2 * soc-core.c -- ALSA SoC Audio Layer
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 * o Add hw rules to enforce rates, etc.
20 * o More testing with other codecs/machines.
21 * o Add more codecs and platforms to ensure good API coverage.
22 * o Support TDM on PCM and I2S
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
30 #include <linux/bitops.h>
31 #include <linux/debugfs.h>
32 #include <linux/platform_device.h>
33 #include <linux/pinctrl/consumer.h>
34 #include <linux/ctype.h>
35 #include <linux/slab.h>
37 #include <linux/gpio.h>
38 #include <linux/of_gpio.h>
39 #include <sound/ac97_codec.h>
40 #include <sound/core.h>
41 #include <sound/jack.h>
42 #include <sound/pcm.h>
43 #include <sound/pcm_params.h>
44 #include <sound/soc.h>
45 #include <sound/soc-dpcm.h>
46 #include <sound/initval.h>
48 #define CREATE_TRACE_POINTS
49 #include <trace/events/asoc.h>
53 #ifdef CONFIG_DEBUG_FS
54 struct dentry *snd_soc_debugfs_root;
55 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
58 static DEFINE_MUTEX(client_mutex);
59 static LIST_HEAD(dai_list);
60 static LIST_HEAD(platform_list);
61 static LIST_HEAD(codec_list);
62 static LIST_HEAD(component_list);
65 * This is a timeout to do a DAPM powerdown after a stream is closed().
66 * It can be used to eliminate pops between different playback streams, e.g.
67 * between two audio tracks.
69 static int pmdown_time = 5000;
70 module_param(pmdown_time, int, 0);
71 MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
73 struct snd_ac97_reset_cfg {
75 struct pinctrl_state *pstate_reset;
76 struct pinctrl_state *pstate_warm_reset;
77 struct pinctrl_state *pstate_run;
83 /* returns the minimum number of bytes needed to represent
84 * a particular given value */
85 static int min_bytes_needed(unsigned long val)
90 for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
93 c = (sizeof val * 8) - c;
101 /* fill buf which is 'len' bytes with a formatted
102 * string of the form 'reg: value\n' */
103 static int format_register_str(struct snd_soc_codec *codec,
104 unsigned int reg, char *buf, size_t len)
106 int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
107 int regsize = codec->driver->reg_word_size * 2;
109 char tmpbuf[len + 1];
110 char regbuf[regsize + 1];
112 /* since tmpbuf is allocated on the stack, warn the callers if they
113 * try to abuse this function */
116 /* +2 for ': ' and + 1 for '\n' */
117 if (wordsize + regsize + 2 + 1 != len)
120 ret = snd_soc_read(codec, reg);
122 memset(regbuf, 'X', regsize);
123 regbuf[regsize] = '\0';
125 snprintf(regbuf, regsize + 1, "%.*x", regsize, ret);
128 /* prepare the buffer */
129 snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf);
130 /* copy it back to the caller without the '\0' */
131 memcpy(buf, tmpbuf, len);
136 /* codec register dump */
137 static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
138 size_t count, loff_t pos)
141 int wordsize, regsize;
146 wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
147 regsize = codec->driver->reg_word_size * 2;
149 len = wordsize + regsize + 2 + 1;
151 if (!codec->driver->reg_cache_size)
154 if (codec->driver->reg_cache_step)
155 step = codec->driver->reg_cache_step;
157 for (i = 0; i < codec->driver->reg_cache_size; i += step) {
158 if (!snd_soc_codec_readable_register(codec, i))
160 if (codec->driver->display_register) {
161 count += codec->driver->display_register(codec, buf + count,
162 PAGE_SIZE - count, i);
164 /* only support larger than PAGE_SIZE bytes debugfs
165 * entries for the default case */
167 if (total + len >= count - 1)
169 format_register_str(codec, i, buf + total, len);
176 total = min(total, count - 1);
181 static ssize_t codec_reg_show(struct device *dev,
182 struct device_attribute *attr, char *buf)
184 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
186 return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
189 static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
191 static ssize_t pmdown_time_show(struct device *dev,
192 struct device_attribute *attr, char *buf)
194 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
196 return sprintf(buf, "%ld\n", rtd->pmdown_time);
199 static ssize_t pmdown_time_set(struct device *dev,
200 struct device_attribute *attr,
201 const char *buf, size_t count)
203 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
206 ret = kstrtol(buf, 10, &rtd->pmdown_time);
213 static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
215 #ifdef CONFIG_DEBUG_FS
216 static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
217 size_t count, loff_t *ppos)
220 struct snd_soc_codec *codec = file->private_data;
223 if (*ppos < 0 || !count)
226 buf = kmalloc(count, GFP_KERNEL);
230 ret = soc_codec_reg_show(codec, buf, count, *ppos);
232 if (copy_to_user(user_buf, buf, ret)) {
243 static ssize_t codec_reg_write_file(struct file *file,
244 const char __user *user_buf, size_t count, loff_t *ppos)
249 unsigned long reg, value;
250 struct snd_soc_codec *codec = file->private_data;
253 buf_size = min(count, (sizeof(buf)-1));
254 if (copy_from_user(buf, user_buf, buf_size))
258 while (*start == ' ')
260 reg = simple_strtoul(start, &start, 16);
261 while (*start == ' ')
263 ret = kstrtoul(start, 16, &value);
267 /* Userspace has been fiddling around behind the kernel's back */
268 add_taint(TAINT_USER, LOCKDEP_NOW_UNRELIABLE);
270 snd_soc_write(codec, reg, value);
274 static const struct file_operations codec_reg_fops = {
276 .read = codec_reg_read_file,
277 .write = codec_reg_write_file,
278 .llseek = default_llseek,
281 static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
283 struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
285 codec->debugfs_codec_root = debugfs_create_dir(codec->name,
287 if (!codec->debugfs_codec_root) {
289 "ASoC: Failed to create codec debugfs directory\n");
293 debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
295 debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
298 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
299 codec->debugfs_codec_root,
300 codec, &codec_reg_fops);
301 if (!codec->debugfs_reg)
303 "ASoC: Failed to create codec register debugfs file\n");
305 snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root);
308 static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
310 debugfs_remove_recursive(codec->debugfs_codec_root);
313 static void soc_init_platform_debugfs(struct snd_soc_platform *platform)
315 struct dentry *debugfs_card_root = platform->card->debugfs_card_root;
317 platform->debugfs_platform_root = debugfs_create_dir(platform->name,
319 if (!platform->debugfs_platform_root) {
320 dev_warn(platform->dev,
321 "ASoC: Failed to create platform debugfs directory\n");
325 snd_soc_dapm_debugfs_init(&platform->dapm,
326 platform->debugfs_platform_root);
329 static void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
331 debugfs_remove_recursive(platform->debugfs_platform_root);
334 static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
335 size_t count, loff_t *ppos)
337 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
338 ssize_t len, ret = 0;
339 struct snd_soc_codec *codec;
344 list_for_each_entry(codec, &codec_list, list) {
345 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
349 if (ret > PAGE_SIZE) {
356 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
363 static const struct file_operations codec_list_fops = {
364 .read = codec_list_read_file,
365 .llseek = default_llseek,/* read accesses f_pos */
368 static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
369 size_t count, loff_t *ppos)
371 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
372 ssize_t len, ret = 0;
373 struct snd_soc_dai *dai;
378 list_for_each_entry(dai, &dai_list, list) {
379 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", dai->name);
382 if (ret > PAGE_SIZE) {
388 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
395 static const struct file_operations dai_list_fops = {
396 .read = dai_list_read_file,
397 .llseek = default_llseek,/* read accesses f_pos */
400 static ssize_t platform_list_read_file(struct file *file,
401 char __user *user_buf,
402 size_t count, loff_t *ppos)
404 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
405 ssize_t len, ret = 0;
406 struct snd_soc_platform *platform;
411 list_for_each_entry(platform, &platform_list, list) {
412 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
416 if (ret > PAGE_SIZE) {
422 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
429 static const struct file_operations platform_list_fops = {
430 .read = platform_list_read_file,
431 .llseek = default_llseek,/* read accesses f_pos */
434 static void soc_init_card_debugfs(struct snd_soc_card *card)
436 card->debugfs_card_root = debugfs_create_dir(card->name,
437 snd_soc_debugfs_root);
438 if (!card->debugfs_card_root) {
440 "ASoC: Failed to create card debugfs directory\n");
444 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
445 card->debugfs_card_root,
447 if (!card->debugfs_pop_time)
449 "ASoC: Failed to create pop time debugfs file\n");
452 static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
454 debugfs_remove_recursive(card->debugfs_card_root);
459 static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
463 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
467 static inline void soc_init_platform_debugfs(struct snd_soc_platform *platform)
471 static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
475 static inline void soc_init_card_debugfs(struct snd_soc_card *card)
479 static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
484 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
485 const char *dai_link, int stream)
489 for (i = 0; i < card->num_links; i++) {
490 if (card->rtd[i].dai_link->no_pcm &&
491 !strcmp(card->rtd[i].dai_link->name, dai_link))
492 return card->rtd[i].pcm->streams[stream].substream;
494 dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link);
497 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);
499 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
500 const char *dai_link)
504 for (i = 0; i < card->num_links; i++) {
505 if (!strcmp(card->rtd[i].dai_link->name, dai_link))
506 return &card->rtd[i];
508 dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link);
511 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
513 #ifdef CONFIG_SND_SOC_AC97_BUS
514 /* unregister ac97 codec */
515 static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
517 if (codec->ac97->dev.bus)
518 device_unregister(&codec->ac97->dev);
522 /* stop no dev release warning */
523 static void soc_ac97_device_release(struct device *dev){}
525 /* register ac97 codec to bus */
526 static int soc_ac97_dev_register(struct snd_soc_codec *codec)
530 codec->ac97->dev.bus = &ac97_bus_type;
531 codec->ac97->dev.parent = codec->card->dev;
532 codec->ac97->dev.release = soc_ac97_device_release;
534 dev_set_name(&codec->ac97->dev, "%d-%d:%s",
535 codec->card->snd_card->number, 0, codec->name);
536 err = device_register(&codec->ac97->dev);
538 dev_err(codec->dev, "ASoC: Can't register ac97 bus\n");
539 codec->ac97->dev.bus = NULL;
546 static void codec2codec_close_delayed_work(struct work_struct *work)
548 /* Currently nothing to do for c2c links
549 * Since c2c links are internal nodes in the DAPM graph and
550 * don't interface with the outside world or application layer
551 * we don't have to do any special handling on close.
