static int format_register_str(struct snd_soc_codec *codec,
93 unsigned int reg, char *buf, size_t len)
95 int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
96 int regsize = codec->driver->reg_word_size * 2;
99 char regbuf[regsize + 1];
101 /* since tmpbuf is allocated on the stack, warn the callers if they
102 * try to abuse this function */
105 /* +2 for ': ' and + 1 for '\n' */
106 if (wordsize + regsize + 2 + 1 != len)
109 ret = snd_soc_read(codec, reg);
111 memset(regbuf, 'X', regsize);
112 regbuf[regsize] = '\0';
114 snprintf(regbuf, regsize + 1, "%.*x", regsize, ret);
117 /* prepare the buffer */
118 snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf);
119 /* copy it back to the caller without the '\0' */
120 memcpy(buf, tmpbuf, len);
125 /* codec register dump */
126 static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
127 size_t count, loff_t pos)
130 int wordsize, regsize;
135 wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
136 regsize = codec->driver->reg_word_size * 2;
138 len = wordsize + regsize + 2 + 1;
140 if (!codec->driver->reg_cache_size)
143 if (codec->driver->reg_cache_step)
144 step = codec->driver->reg_cache_step;
146 for (i = 0; i < codec->driver->reg_cache_size; i += step) {
147 if (!snd_soc_codec_readable_register(codec, i))
149 if (codec->driver->display_register) {
150 count += codec->driver->display_register(codec, buf + count,
151 PAGE_SIZE - count, i);
153 /* only support larger than PAGE_SIZE bytes debugfs
154 * entries for the default case */
156 if (total + len >= count - 1)
158 format_register_str(codec, i, buf + total, len);
165 total = min(total, count - 1);
170 static ssize_t codec_reg_show(struct device *dev,
171 struct device_attribute *attr, char *buf)
173 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
175 return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
178 static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
180 static ssize_t pmdown_time_show(struct device *dev,
181 struct device_attribute *attr, char *buf)
183 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
185 return sprintf(buf, "%ld\n", rtd->pmdown_time);
188 static ssize_t pmdown_time_set(struct device *dev,
189 struct device_attribute *attr,
190 const char *buf, size_t count)
192 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
195 ret = strict_strtol(buf, 10, &rtd->pmdown_time);
202 static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
204 #ifdef CONFIG_DEBUG_FS
205 static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
206 size_t count, loff_t *ppos)
209 struct snd_soc_codec *codec = file->private_data;
212 if (*ppos < 0 || !count)
215 buf = kmalloc(count, GFP_KERNEL);
219 ret = soc_codec_reg_show(codec, buf, count, *ppos);
221 if (copy_to_user(user_buf, buf, ret)) {
232 static ssize_t codec_reg_write_file(struct file *file,
233 const char __user *user_buf, size_t count, loff_t *ppos)
238 unsigned long reg, value;
239 struct snd_soc_codec *codec = file->private_data;
241 buf_size = min(count, (sizeof(buf)-1));
242 if (copy_from_user(buf, user_buf, buf_size))
246 while (*start == ' ')
248 reg = simple_strtoul(start, &start, 16);
249 while (*start == ' ')
251 if (strict_strtoul(start, 16, &value))
254 /* Userspace has been fiddling around behind the kernel's back */
255 add_taint(TAINT_USER, LOCKDEP_NOW_UNRELIABLE);
257 snd_soc_write(codec, reg, value);
261 static const struct file_operations codec_reg_fops = {
263 .read = codec_reg_read_file,
264 .write = codec_reg_write_file,
265 .llseek = default_llseek,
268 static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
270 struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
272 codec->debugfs_codec_root = debugfs_create_dir(codec->name,
274 if (!codec->debugfs_codec_root) {
275 dev_warn(codec->dev, "ASoC: Failed to create codec debugfs"
280 debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
282 debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
285 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
286 codec->debugfs_codec_root,
287 codec, &codec_reg_fops);
288 if (!codec->debugfs_reg)
289 dev_warn(codec->dev, "ASoC: Failed to create codec register"
292 snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root);
295 static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
297 debugfs_remove_recursive(codec->debugfs_codec_root);
300 static void soc_init_platform_debugfs(struct snd_soc_platform *platform)
302 struct dentry *debugfs_card_root = platform->card->debugfs_card_root;
304 platform->debugfs_platform_root = debugfs_create_dir(platform->name,
306 if (!platform->debugfs_platform_root) {
307 dev_warn(platform->dev,
308 "ASoC: Failed to create platform debugfs directory\n");
312 snd_soc_dapm_debugfs_init(&platform->dapm,
313 platform->debugfs_platform_root);
316 static void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
318 debugfs_remove_recursive(platform->debugfs_platform_root);
321 static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
322 size_t count, loff_t *ppos)
324 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
325 ssize_t len, ret = 0;
326 struct snd_soc_codec *codec;
331 list_for_each_entry(codec, &codec_list, list) {
332 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
336 if (ret > PAGE_SIZE) {
343 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
350 static const struct file_operations codec_list_fops = {
351 .read = codec_list_read_file,
352 .llseek = default_llseek,/* read accesses f_pos */
355 static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
356 size_t count, loff_t *ppos)
358 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
359 ssize_t len, ret = 0;
360 struct snd_soc_dai *dai;
365 list_for_each_entry(dai, &dai_list, list) {
366 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", dai->name);
369 if (ret > PAGE_SIZE) {
375 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
382 static const struct file_operations dai_list_fops = {
383 .read = dai_list_read_file,
384 .llseek = default_llseek,/* read accesses f_pos */
387 static ssize_t platform_list_read_file(struct file *file,
388 char __user *user_buf,
389 size_t count, loff_t *ppos)
391 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
392 ssize_t len, ret = 0;
393 struct snd_soc_platform *platform;
398 list_for_each_entry(platform, &platform_list, list) {
399 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
403 if (ret > PAGE_SIZE) {
409 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
416 static const struct file_operations platform_list_fops = {
417 .read = platform_list_read_file,
418 .llseek = default_llseek,/* read accesses f_pos */
421 static void soc_init_card_debugfs(struct snd_soc_card *card)
423 card->debugfs_card_root = debugfs_create_dir(card->name,
424 snd_soc_debugfs_root);
425 if (!card->debugfs_card_root) {
427 "ASoC: Failed to create card debugfs directory\n");
431 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
432 card->debugfs_card_root,
434 if (!card->debugfs_pop_time)
436 "ASoC: Failed to create pop time debugfs file\n");
439 static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
441 debugfs_remove_recursive(card->debugfs_card_root);
446 static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
450 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
454 static inline void soc_init_platform_debugfs(struct snd_soc_platform *platform)
458 static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
462 static inline void soc_init_card_debugfs(struct snd_soc_card *card)
466 static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
471 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
472 const char *dai_link, int stream)
476 for (i = 0; i < card->num_links; i++) {
477 if (card->rtd[i].dai_link->no_pcm &&
478 !strcmp(card->rtd[i].dai_link->name, dai_link))
479 return card->rtd[i].pcm->streams[stream].substream;
481 dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link);
484 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);
486 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
487 const char *dai_link)
491 for (i = 0; i < card->num_links; i++) {
492 if (!strcmp(card->rtd[i].dai_link->name, dai_link))
493 return &card->rtd[i];
495 dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link);
498 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
500 #ifdef CONFIG_SND_SOC_AC97_BUS
501 /* unregister ac97 codec */
502 static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
504 if (codec->ac97->dev.bus)
505 device_unregister(&codec->ac97->dev);
509 /* stop no dev release warning */
510 static void soc_ac97_device_release(struct device *dev){}
512 /* register ac97 codec to bus */
513 static int soc_ac97_dev_register(struct snd_soc_codec *codec)
517 codec->ac97->dev.bus = &ac97_bus_type;
518 codec->ac97->dev.parent = codec->card->dev;
519 codec->ac97->dev.release = soc_ac97_device_release;
521 dev_set_name(&codec->ac97->dev, "%d-%d:%s",
522 codec->card->snd_card->number, 0, codec->name);
523 err = device_register(&codec->ac97->dev);
525 dev_err(codec->dev, "ASoC: Can't register ac97 bus\n");
526 codec->ac97->dev.bus = NULL;
533 #ifdef CONFIG_PM_SLEEP
534 /* powers down audio subsystem for suspend */
535 int snd_soc_suspend(struct device *dev)
537 struct snd_soc_card *card = dev_get_drvdata(dev);
538 struct snd_soc_codec *codec;
541 /* If the initialization of this soc device failed, there is no codec
542 * associated with it. Just bail out in this case.
544 if (list_empty(&card->codec_dev_list))
547 /* Due to the resume being scheduled into a workqueue we could
548 * suspend before that's finished - wait for it to complete.
550 snd_power_lock(card->snd_card);
551 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
552 snd_power_unlock(card->snd_card);
554 /* we're going to block userspace touching us until resume completes */
555 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
557 /* mute any active DACs */
558 for (i = 0; i < card->num_rtd; i++) {
559 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
560 struct snd_soc_dai_driver *drv = dai->driver;
562 if (card->rtd[i].dai_link->ignore_suspend)
565 if (drv->ops->digital_mute && dai->playback_active)
566 drv->ops->digital_mute(dai, 1);
569 /* suspend all pcms */
570 for (i = 0; i < card->num_rtd; i++) {
571 if (card->rtd[i].dai_link->ignore_suspend)
574 snd_pcm_suspend_all(card->rtd[i].pcm);
577 if (card->suspend_pre)
578 card->suspend_pre(card);
580 for (i = 0; i < card->num_rtd; i++) {
581 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
582 struct snd_soc_platform *platform = card->rtd[i].platform;
584 if (card->rtd[i].dai_link->ignore_suspend)
587 if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
588 cpu_dai->driver->suspend(cpu_dai);
589 if (platform->driver->suspend && !platform->suspended) {
590 platform->driver->suspend(cpu_dai);
591 platform->suspended = 1;
595 /* close any waiting streams and save state */
596 for (i = 0; i < card->num_rtd; i++) {
597 flush_delayed_work(&card->rtd[i].delayed_work);
598 card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
601 for (i = 0; i < card->num_rtd; i++) {
603 if (card->rtd[i].dai_link->ignore_suspend)
606 snd_soc_dapm_stream_event(&card->rtd[i],
607 SNDRV_PCM_STREAM_PLAYBACK,
608 SND_SOC_DAPM_STREAM_SUSPEND);
610 snd_soc_dapm_stream_event(&card->rtd[i],
611 SNDRV_PCM_STREAM_CAPTURE,
612 SND_SOC_DAPM_STREAM_SUSPEND);
615 /* Recheck all analogue paths too */
616 dapm_mark_io_dirty(&card->dapm);
617 snd_soc_dapm_sync(&card->dapm);
619 /* suspend all CODECs */
620 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
621 /* If there are paths active then the CODEC will be held with
622 * bias _ON and should not be suspended. */
623 if (!codec->suspended && codec->driver->suspend) {
624 switch (codec->dapm.bias_level) {
625 case SND_SOC_BIAS_STANDBY:
627 * If the CODEC is capable of idle
628 * bias off then being in STANDBY
629 * means it's doing something,
630 * otherwise fall through.
632 if (codec->dapm.idle_bias_off) {
634 "ASoC: idle_bias_off CODEC on"
638 case SND_SOC_BIAS_OFF:
639 codec->driver->suspend(codec);
640 codec->suspended = 1;
641 codec->cache_sync = 1;
642 if (codec->using_regmap)
643 regcache_mark_dirty(codec->control_data);
646 dev_dbg(codec->dev, "ASoC: CODEC is on"
653 for (i = 0; i < card->num_rtd; i++) {
654 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
656 if (card->rtd[i].dai_link->ignore_suspend)
659 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
660 cpu_dai->driver->suspend(cpu_dai);
663 if (card->suspend_post)
664 card->suspend_post(card);
668 EXPORT_SYMBOL_GPL(snd_soc_suspend);
670 /* deferred resume work, so resume can complete before we finished
671 * setting our codec back up, which can be very slow on I2C
673 static void soc_resume_deferred(struct work_struct *work)
675 struct snd_soc_card *card =
676 container_of(work, struct snd_soc_card, deferred_resume_work);
677 struct snd_soc_codec *codec;
680 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
681 * so userspace apps are blocked from touching us
684 dev_dbg(card->dev, "ASoC: starting resume work\n");
686 /* Bring us up into D2 so that DAPM starts enabling things */
687 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
689 if (card->resume_pre)
690 card->resume_pre(card);
692 /* resume AC97 DAIs */
693 for (i = 0; i < card->num_rtd; i++) {
694 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
696 if (card->rtd[i].dai_link->ignore_suspend)
699 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
700 cpu_dai->driver->resume(cpu_dai);
703 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
704 /* If the CODEC was idle over suspend then it will have been
705 * left with bias OFF or STANDBY and suspended so we must now
706 * resume. Otherwise the suspend was suppressed.
708 if (codec->driver->resume && codec->suspended) {
709 switch (codec->dapm.bias_level) {
710 case SND_SOC_BIAS_STANDBY:
711 case SND_SOC_BIAS_OFF:
712 codec->driver->resume(codec);
713 codec->suspended = 0;
716 dev_dbg(codec->dev, "ASoC: CODEC was on over"
723 for (i = 0; i < card->num_rtd; i++) {
725 if (card->rtd[i].dai_link->ignore_suspend)
728 snd_soc_dapm_stream_event(&card->rtd[i],
729 SNDRV_PCM_STREAM_PLAYBACK,
730 SND_SOC_DAPM_STREAM_RESUME);
732 snd_soc_dapm_stream_event(&card->rtd[i],
733 SNDRV_PCM_STREAM_CAPTURE,
734 SND_SOC_DAPM_STREAM_RESUME);
737 /* unmute any active DACs */
738 for (i = 0; i < card->num_rtd; i++) {
739 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
740 struct snd_soc_dai_driver *drv = dai->driver;
742 if (card->rtd[i].dai_link->ignore_suspend)
745 if (drv->ops->digital_mute && dai->playback_active)
746 drv->ops->digital_mute(dai, 0);
749 for (i = 0; i < card->num_rtd; i++) {
750 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
751 struct snd_soc_platform *platform = card->rtd[i].platform;
753 if (card->rtd[i].dai_link->ignore_suspend)
756 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
757 cpu_dai->driver->resume(cpu_dai);
758 if (platform->driver->resume && platform->suspended) {
759 platform->driver->resume(cpu_dai);
760 platform->suspended = 0;
764 if (card->resume_post)
765 card->resume_post(card);
767 dev_dbg(card->dev, "ASoC: resume work completed\n");
769 /* userspace can access us now we are back as we were before */
770 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
772 /* Recheck all analogue paths too */
773 dapm_mark_io_dirty(&card->dapm);
774 snd_soc_dapm_sync(&card->dapm);
777 /* powers up audio subsystem after a suspend */
778 int snd_soc_resume(struct device *dev)
780 struct snd_soc_card *card = dev_get_drvdata(dev);
781 int i, ac97_control = 0;
783 /* If the initialization of this soc device failed, there is no codec
784 * associated with it. Just bail out in this case.
786 if (list_empty(&card->codec_dev_list))
789 /* AC97 devices might have other drivers hanging off them so
790 * need to resume immediately. Other drivers don't have that
791 * problem and may take a substantial amount of time to resume
792 * due to I/O costs and anti-pop so handle them out of line.
794 for (i = 0; i < card->num_rtd; i++) {
795 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
796 ac97_control |= cpu_dai->driver->ac97_control;
799 dev_dbg(dev, "ASoC: Resuming AC97 immediately\n");
800 soc_resume_deferred(&card->deferred_resume_work);
802 dev_dbg(dev, "ASoC: Scheduling resume work\n");
803 if (!schedule_work(&card->deferred_resume_work))
804 dev_err(dev, "ASoC: resume work item may be lost\n");
809 EXPORT_SYMBOL_GPL(snd_soc_resume);
811 #define snd_soc_suspend NULL
812 #define snd_soc_resume NULL
815 static const struct snd_soc_dai_ops null_dai_ops = {
818 static int soc_bind_dai_link(struct snd_soc_card *card, int num)
820 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
821 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
822 struct snd_soc_codec *codec;
823 struct snd_soc_platform *platform;
824 struct snd_soc_dai *codec_dai, *cpu_dai;
825 const char *platform_name;
827 dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num);
829 /* Find CPU DAI from registered DAIs*/
830 list_for_each_entry(cpu_dai, &dai_list, list) {
831 if (dai_link->cpu_of_node &&
832 (cpu_dai->dev->of_node != dai_link->cpu_of_node))
834 if (dai_link->cpu_name &&
835 strcmp(dev_name(cpu_dai->dev), dai_link->cpu_name))
837 if (dai_link->cpu_dai_name &&
838 strcmp(cpu_dai->name, dai_link->cpu_dai_name))
841 rtd->cpu_dai = cpu_dai;
845 dev_err(card->dev, "ASoC: CPU DAI %s not registered\n",
846 dai_link->cpu_dai_name);
847 return -EPROBE_DEFER;
850 /* Find CODEC from registered CODECs */
851 list_for_each_entry(codec, &codec_list, list) {
852 if (dai_link->codec_of_node) {
853 if (codec->dev->of_node != dai_link->codec_of_node)
856 if (strcmp(codec->name, dai_link->codec_name))
863 * CODEC found, so find CODEC DAI from registered DAIs from
866 list_for_each_entry(codec_dai, &dai_list, list) {
867 if (codec->dev == codec_dai->dev &&
868 !strcmp(codec_dai->name,
869 dai_link->codec_dai_name)) {
871 rtd->codec_dai = codec_dai;
875 if (!rtd->codec_dai) {
876 dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
877 dai_link->codec_dai_name);
878 return -EPROBE_DEFER;
883 dev_err(card->dev, "ASoC: CODEC %s not registered\n",
884 dai_link->codec_name);
885 return -EPROBE_DEFER;
888 /* if there's no platform we match on the empty platform */
889 platform_name = dai_link->platform_name;
890 if (!platform_name && !dai_link->platform_of_node)
891 platform_name = "snd-soc-dummy";
893 /* find one from the set of registered platforms */
894 list_for_each_entry(platform, &platform_list, list) {
895 if (dai_link->platform_of_node) {
896 if (platform->dev->of_node !=
897 dai_link->platform_of_node)
900 if (strcmp(platform->name, platform_name))
904 rtd->platform = platform;
906 if (!rtd->platform) {
907 dev_err(card->dev, "ASoC: platform %s not registered\n",
908 dai_link->platform_name);
909 return -EPROBE_DEFER;
917 static int soc_remove_platform(struct snd_soc_platform *platform)
921 if (platform->driver->remove) {
922 ret = platform->driver->remove(platform);
924 dev_err(platform->dev, "ASoC: failed to remove %d\n",
928 /* Make sure all DAPM widgets are freed */
929 snd_soc_dapm_free(&platform->dapm);
931 soc_cleanup_platform_debugfs(platform);
932 platform->probed = 0;
933 list_del(&platform->card_list);
934 module_put(platform->dev->driver->owner);
939 static void soc_remove_codec(struct snd_soc_codec *codec)
943 if (codec->driver->remove) {
944 err = codec->driver->remove(codec);
946 dev_err(codec->dev, "ASoC: failed to remove %d\n", err);
949 /* Make sure all DAPM widgets are freed */
950 snd_soc_dapm_free(&codec->dapm);
952 soc_cleanup_codec_debugfs(codec);
954 list_del(&codec->card_list);
955 module_put(codec->dev->driver->owner);
958 static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order)
960 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
961 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
964 /* unregister the rtd device */
965 if (rtd->dev_registered) {
966 device_remove_file(rtd->dev, &dev_attr_pmdown_time);
967 device_remove_file(rtd->dev, &dev_attr_codec_reg);
968 device_unregister(rtd->dev);
969 rtd->dev_registered = 0;
972 /* remove the CODEC DAI */
973 if (codec_dai && codec_dai->probed &&
974 codec_dai->driver->remove_order == order) {
975 if (codec_dai->driver->remove) {
976 err = codec_dai->driver->remove(codec_dai);
978 dev_err(codec_dai->dev,
979 "ASoC: failed to remove %s: %d\n",
980 codec_dai->name, err);
982 codec_dai->probed = 0;
983 list_del(&codec_dai->card_list);
986 /* remove the cpu_dai */
987 if (cpu_dai && cpu_dai->probed &&
988 cpu_dai->driver->remove_order == order) {
989 if (cpu_dai->driver->remove) {
990 err = cpu_dai->driver->remove(cpu_dai);
992 dev_err(cpu_dai->dev,
993 "ASoC: failed to remove %s: %d\n",
997 list_del(&cpu_dai->card_list);
999 if (!cpu_dai->codec) {
1000 snd_soc_dapm_free(&cpu_dai->dapm);
1001 module_put(cpu_dai->dev->driver->owner);
1006 static void soc_remove_link_components(struct snd_soc_card *card, int num,
1009 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1010 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1011 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1012 struct snd_soc_platform *platform = rtd->platform;
1013 struct snd_soc_codec *codec;
1015 /* remove the platform */
1016 if (platform && platform->probed &&
1017 platform->driver->remove_order == order) {
1018 soc_remove_platform(platform);
1021 /* remove the CODEC-side CODEC */
1023 codec = codec_dai->codec;
1024 if (codec && codec->probed &&
1025 codec->driver->remove_order == order)
1026 soc_remove_codec(codec);
1029 /* remove any CPU-side CODEC */
1031 codec = cpu_dai->codec;
1032 if (codec && codec->probed &&
1033 codec->driver->remove_order == order)
1034 soc_remove_codec(codec);
1038 static void soc_remove_dai_links(struct snd_soc_card *card)
1042 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1044 for (dai = 0; dai < card->num_rtd; dai++)
1045 soc_remove_link_dais(card, dai, order);
1048 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1050 for (dai = 0; dai < card->num_rtd; dai++)
1051 soc_remove_link_components(card, dai, order);
1057 static void soc_set_name_prefix(struct snd_soc_card *card,
1058 struct snd_soc_codec *codec)
1062 if (card->codec_conf == NULL)
1065 for (i = 0; i < card->num_configs; i++) {
1066 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1067 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
1068 codec->name_prefix = map->name_prefix;
1074 static int soc_probe_codec(struct snd_soc_card *card,
1075 struct snd_soc_codec *codec)
1078 const struct snd_soc_codec_driver *driver = codec->driver;
1079 struct snd_soc_dai *dai;
1082 codec->dapm.card = card;
1083 soc_set_name_prefix(card, codec);
1085 if (!try_module_get(codec->dev->driver->owner))
1088 soc_init_codec_debugfs(codec);
1090 if (driver->dapm_widgets)
1091 snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
1092 driver->num_dapm_widgets);
1094 /* Create DAPM widgets for each DAI stream */
1095 list_for_each_entry(dai, &dai_list, list) {
1096 if (dai->dev != codec->dev)
1099 snd_soc_dapm_new_dai_widgets(&codec->dapm, dai);
1102 codec->dapm.idle_bias_off = driver->idle_bias_off;
1104 if (driver->probe) {
1105 ret = driver->probe(codec);
1108 "ASoC: failed to probe CODEC %d\n", ret);
1111 WARN(codec->dapm.idle_bias_off &&
1112 codec->dapm.bias_level != SND_SOC_BIAS_OFF,
1113 "codec %s can not start from non-off bias"
1114 " with idle_bias_off==1\n", codec->name);
1117 /* If the driver didn't set I/O up try regmap */
1118 if (!codec->write && dev_get_regmap(codec->dev, NULL))
1119 snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP);
1121 if (driver->controls)
1122 snd_soc_add_codec_controls(codec, driver->controls,
1123 driver->num_controls);
1124 if (driver->dapm_routes)
1125 snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
1126 driver->num_dapm_routes);
1128 /* mark codec as probed and add to card codec list */
1130 list_add(&codec->card_list, &card->codec_dev_list);
1131 list_add(&codec->dapm.list, &card->dapm_list);
1136 soc_cleanup_codec_debugfs(codec);
1137 module_put(codec->dev->driver->owner);
1142 static int soc_probe_platform(struct snd_soc_card *card,
1143 struct snd_soc_platform *platform)
1146 const struct snd_soc_platform_driver *driver = platform->driver;
1147 struct snd_soc_dai *dai;
1149 platform->card = card;
1150 platform->dapm.card = card;
1152 if (!try_module_get(platform->dev->driver->owner))
1155 soc_init_platform_debugfs(platform);
1157 if (driver->dapm_widgets)
1158 snd_soc_dapm_new_controls(&platform->dapm,
1159 driver->dapm_widgets, driver->num_dapm_widgets);
1161 /* Create DAPM widgets for each DAI stream */
1162 list_for_each_entry(dai, &dai_list, list) {
1163 if (dai->dev != platform->dev)
1166 snd_soc_dapm_new_dai_widgets(&platform->dapm, dai);
1169 platform->dapm.idle_bias_off = 1;
1171 if (driver->probe) {
1172 ret = driver->probe(platform);
1174 dev_err(platform->dev,
1175 "ASoC: failed to probe platform %d\n", ret);
1180 if (driver->controls)
1181 snd_soc_add_platform_controls(platform, driver->controls,
1182 driver->num_controls);
1183 if (driver->dapm_routes)
1184 snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
1185 driver->num_dapm_routes);
1187 /* mark platform as probed and add to card platform list */
1188 platform->probed = 1;
1189 list_add(&platform->card_list, &card->platform_dev_list);
1190 list_add(&platform->dapm.list, &card->dapm_list);
1195 soc_cleanup_platform_debugfs(platform);
1196 module_put(platform->dev->driver->owner);
1201 static void rtd_release(struct device *dev)
1206 static int soc_post_component_init(struct snd_soc_card *card,
1207 struct snd_soc_codec *codec,
1208 int num, int dailess)