555 #ifdef CONFIG_PM_SLEEP
556 /* powers down audio subsystem for suspend */
557 int snd_soc_suspend(struct device *dev)
559 struct snd_soc_card *card = dev_get_drvdata(dev);
560 struct snd_soc_codec *codec;
563 /* If the initialization of this soc device failed, there is no codec
564 * associated with it. Just bail out in this case.
566 if (list_empty(&card->codec_dev_list))
569 /* Due to the resume being scheduled into a workqueue we could
570 * suspend before that's finished - wait for it to complete.
572 snd_power_lock(card->snd_card);
573 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
574 snd_power_unlock(card->snd_card);
576 /* we're going to block userspace touching us until resume completes */
577 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
579 /* mute any active DACs */
580 for (i = 0; i < card->num_rtd; i++) {
581 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
582 struct snd_soc_dai_driver *drv = dai->driver;
584 if (card->rtd[i].dai_link->ignore_suspend)
587 if (drv->ops->digital_mute && dai->playback_active)
588 drv->ops->digital_mute(dai, 1);
591 /* suspend all pcms */
592 for (i = 0; i < card->num_rtd; i++) {
593 if (card->rtd[i].dai_link->ignore_suspend)
596 snd_pcm_suspend_all(card->rtd[i].pcm);
599 if (card->suspend_pre)
600 card->suspend_pre(card);
602 for (i = 0; i < card->num_rtd; i++) {
603 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
604 struct snd_soc_platform *platform = card->rtd[i].platform;
606 if (card->rtd[i].dai_link->ignore_suspend)
609 if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
610 cpu_dai->driver->suspend(cpu_dai);
611 if (platform->driver->suspend && !platform->suspended) {
612 platform->driver->suspend(cpu_dai);
613 platform->suspended = 1;
617 /* close any waiting streams and save state */
618 for (i = 0; i < card->num_rtd; i++) {
619 flush_delayed_work(&card->rtd[i].delayed_work);
620 card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
623 for (i = 0; i < card->num_rtd; i++) {
625 if (card->rtd[i].dai_link->ignore_suspend)
628 snd_soc_dapm_stream_event(&card->rtd[i],
629 SNDRV_PCM_STREAM_PLAYBACK,
630 SND_SOC_DAPM_STREAM_SUSPEND);
632 snd_soc_dapm_stream_event(&card->rtd[i],
633 SNDRV_PCM_STREAM_CAPTURE,
634 SND_SOC_DAPM_STREAM_SUSPEND);
637 /* Recheck all analogue paths too */
638 dapm_mark_io_dirty(&card->dapm);
639 snd_soc_dapm_sync(&card->dapm);
641 /* suspend all CODECs */
642 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
643 /* If there are paths active then the CODEC will be held with
644 * bias _ON and should not be suspended. */
645 if (!codec->suspended && codec->driver->suspend) {
646 switch (codec->dapm.bias_level) {
647 case SND_SOC_BIAS_STANDBY:
649 * If the CODEC is capable of idle
650 * bias off then being in STANDBY
651 * means it's doing something,
652 * otherwise fall through.
654 if (codec->dapm.idle_bias_off) {
656 "ASoC: idle_bias_off CODEC on over suspend\n");
659 case SND_SOC_BIAS_OFF:
660 codec->driver->suspend(codec);
661 codec->suspended = 1;
662 codec->cache_sync = 1;
663 if (codec->using_regmap)
664 regcache_mark_dirty(codec->control_data);
668 "ASoC: CODEC is on over suspend\n");
674 for (i = 0; i < card->num_rtd; i++) {
675 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
677 if (card->rtd[i].dai_link->ignore_suspend)
680 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
681 cpu_dai->driver->suspend(cpu_dai);
684 if (card->suspend_post)
685 card->suspend_post(card);
689 EXPORT_SYMBOL_GPL(snd_soc_suspend);
691 /* deferred resume work, so resume can complete before we finished
692 * setting our codec back up, which can be very slow on I2C
694 static void soc_resume_deferred(struct work_struct *work)
696 struct snd_soc_card *card =
697 container_of(work, struct snd_soc_card, deferred_resume_work);
698 struct snd_soc_codec *codec;
701 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
702 * so userspace apps are blocked from touching us
705 dev_dbg(card->dev, "ASoC: starting resume work\n");
707 /* Bring us up into D2 so that DAPM starts enabling things */
708 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
710 if (card->resume_pre)
711 card->resume_pre(card);
713 /* resume AC97 DAIs */
714 for (i = 0; i < card->num_rtd; i++) {
715 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
717 if (card->rtd[i].dai_link->ignore_suspend)
720 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
721 cpu_dai->driver->resume(cpu_dai);
724 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
725 /* If the CODEC was idle over suspend then it will have been
726 * left with bias OFF or STANDBY and suspended so we must now
727 * resume. Otherwise the suspend was suppressed.
729 if (codec->driver->resume && codec->suspended) {
730 switch (codec->dapm.bias_level) {
731 case SND_SOC_BIAS_STANDBY:
732 case SND_SOC_BIAS_OFF:
733 codec->driver->resume(codec);
734 codec->suspended = 0;
738 "ASoC: CODEC was on over suspend\n");
744 for (i = 0; i < card->num_rtd; i++) {
746 if (card->rtd[i].dai_link->ignore_suspend)
749 snd_soc_dapm_stream_event(&card->rtd[i],
750 SNDRV_PCM_STREAM_PLAYBACK,
751 SND_SOC_DAPM_STREAM_RESUME);
753 snd_soc_dapm_stream_event(&card->rtd[i],
754 SNDRV_PCM_STREAM_CAPTURE,
755 SND_SOC_DAPM_STREAM_RESUME);
758 /* unmute any active DACs */
759 for (i = 0; i < card->num_rtd; i++) {
760 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
761 struct snd_soc_dai_driver *drv = dai->driver;
763 if (card->rtd[i].dai_link->ignore_suspend)
766 if (drv->ops->digital_mute && dai->playback_active)
767 drv->ops->digital_mute(dai, 0);
770 for (i = 0; i < card->num_rtd; i++) {
771 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
772 struct snd_soc_platform *platform = card->rtd[i].platform;
774 if (card->rtd[i].dai_link->ignore_suspend)
777 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
778 cpu_dai->driver->resume(cpu_dai);
779 if (platform->driver->resume && platform->suspended) {
780 platform->driver->resume(cpu_dai);
781 platform->suspended = 0;
785 if (card->resume_post)
786 card->resume_post(card);
788 dev_dbg(card->dev, "ASoC: resume work completed\n");
790 /* userspace can access us now we are back as we were before */
791 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
793 /* Recheck all analogue paths too */
794 dapm_mark_io_dirty(&card->dapm);
795 snd_soc_dapm_sync(&card->dapm);
798 /* powers up audio subsystem after a suspend */
799 int snd_soc_resume(struct device *dev)
801 struct snd_soc_card *card = dev_get_drvdata(dev);
802 int i, ac97_control = 0;
804 /* If the initialization of this soc device failed, there is no codec
805 * associated with it. Just bail out in this case.
807 if (list_empty(&card->codec_dev_list))
810 /* AC97 devices might have other drivers hanging off them so
811 * need to resume immediately. Other drivers don't have that
812 * problem and may take a substantial amount of time to resume
813 * due to I/O costs and anti-pop so handle them out of line.
815 for (i = 0; i < card->num_rtd; i++) {
816 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
817 ac97_control |= cpu_dai->driver->ac97_control;
820 dev_dbg(dev, "ASoC: Resuming AC97 immediately\n");
821 soc_resume_deferred(&card->deferred_resume_work);
823 dev_dbg(dev, "ASoC: Scheduling resume work\n");
824 if (!schedule_work(&card->deferred_resume_work))
825 dev_err(dev, "ASoC: resume work item may be lost\n");
830 EXPORT_SYMBOL_GPL(snd_soc_resume);
832 #define snd_soc_suspend NULL
833 #define snd_soc_resume NULL
836 static const struct snd_soc_dai_ops null_dai_ops = {
839 static int soc_bind_dai_link(struct snd_soc_card *card, int num)
841 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
842 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
843 struct snd_soc_codec *codec;
844 struct snd_soc_platform *platform;
845 struct snd_soc_dai *codec_dai, *cpu_dai;
846 const char *platform_name;
848 dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num);
850 /* Find CPU DAI from registered DAIs*/
851 list_for_each_entry(cpu_dai, &dai_list, list) {
852 if (dai_link->cpu_of_node &&
853 (cpu_dai->dev->of_node != dai_link->cpu_of_node))
855 if (dai_link->cpu_name &&
856 strcmp(dev_name(cpu_dai->dev), dai_link->cpu_name))
858 if (dai_link->cpu_dai_name &&
859 strcmp(cpu_dai->name, dai_link->cpu_dai_name))
862 rtd->cpu_dai = cpu_dai;
866 dev_err(card->dev, "ASoC: CPU DAI %s not registered\n",
867 dai_link->cpu_dai_name);
868 return -EPROBE_DEFER;
871 /* Find CODEC from registered CODECs */
872 list_for_each_entry(codec, &codec_list, list) {
873 if (dai_link->codec_of_node) {
874 if (codec->dev->of_node != dai_link->codec_of_node)
877 if (strcmp(codec->name, dai_link->codec_name))
884 * CODEC found, so find CODEC DAI from registered DAIs from
887 list_for_each_entry(codec_dai, &dai_list, list) {
888 if (codec->dev == codec_dai->dev &&
889 !strcmp(codec_dai->name,
890 dai_link->codec_dai_name)) {
892 rtd->codec_dai = codec_dai;
896 if (!rtd->codec_dai) {
897 dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
898 dai_link->codec_dai_name);
899 return -EPROBE_DEFER;
904 dev_err(card->dev, "ASoC: CODEC %s not registered\n",
905 dai_link->codec_name);
906 return -EPROBE_DEFER;
909 /* if there's no platform we match on the empty platform */
910 platform_name = dai_link->platform_name;
911 if (!platform_name && !dai_link->platform_of_node)
912 platform_name = "snd-soc-dummy";
914 /* find one from the set of registered platforms */
915 list_for_each_entry(platform, &platform_list, list) {
916 if (dai_link->platform_of_node) {
917 if (platform->dev->of_node !=
918 dai_link->platform_of_node)
921 if (strcmp(platform->name, platform_name))
925 rtd->platform = platform;
927 if (!rtd->platform) {
928 dev_err(card->dev, "ASoC: platform %s not registered\n",
929 dai_link->platform_name);
930 return -EPROBE_DEFER;
938 static int soc_remove_platform(struct snd_soc_platform *platform)
942 if (platform->driver->remove) {
943 ret = platform->driver->remove(platform);
945 dev_err(platform->dev, "ASoC: failed to remove %d\n",
949 /* Make sure all DAPM widgets are freed */
950 snd_soc_dapm_free(&platform->dapm);
952 soc_cleanup_platform_debugfs(platform);
953 platform->probed = 0;
954 list_del(&platform->card_list);
955 module_put(platform->dev->driver->owner);
960 static void soc_remove_codec(struct snd_soc_codec *codec)
964 if (codec->driver->remove) {
965 err = codec->driver->remove(codec);
967 dev_err(codec->dev, "ASoC: failed to remove %d\n", err);
970 /* Make sure all DAPM widgets are freed */
971 snd_soc_dapm_free(&codec->dapm);
973 soc_cleanup_codec_debugfs(codec);
975 list_del(&codec->card_list);
976 module_put(codec->dev->driver->owner);
979 static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order)
981 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
982 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
985 /* unregister the rtd device */
986 if (rtd->dev_registered) {
987 device_remove_file(rtd->dev, &dev_attr_pmdown_time);
988 device_remove_file(rtd->dev, &dev_attr_codec_reg);
989 device_unregister(rtd->dev);
990 rtd->dev_registered = 0;
993 /* remove the CODEC DAI */
994 if (codec_dai && codec_dai->probed &&
995 codec_dai->driver->remove_order == order) {
996 if (codec_dai->driver->remove) {
997 err = codec_dai->driver->remove(codec_dai);
999 dev_err(codec_dai->dev,
1000 "ASoC: failed to remove %s: %d\n",
1001 codec_dai->name, err);
1003 codec_dai->probed = 0;
1004 list_del(&codec_dai->card_list);
1007 /* remove the cpu_dai */
1008 if (cpu_dai && cpu_dai->probed &&
1009 cpu_dai->driver->remove_order == order) {
1010 if (cpu_dai->driver->remove) {
1011 err = cpu_dai->driver->remove(cpu_dai);
1013 dev_err(cpu_dai->dev,
1014 "ASoC: failed to remove %s: %d\n",
1015 cpu_dai->name, err);
1017 cpu_dai->probed = 0;
1018 list_del(&cpu_dai->card_list);
1020 if (!cpu_dai->codec) {
1021 snd_soc_dapm_free(&cpu_dai->dapm);
1022 module_put(cpu_dai->dev->driver->owner);
1027 static void soc_remove_link_components(struct snd_soc_card *card, int num,
1030 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1031 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1032 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1033 struct snd_soc_platform *platform = rtd->platform;
1034 struct snd_soc_codec *codec;
1036 /* remove the platform */
1037 if (platform && platform->probed &&
1038 platform->driver->remove_order == order) {
1039 soc_remove_platform(platform);
1042 /* remove the CODEC-side CODEC */
1044 codec = codec_dai->codec;
1045 if (codec && codec->probed &&
1046 codec->driver->remove_order == order)
1047 soc_remove_codec(codec);
1050 /* remove any CPU-side CODEC */
1052 codec = cpu_dai->codec;
1053 if (codec && codec->probed &&
1054 codec->driver->remove_order == order)
1055 soc_remove_codec(codec);
1059 static void soc_remove_dai_links(struct snd_soc_card *card)
1063 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1065 for (dai = 0; dai < card->num_rtd; dai++)
1066 soc_remove_link_dais(card, dai, order);
1069 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1071 for (dai = 0; dai < card->num_rtd; dai++)
1072 soc_remove_link_components(card, dai, order);
1078 static void soc_set_name_prefix(struct snd_soc_card *card,
1079 struct snd_soc_codec *codec)
1083 if (card->codec_conf == NULL)
1086 for (i = 0; i < card->num_configs; i++) {
1087 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1088 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
1089 codec->name_prefix = map->name_prefix;
1095 static int soc_probe_codec(struct snd_soc_card *card,
1096 struct snd_soc_codec *codec)
1099 const struct snd_soc_codec_driver *driver = codec->driver;
1100 struct snd_soc_dai *dai;
1103 codec->dapm.card = card;
1104 soc_set_name_prefix(card, codec);
1106 if (!try_module_get(codec->dev->driver->owner))
1109 soc_init_codec_debugfs(codec);
1111 if (driver->dapm_widgets)
1112 snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
1113 driver->num_dapm_widgets);
1115 /* Create DAPM widgets for each DAI stream */
1116 list_for_each_entry(dai, &dai_list, list) {
1117 if (dai->dev != codec->dev)
1120 snd_soc_dapm_new_dai_widgets(&codec->dapm, dai);
1123 codec->dapm.idle_bias_off = driver->idle_bias_off;
1125 if (driver->probe) {
1126 ret = driver->probe(codec);
1129 "ASoC: failed to probe CODEC %d\n", ret);
1132 WARN(codec->dapm.idle_bias_off &&
1133 codec->dapm.bias_level != SND_SOC_BIAS_OFF,
1134 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1138 /* If the driver didn't set I/O up try regmap */
1139 if (!codec->write && dev_get_regmap(codec->dev, NULL))
1140 snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP);
1142 if (driver->controls)
1143 snd_soc_add_codec_controls(codec, driver->controls,
1144 driver->num_controls);
1145 if (driver->dapm_routes)
1146 snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
1147 driver->num_dapm_routes);
1149 /* mark codec as probed and add to card codec list */