1210 struct snd_soc_dai_link *dai_link = NULL;
1211 struct snd_soc_aux_dev *aux_dev = NULL;
1212 struct snd_soc_pcm_runtime *rtd;
1213 const char *temp, *name;
1217 dai_link = &card->dai_link[num];
1218 rtd = &card->rtd[num];
1219 name = dai_link->name;
1221 aux_dev = &card->aux_dev[num];
1222 rtd = &card->rtd_aux[num];
1223 name = aux_dev->name;
1227 /* Make sure all DAPM widgets are instantiated */
1228 snd_soc_dapm_new_widgets(&codec->dapm);
1230 /* machine controls, routes and widgets are not prefixed */
1231 temp = codec->name_prefix;
1232 codec->name_prefix = NULL;
1234 /* do machine specific initialization */
1235 if (!dailess && dai_link->init)
1236 ret = dai_link->init(rtd);
1237 else if (dailess && aux_dev->init)
1238 ret = aux_dev->init(&codec->dapm);
1240 dev_err(card->dev, "ASoC: failed to init %s: %d\n", name, ret);
1243 codec->name_prefix = temp;
1245 /* register the rtd device */
1248 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1251 device_initialize(rtd->dev);
1252 rtd->dev->parent = card->dev;
1253 rtd->dev->release = rtd_release;
1254 rtd->dev->init_name = name;
1255 dev_set_drvdata(rtd->dev, rtd);
1256 mutex_init(&rtd->pcm_mutex);
1257 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1258 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1259 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1260 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1261 ret = device_add(rtd->dev);
1263 /* calling put_device() here to free the rtd->dev */
1264 put_device(rtd->dev);
1266 "ASoC: failed to register runtime device: %d\n", ret);
1269 rtd->dev_registered = 1;
1271 /* add DAPM sysfs entries for this codec */
1272 ret = snd_soc_dapm_sys_add(rtd->dev);
1275 "ASoC: failed to add codec dapm sysfs entries: %d\n", ret);
1277 /* add codec sysfs entries */
1278 ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
1281 "ASoC: failed to add codec sysfs files: %d\n", ret);
1283 #ifdef CONFIG_DEBUG_FS
1284 /* add DPCM sysfs entries */
1285 if (!dailess && !dai_link->dynamic)
1288 ret = soc_dpcm_debugfs_add(rtd);
1290 dev_err(rtd->dev, "ASoC: failed to add dpcm sysfs entries: %d\n", ret);
1297 static int soc_probe_link_components(struct snd_soc_card *card, int num,
1300 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1301 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1302 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1303 struct snd_soc_platform *platform = rtd->platform;
1306 /* probe the CPU-side component, if it is a CODEC */
1307 if (cpu_dai->codec &&
1308 !cpu_dai->codec->probed &&
1309 cpu_dai->codec->driver->probe_order == order) {
1310 ret = soc_probe_codec(card, cpu_dai->codec);
1315 /* probe the CODEC-side component */
1316 if (!codec_dai->codec->probed &&
1317 codec_dai->codec->driver->probe_order == order) {
1318 ret = soc_probe_codec(card, codec_dai->codec);
1323 /* probe the platform */
1324 if (!platform->probed &&
1325 platform->driver->probe_order == order) {
1326 ret = soc_probe_platform(card, platform);
1334 static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
1336 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1337 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1338 struct snd_soc_codec *codec = rtd->codec;
1339 struct snd_soc_platform *platform = rtd->platform;
1340 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1341 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1342 struct snd_soc_dapm_widget *play_w, *capture_w;
1345 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1346 card->name, num, order);
1348 /* config components */
1349 cpu_dai->platform = platform;
1350 codec_dai->card = card;
1351 cpu_dai->card = card;
1353 /* set default power off timeout */
1354 rtd->pmdown_time = pmdown_time;
1356 /* probe the cpu_dai */
1357 if (!cpu_dai->probed &&
1358 cpu_dai->driver->probe_order == order) {
1359 if (!cpu_dai->codec) {
1360 cpu_dai->dapm.card = card;
1361 if (!try_module_get(cpu_dai->dev->driver->owner))
1364 list_add(&cpu_dai->dapm.list, &card->dapm_list);
1365 snd_soc_dapm_new_dai_widgets(&cpu_dai->dapm, cpu_dai);
1368 if (cpu_dai->driver->probe) {
1369 ret = cpu_dai->driver->probe(cpu_dai);
1371 dev_err(cpu_dai->dev,
1372 "ASoC: failed to probe CPU DAI %s: %d\n",
1373 cpu_dai->name, ret);
1374 module_put(cpu_dai->dev->driver->owner);
1378 cpu_dai->probed = 1;
1379 /* mark cpu_dai as probed and add to card dai list */
1380 list_add(&cpu_dai->card_list, &card->dai_dev_list);
1383 /* probe the CODEC DAI */
1384 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
1385 if (codec_dai->driver->probe) {
1386 ret = codec_dai->driver->probe(codec_dai);
1388 dev_err(codec_dai->dev,
1389 "ASoC: failed to probe CODEC DAI %s: %d\n",
1390 codec_dai->name, ret);
1395 /* mark codec_dai as probed and add to card dai list */
1396 codec_dai->probed = 1;
1397 list_add(&codec_dai->card_list, &card->dai_dev_list);
1400 /* complete DAI probe during last probe */
1401 if (order != SND_SOC_COMP_ORDER_LAST)
1404 ret = soc_post_component_init(card, codec, num, 0);
1408 ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
1410 dev_warn(rtd->dev, "ASoC: failed to add pmdown_time sysfs: %d\n",
1413 if (cpu_dai->driver->compress_dai) {
1414 /*create compress_device"*/
1415 ret = soc_new_compress(rtd, num);
1417 dev_err(card->dev, "ASoC: can't create compress %s\n",
1418 dai_link->stream_name);
1423 if (!dai_link->params) {
1424 /* create the pcm */
1425 ret = soc_new_pcm(rtd, num);
1427 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1428 dai_link->stream_name, ret);
1432 /* link the DAI widgets */
1433 play_w = codec_dai->playback_widget;
1434 capture_w = cpu_dai->capture_widget;
1435 if (play_w && capture_w) {
1436 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1439 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1440 play_w->name, capture_w->name, ret);
1445 play_w = cpu_dai->playback_widget;
1446 capture_w = codec_dai->capture_widget;
1447 if (play_w && capture_w) {
1448 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1451 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1452 play_w->name, capture_w->name, ret);
1459 /* add platform data for AC97 devices */
1460 if (rtd->codec_dai->driver->ac97_control)
1461 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1466 #ifdef CONFIG_SND_SOC_AC97_BUS
1467 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1471 /* Only instantiate AC97 if not already done by the adaptor
1472 * for the generic AC97 subsystem.
1474 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
1476 * It is possible that the AC97 device is already registered to
1477 * the device subsystem. This happens when the device is created
1478 * via snd_ac97_mixer(). Currently only SoC codec that does so
1479 * is the generic AC97 glue but others migh emerge.
1481 * In those cases we don't try to register the device again.
1483 if (!rtd->codec->ac97_created)
1486 ret = soc_ac97_dev_register(rtd->codec);
1488 dev_err(rtd->codec->dev,
1489 "ASoC: AC97 device register failed: %d\n", ret);
1493 rtd->codec->ac97_registered = 1;
1498 static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1500 if (codec->ac97_registered) {
1501 soc_ac97_dev_unregister(codec);
1502 codec->ac97_registered = 0;
1507 static int soc_check_aux_dev(struct snd_soc_card *card, int num)
1509 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1510 struct snd_soc_codec *codec;
1512 /* find CODEC from registered CODECs*/
1513 list_for_each_entry(codec, &codec_list, list) {
1514 if (!strcmp(codec->name, aux_dev->codec_name))
1518 dev_err(card->dev, "ASoC: %s not registered\n", aux_dev->codec_name);
1520 return -EPROBE_DEFER;
1523 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1525 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1526 struct snd_soc_codec *codec;
1529 /* find CODEC from registered CODECs*/
1530 list_for_each_entry(codec, &codec_list, list) {
1531 if (!strcmp(codec->name, aux_dev->codec_name)) {
1532 if (codec->probed) {
1534 "ASoC: codec already probed");
1541 /* codec not found */
1542 dev_err(card->dev, "ASoC: codec %s not found", aux_dev->codec_name);
1543 return -EPROBE_DEFER;
1546 ret = soc_probe_codec(card, codec);
1550 ret = soc_post_component_init(card, codec, num, 1);
1556 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1558 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1559 struct snd_soc_codec *codec = rtd->codec;
1561 /* unregister the rtd device */
1562 if (rtd->dev_registered) {
1563 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1564 device_unregister(rtd->dev);
1565 rtd->dev_registered = 0;
1568 if (codec && codec->probed)
1569 soc_remove_codec(codec);
1572 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
1573 enum snd_soc_compress_type compress_type)
1577 if (codec->cache_init)
1580 /* override the compress_type if necessary */
1581 if (compress_type && codec->compress_type != compress_type)
1582 codec->compress_type = compress_type;
1583 ret = snd_soc_cache_init(codec);
1585 dev_err(codec->dev, "ASoC: Failed to set cache compression"
1586 " type: %d\n", ret);
1589 codec->cache_init = 1;
1593 static int snd_soc_instantiate_card(struct snd_soc_card *card)
1595 struct snd_soc_codec *codec;
1596 struct snd_soc_codec_conf *codec_conf;
1597 enum snd_soc_compress_type compress_type;
1598 #ifndef CONFIG_SND_RK_SOC
1599 struct snd_soc_dai_link *dai_link;
1604 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1607 for (i = 0; i < card->num_links; i++) {
1608 ret = soc_bind_dai_link(card, i);
1613 /* check aux_devs too */
1614 for (i = 0; i < card->num_aux_devs; i++) {
1615 ret = soc_check_aux_dev(card, i);
1620 /* initialize the register cache for each available codec */
1621 list_for_each_entry(codec, &codec_list, list) {
1622 if (codec->cache_init)
1624 /* by default we don't override the compress_type */
1626 /* check to see if we need to override the compress_type */
1627 for (i = 0; i < card->num_configs; ++i) {
1628 codec_conf = &card->codec_conf[i];
1629 if (!strcmp(codec->name, codec_conf->dev_name)) {
1630 compress_type = codec_conf->compress_type;
1631 if (compress_type && compress_type
1632 != codec->compress_type)
1636 ret = snd_soc_init_codec_cache(codec, compress_type);
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);
1645 dev_err(card->dev, "ASoC: can't create sound card for"
1646 " card %s: %d\n", card->name, ret);
1649 card->snd_card->dev = card->dev;
1651 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1652 card->dapm.dev = card->dev;
1653 card->dapm.card = card;
1654 list_add(&card->dapm.list, &card->dapm_list);
1656 #ifdef CONFIG_DEBUG_FS
1657 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1660 #ifdef CONFIG_PM_SLEEP
1661 /* deferred resume work */
1662 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1665 if (card->dapm_widgets)
1666 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1667 card->num_dapm_widgets);
1669 /* initialise the sound card only once */
1671 ret = card->probe(card);
1673 goto card_probe_error;
1676 /* probe all components used by DAI links on this card */
1677 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1679 for (i = 0; i < card->num_links; i++) {
1680 ret = soc_probe_link_components(card, i, order);
1683 "ASoC: failed to instantiate card %d\n",
1690 /* probe all DAI links on this card */
1691 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1693 for (i = 0; i < card->num_links; i++) {
1694 ret = soc_probe_link_dais(card, i, order);
1697 "ASoC: failed to instantiate card %d\n",
1704 for (i = 0; i < card->num_aux_devs; i++) {
1705 ret = soc_probe_aux_dev(card, i);
1708 "ASoC: failed to add auxiliary devices %d\n",
1710 goto probe_aux_dev_err;
1714 snd_soc_dapm_link_dai_widgets(card);
1717 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1719 if (card->dapm_routes)
1720 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1721 card->num_dapm_routes);
1723 snd_soc_dapm_new_widgets(&card->dapm);
1725 //dai_fmt will and need to be setted in hw_parsms for codecs, so ignore here.