1151 list_add(&codec->card_list, &card->codec_dev_list);
1152 list_add(&codec->dapm.list, &card->dapm_list);
1157 soc_cleanup_codec_debugfs(codec);
1158 module_put(codec->dev->driver->owner);
1163 static int soc_probe_platform(struct snd_soc_card *card,
1164 struct snd_soc_platform *platform)
1167 const struct snd_soc_platform_driver *driver = platform->driver;
1168 struct snd_soc_dai *dai;
1170 platform->card = card;
1171 platform->dapm.card = card;
1173 if (!try_module_get(platform->dev->driver->owner))
1176 soc_init_platform_debugfs(platform);
1178 if (driver->dapm_widgets)
1179 snd_soc_dapm_new_controls(&platform->dapm,
1180 driver->dapm_widgets, driver->num_dapm_widgets);
1182 /* Create DAPM widgets for each DAI stream */
1183 list_for_each_entry(dai, &dai_list, list) {
1184 if (dai->dev != platform->dev)
1187 snd_soc_dapm_new_dai_widgets(&platform->dapm, dai);
1190 platform->dapm.idle_bias_off = 1;
1192 if (driver->probe) {
1193 ret = driver->probe(platform);
1195 dev_err(platform->dev,
1196 "ASoC: failed to probe platform %d\n", ret);
1201 if (driver->controls)
1202 snd_soc_add_platform_controls(platform, driver->controls,
1203 driver->num_controls);
1204 if (driver->dapm_routes)
1205 snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
1206 driver->num_dapm_routes);
1208 /* mark platform as probed and add to card platform list */
1209 platform->probed = 1;
1210 list_add(&platform->card_list, &card->platform_dev_list);
1211 list_add(&platform->dapm.list, &card->dapm_list);
1216 soc_cleanup_platform_debugfs(platform);
1217 module_put(platform->dev->driver->owner);
1222 static void rtd_release(struct device *dev)
1227 static int soc_post_component_init(struct snd_soc_card *card,
1228 struct snd_soc_codec *codec,
1229 int num, int dailess)
1231 struct snd_soc_dai_link *dai_link = NULL;
1232 struct snd_soc_aux_dev *aux_dev = NULL;
1233 struct snd_soc_pcm_runtime *rtd;
1234 const char *temp, *name;
1238 dai_link = &card->dai_link[num];
1239 rtd = &card->rtd[num];
1240 name = dai_link->name;
1242 aux_dev = &card->aux_dev[num];
1243 rtd = &card->rtd_aux[num];
1244 name = aux_dev->name;
1248 /* machine controls, routes and widgets are not prefixed */
1249 temp = codec->name_prefix;
1250 codec->name_prefix = NULL;
1252 /* do machine specific initialization */
1253 if (!dailess && dai_link->init)
1254 ret = dai_link->init(rtd);
1255 else if (dailess && aux_dev->init)
1256 ret = aux_dev->init(&codec->dapm);
1258 dev_err(card->dev, "ASoC: failed to init %s: %d\n", name, ret);
1261 codec->name_prefix = temp;
1263 /* register the rtd device */
1266 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1269 device_initialize(rtd->dev);
1270 rtd->dev->parent = card->dev;
1271 rtd->dev->release = rtd_release;
1272 rtd->dev->init_name = name;
1273 dev_set_drvdata(rtd->dev, rtd);
1274 mutex_init(&rtd->pcm_mutex);
1275 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1276 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1277 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1278 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1279 ret = device_add(rtd->dev);
1281 /* calling put_device() here to free the rtd->dev */
1282 put_device(rtd->dev);
1284 "ASoC: failed to register runtime device: %d\n", ret);
1287 rtd->dev_registered = 1;
1289 /* add DAPM sysfs entries for this codec */
1290 ret = snd_soc_dapm_sys_add(rtd->dev);
1293 "ASoC: failed to add codec dapm sysfs entries: %d\n", ret);
1295 /* add codec sysfs entries */
1296 ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
1299 "ASoC: failed to add codec sysfs files: %d\n", ret);
1301 #ifdef CONFIG_DEBUG_FS
1302 /* add DPCM sysfs entries */
1303 if (!dailess && !dai_link->dynamic)
1306 ret = soc_dpcm_debugfs_add(rtd);
1308 dev_err(rtd->dev, "ASoC: failed to add dpcm sysfs entries: %d\n", ret);
1315 static int soc_probe_link_components(struct snd_soc_card *card, int num,
1318 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1319 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1320 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1321 struct snd_soc_platform *platform = rtd->platform;
1324 /* probe the CPU-side component, if it is a CODEC */
1325 if (cpu_dai->codec &&
1326 !cpu_dai->codec->probed &&
1327 cpu_dai->codec->driver->probe_order == order) {
1328 ret = soc_probe_codec(card, cpu_dai->codec);
1333 /* probe the CODEC-side component */
1334 if (!codec_dai->codec->probed &&
1335 codec_dai->codec->driver->probe_order == order) {
1336 ret = soc_probe_codec(card, codec_dai->codec);
1341 /* probe the platform */
1342 if (!platform->probed &&
1343 platform->driver->probe_order == order) {
1344 ret = soc_probe_platform(card, platform);
1352 static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
1354 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1355 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1356 struct snd_soc_codec *codec = rtd->codec;
1357 struct snd_soc_platform *platform = rtd->platform;
1358 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1359 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1360 struct snd_soc_dapm_widget *play_w, *capture_w;
1363 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1364 card->name, num, order);
1366 /* config components */
1367 cpu_dai->platform = platform;
1368 codec_dai->card = card;
1369 cpu_dai->card = card;
1371 /* set default power off timeout */
1372 rtd->pmdown_time = pmdown_time;
1374 /* probe the cpu_dai */
1375 if (!cpu_dai->probed &&
1376 cpu_dai->driver->probe_order == order) {
1377 if (!cpu_dai->codec) {
1378 cpu_dai->dapm.card = card;
1379 if (!try_module_get(cpu_dai->dev->driver->owner))
1382 list_add(&cpu_dai->dapm.list, &card->dapm_list);
1383 snd_soc_dapm_new_dai_widgets(&cpu_dai->dapm, cpu_dai);
1386 if (cpu_dai->driver->probe) {
1387 ret = cpu_dai->driver->probe(cpu_dai);
1389 dev_err(cpu_dai->dev,
1390 "ASoC: failed to probe CPU DAI %s: %d\n",
1391 cpu_dai->name, ret);
1392 module_put(cpu_dai->dev->driver->owner);
1396 cpu_dai->probed = 1;
1397 /* mark cpu_dai as probed and add to card dai list */
1398 list_add(&cpu_dai->card_list, &card->dai_dev_list);
1401 /* probe the CODEC DAI */
1402 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
1403 if (codec_dai->driver->probe) {
1404 ret = codec_dai->driver->probe(codec_dai);
1406 dev_err(codec_dai->dev,
1407 "ASoC: failed to probe CODEC DAI %s: %d\n",
1408 codec_dai->name, ret);
1413 /* mark codec_dai as probed and add to card dai list */
1414 codec_dai->probed = 1;
1415 list_add(&codec_dai->card_list, &card->dai_dev_list);
1418 /* complete DAI probe during last probe */
1419 if (order != SND_SOC_COMP_ORDER_LAST)
1422 ret = soc_post_component_init(card, codec, num, 0);
1426 ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
1428 dev_warn(rtd->dev, "ASoC: failed to add pmdown_time sysfs: %d\n",
1431 if (cpu_dai->driver->compress_dai) {
1432 /*create compress_device"*/
1433 ret = soc_new_compress(rtd, num);
1435 dev_err(card->dev, "ASoC: can't create compress %s\n",
1436 dai_link->stream_name);
1441 if (!dai_link->params) {
1442 /* create the pcm */
1443 ret = soc_new_pcm(rtd, num);
1445 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1446 dai_link->stream_name, ret);
1450 INIT_DELAYED_WORK(&rtd->delayed_work,
1451 codec2codec_close_delayed_work);
1453 /* link the DAI widgets */
1454 play_w = codec_dai->playback_widget;
1455 capture_w = cpu_dai->capture_widget;
1456 if (play_w && capture_w) {
1457 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1460 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1461 play_w->name, capture_w->name, ret);
1466 play_w = cpu_dai->playback_widget;
1467 capture_w = codec_dai->capture_widget;
1468 if (play_w && capture_w) {
1469 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1472 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1473 play_w->name, capture_w->name, ret);
1480 /* add platform data for AC97 devices */
1481 if (rtd->codec_dai->driver->ac97_control)
1482 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1487 #ifdef CONFIG_SND_SOC_AC97_BUS
1488 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1492 /* Only instantiate AC97 if not already done by the adaptor
1493 * for the generic AC97 subsystem.