1726 #ifndef CONFIG_SND_RK_SOC
1727 for (i = 0; i < card->num_links; i++) {
1728 dai_link = &card->dai_link[i];
1729 dai_fmt = dai_link->dai_fmt;
1732 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1734 if (ret != 0 && ret != -ENOTSUPP)
1735 dev_warn(card->rtd[i].codec_dai->dev,
1736 "ASoC: Failed to set DAI format: %d\n",
1740 /* If this is a regular CPU link there will be a platform */
1742 (dai_link->platform_name || dai_link->platform_of_node)) {
1743 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1745 if (ret != 0 && ret != -ENOTSUPP)
1746 dev_warn(card->rtd[i].cpu_dai->dev,
1747 "ASoC: Failed to set DAI format: %d\n",
1749 } else if (dai_fmt) {
1750 /* Flip the polarity for the "CPU" end */
1751 dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
1752 switch (dai_link->dai_fmt &
1753 SND_SOC_DAIFMT_MASTER_MASK) {
1754 case SND_SOC_DAIFMT_CBM_CFM:
1755 dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1757 case SND_SOC_DAIFMT_CBM_CFS:
1758 dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1760 case SND_SOC_DAIFMT_CBS_CFM:
1761 dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1763 case SND_SOC_DAIFMT_CBS_CFS:
1764 dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1768 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1770 if (ret != 0 && ret != -ENOTSUPP)
1771 dev_warn(card->rtd[i].cpu_dai->dev,
1772 "ASoC: Failed to set DAI format: %d\n",
1776 #endif //CONFIG_SND_RK_SOC
1778 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1780 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1781 "%s", card->long_name ? card->long_name : card->name);
1782 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1783 "%s", card->driver_name ? card->driver_name : card->name);
1784 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1785 switch (card->snd_card->driver[i]) {
1791 if (!isalnum(card->snd_card->driver[i]))
1792 card->snd_card->driver[i] = '_';
1797 if (card->late_probe) {
1798 ret = card->late_probe(card);
1800 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
1802 goto probe_aux_dev_err;
1806 snd_soc_dapm_new_widgets(&card->dapm);
1808 if (card->fully_routed)
1809 list_for_each_entry(codec, &card->codec_dev_list, card_list)
1810 snd_soc_dapm_auto_nc_codec_pins(codec);
1812 ret = snd_card_register(card->snd_card);
1814 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
1816 goto probe_aux_dev_err;
1819 #ifdef CONFIG_SND_SOC_AC97_BUS
1820 /* register any AC97 codecs */
1821 for (i = 0; i < card->num_rtd; i++) {
1822 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1824 dev_err(card->dev, "ASoC: failed to register AC97:"
1827 soc_unregister_ac97_dai_link(card->rtd[i].codec);
1828 goto probe_aux_dev_err;
1833 card->instantiated = 1;
1834 snd_soc_dapm_sync(&card->dapm);
1835 mutex_unlock(&card->mutex);
1840 for (i = 0; i < card->num_aux_devs; i++)
1841 soc_remove_aux_dev(card, i);
1844 soc_remove_dai_links(card);
1850 snd_card_free(card->snd_card);
1853 mutex_unlock(&card->mutex);
1858 /* probes a new socdev */
1859 static int soc_probe(struct platform_device *pdev)
1861 struct snd_soc_card *card = platform_get_drvdata(pdev);
1864 * no card, so machine driver should be registering card
1865 * we should not be here in that case so ret error
1870 dev_warn(&pdev->dev,
1871 "ASoC: machine %s should use snd_soc_register_card()\n",
1874 /* Bodge while we unpick instantiation */
1875 card->dev = &pdev->dev;
1877 return snd_soc_register_card(card);
1880 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1884 /* make sure any delayed work runs */
1885 for (i = 0; i < card->num_rtd; i++) {
1886 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1887 flush_delayed_work(&rtd->delayed_work);
1890 /* remove auxiliary devices */
1891 for (i = 0; i < card->num_aux_devs; i++)
1892 soc_remove_aux_dev(card, i);
1894 /* remove and free each DAI */
1895 soc_remove_dai_links(card);
1897 soc_cleanup_card_debugfs(card);
1899 /* remove the card */
1903 snd_soc_dapm_free(&card->dapm);
1905 snd_card_free(card->snd_card);
1910 /* removes a socdev */
1911 static int soc_remove(struct platform_device *pdev)
1913 struct snd_soc_card *card = platform_get_drvdata(pdev);
1915 snd_soc_unregister_card(card);
1919 int snd_soc_poweroff(struct device *dev)
1921 struct snd_soc_card *card = dev_get_drvdata(dev);
1924 if (!card->instantiated)
1927 /* Flush out pmdown_time work - we actually do want to run it
1928 * now, we're shutting down so no imminent restart. */
1929 for (i = 0; i < card->num_rtd; i++) {
1930 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1931 flush_delayed_work(&rtd->delayed_work);
1934 snd_soc_dapm_shutdown(card);
1938 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
1940 const struct dev_pm_ops snd_soc_pm_ops = {
1941 .suspend = snd_soc_suspend,
1942 .resume = snd_soc_resume,
1943 .freeze = snd_soc_suspend,
1944 .thaw = snd_soc_resume,
1945 .poweroff = snd_soc_poweroff,
1946 .restore = snd_soc_resume,
1948 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
1950 /* ASoC platform driver */
1951 static struct platform_driver soc_driver = {
1953 .name = "soc-audio",
1954 .owner = THIS_MODULE,
1955 .pm = &snd_soc_pm_ops,
1958 .remove = soc_remove,
1962 * snd_soc_codec_volatile_register: Report if a register is volatile.
1964 * @codec: CODEC to query.
1965 * @reg: Register to query.
1967 * Boolean function indiciating if a CODEC register is volatile.
1969 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
1972 if (codec->volatile_register)
1973 return codec->volatile_register(codec, reg);
1977 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
1980 * snd_soc_codec_readable_register: Report if a register is readable.
1982 * @codec: CODEC to query.
1983 * @reg: Register to query.
1985 * Boolean function indicating if a CODEC register is readable.
1987 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
1990 if (codec->readable_register)
1991 return codec->readable_register(codec, reg);
1995 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
1998 * snd_soc_codec_writable_register: Report if a register is writable.
2000 * @codec: CODEC to query.
2001 * @reg: Register to query.
2003 * Boolean function indicating if a CODEC register is writable.
2005 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
2008 if (codec->writable_register)
2009 return codec->writable_register(codec, reg);
2013 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
2015 int snd_soc_platform_read(struct snd_soc_platform *platform,
2020 if (!platform->driver->read) {
2021 dev_err(platform->dev, "ASoC: platform has no read back\n");
2025 ret = platform->driver->read(platform, reg);
2026 dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
2027 trace_snd_soc_preg_read(platform, reg, ret);
2031 EXPORT_SYMBOL_GPL(snd_soc_platform_read);
2033 int snd_soc_platform_write(struct snd_soc_platform *platform,
2034 unsigned int reg, unsigned int val)
2036 if (!platform->driver->write) {
2037 dev_err(platform->dev, "ASoC: platform has no write back\n");
2041 dev_dbg(platform->dev, "write %x = %x\n", reg, val);
2042 trace_snd_soc_preg_write(platform, reg, val);
2043 return platform->driver->write(platform, reg, val);
2045 EXPORT_SYMBOL_GPL(snd_soc_platform_write);
2048 * snd_soc_new_ac97_codec - initailise AC97 device
2049 * @codec: audio codec
2050 * @ops: AC97 bus operations
2051 * @num: AC97 codec number
2053 * Initialises AC97 codec resources for use by ad-hoc devices only.
2055 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
2056 struct snd_ac97_bus_ops *ops, int num)
2058 mutex_lock(&codec->mutex);
2060 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2061 if (codec->ac97 == NULL) {
2062 mutex_unlock(&codec->mutex);
2066 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
2067 if (codec->ac97->bus == NULL) {
2070 mutex_unlock(&codec->mutex);
2074 codec->ac97->bus->ops = ops;
2075 codec->ac97->num = num;
2078 * Mark the AC97 device to be created by us. This way we ensure that the
2079 * device will be registered with the device subsystem later on.
2081 codec->ac97_created = 1;
2083 mutex_unlock(&codec->mutex);
2086 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
2089 * snd_soc_free_ac97_codec - free AC97 codec device
2090 * @codec: audio codec
2092 * Frees AC97 codec device resources.
2094 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
2096 mutex_lock(&codec->mutex);
2097 #ifdef CONFIG_SND_SOC_AC97_BUS
2098 soc_unregister_ac97_dai_link(codec);
2100 kfree(codec->ac97->bus);
2103 codec->ac97_created = 0;
2104 mutex_unlock(&codec->mutex);
2106 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
2108 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
2112 ret = codec->read(codec, reg);
2113 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
2114 trace_snd_soc_reg_read(codec, reg, ret);
2118 EXPORT_SYMBOL_GPL(snd_soc_read);
2120 unsigned int snd_soc_write(struct snd_soc_codec *codec,
2121 unsigned int reg, unsigned int val)
2123 dev_dbg(codec->dev, "write %x => %x\n", reg, val);
2124 trace_snd_soc_reg_write(codec, reg, val);
2125 return codec->write(codec, reg, val);
2127 EXPORT_SYMBOL_GPL(snd_soc_write);
2129 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
2130 unsigned int reg, const void *data, size_t len)
2132 return codec->bulk_write_raw(codec, reg, data, len);
2134 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw);
2137 * snd_soc_update_bits - update codec register bits
2138 * @codec: audio codec
2139 * @reg: codec register
2140 * @mask: register mask
2143 * Writes new register value.
2145 * Returns 1 for change, 0 for no change, or negative error code.
2147 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
2148 unsigned int mask, unsigned int value)
2151 unsigned int old, new;
2154 if (codec->using_regmap) {
2155 ret = regmap_update_bits_check(codec->control_data, reg,
2156 mask, value, &change);
2158 ret = snd_soc_read(codec, reg);
2163 new = (old & ~mask) | (value & mask);
2164 change = old != new;
2166 ret = snd_soc_write(codec, reg, new);
2174 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
2177 * snd_soc_update_bits_locked - update codec register bits
2178 * @codec: audio codec
2179 * @reg: codec register
2180 * @mask: register mask
2183 * Writes new register value, and takes the codec mutex.
2185 * Returns 1 for change else 0.
2187 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
2188 unsigned short reg, unsigned int mask,
2193 mutex_lock(&codec->mutex);
2194 change = snd_soc_update_bits(codec, reg, mask, value);
2195 mutex_unlock(&codec->mutex);
2199 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
2202 * snd_soc_test_bits - test register for change
2203 * @codec: audio codec
2204 * @reg: codec register
2205 * @mask: register mask
2208 * Tests a register with a new value and checks if the new value is
2209 * different from the old value.
2211 * Returns 1 for change else 0.
2213 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
2214 unsigned int mask, unsigned int value)
2217 unsigned int old, new;
2219 old = snd_soc_read(codec, reg);
2220 new = (old & ~mask) | value;
2221 change = old != new;
2225 EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2228 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2229 * @substream: the pcm substream
2230 * @hw: the hardware parameters
2232 * Sets the substream runtime hardware parameters.
2234 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
2235 const struct snd_pcm_hardware *hw)
2237 struct snd_pcm_runtime *runtime = substream->runtime;
2238 runtime->hw.info = hw->info;
2239 runtime->hw.formats = hw->formats;
2240 runtime->hw.period_bytes_min = hw->period_bytes_min;
2241 runtime->hw.period_bytes_max = hw->period_bytes_max;
2242 runtime->hw.periods_min = hw->periods_min;
2243 runtime->hw.periods_max = hw->periods_max;
2244 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
2245 runtime->hw.fifo_size = hw->fifo_size;
2248 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
2251 * snd_soc_cnew - create new control
2252 * @_template: control template
2253 * @data: control private data
2254 * @long_name: control long name
2255 * @prefix: control name prefix
2257 * Create a new mixer control from a template control.
2259 * Returns 0 for success, else error.