1495 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
1497 * It is possible that the AC97 device is already registered to
1498 * the device subsystem. This happens when the device is created
1499 * via snd_ac97_mixer(). Currently only SoC codec that does so
1500 * is the generic AC97 glue but others migh emerge.
1502 * In those cases we don't try to register the device again.
1504 if (!rtd->codec->ac97_created)
1507 ret = soc_ac97_dev_register(rtd->codec);
1509 dev_err(rtd->codec->dev,
1510 "ASoC: AC97 device register failed: %d\n", ret);
1514 rtd->codec->ac97_registered = 1;
1519 static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1521 if (codec->ac97_registered) {
1522 soc_ac97_dev_unregister(codec);
1523 codec->ac97_registered = 0;
1528 static int soc_check_aux_dev(struct snd_soc_card *card, int num)
1530 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1531 struct snd_soc_codec *codec;
1533 /* find CODEC from registered CODECs*/
1534 list_for_each_entry(codec, &codec_list, list) {
1535 if (!strcmp(codec->name, aux_dev->codec_name))
1539 dev_err(card->dev, "ASoC: %s not registered\n", aux_dev->codec_name);
1541 return -EPROBE_DEFER;
1544 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1546 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1547 struct snd_soc_codec *codec;
1550 /* find CODEC from registered CODECs*/
1551 list_for_each_entry(codec, &codec_list, list) {
1552 if (!strcmp(codec->name, aux_dev->codec_name)) {
1553 if (codec->probed) {
1555 "ASoC: codec already probed");
1562 /* codec not found */
1563 dev_err(card->dev, "ASoC: codec %s not found", aux_dev->codec_name);
1564 return -EPROBE_DEFER;
1567 ret = soc_probe_codec(card, codec);
1571 ret = soc_post_component_init(card, codec, num, 1);
1577 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1579 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1580 struct snd_soc_codec *codec = rtd->codec;
1582 /* unregister the rtd device */
1583 if (rtd->dev_registered) {
1584 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1585 device_unregister(rtd->dev);
1586 rtd->dev_registered = 0;
1589 if (codec && codec->probed)
1590 soc_remove_codec(codec);
1593 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
1594 enum snd_soc_compress_type compress_type)
1598 if (codec->cache_init)
1601 /* override the compress_type if necessary */
1602 if (compress_type && codec->compress_type != compress_type)
1603 codec->compress_type = compress_type;
1604 ret = snd_soc_cache_init(codec);
1607 "ASoC: Failed to set cache compression type: %d\n",
1611 codec->cache_init = 1;
1615 static int snd_soc_instantiate_card(struct snd_soc_card *card)
1617 struct snd_soc_codec *codec;
1618 struct snd_soc_codec_conf *codec_conf;
1619 enum snd_soc_compress_type compress_type;
1620 struct snd_soc_dai_link *dai_link;
1621 int ret, i, order, dai_fmt;
1623 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1626 for (i = 0; i < card->num_links; i++) {
1627 ret = soc_bind_dai_link(card, i);
1632 /* check aux_devs too */
1633 for (i = 0; i < card->num_aux_devs; i++) {
1634 ret = soc_check_aux_dev(card, i);
1639 /* initialize the register cache for each available codec */
1640 list_for_each_entry(codec, &codec_list, list) {
1641 if (codec->cache_init)
1643 /* by default we don't override the compress_type */
1645 /* check to see if we need to override the compress_type */
1646 for (i = 0; i < card->num_configs; ++i) {
1647 codec_conf = &card->codec_conf[i];
1648 if (!strcmp(codec->name, codec_conf->dev_name)) {
1649 compress_type = codec_conf->compress_type;
1650 if (compress_type && compress_type
1651 != codec->compress_type)
1655 ret = snd_soc_init_codec_cache(codec, compress_type);
1660 /* card bind complete so register a sound card */
1661 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1662 card->owner, 0, &card->snd_card);
1665 "ASoC: can't create sound card for card %s: %d\n",
1669 card->snd_card->dev = card->dev;
1671 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1672 card->dapm.dev = card->dev;
1673 card->dapm.card = card;
1674 list_add(&card->dapm.list, &card->dapm_list);
1676 #ifdef CONFIG_DEBUG_FS
1677 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1680 #ifdef CONFIG_PM_SLEEP
1681 /* deferred resume work */
1682 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1685 if (card->dapm_widgets)
1686 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1687 card->num_dapm_widgets);
1689 /* initialise the sound card only once */
1691 ret = card->probe(card);
1693 goto card_probe_error;
1696 /* probe all components used by DAI links on this card */
1697 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1699 for (i = 0; i < card->num_links; i++) {
1700 ret = soc_probe_link_components(card, i, order);
1703 "ASoC: failed to instantiate card %d\n",
1710 /* probe all DAI links on this card */
1711 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1713 for (i = 0; i < card->num_links; i++) {
1714 ret = soc_probe_link_dais(card, i, order);
1717 "ASoC: failed to instantiate card %d\n",
1724 for (i = 0; i < card->num_aux_devs; i++) {
1725 ret = soc_probe_aux_dev(card, i);
1728 "ASoC: failed to add auxiliary devices %d\n",
1730 goto probe_aux_dev_err;
1734 snd_soc_dapm_link_dai_widgets(card);
1737 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1739 if (card->dapm_routes)
1740 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1741 card->num_dapm_routes);
1743 for (i = 0; i < card->num_links; i++) {
1744 dai_link = &card->dai_link[i];
1745 dai_fmt = dai_link->dai_fmt;
1748 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1750 if (ret != 0 && ret != -ENOTSUPP)
1751 dev_warn(card->rtd[i].codec_dai->dev,
1752 "ASoC: Failed to set DAI format: %d\n",
1756 /* If this is a regular CPU link there will be a platform */
1758 (dai_link->platform_name || dai_link->platform_of_node)) {
1759 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1761 if (ret != 0 && ret != -ENOTSUPP)
1762 dev_warn(card->rtd[i].cpu_dai->dev,
1763 "ASoC: Failed to set DAI format: %d\n",
1765 } else if (dai_fmt) {
1766 /* Flip the polarity for the "CPU" end */
1767 dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
1768 switch (dai_link->dai_fmt &
1769 SND_SOC_DAIFMT_MASTER_MASK) {
1770 case SND_SOC_DAIFMT_CBM_CFM:
1771 dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1773 case SND_SOC_DAIFMT_CBM_CFS:
1774 dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1776 case SND_SOC_DAIFMT_CBS_CFM:
1777 dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1779 case SND_SOC_DAIFMT_CBS_CFS:
1780 dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1784 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1786 if (ret != 0 && ret != -ENOTSUPP)
1787 dev_warn(card->rtd[i].cpu_dai->dev,
1788 "ASoC: Failed to set DAI format: %d\n",
1793 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1795 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1796 "%s", card->long_name ? card->long_name : card->name);
1797 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1798 "%s", card->driver_name ? card->driver_name : card->name);
1799 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1800 switch (card->snd_card->driver[i]) {
1806 if (!isalnum(card->snd_card->driver[i]))
1807 card->snd_card->driver[i] = '_';
1812 if (card->late_probe) {
1813 ret = card->late_probe(card);
1815 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
1817 goto probe_aux_dev_err;
1821 if (card->fully_routed)
1822 list_for_each_entry(codec, &card->codec_dev_list, card_list)
1823 snd_soc_dapm_auto_nc_codec_pins(codec);
1825 snd_soc_dapm_new_widgets(card);
1827 ret = snd_card_register(card->snd_card);
1829 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
1831 goto probe_aux_dev_err;
1834 #ifdef CONFIG_SND_SOC_AC97_BUS
1835 /* register any AC97 codecs */
1836 for (i = 0; i < card->num_rtd; i++) {
1837 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1840 "ASoC: failed to register AC97: %d\n", ret);
1842 soc_unregister_ac97_dai_link(card->rtd[i].codec);
1843 goto probe_aux_dev_err;
1848 card->instantiated = 1;
1849 snd_soc_dapm_sync(&card->dapm);
1850 mutex_unlock(&card->mutex);
1855 for (i = 0; i < card->num_aux_devs; i++)
1856 soc_remove_aux_dev(card, i);
1859 soc_remove_dai_links(card);
1865 snd_card_free(card->snd_card);
1868 mutex_unlock(&card->mutex);
1873 /* probes a new socdev */
1874 static int soc_probe(struct platform_device *pdev)
1876 struct snd_soc_card *card = platform_get_drvdata(pdev);
1879 * no card, so machine driver should be registering card
1880 * we should not be here in that case so ret error
1885 dev_warn(&pdev->dev,
1886 "ASoC: machine %s should use snd_soc_register_card()\n",
1889 /* Bodge while we unpick instantiation */
1890 card->dev = &pdev->dev;
1892 return snd_soc_register_card(card);
1895 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1899 /* make sure any delayed work runs */
1900 for (i = 0; i < card->num_rtd; i++) {
1901 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1902 flush_delayed_work(&rtd->delayed_work);
1905 /* remove auxiliary devices */
1906 for (i = 0; i < card->num_aux_devs; i++)
1907 soc_remove_aux_dev(card, i);
1909 /* remove and free each DAI */
1910 soc_remove_dai_links(card);
1912 soc_cleanup_card_debugfs(card);
1914 /* remove the card */
1918 snd_soc_dapm_free(&card->dapm);
1920 snd_card_free(card->snd_card);
1925 /* removes a socdev */
1926 static int soc_remove(struct platform_device *pdev)
1928 struct snd_soc_card *card = platform_get_drvdata(pdev);
1930 snd_soc_unregister_card(card);
1934 int snd_soc_poweroff(struct device *dev)
1936 struct snd_soc_card *card = dev_get_drvdata(dev);
1939 if (!card->instantiated)
1942 /* Flush out pmdown_time work - we actually do want to run it
1943 * now, we're shutting down so no imminent restart. */
1944 for (i = 0; i < card->num_rtd; i++) {
1945 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1946 flush_delayed_work(&rtd->delayed_work);
1949 snd_soc_dapm_shutdown(card);
1953 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
1955 const struct dev_pm_ops snd_soc_pm_ops = {
1956 .suspend = snd_soc_suspend,
1957 .resume = snd_soc_resume,
1958 .freeze = snd_soc_suspend,
1959 .thaw = snd_soc_resume,
1960 .poweroff = snd_soc_poweroff,
1961 .restore = snd_soc_resume,
1963 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
1965 /* ASoC platform driver */
1966 static struct platform_driver soc_driver = {
1968 .name = "soc-audio",
1969 .owner = THIS_MODULE,
1970 .pm = &snd_soc_pm_ops,
1973 .remove = soc_remove,
1977 * snd_soc_codec_volatile_register: Report if a register is volatile.
1979 * @codec: CODEC to query.
1980 * @reg: Register to query.
1982 * Boolean function indiciating if a CODEC register is volatile.
1984 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
1987 if (codec->volatile_register)
1988 return codec->volatile_register(codec, reg);
1992 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
1995 * snd_soc_codec_readable_register: Report if a register is readable.
1997 * @codec: CODEC to query.
1998 * @reg: Register to query.
2000 * Boolean function indicating if a CODEC register is readable.
2002 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
2005 if (codec->readable_register)
2006 return codec->readable_register(codec, reg);
2010 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
2013 * snd_soc_codec_writable_register: Report if a register is writable.
2015 * @codec: CODEC to query.
2016 * @reg: Register to query.
2018 * Boolean function indicating if a CODEC register is writable.
2020 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
2023 if (codec->writable_register)
2024 return codec->writable_register(codec, reg);
2028 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
2030 int snd_soc_platform_read(struct snd_soc_platform *platform,
2035 if (!platform->driver->read) {
2036 dev_err(platform->dev, "ASoC: platform has no read back\n");
2040 ret = platform->driver->read(platform, reg);
2041 dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
2042 trace_snd_soc_preg_read(platform, reg, ret);
2046 EXPORT_SYMBOL_GPL(snd_soc_platform_read);
2048 int snd_soc_platform_write(struct snd_soc_platform *platform,
2049 unsigned int reg, unsigned int val)
2051 if (!platform->driver->write) {
2052 dev_err(platform->dev, "ASoC: platform has no write back\n");
2056 dev_dbg(platform->dev, "write %x = %x\n", reg, val);
2057 trace_snd_soc_preg_write(platform, reg, val);
2058 return platform->driver->write(platform, reg, val);
2060 EXPORT_SYMBOL_GPL(snd_soc_platform_write);
2063 * snd_soc_new_ac97_codec - initailise AC97 device
2064 * @codec: audio codec
2065 * @ops: AC97 bus operations
2066 * @num: AC97 codec number
2068 * Initialises AC97 codec resources for use by ad-hoc devices only.
2070 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
2071 struct snd_ac97_bus_ops *ops, int num)
2073 mutex_lock(&codec->mutex);
2075 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2076 if (codec->ac97 == NULL) {
2077 mutex_unlock(&codec->mutex);
2081 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
2082 if (codec->ac97->bus == NULL) {
2085 mutex_unlock(&codec->mutex);
2089 codec->ac97->bus->ops = ops;
2090 codec->ac97->num = num;
2093 * Mark the AC97 device to be created by us. This way we ensure that the
2094 * device will be registered with the device subsystem later on.
2096 codec->ac97_created = 1;
2098 mutex_unlock(&codec->mutex);
2101 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
2103 static struct snd_ac97_reset_cfg snd_ac97_rst_cfg;
2105 static void snd_soc_ac97_warm_reset(struct snd_ac97 *ac97)
2107 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2109 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_warm_reset);
2111 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 1);
2115 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2117 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2121 static void snd_soc_ac97_reset(struct snd_ac97 *ac97)
2123 struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
2125 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_reset);
2127 gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
2128 gpio_direction_output(snd_ac97_rst_cfg.gpio_sdata, 0);
2129 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 0);
2133 gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 1);
2135 pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
2139 static int snd_soc_ac97_parse_pinctl(struct device *dev,
2140 struct snd_ac97_reset_cfg *cfg)
2143 struct pinctrl_state *state;
2147 p = devm_pinctrl_get(dev);
2149 dev_err(dev, "Failed to get pinctrl\n");
2154 state = pinctrl_lookup_state(p, "ac97-reset");
2155 if (IS_ERR(state)) {
2156 dev_err(dev, "Can't find pinctrl state ac97-reset\n");
2157 return PTR_RET(state);
2159 cfg->pstate_reset = state;
2161 state = pinctrl_lookup_state(p, "ac97-warm-reset");
2162 if (IS_ERR(state)) {
2163 dev_err(dev, "Can't find pinctrl state ac97-warm-reset\n");
2164 return PTR_RET(state);
2166 cfg->pstate_warm_reset = state;
2168 state = pinctrl_lookup_state(p, "ac97-running");
2169 if (IS_ERR(state)) {
2170 dev_err(dev, "Can't find pinctrl state ac97-running\n");
2171 return PTR_RET(state);
2173 cfg->pstate_run = state;
2175 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 0);
2177 dev_err(dev, "Can't find ac97-sync gpio\n");
2180 ret = devm_gpio_request(dev, gpio, "AC97 link sync");
2182 dev_err(dev, "Failed requesting ac97-sync gpio\n");
2185 cfg->gpio_sync = gpio;
2187 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 1);
2189 dev_err(dev, "Can't find ac97-sdata gpio %d\n", gpio);
2192 ret = devm_gpio_request(dev, gpio, "AC97 link sdata");
2194 dev_err(dev, "Failed requesting ac97-sdata gpio\n");
2197 cfg->gpio_sdata = gpio;
2199 gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 2);
2201 dev_err(dev, "Can't find ac97-reset gpio\n");
2204 ret = devm_gpio_request(dev, gpio, "AC97 link reset");
2206 dev_err(dev, "Failed requesting ac97-reset gpio\n");
2209 cfg->gpio_reset = gpio;
2214 struct snd_ac97_bus_ops *soc_ac97_ops;
2215 EXPORT_SYMBOL_GPL(soc_ac97_ops);
2217 int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops)
2219 if (ops == soc_ac97_ops)
2222 if (soc_ac97_ops && ops)
2229 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops);
2232 * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions
2234 * This function sets the reset and warm_reset properties of ops and parses
2235 * the device node of pdev to get pinctrl states and gpio numbers to use.
2237 int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops,
2238 struct platform_device *pdev)
2240 struct device *dev = &pdev->dev;
2241 struct snd_ac97_reset_cfg cfg;
2244 ret = snd_soc_ac97_parse_pinctl(dev, &cfg);
2248 ret = snd_soc_set_ac97_ops(ops);
2252 ops->warm_reset = snd_soc_ac97_warm_reset;
2253 ops->reset = snd_soc_ac97_reset;
2255 snd_ac97_rst_cfg = cfg;
2258 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset);
2261 * snd_soc_free_ac97_codec - free AC97 codec device
2262 * @codec: audio codec
2264 * Frees AC97 codec device resources.