2261 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2262 void *data, const char *long_name,
2265 struct snd_kcontrol_new template;
2266 struct snd_kcontrol *kcontrol;
2270 memcpy(&template, _template, sizeof(template));
2274 long_name = template.name;
2277 name_len = strlen(long_name) + strlen(prefix) + 2;
2278 name = kmalloc(name_len, GFP_KERNEL);
2282 snprintf(name, name_len, "%s %s", prefix, long_name);
2284 template.name = name;
2286 template.name = long_name;
2289 kcontrol = snd_ctl_new1(&template, data);
2295 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2297 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2298 const struct snd_kcontrol_new *controls, int num_controls,
2299 const char *prefix, void *data)
2303 for (i = 0; i < num_controls; i++) {
2304 const struct snd_kcontrol_new *control = &controls[i];
2305 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2306 control->name, prefix));
2308 dev_err(dev, "ASoC: Failed to add %s: %d\n",
2309 control->name, err);
2318 * snd_soc_add_codec_controls - add an array of controls to a codec.
2319 * Convenience function to add a list of controls. Many codecs were
2320 * duplicating this code.
2322 * @codec: codec to add controls to
2323 * @controls: array of controls to add
2324 * @num_controls: number of elements in the array
2326 * Return 0 for success, else error.
2328 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2329 const struct snd_kcontrol_new *controls, int num_controls)
2331 struct snd_card *card = codec->card->snd_card;
2333 return snd_soc_add_controls(card, codec->dev, controls, num_controls,
2334 codec->name_prefix, codec);
2336 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2339 * snd_soc_add_platform_controls - add an array of controls to a platform.
2340 * Convenience function to add a list of controls.
2342 * @platform: platform to add controls to
2343 * @controls: array of controls to add
2344 * @num_controls: number of elements in the array
2346 * Return 0 for success, else error.
2348 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2349 const struct snd_kcontrol_new *controls, int num_controls)
2351 struct snd_card *card = platform->card->snd_card;
2353 return snd_soc_add_controls(card, platform->dev, controls, num_controls,
2356 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2359 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2360 * Convenience function to add a list of controls.
2362 * @soc_card: SoC card to add controls to
2363 * @controls: array of controls to add
2364 * @num_controls: number of elements in the array
2366 * Return 0 for success, else error.
2368 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2369 const struct snd_kcontrol_new *controls, int num_controls)
2371 struct snd_card *card = soc_card->snd_card;
2373 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2376 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2379 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2380 * Convienience function to add a list of controls.
2382 * @dai: DAI to add controls to
2383 * @controls: array of controls to add
2384 * @num_controls: number of elements in the array
2386 * Return 0 for success, else error.
2388 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2389 const struct snd_kcontrol_new *controls, int num_controls)
2391 struct snd_card *card = dai->card->snd_card;
2393 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2396 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2399 * snd_soc_info_enum_double - enumerated double mixer info callback
2400 * @kcontrol: mixer control
2401 * @uinfo: control element information
2403 * Callback to provide information about a double enumerated
2406 * Returns 0 for success.
2408 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2409 struct snd_ctl_elem_info *uinfo)
2411 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2413 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2414 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2415 uinfo->value.enumerated.items = e->max;
2417 if (uinfo->value.enumerated.item > e->max - 1)
2418 uinfo->value.enumerated.item = e->max - 1;
2419 strcpy(uinfo->value.enumerated.name,
2420 e->texts[uinfo->value.enumerated.item]);
2423 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2426 * snd_soc_get_enum_double - enumerated double mixer get callback
2427 * @kcontrol: mixer control
2428 * @ucontrol: control element information
2430 * Callback to get the value of a double enumerated mixer.
2432 * Returns 0 for success.
2434 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2435 struct snd_ctl_elem_value *ucontrol)
2437 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2438 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2441 val = snd_soc_read(codec, e->reg);
2442 ucontrol->value.enumerated.item[0]
2443 = (val >> e->shift_l) & e->mask;
2444 if (e->shift_l != e->shift_r)
2445 ucontrol->value.enumerated.item[1] =
2446 (val >> e->shift_r) & e->mask;
2450 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2453 * snd_soc_put_enum_double - enumerated double mixer put callback
2454 * @kcontrol: mixer control
2455 * @ucontrol: control element information
2457 * Callback to set the value of a double enumerated mixer.
2459 * Returns 0 for success.
2461 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2462 struct snd_ctl_elem_value *ucontrol)
2464 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2465 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2469 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2471 val = ucontrol->value.enumerated.item[0] << e->shift_l;
2472 mask = e->mask << e->shift_l;
2473 if (e->shift_l != e->shift_r) {
2474 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2476 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2477 mask |= e->mask << e->shift_r;
2480 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2482 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2485 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2486 * @kcontrol: mixer control
2487 * @ucontrol: control element information
2489 * Callback to get the value of a double semi enumerated mixer.
2491 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2492 * used for handling bitfield coded enumeration for example.
2494 * Returns 0 for success.
2496 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
2497 struct snd_ctl_elem_value *ucontrol)
2499 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2500 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2501 unsigned int reg_val, val, mux;
2503 reg_val = snd_soc_read(codec, e->reg);
2504 val = (reg_val >> e->shift_l) & e->mask;
2505 for (mux = 0; mux < e->max; mux++) {
2506 if (val == e->values[mux])
2509 ucontrol->value.enumerated.item[0] = mux;
2510 if (e->shift_l != e->shift_r) {
2511 val = (reg_val >> e->shift_r) & e->mask;
2512 for (mux = 0; mux < e->max; mux++) {
2513 if (val == e->values[mux])
2516 ucontrol->value.enumerated.item[1] = mux;
2521 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
2524 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2525 * @kcontrol: mixer control
2526 * @ucontrol: control element information
2528 * Callback to set the value of a double semi enumerated mixer.
2530 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2531 * used for handling bitfield coded enumeration for example.
2533 * Returns 0 for success.
2535 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
2536 struct snd_ctl_elem_value *ucontrol)
2538 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2539 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2543 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2545 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2546 mask = e->mask << e->shift_l;
2547 if (e->shift_l != e->shift_r) {
2548 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2550 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2551 mask |= e->mask << e->shift_r;
2554 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2556 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
2559 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2560 * @kcontrol: mixer control
2561 * @uinfo: control element information
2563 * Callback to provide information about an external enumerated
2566 * Returns 0 for success.
2568 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
2569 struct snd_ctl_elem_info *uinfo)
2571 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2573 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2575 uinfo->value.enumerated.items = e->max;
2577 if (uinfo->value.enumerated.item > e->max - 1)
2578 uinfo->value.enumerated.item = e->max - 1;
2579 strcpy(uinfo->value.enumerated.name,
2580 e->texts[uinfo->value.enumerated.item]);
2583 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);
2586 * snd_soc_info_volsw_ext - external single mixer info callback
2587 * @kcontrol: mixer control
2588 * @uinfo: control element information
2590 * Callback to provide information about a single external mixer control.
2592 * Returns 0 for success.
2594 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
2595 struct snd_ctl_elem_info *uinfo)
2597 int max = kcontrol->private_value;
2599 if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
2600 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2602 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2605 uinfo->value.integer.min = 0;
2606 uinfo->value.integer.max = max;
2609 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);
2612 * snd_soc_info_volsw - single mixer info callback
2613 * @kcontrol: mixer control
2614 * @uinfo: control element information
2616 * Callback to provide information about a single mixer control, or a double
2617 * mixer control that spans 2 registers.
2619 * Returns 0 for success.
2621 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2622 struct snd_ctl_elem_info *uinfo)
2624 struct soc_mixer_control *mc =
2625 (struct soc_mixer_control *)kcontrol->private_value;
2628 if (!mc->platform_max)
2629 mc->platform_max = mc->max;
2630 platform_max = mc->platform_max;
2632 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2633 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2635 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2637 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2638 uinfo->value.integer.min = 0;
2639 uinfo->value.integer.max = platform_max;
2642 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2645 * snd_soc_get_volsw - single mixer get callback
2646 * @kcontrol: mixer control
2647 * @ucontrol: control element information
2649 * Callback to get the value of a single mixer control, or a double mixer
2650 * control that spans 2 registers.
2652 * Returns 0 for success.
2654 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2655 struct snd_ctl_elem_value *ucontrol)
2657 struct soc_mixer_control *mc =
2658 (struct soc_mixer_control *)kcontrol->private_value;
2659 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2660 unsigned int reg = mc->reg;
2661 unsigned int reg2 = mc->rreg;
2662 unsigned int shift = mc->shift;
2663 unsigned int rshift = mc->rshift;
2665 unsigned int mask = (1 << fls(max)) - 1;
2666 unsigned int invert = mc->invert;
2668 ucontrol->value.integer.value[0] =
2669 (snd_soc_read(codec, reg) >> shift) & mask;
2671 ucontrol->value.integer.value[0] =
2672 max - ucontrol->value.integer.value[0];
2674 if (snd_soc_volsw_is_stereo(mc)) {
2676 ucontrol->value.integer.value[1] =
2677 (snd_soc_read(codec, reg) >> rshift) & mask;
2679 ucontrol->value.integer.value[1] =
2680 (snd_soc_read(codec, reg2) >> shift) & mask;
2682 ucontrol->value.integer.value[1] =
2683 max - ucontrol->value.integer.value[1];
2688 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2691 * snd_soc_put_volsw - single mixer put callback
2692 * @kcontrol: mixer control
2693 * @ucontrol: control element information
2695 * Callback to set the value of a single mixer control, or a double mixer
2696 * control that spans 2 registers.
2698 * Returns 0 for success.
2700 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2701 struct snd_ctl_elem_value *ucontrol)
2703 struct soc_mixer_control *mc =
2704 (struct soc_mixer_control *)kcontrol->private_value;
2705 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2706 unsigned int reg = mc->reg;
2707 unsigned int reg2 = mc->rreg;
2708 unsigned int shift = mc->shift;
2709 unsigned int rshift = mc->rshift;
2711 unsigned int mask = (1 << fls(max)) - 1;
2712 unsigned int invert = mc->invert;
2715 unsigned int val2 = 0;
2716 unsigned int val, val_mask;
2718 val = (ucontrol->value.integer.value[0] & mask);
2721 val_mask = mask << shift;
2723 if (snd_soc_volsw_is_stereo(mc)) {
2724 val2 = (ucontrol->value.integer.value[1] & mask);
2728 val_mask |= mask << rshift;
2729 val |= val2 << rshift;
2731 val2 = val2 << shift;
2735 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2740 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2744 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2747 * snd_soc_get_volsw_sx - single mixer get callback
2748 * @kcontrol: mixer control
2749 * @ucontrol: control element information
2751 * Callback to get the value of a single mixer control, or a double mixer
2752 * control that spans 2 registers.
2754 * Returns 0 for success.
2756 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
2757 struct snd_ctl_elem_value *ucontrol)
2759 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2760 struct soc_mixer_control *mc =
2761 (struct soc_mixer_control *)kcontrol->private_value;
2763 unsigned int reg = mc->reg;
2764 unsigned int reg2 = mc->rreg;
2765 unsigned int shift = mc->shift;
2766 unsigned int rshift = mc->rshift;
2769 int mask = (1 << (fls(min + max) - 1)) - 1;
2771 ucontrol->value.integer.value[0] =
2772 ((snd_soc_read(codec, reg) >> shift) - min) & mask;
2774 if (snd_soc_volsw_is_stereo(mc))
2775 ucontrol->value.integer.value[1] =
2776 ((snd_soc_read(codec, reg2) >> rshift) - min) & mask;
2780 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
2783 * snd_soc_put_volsw_sx - double mixer set callback
2784 * @kcontrol: mixer control
2785 * @uinfo: control element information
2787 * Callback to set the value of a double mixer control that spans 2 registers.
2789 * Returns 0 for success.
2791 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
2792 struct snd_ctl_elem_value *ucontrol)
2794 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2795 struct soc_mixer_control *mc =
2796 (struct soc_mixer_control *)kcontrol->private_value;
2798 unsigned int reg = mc->reg;
2799 unsigned int reg2 = mc->rreg;
2800 unsigned int shift = mc->shift;
2801 unsigned int rshift = mc->rshift;
2804 int mask = (1 << (fls(min + max) - 1)) - 1;
2806 unsigned short val, val_mask, val2 = 0;
2808 val_mask = mask << shift;
2809 val = (ucontrol->value.integer.value[0] + min) & mask;
2812 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2816 if (snd_soc_volsw_is_stereo(mc)) {
2817 val_mask = mask << rshift;
2818 val2 = (ucontrol->value.integer.value[1] + min) & mask;
2819 val2 = val2 << rshift;
2821 if (snd_soc_update_bits_locked(codec, reg2, val_mask, val2))
2826 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
2829 * snd_soc_info_volsw_s8 - signed mixer info callback
2830 * @kcontrol: mixer control
2831 * @uinfo: control element information
2833 * Callback to provide information about a signed mixer control.