2266 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
2268 mutex_lock(&codec->mutex);
2269 #ifdef CONFIG_SND_SOC_AC97_BUS
2270 soc_unregister_ac97_dai_link(codec);
2272 kfree(codec->ac97->bus);
2275 codec->ac97_created = 0;
2276 mutex_unlock(&codec->mutex);
2278 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
2280 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
2284 ret = codec->read(codec, reg);
2285 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
2286 trace_snd_soc_reg_read(codec, reg, ret);
2290 EXPORT_SYMBOL_GPL(snd_soc_read);
2292 unsigned int snd_soc_write(struct snd_soc_codec *codec,
2293 unsigned int reg, unsigned int val)
2295 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
2296 trace_snd_soc_reg_write(codec, reg, val);
2297 return codec->write(codec, reg, val);
2299 EXPORT_SYMBOL_GPL(snd_soc_write);
2301 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
2302 unsigned int reg, const void *data, size_t len)
2304 return codec->bulk_write_raw(codec, reg, data, len);
2306 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw);
2309 * snd_soc_update_bits - update codec register bits
2310 * @codec: audio codec
2311 * @reg: codec register
2312 * @mask: register mask
2315 * Writes new register value.
2317 * Returns 1 for change, 0 for no change, or negative error code.
2319 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
2320 unsigned int mask, unsigned int value)
2323 unsigned int old, new;
2326 if (codec->using_regmap) {
2327 ret = regmap_update_bits_check(codec->control_data, reg,
2328 mask, value, &change);
2330 ret = snd_soc_read(codec, reg);
2335 new = (old & ~mask) | (value & mask);
2336 change = old != new;
2338 ret = snd_soc_write(codec, reg, new);
2346 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
2349 * snd_soc_update_bits_locked - update codec register bits
2350 * @codec: audio codec
2351 * @reg: codec register
2352 * @mask: register mask
2355 * Writes new register value, and takes the codec mutex.
2357 * Returns 1 for change else 0.
2359 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
2360 unsigned short reg, unsigned int mask,
2365 mutex_lock(&codec->mutex);
2366 change = snd_soc_update_bits(codec, reg, mask, value);
2367 mutex_unlock(&codec->mutex);
2371 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
2374 * snd_soc_test_bits - test register for change
2375 * @codec: audio codec
2376 * @reg: codec register
2377 * @mask: register mask
2380 * Tests a register with a new value and checks if the new value is
2381 * different from the old value.
2383 * Returns 1 for change else 0.
2385 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
2386 unsigned int mask, unsigned int value)
2389 unsigned int old, new;
2391 old = snd_soc_read(codec, reg);
2392 new = (old & ~mask) | value;
2393 change = old != new;
2397 EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2400 * snd_soc_cnew - create new control
2401 * @_template: control template
2402 * @data: control private data
2403 * @long_name: control long name
2404 * @prefix: control name prefix
2406 * Create a new mixer control from a template control.
2408 * Returns 0 for success, else error.
2410 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2411 void *data, const char *long_name,
2414 struct snd_kcontrol_new template;
2415 struct snd_kcontrol *kcontrol;
2418 memcpy(&template, _template, sizeof(template));
2422 long_name = template.name;
2425 name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
2429 template.name = name;
2431 template.name = long_name;
2434 kcontrol = snd_ctl_new1(&template, data);
2440 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2442 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2443 const struct snd_kcontrol_new *controls, int num_controls,
2444 const char *prefix, void *data)
2448 for (i = 0; i < num_controls; i++) {
2449 const struct snd_kcontrol_new *control = &controls[i];
2450 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2451 control->name, prefix));
2453 dev_err(dev, "ASoC: Failed to add %s: %d\n",
2454 control->name, err);
2462 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
2465 struct snd_card *card = soc_card->snd_card;
2466 struct snd_kcontrol *kctl;
2468 if (unlikely(!name))
2471 list_for_each_entry(kctl, &card->controls, list)
2472 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
2476 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
2479 * snd_soc_add_codec_controls - add an array of controls to a codec.
2480 * Convenience function to add a list of controls. Many codecs were
2481 * duplicating this code.
2483 * @codec: codec to add controls to
2484 * @controls: array of controls to add
2485 * @num_controls: number of elements in the array
2487 * Return 0 for success, else error.
2489 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2490 const struct snd_kcontrol_new *controls, int num_controls)
2492 struct snd_card *card = codec->card->snd_card;
2494 return snd_soc_add_controls(card, codec->dev, controls, num_controls,
2495 codec->name_prefix, codec);
2497 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2500 * snd_soc_add_platform_controls - add an array of controls to a platform.
2501 * Convenience function to add a list of controls.
2503 * @platform: platform to add controls to
2504 * @controls: array of controls to add
2505 * @num_controls: number of elements in the array
2507 * Return 0 for success, else error.
2509 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2510 const struct snd_kcontrol_new *controls, int num_controls)
2512 struct snd_card *card = platform->card->snd_card;
2514 return snd_soc_add_controls(card, platform->dev, controls, num_controls,
2517 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2520 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2521 * Convenience function to add a list of controls.
2523 * @soc_card: SoC card to add controls to
2524 * @controls: array of controls to add
2525 * @num_controls: number of elements in the array
2527 * Return 0 for success, else error.
2529 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2530 const struct snd_kcontrol_new *controls, int num_controls)
2532 struct snd_card *card = soc_card->snd_card;
2534 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2537 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2540 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2541 * Convienience function to add a list of controls.
2543 * @dai: DAI to add controls to
2544 * @controls: array of controls to add
2545 * @num_controls: number of elements in the array
2547 * Return 0 for success, else error.
2549 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2550 const struct snd_kcontrol_new *controls, int num_controls)
2552 struct snd_card *card = dai->card->snd_card;
2554 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2557 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2560 * snd_soc_info_enum_double - enumerated double mixer info callback
2561 * @kcontrol: mixer control
2562 * @uinfo: control element information
2564 * Callback to provide information about a double enumerated
2567 * Returns 0 for success.
2569 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2570 struct snd_ctl_elem_info *uinfo)
2572 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2574 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2575 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2576 uinfo->value.enumerated.items = e->max;
2578 if (uinfo->value.enumerated.item > e->max - 1)
2579 uinfo->value.enumerated.item = e->max - 1;
2580 strcpy(uinfo->value.enumerated.name,
2581 e->texts[uinfo->value.enumerated.item]);
2584 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2587 * snd_soc_get_enum_double - enumerated double mixer get callback
2588 * @kcontrol: mixer control
2589 * @ucontrol: control element information
2591 * Callback to get the value of a double enumerated mixer.
2593 * Returns 0 for success.
2595 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2596 struct snd_ctl_elem_value *ucontrol)
2598 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2599 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2602 val = snd_soc_read(codec, e->reg);
2603 ucontrol->value.enumerated.item[0]
2604 = (val >> e->shift_l) & e->mask;
2605 if (e->shift_l != e->shift_r)
2606 ucontrol->value.enumerated.item[1] =
2607 (val >> e->shift_r) & e->mask;
2611 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2614 * snd_soc_put_enum_double - enumerated double mixer put callback
2615 * @kcontrol: mixer control
2616 * @ucontrol: control element information
2618 * Callback to set the value of a double enumerated mixer.
2620 * Returns 0 for success.
2622 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2623 struct snd_ctl_elem_value *ucontrol)
2625 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2626 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2630 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2632 val = ucontrol->value.enumerated.item[0] << e->shift_l;
2633 mask = e->mask << e->shift_l;
2634 if (e->shift_l != e->shift_r) {
2635 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2637 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2638 mask |= e->mask << e->shift_r;
2641 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2643 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2646 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2647 * @kcontrol: mixer control
2648 * @ucontrol: control element information
2650 * Callback to get the value of a double semi enumerated mixer.
2652 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2653 * used for handling bitfield coded enumeration for example.
2655 * Returns 0 for success.
2657 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
2658 struct snd_ctl_elem_value *ucontrol)
2660 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2661 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2662 unsigned int reg_val, val, mux;
2664 reg_val = snd_soc_read(codec, e->reg);
2665 val = (reg_val >> e->shift_l) & e->mask;
2666 for (mux = 0; mux < e->max; mux++) {
2667 if (val == e->values[mux])
2670 ucontrol->value.enumerated.item[0] = mux;
2671 if (e->shift_l != e->shift_r) {
2672 val = (reg_val >> e->shift_r) & e->mask;
2673 for (mux = 0; mux < e->max; mux++) {
2674 if (val == e->values[mux])
2677 ucontrol->value.enumerated.item[1] = mux;
2682 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
2685 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2686 * @kcontrol: mixer control
2687 * @ucontrol: control element information
2689 * Callback to set the value of a double semi enumerated mixer.
2691 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2692 * used for handling bitfield coded enumeration for example.
2694 * Returns 0 for success.