2835 * Returns 0 for success.
2837 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2838 struct snd_ctl_elem_info *uinfo)
2840 struct soc_mixer_control *mc =
2841 (struct soc_mixer_control *)kcontrol->private_value;
2845 if (!mc->platform_max)
2846 mc->platform_max = mc->max;
2847 platform_max = mc->platform_max;
2849 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2851 uinfo->value.integer.min = 0;
2852 uinfo->value.integer.max = platform_max - min;
2855 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2858 * snd_soc_get_volsw_s8 - signed mixer get callback
2859 * @kcontrol: mixer control
2860 * @ucontrol: control element information
2862 * Callback to get the value of a signed mixer control.
2864 * Returns 0 for success.
2866 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2867 struct snd_ctl_elem_value *ucontrol)
2869 struct soc_mixer_control *mc =
2870 (struct soc_mixer_control *)kcontrol->private_value;
2871 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2872 unsigned int reg = mc->reg;
2874 int val = snd_soc_read(codec, reg);
2876 ucontrol->value.integer.value[0] =
2877 ((signed char)(val & 0xff))-min;
2878 ucontrol->value.integer.value[1] =
2879 ((signed char)((val >> 8) & 0xff))-min;
2882 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2885 * snd_soc_put_volsw_sgn - signed mixer put callback
2886 * @kcontrol: mixer control
2887 * @ucontrol: control element information
2889 * Callback to set the value of a signed mixer control.
2891 * Returns 0 for success.
2893 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2894 struct snd_ctl_elem_value *ucontrol)
2896 struct soc_mixer_control *mc =
2897 (struct soc_mixer_control *)kcontrol->private_value;
2898 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2899 unsigned int reg = mc->reg;
2903 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2904 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2906 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
2908 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2911 * snd_soc_info_volsw_range - single mixer info callback with range.
2912 * @kcontrol: mixer control
2913 * @uinfo: control element information
2915 * Callback to provide information, within a range, about a single
2918 * returns 0 for success.
2920 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
2921 struct snd_ctl_elem_info *uinfo)
2923 struct soc_mixer_control *mc =
2924 (struct soc_mixer_control *)kcontrol->private_value;
2928 if (!mc->platform_max)
2929 mc->platform_max = mc->max;
2930 platform_max = mc->platform_max;
2932 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2933 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2934 uinfo->value.integer.min = 0;
2935 uinfo->value.integer.max = platform_max - min;
2939 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
2942 * snd_soc_put_volsw_range - single mixer put value callback with range.
2943 * @kcontrol: mixer control
2944 * @ucontrol: control element information
2946 * Callback to set the value, within a range, for a single mixer control.
2948 * Returns 0 for success.
2950 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
2951 struct snd_ctl_elem_value *ucontrol)
2953 struct soc_mixer_control *mc =
2954 (struct soc_mixer_control *)kcontrol->private_value;
2955 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2956 unsigned int reg = mc->reg;
2957 unsigned int rreg = mc->rreg;
2958 unsigned int shift = mc->shift;
2961 unsigned int mask = (1 << fls(max)) - 1;
2962 unsigned int invert = mc->invert;
2963 unsigned int val, val_mask;
2966 val = ((ucontrol->value.integer.value[0] + min) & mask);
2969 val_mask = mask << shift;
2972 ret = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2976 if (snd_soc_volsw_is_stereo(mc)) {
2977 val = ((ucontrol->value.integer.value[1] + min) & mask);
2980 val_mask = mask << shift;
2983 ret = snd_soc_update_bits_locked(codec, rreg, val_mask, val);
2988 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
2991 * snd_soc_get_volsw_range - single mixer get callback with range
2992 * @kcontrol: mixer control
2993 * @ucontrol: control element information
2995 * Callback to get the value, within a range, of a single mixer control.
2997 * Returns 0 for success.
2999 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
3000 struct snd_ctl_elem_value *ucontrol)
3002 struct soc_mixer_control *mc =
3003 (struct soc_mixer_control *)kcontrol->private_value;
3004 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3005 unsigned int reg = mc->reg;
3006 unsigned int rreg = mc->rreg;
3007 unsigned int shift = mc->shift;
3010 unsigned int mask = (1 << fls(max)) - 1;
3011 unsigned int invert = mc->invert;
3013 ucontrol->value.integer.value[0] =
3014 (snd_soc_read(codec, reg) >> shift) & mask;
3016 ucontrol->value.integer.value[0] =
3017 max - ucontrol->value.integer.value[0];
3018 ucontrol->value.integer.value[0] =
3019 ucontrol->value.integer.value[0] - min;
3021 if (snd_soc_volsw_is_stereo(mc)) {
3022 ucontrol->value.integer.value[1] =
3023 (snd_soc_read(codec, rreg) >> shift) & mask;
3025 ucontrol->value.integer.value[1] =
3026 max - ucontrol->value.integer.value[1];
3027 ucontrol->value.integer.value[1] =
3028 ucontrol->value.integer.value[1] - min;
3033 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
3036 * snd_soc_limit_volume - Set new limit to an existing volume control.
3038 * @codec: where to look for the control
3039 * @name: Name of the control
3040 * @max: new maximum limit
3042 * Return 0 for success, else error.
3044 int snd_soc_limit_volume(struct snd_soc_codec *codec,
3045 const char *name, int max)
3047 struct snd_card *card = codec->card->snd_card;
3048 struct snd_kcontrol *kctl;
3049 struct soc_mixer_control *mc;
3053 /* Sanity check for name and max */
3054 if (unlikely(!name || max <= 0))
3057 list_for_each_entry(kctl, &card->controls, list) {
3058 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
3064 mc = (struct soc_mixer_control *)kctl->private_value;
3065 if (max <= mc->max) {
3066 mc->platform_max = max;
3072 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
3074 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
3075 struct snd_ctl_elem_info *uinfo)
3077 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3078 struct soc_bytes *params = (void *)kcontrol->private_value;
3080 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
3081 uinfo->count = params->num_regs * codec->val_bytes;
3085 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
3087 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
3088 struct snd_ctl_elem_value *ucontrol)
3090 struct soc_bytes *params = (void *)kcontrol->private_value;
3091 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3094 if (codec->using_regmap)
3095 ret = regmap_raw_read(codec->control_data, params->base,
3096 ucontrol->value.bytes.data,
3097 params->num_regs * codec->val_bytes);
3101 /* Hide any masked bytes to ensure consistent data reporting */
3102 if (ret == 0 && params->mask) {
3103 switch (codec->val_bytes) {
3105 ucontrol->value.bytes.data[0] &= ~params->mask;
3108 ((u16 *)(&ucontrol->value.bytes.data))[0]
3112 ((u32 *)(&ucontrol->value.bytes.data))[0]
3122 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
3124 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
3125 struct snd_ctl_elem_value *ucontrol)
3127 struct soc_bytes *params = (void *)kcontrol->private_value;
3128 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3133 if (!codec->using_regmap)
3136 len = params->num_regs * codec->val_bytes;
3138 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
3143 * If we've got a mask then we need to preserve the register
3144 * bits. We shouldn't modify the incoming data so take a
3148 ret = regmap_read(codec->control_data, params->base, &val);
3152 val &= params->mask;
3154 switch (codec->val_bytes) {
3156 ((u8 *)data)[0] &= ~params->mask;
3157 ((u8 *)data)[0] |= val;
3160 ((u16 *)data)[0] &= cpu_to_be16(~params->mask);
3161 ((u16 *)data)[0] |= cpu_to_be16(val);
3164 ((u32 *)data)[0] &= cpu_to_be32(~params->mask);
3165 ((u32 *)data)[0] |= cpu_to_be32(val);
3173 ret = regmap_raw_write(codec->control_data, params->base,
3181 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
3184 * snd_soc_info_xr_sx - signed multi register info callback
3185 * @kcontrol: mreg control
3186 * @uinfo: control element information
3188 * Callback to provide information of a control that can
3189 * span multiple codec registers which together
3190 * forms a single signed value in a MSB/LSB manner.
3192 * Returns 0 for success.
3194 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
3195 struct snd_ctl_elem_info *uinfo)
3197 struct soc_mreg_control *mc =
3198 (struct soc_mreg_control *)kcontrol->private_value;
3199 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3201 uinfo->value.integer.min = mc->min;
3202 uinfo->value.integer.max = mc->max;
3206 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
3209 * snd_soc_get_xr_sx - signed multi register get callback
3210 * @kcontrol: mreg control
3211 * @ucontrol: control element information
3213 * Callback to get the value of a control that can span
3214 * multiple codec registers which together forms a single
3215 * signed value in a MSB/LSB manner. The control supports
3216 * specifying total no of bits used to allow for bitfields
3217 * across the multiple codec registers.
3219 * Returns 0 for success.
3221 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
3222 struct snd_ctl_elem_value *ucontrol)
3224 struct soc_mreg_control *mc =
3225 (struct soc_mreg_control *)kcontrol->private_value;
3226 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3227 unsigned int regbase = mc->regbase;
3228 unsigned int regcount = mc->regcount;
3229 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3230 unsigned int regwmask = (1<<regwshift)-1;
3231 unsigned int invert = mc->invert;
3232 unsigned long mask = (1UL<<mc->nbits)-1;
3236 unsigned long regval;
3239 for (i = 0; i < regcount; i++) {
3240 regval = snd_soc_read(codec, regbase+i) & regwmask;
3241 val |= regval << (regwshift*(regcount-i-1));
3244 if (min < 0 && val > max)
3248 ucontrol->value.integer.value[0] = val;
3252 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
3255 * snd_soc_put_xr_sx - signed multi register get callback
3256 * @kcontrol: mreg control
3257 * @ucontrol: control element information
3259 * Callback to set the value of a control that can span
3260 * multiple codec registers which together forms a single
3261 * signed value in a MSB/LSB manner. The control supports
3262 * specifying total no of bits used to allow for bitfields
3263 * across the multiple codec registers.
3265 * Returns 0 for success.
3267 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
3268 struct snd_ctl_elem_value *ucontrol)
3270 struct soc_mreg_control *mc =
3271 (struct soc_mreg_control *)kcontrol->private_value;
3272 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3273 unsigned int regbase = mc->regbase;
3274 unsigned int regcount = mc->regcount;
3275 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3276 unsigned int regwmask = (1<<regwshift)-1;
3277 unsigned int invert = mc->invert;
3278 unsigned long mask = (1UL<<mc->nbits)-1;
3280 long val = ucontrol->value.integer.value[0];
3281 unsigned int i, regval, regmask;
3287 for (i = 0; i < regcount; i++) {
3288 regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
3289 regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
3290 err = snd_soc_update_bits_locked(codec, regbase+i,
3298 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
3301 * snd_soc_get_strobe - strobe get callback
3302 * @kcontrol: mixer control
3303 * @ucontrol: control element information
3305 * Callback get the value of a strobe mixer control.
3307 * Returns 0 for success.
3309 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
3310 struct snd_ctl_elem_value *ucontrol)
3312 struct soc_mixer_control *mc =
3313 (struct soc_mixer_control *)kcontrol->private_value;
3314 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3315 unsigned int reg = mc->reg;
3316 unsigned int shift = mc->shift;
3317 unsigned int mask = 1 << shift;
3318 unsigned int invert = mc->invert != 0;
3319 unsigned int val = snd_soc_read(codec, reg) & mask;
3321 if (shift != 0 && val != 0)
3323 ucontrol->value.enumerated.item[0] = val ^ invert;
3327 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
3330 * snd_soc_put_strobe - strobe put callback
3331 * @kcontrol: mixer control
3332 * @ucontrol: control element information
3334 * Callback strobe a register bit to high then low (or the inverse)
3335 * in one pass of a single mixer enum control.
3337 * Returns 1 for success.
3339 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
3340 struct snd_ctl_elem_value *ucontrol)
3342 struct soc_mixer_control *mc =
3343 (struct soc_mixer_control *)kcontrol->private_value;
3344 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3345 unsigned int reg = mc->reg;
3346 unsigned int shift = mc->shift;
3347 unsigned int mask = 1 << shift;
3348 unsigned int invert = mc->invert != 0;
3349 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
3350 unsigned int val1 = (strobe ^ invert) ? mask : 0;
3351 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
3354 err = snd_soc_update_bits_locked(codec, reg, mask, val1);
3358 err = snd_soc_update_bits_locked(codec, reg, mask, val2);
3361 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);
3364 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3366 * @clk_id: DAI specific clock ID
3367 * @freq: new clock frequency in Hz
3368 * @dir: new clock direction - input/output.
3370 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3372 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
3373 unsigned int freq, int dir)
3375 if (dai->driver && dai->driver->ops->set_sysclk)
3376 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
3377 else if (dai->codec && dai->codec->driver->set_sysclk)
3378 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
3383 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
3386 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3388 * @clk_id: DAI specific clock ID
3389 * @source: Source for the clock
3390 * @freq: new clock frequency in Hz
3391 * @dir: new clock direction - input/output.
3393 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3395 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
3396 int source, unsigned int freq, int dir)
3398 if (codec->driver->set_sysclk)
3399 return codec->driver->set_sysclk(codec, clk_id, source,
3404 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
3407 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3409 * @div_id: DAI specific clock divider ID
3410 * @div: new clock divisor.
3412 * Configures the clock dividers. This is used to derive the best DAI bit and
3413 * frame clocks from the system or master clock. It's best to set the DAI bit
3414 * and frame clocks as low as possible to save system power.
3416 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
3417 int div_id, int div)
3419 if (dai->driver && dai->driver->ops->set_clkdiv)
3420 return dai->driver->ops->set_clkdiv(dai, div_id, div);
3424 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
3427 * snd_soc_dai_set_pll - configure DAI PLL.
3429 * @pll_id: DAI specific PLL ID
3430 * @source: DAI specific source for the PLL
3431 * @freq_in: PLL input clock frequency in Hz
3432 * @freq_out: requested PLL output clock frequency in Hz
3434 * Configures and enables PLL to generate output clock based on input clock.
3436 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
3437 unsigned int freq_in, unsigned int freq_out)
3439 if (dai->driver && dai->driver->ops->set_pll)
3440 return dai->driver->ops->set_pll(dai, pll_id, source,
3442 else if (dai->codec && dai->codec->driver->set_pll)
3443 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
3448 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
3451 * snd_soc_codec_set_pll - configure codec PLL.
3453 * @pll_id: DAI specific PLL ID
3454 * @source: DAI specific source for the PLL
3455 * @freq_in: PLL input clock frequency in Hz
3456 * @freq_out: requested PLL output clock frequency in Hz
3458 * Configures and enables PLL to generate output clock based on input clock.
3460 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
3461 unsigned int freq_in, unsigned int freq_out)
3463 if (codec->driver->set_pll)
3464 return codec->driver->set_pll(codec, pll_id, source,
3469 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
3472 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3474 * @fmt: SND_SOC_DAIFMT_ format value.
3476 * Configures the DAI hardware format and clocking.
3478 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
3480 if (dai->driver == NULL)
3482 if (dai->driver->ops->set_fmt == NULL)
3484 return dai->driver->ops->set_fmt(dai, fmt);
3486 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
3489 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3491 * @tx_mask: bitmask representing active TX slots.
3492 * @rx_mask: bitmask representing active RX slots.
3493 * @slots: Number of slots in use.
3494 * @slot_width: Width in bits for each slot.
3496 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3499 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
3500 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3502 if (dai->driver && dai->driver->ops->set_tdm_slot)
3503 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3508 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3511 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3513 * @tx_num: how many TX channels
3514 * @tx_slot: pointer to an array which imply the TX slot number channel
3516 * @rx_num: how many RX channels
3517 * @rx_slot: pointer to an array which imply the RX slot number channel
3520 * configure the relationship between channel number and TDM slot number.
3522 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3523 unsigned int tx_num, unsigned int *tx_slot,
3524 unsigned int rx_num, unsigned int *rx_slot)
3526 if (dai->driver && dai->driver->ops->set_channel_map)
3527 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3532 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3535 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3537 * @tristate: tristate enable
3539 * Tristates the DAI so that others can use it.
3541 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3543 if (dai->driver && dai->driver->ops->set_tristate)
3544 return dai->driver->ops->set_tristate(dai, tristate);
3548 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3551 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3553 * @mute: mute enable
3554 * @direction: stream to mute
3556 * Mutes the DAI DAC.
3558 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
3564 if (dai->driver->ops->mute_stream)
3565 return dai->driver->ops->mute_stream(dai, mute, direction);
3566 else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
3567 dai->driver->ops->digital_mute)
3568 return dai->driver->ops->digital_mute(dai, mute);
3572 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3575 * snd_soc_register_card - Register a card with the ASoC core
3577 * @card: Card to register
3580 int snd_soc_register_card(struct snd_soc_card *card)
3584 if (!card->name || !card->dev)
3587 for (i = 0; i < card->num_links; i++) {
3588 struct snd_soc_dai_link *link = &card->dai_link[i];
3591 * Codec must be specified by 1 of name or OF node,
3592 * not both or neither.
3594 if (!!link->codec_name == !!link->codec_of_node) {
3595 dev_err(card->dev, "ASoC: Neither/both codec"
3596 " name/of_node are set for %s\n", link->name);
3599 /* Codec DAI name must be specified */
3600 if (!link->codec_dai_name) {
3601 dev_err(card->dev, "ASoC: codec_dai_name not"
3602 " set for %s\n", link->name);
3607 * Platform may be specified by either name or OF node, but
3608 * can be left unspecified, and a dummy platform will be used.
3610 if (link->platform_name && link->platform_of_node) {
3611 dev_err(card->dev, "ASoC: Both platform name/of_node"
3612 " are set for %s\n", link->name);
3617 * CPU device may be specified by either name or OF node, but
3618 * can be left unspecified, and will be matched based on DAI
3621 if (link->cpu_name && link->cpu_of_node) {
3622 dev_err(card->dev, "ASoC: Neither/both "
3623 "cpu name/of_node are set for %s\n",link->name);
3627 * At least one of CPU DAI name or CPU device name/node must be
3630 if (!link->cpu_dai_name &&
3631 !(link->cpu_name || link->cpu_of_node)) {
3632 dev_err(card->dev, "ASoC: Neither cpu_dai_name nor "
3633 "cpu_name/of_node are set for %s\n", link->name);
3638 dev_set_drvdata(card->dev, card);
3640 snd_soc_initialize_card_lists(card);
3642 soc_init_card_debugfs(card);
3644 card->rtd = devm_kzalloc(card->dev,
3645 sizeof(struct snd_soc_pcm_runtime) *
3646 (card->num_links + card->num_aux_devs),
3648 if (card->rtd == NULL)
3651 card->rtd_aux = &card->rtd[card->num_links];
3653 for (i = 0; i < card->num_links; i++)
3654 card->rtd[i].dai_link = &card->dai_link[i];
3656 INIT_LIST_HEAD(&card->list);
3657 INIT_LIST_HEAD(&card->dapm_dirty);
3658 card->instantiated = 0;
3659 mutex_init(&card->mutex);
3660 mutex_init(&card->dapm_mutex);
3662 ret = snd_soc_instantiate_card(card);
3664 soc_cleanup_card_debugfs(card);
3668 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3671 * snd_soc_unregister_card - Unregister a card with the ASoC core
3673 * @card: Card to unregister
3676 int snd_soc_unregister_card(struct snd_soc_card *card)
3678 if (card->instantiated)
3679 soc_cleanup_card_resources(card);
3680 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
3684 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3687 * Simplify DAI link configuration by removing ".-1" from device names
3688 * and sanitizing names.
3690 static char *fmt_single_name(struct device *dev, int *id)
3692 char *found, name[NAME_SIZE];
3695 if (dev_name(dev) == NULL)
3698 strlcpy(name, dev_name(dev), NAME_SIZE);
3700 /* are we a "%s.%d" name (platform and SPI components) */
3701 found = strstr(name, dev->driver->name);
3704 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3706 /* discard ID from name if ID == -1 */
3708 found[strlen(dev->driver->name)] = '\0';
3712 /* I2C component devices are named "bus-addr" */
3713 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3714 char tmp[NAME_SIZE];
3716 /* create unique ID number from I2C addr and bus */
3717 *id = ((id1 & 0xffff) << 16) + id2;
3719 /* sanitize component name for DAI link creation */
3720 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3721 strlcpy(name, tmp, NAME_SIZE);
3726 return kstrdup(name, GFP_KERNEL);
3730 * Simplify DAI link naming for single devices with multiple DAIs by removing
3731 * any ".-1" and using the DAI name (instead of device name).
3733 static inline char *fmt_multiple_name(struct device *dev,
3734 struct snd_soc_dai_driver *dai_drv)
3736 if (dai_drv->name == NULL) {
3737 dev_err(dev, "ASoC: error - multiple DAI %s registered with"
3738 " no name\n", dev_name(dev));
3742 return kstrdup(dai_drv->name, GFP_KERNEL);
3746 * snd_soc_register_dai - Register a DAI with the ASoC core
3748 * @dai: DAI to register
3750 static int snd_soc_register_dai(struct device *dev,
3751 struct snd_soc_dai_driver *dai_drv)
3753 struct snd_soc_codec *codec;
3754 struct snd_soc_dai *dai;
3756 dev_dbg(dev, "ASoC: dai register %s\n", dev_name(dev));
3758 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3762 /* create DAI component name */
3763 dai->name = fmt_single_name(dev, &dai->id);
3764 if (dai->name == NULL) {
3770 dai->driver = dai_drv;
3771 dai->dapm.dev = dev;
3772 if (!dai->driver->ops)
3773 dai->driver->ops = &null_dai_ops;
3775 mutex_lock(&client_mutex);
3777 list_for_each_entry(codec, &codec_list, list) {
3778 if (codec->dev == dev) {
3779 dev_dbg(dev, "ASoC: Mapped DAI %s to CODEC %s\n",
3780 dai->name, codec->name);
3787 dai->dapm.idle_bias_off = 1;
3789 list_add(&dai->list, &dai_list);
3791 mutex_unlock(&client_mutex);
3793 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
3799 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3801 * @dai: DAI to unregister
3803 static void snd_soc_unregister_dai(struct device *dev)
3805 struct snd_soc_dai *dai;
3807 list_for_each_entry(dai, &dai_list, list) {
3808 if (dev == dai->dev)
3814 mutex_lock(&client_mutex);
3815 list_del(&dai->list);
3816 mutex_unlock(&client_mutex);
3818 dev_dbg(dev, "ASoC: Unregistered DAI '%s'\n", dai->name);
3824 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3826 * @dai: Array of DAIs to register
3827 * @count: Number of DAIs
3829 static int snd_soc_register_dais(struct device *dev,
3830 struct snd_soc_dai_driver *dai_drv, size_t count)
3832 struct snd_soc_codec *codec;
3833 struct snd_soc_dai *dai;
3836 dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
3838 for (i = 0; i < count; i++) {
3840 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3846 /* create DAI component name */
3847 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3848 if (dai->name == NULL) {
3855 dai->driver = &dai_drv[i];
3856 if (dai->driver->id)
3857 dai->id = dai->driver->id;
3860 dai->dapm.dev = dev;
3861 if (!dai->driver->ops)
3862 dai->driver->ops = &null_dai_ops;
3864 mutex_lock(&client_mutex);
3866 list_for_each_entry(codec, &codec_list, list) {
3867 if (codec->dev == dev) {
3868 dev_dbg(dev, "ASoC: Mapped DAI %s to "
3869 "CODEC %s\n", dai->name, codec->name);
3876 dai->dapm.idle_bias_off = 1;
3878 list_add(&dai->list, &dai_list);
3880 mutex_unlock(&client_mutex);
3882 dev_dbg(dai->dev, "ASoC: Registered DAI '%s'\n", dai->name);
3888 for (i--; i >= 0; i--)
3889 snd_soc_unregister_dai(dev);
3895 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3897 * @dai: Array of DAIs to unregister
3898 * @count: Number of DAIs
3900 static void snd_soc_unregister_dais(struct device *dev, size_t count)
3904 for (i = 0; i < count; i++)
3905 snd_soc_unregister_dai(dev);
3909 * snd_soc_add_platform - Add a platform to the ASoC core
3910 * @dev: The parent device for the platform
3911 * @platform: The platform to add
3912 * @platform_driver: The driver for the platform
3914 int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
3915 const struct snd_soc_platform_driver *platform_drv)
3917 /* create platform component name */
3918 platform->name = fmt_single_name(dev, &platform->id);
3919 if (platform->name == NULL) {
3924 platform->dev = dev;
3925 platform->driver = platform_drv;
3926 platform->dapm.dev = dev;
3927 platform->dapm.platform = platform;
3928 platform->dapm.stream_event = platform_drv->stream_event;
3929 mutex_init(&platform->mutex);
3931 mutex_lock(&client_mutex);
3932 list_add(&platform->list, &platform_list);
3933 mutex_unlock(&client_mutex);
3935 dev_dbg(dev, "ASoC: Registered platform '%s'\n", platform->name);
3939 EXPORT_SYMBOL_GPL(snd_soc_add_platform);
3942 * snd_soc_register_platform - Register a platform with the ASoC core
3944 * @platform: platform to register
3946 int snd_soc_register_platform(struct device *dev,
3947 const struct snd_soc_platform_driver *platform_drv)
3949 struct snd_soc_platform *platform;
3952 dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
3954 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3955 if (platform == NULL)
3958 ret = snd_soc_add_platform(dev, platform, platform_drv);
3964 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3967 * snd_soc_remove_platform - Remove a platform from the ASoC core
3968 * @platform: the platform to remove
3970 void snd_soc_remove_platform(struct snd_soc_platform *platform)
3972 mutex_lock(&client_mutex);
3973 list_del(&platform->list);
3974 mutex_unlock(&client_mutex);
3976 dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
3978 kfree(platform->name);
3980 EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
3982 struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
3984 struct snd_soc_platform *platform;
3986 list_for_each_entry(platform, &platform_list, list) {
3987 if (dev == platform->dev)
3993 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
3996 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3998 * @platform: platform to unregister
4000 void snd_soc_unregister_platform(struct device *dev)
4002 struct snd_soc_platform *platform;
4004 platform = snd_soc_lookup_platform(dev);
4008 snd_soc_remove_platform(platform);
4011 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
4013 static u64 codec_format_map[] = {
4014 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
4015 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
4016 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
4017 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
4018 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
4019 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
4020 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4021 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4022 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
4023 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
4024 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
4025 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
4026 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
4027 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
4028 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
4029 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
4032 /* Fix up the DAI formats for endianness: codecs don't actually see
4033 * the endianness of the data but we're using the CPU format
4034 * definitions which do need to include endianness so we ensure that
4035 * codec DAIs always have both big and little endian variants set.
4037 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
4041 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
4042 if (stream->formats & codec_format_map[i])
4043 stream->formats |= codec_format_map[i];
4047 * snd_soc_register_codec - Register a codec with the ASoC core
4049 * @codec: codec to register
4051 int snd_soc_register_codec(struct device *dev,
4052 const struct snd_soc_codec_driver *codec_drv,
4053 struct snd_soc_dai_driver *dai_drv,
4057 struct snd_soc_codec *codec;
4060 dev_dbg(dev, "codec register %s\n", dev_name(dev));
4062 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
4066 /* create CODEC component name */
4067 codec->name = fmt_single_name(dev, &codec->id);
4068 if (codec->name == NULL) {
4073 if (codec_drv->compress_type)
4074 codec->compress_type = codec_drv->compress_type;
4076 codec->compress_type = SND_SOC_FLAT_COMPRESSION;
4078 codec->write = codec_drv->write;
4079 codec->read = codec_drv->read;
4080 codec->volatile_register = codec_drv->volatile_register;
4081 codec->readable_register = codec_drv->readable_register;
4082 codec->writable_register = codec_drv->writable_register;
4083 codec->ignore_pmdown_time = codec_drv->ignore_pmdown_time;
4084 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
4085 codec->dapm.dev = dev;
4086 codec->dapm.codec = codec;
4087 codec->dapm.seq_notifier = codec_drv->seq_notifier;
4088 codec->dapm.stream_event = codec_drv->stream_event;
4090 codec->driver = codec_drv;
4091 codec->num_dai = num_dai;
4092 mutex_init(&codec->mutex);
4094 /* allocate CODEC register cache */
4095 if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
4096 reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
4097 codec->reg_size = reg_size;
4098 /* it is necessary to make a copy of the default register cache
4099 * because in the case of using a compression type that requires
4100 * the default register cache to be marked as the
4101 * kernel might have freed the array by the time we initialize
4104 if (codec_drv->reg_cache_default) {
4105 codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
4106 reg_size, GFP_KERNEL);
4107 if (!codec->reg_def_copy) {
4109 goto fail_codec_name;
4114 if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
4115 if (!codec->volatile_register)
4116 codec->volatile_register = snd_soc_default_volatile_register;
4117 if (!codec->readable_register)
4118 codec->readable_register = snd_soc_default_readable_register;
4119 if (!codec->writable_register)
4120 codec->writable_register = snd_soc_default_writable_register;
4123 for (i = 0; i < num_dai; i++) {
4124 fixup_codec_formats(&dai_drv[i].playback);
4125 fixup_codec_formats(&dai_drv[i].capture);
4128 mutex_lock(&client_mutex);
4129 list_add(&codec->list, &codec_list);
4130 mutex_unlock(&client_mutex);
4132 /* register any DAIs */
4133 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
4135 dev_err(codec->dev, "ASoC: Failed to regster DAIs: %d\n", ret);
4136 goto fail_codec_name;
4139 dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n", codec->name);
4143 mutex_lock(&client_mutex);
4144 list_del(&codec->list);
4145 mutex_unlock(&client_mutex);
4152 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
4155 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4157 * @codec: codec to unregister
4159 void snd_soc_unregister_codec(struct device *dev)
4161 struct snd_soc_codec *codec;
4163 list_for_each_entry(codec, &codec_list, list) {
4164 if (dev == codec->dev)
4170 snd_soc_unregister_dais(dev, codec->num_dai);
4172 mutex_lock(&client_mutex);
4173 list_del(&codec->list);
4174 mutex_unlock(&client_mutex);
4176 dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n", codec->name);
4178 snd_soc_cache_exit(codec);
4179 kfree(codec->reg_def_copy);
4183 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
4187 * snd_soc_register_component - Register a component with the ASoC core
4190 int snd_soc_register_component(struct device *dev,
4191 const struct snd_soc_component_driver *cmpnt_drv,
4192 struct snd_soc_dai_driver *dai_drv,
4195 struct snd_soc_component *cmpnt;
4198 dev_dbg(dev, "component register %s\n", dev_name(dev));
4200 cmpnt = devm_kzalloc(dev, sizeof(*cmpnt), GFP_KERNEL);
4202 dev_err(dev, "ASoC: Failed to allocate memory\n");
4206 cmpnt->name = fmt_single_name(dev, &cmpnt->id);
4208 dev_err(dev, "ASoC: Failed to simplifying name\n");
4213 cmpnt->driver = cmpnt_drv;
4214 cmpnt->num_dai = num_dai;
4217 * snd_soc_register_dai() uses fmt_single_name(), and
4218 * snd_soc_register_dais() uses fmt_multiple_name()
4219 * for dai->name which is used for name based matching
4222 ret = snd_soc_register_dai(dev, dai_drv);
4224 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
4226 dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret);
4227 goto error_component_name;
4230 mutex_lock(&client_mutex);
4231 list_add(&cmpnt->list, &component_list);
4232 mutex_unlock(&client_mutex);
4234 dev_dbg(cmpnt->dev, "ASoC: Registered component '%s'\n", cmpnt->name);
4238 error_component_name:
4243 EXPORT_SYMBOL_GPL(snd_soc_register_component);
4246 * snd_soc_unregister_component - Unregister a component from the ASoC core
4249 void snd_soc_unregister_component(struct device *dev)
4251 struct snd_soc_component *cmpnt;
4253 list_for_each_entry(cmpnt, &component_list, list) {
4254 if (dev == cmpnt->dev)
4260 snd_soc_unregister_dais(dev, cmpnt->num_dai);
4262 mutex_lock(&client_mutex);
4263 list_del(&cmpnt->list);
4264 mutex_unlock(&client_mutex);
4266 dev_dbg(dev, "ASoC: Unregistered component '%s'\n", cmpnt->name);
4269 EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
4271 /* Retrieve a card's name from device tree */
4272 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
4273 const char *propname)
4275 struct device_node *np = card->dev->of_node;
4278 ret = of_property_read_string_index(np, propname, 0, &card->name);
4280 * EINVAL means the property does not exist. This is fine providing
4281 * card->name was previously set, which is checked later in
4282 * snd_soc_register_card.
4284 if (ret < 0 && ret != -EINVAL) {
4286 "ASoC: Property '%s' could not be read: %d\n",
4293 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
4295 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
4296 const char *propname)
4298 struct device_node *np = card->dev->of_node;
4300 struct snd_soc_dapm_route *routes;
4303 num_routes = of_property_count_strings(np, propname);
4304 if (num_routes < 0 || num_routes & 1) {
4305 dev_err(card->dev, "ASoC: Property '%s' does not exist or its"
4306 " length is not even\n", propname);
4311 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4316 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
4320 "ASoC: Could not allocate DAPM route table\n");
4324 for (i = 0; i < num_routes; i++) {
4325 ret = of_property_read_string_index(np, propname,
4326 2 * i, &routes[i].sink);
4329 "ASoC: Property '%s' index %d could not be read: %d\n",
4330 propname, 2 * i, ret);
4333 ret = of_property_read_string_index(np, propname,
4334 (2 * i) + 1, &routes[i].source);
4337 "ASoC: Property '%s' index %d could not be read: %d\n",
4338 propname, (2 * i) + 1, ret);
4343 card->num_dapm_routes = num_routes;
4344 card->dapm_routes = routes;
4348 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
4350 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
4355 unsigned int format = 0;
4361 } of_fmt_table[] = {
4362 { "i2s", SND_SOC_DAIFMT_I2S },
4363 { "right_j", SND_SOC_DAIFMT_RIGHT_J },
4364 { "left_j", SND_SOC_DAIFMT_LEFT_J },
4365 { "dsp_a", SND_SOC_DAIFMT_DSP_A },
4366 { "dsp_b", SND_SOC_DAIFMT_DSP_B },
4367 { "ac97", SND_SOC_DAIFMT_AC97 },
4368 { "pdm", SND_SOC_DAIFMT_PDM},
4369 { "msb", SND_SOC_DAIFMT_MSB },
4370 { "lsb", SND_SOC_DAIFMT_LSB },
4377 * check "[prefix]format = xxx"
4378 * SND_SOC_DAIFMT_FORMAT_MASK area
4380 snprintf(prop, sizeof(prop), "%sformat", prefix);
4381 ret = of_property_read_string(np, prop, &str);
4383 for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
4384 if (strcmp(str, of_fmt_table[i].name) == 0) {
4385 format |= of_fmt_table[i].val;
4392 * check "[prefix]continuous-clock"
4393 * SND_SOC_DAIFMT_CLOCK_MASK area
4395 snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
4396 if (of_get_property(np, prop, NULL))
4397 format |= SND_SOC_DAIFMT_CONT;
4399 format |= SND_SOC_DAIFMT_GATED;
4402 * check "[prefix]bitclock-inversion"
4403 * check "[prefix]frame-inversion"
4404 * SND_SOC_DAIFMT_INV_MASK area
4406 snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
4407 bit = !!of_get_property(np, prop, NULL);
4409 snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
4410 frame = !!of_get_property(np, prop, NULL);
4412 switch ((bit << 4) + frame) {
4414 format |= SND_SOC_DAIFMT_IB_IF;
4417 format |= SND_SOC_DAIFMT_IB_NF;
4420 format |= SND_SOC_DAIFMT_NB_IF;
4423 /* SND_SOC_DAIFMT_NB_NF is default */
4428 * check "[prefix]bitclock-master"
4429 * check "[prefix]frame-master"
4430 * SND_SOC_DAIFMT_MASTER_MASK area
4432 snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
4433 bit = !!of_get_property(np, prop, NULL);
4435 snprintf(prop, sizeof(prop), "%sframe-master", prefix);
4436 frame = !!of_get_property(np, prop, NULL);
4438 switch ((bit << 4) + frame) {
4440 format |= SND_SOC_DAIFMT_CBM_CFM;
4443 format |= SND_SOC_DAIFMT_CBM_CFS;
4446 format |= SND_SOC_DAIFMT_CBS_CFM;
4449 format |= SND_SOC_DAIFMT_CBS_CFS;
4455 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
4457 static int __init snd_soc_init(void)
4459 #ifdef CONFIG_DEBUG_FS
4460 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
4461 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
4462 pr_warn("ASoC: Failed to create debugfs directory\n");
4463 snd_soc_debugfs_root = NULL;
4466 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
4468 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4470 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
4472 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4474 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
4475 &platform_list_fops))
4476 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4479 snd_soc_util_init();
4481 return platform_driver_register(&soc_driver);
4483 module_init(snd_soc_init);
4485 static void __exit snd_soc_exit(void)
4487 snd_soc_util_exit();
4489 #ifdef CONFIG_DEBUG_FS
4490 debugfs_remove_recursive(snd_soc_debugfs_root);
4492 platform_driver_unregister(&soc_driver);
4494 module_exit(snd_soc_exit);
4496 /* Module information */
4497 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4498 MODULE_DESCRIPTION("ALSA SoC Core");
4499 MODULE_LICENSE("GPL");
4500 MODULE_ALIAS("platform:soc-audio");