2696 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
2697 struct snd_ctl_elem_value *ucontrol)
2699 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2700 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2704 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2706 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2707 mask = e->mask << e->shift_l;
2708 if (e->shift_l != e->shift_r) {
2709 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2711 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2712 mask |= e->mask << e->shift_r;
2715 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2717 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
2720 * snd_soc_info_volsw - single mixer info callback
2721 * @kcontrol: mixer control
2722 * @uinfo: control element information
2724 * Callback to provide information about a single mixer control, or a double
2725 * mixer control that spans 2 registers.
2727 * Returns 0 for success.
2729 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2730 struct snd_ctl_elem_info *uinfo)
2732 struct soc_mixer_control *mc =
2733 (struct soc_mixer_control *)kcontrol->private_value;
2736 if (!mc->platform_max)
2737 mc->platform_max = mc->max;
2738 platform_max = mc->platform_max;
2740 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2741 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2743 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2745 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2746 uinfo->value.integer.min = 0;
2747 uinfo->value.integer.max = platform_max;
2750 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2753 * snd_soc_get_volsw - single mixer get callback
2754 * @kcontrol: mixer control
2755 * @ucontrol: control element information
2757 * Callback to get the value of a single mixer control, or a double mixer
2758 * control that spans 2 registers.
2760 * Returns 0 for success.
2762 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2763 struct snd_ctl_elem_value *ucontrol)
2765 struct soc_mixer_control *mc =
2766 (struct soc_mixer_control *)kcontrol->private_value;
2767 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2768 unsigned int reg = mc->reg;
2769 unsigned int reg2 = mc->rreg;
2770 unsigned int shift = mc->shift;
2771 unsigned int rshift = mc->rshift;
2773 unsigned int mask = (1 << fls(max)) - 1;
2774 unsigned int invert = mc->invert;
2776 ucontrol->value.integer.value[0] =
2777 (snd_soc_read(codec, reg) >> shift) & mask;
2779 ucontrol->value.integer.value[0] =
2780 max - ucontrol->value.integer.value[0];
2782 if (snd_soc_volsw_is_stereo(mc)) {
2784 ucontrol->value.integer.value[1] =
2785 (snd_soc_read(codec, reg) >> rshift) & mask;
2787 ucontrol->value.integer.value[1] =
2788 (snd_soc_read(codec, reg2) >> shift) & mask;
2790 ucontrol->value.integer.value[1] =
2791 max - ucontrol->value.integer.value[1];
2796 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2799 * snd_soc_put_volsw - single mixer put callback
2800 * @kcontrol: mixer control
2801 * @ucontrol: control element information
2803 * Callback to set the value of a single mixer control, or a double mixer
2804 * control that spans 2 registers.
2806 * Returns 0 for success.
2808 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2809 struct snd_ctl_elem_value *ucontrol)
2811 struct soc_mixer_control *mc =
2812 (struct soc_mixer_control *)kcontrol->private_value;
2813 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2814 unsigned int reg = mc->reg;
2815 unsigned int reg2 = mc->rreg;
2816 unsigned int shift = mc->shift;
2817 unsigned int rshift = mc->rshift;
2819 unsigned int mask = (1 << fls(max)) - 1;
2820 unsigned int invert = mc->invert;
2823 unsigned int val2 = 0;
2824 unsigned int val, val_mask;
2826 val = (ucontrol->value.integer.value[0] & mask);
2829 val_mask = mask << shift;
2831 if (snd_soc_volsw_is_stereo(mc)) {
2832 val2 = (ucontrol->value.integer.value[1] & mask);
2836 val_mask |= mask << rshift;
2837 val |= val2 << rshift;
2839 val2 = val2 << shift;
2843 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2848 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2852 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2855 * snd_soc_get_volsw_sx - single mixer get callback
2856 * @kcontrol: mixer control
2857 * @ucontrol: control element information
2859 * Callback to get the value of a single mixer control, or a double mixer
2860 * control that spans 2 registers.
2862 * Returns 0 for success.
2864 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
2865 struct snd_ctl_elem_value *ucontrol)
2867 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2868 struct soc_mixer_control *mc =
2869 (struct soc_mixer_control *)kcontrol->private_value;
2871 unsigned int reg = mc->reg;
2872 unsigned int reg2 = mc->rreg;
2873 unsigned int shift = mc->shift;
2874 unsigned int rshift = mc->rshift;
2877 int mask = (1 << (fls(min + max) - 1)) - 1;
2879 ucontrol->value.integer.value[0] =
2880 ((snd_soc_read(codec, reg) >> shift) - min) & mask;
2882 if (snd_soc_volsw_is_stereo(mc))
2883 ucontrol->value.integer.value[1] =
2884 ((snd_soc_read(codec, reg2) >> rshift) - min) & mask;
2888 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
2891 * snd_soc_put_volsw_sx - double mixer set callback
2892 * @kcontrol: mixer control
2893 * @uinfo: control element information
2895 * Callback to set the value of a double mixer control that spans 2 registers.
2897 * Returns 0 for success.
2899 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
2900 struct snd_ctl_elem_value *ucontrol)
2902 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2903 struct soc_mixer_control *mc =
2904 (struct soc_mixer_control *)kcontrol->private_value;
2906 unsigned int reg = mc->reg;
2907 unsigned int reg2 = mc->rreg;
2908 unsigned int shift = mc->shift;
2909 unsigned int rshift = mc->rshift;
2912 int mask = (1 << (fls(min + max) - 1)) - 1;
2914 unsigned short val, val_mask, val2 = 0;
2916 val_mask = mask << shift;
2917 val = (ucontrol->value.integer.value[0] + min) & mask;
2920 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2924 if (snd_soc_volsw_is_stereo(mc)) {
2925 val_mask = mask << rshift;
2926 val2 = (ucontrol->value.integer.value[1] + min) & mask;
2927 val2 = val2 << rshift;
2929 if (snd_soc_update_bits_locked(codec, reg2, val_mask, val2))
2934 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
2937 * snd_soc_info_volsw_s8 - signed mixer info callback
2938 * @kcontrol: mixer control
2939 * @uinfo: control element information
2941 * Callback to provide information about a signed mixer control.
2943 * Returns 0 for success.
2945 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2946 struct snd_ctl_elem_info *uinfo)
2948 struct soc_mixer_control *mc =
2949 (struct soc_mixer_control *)kcontrol->private_value;
2953 if (!mc->platform_max)
2954 mc->platform_max = mc->max;
2955 platform_max = mc->platform_max;
2957 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2959 uinfo->value.integer.min = 0;
2960 uinfo->value.integer.max = platform_max - min;
2963 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2966 * snd_soc_get_volsw_s8 - signed mixer get callback
2967 * @kcontrol: mixer control
2968 * @ucontrol: control element information
2970 * Callback to get the value of a signed mixer control.
2972 * Returns 0 for success.
2974 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2975 struct snd_ctl_elem_value *ucontrol)
2977 struct soc_mixer_control *mc =
2978 (struct soc_mixer_control *)kcontrol->private_value;
2979 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2980 unsigned int reg = mc->reg;
2982 int val = snd_soc_read(codec, reg);
2984 ucontrol->value.integer.value[0] =
2985 ((signed char)(val & 0xff))-min;
2986 ucontrol->value.integer.value[1] =
2987 ((signed char)((val >> 8) & 0xff))-min;
2990 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2993 * snd_soc_put_volsw_sgn - signed mixer put callback
2994 * @kcontrol: mixer control
2995 * @ucontrol: control element information
2997 * Callback to set the value of a signed mixer control.
2999 * Returns 0 for success.
3001 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
3002 struct snd_ctl_elem_value *ucontrol)
3004 struct soc_mixer_control *mc =
3005 (struct soc_mixer_control *)kcontrol->private_value;
3006 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3007 unsigned int reg = mc->reg;
3011 val = (ucontrol->value.integer.value[0]+min) & 0xff;
3012 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
3014 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
3016 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
3019 * snd_soc_info_volsw_range - single mixer info callback with range.
3020 * @kcontrol: mixer control
3021 * @uinfo: control element information
3023 * Callback to provide information, within a range, about a single
3026 * returns 0 for success.
3028 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
3029 struct snd_ctl_elem_info *uinfo)
3031 struct soc_mixer_control *mc =
3032 (struct soc_mixer_control *)kcontrol->private_value;
3036 if (!mc->platform_max)
3037 mc->platform_max = mc->max;
3038 platform_max = mc->platform_max;
3040 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3041 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
3042 uinfo->value.integer.min = 0;
3043 uinfo->value.integer.max = platform_max - min;
3047 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
3050 * snd_soc_put_volsw_range - single mixer put value callback with range.
3051 * @kcontrol: mixer control
3052 * @ucontrol: control element information
3054 * Callback to set the value, within a range, for a single mixer control.
3056 * Returns 0 for success.
3058 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
3059 struct snd_ctl_elem_value *ucontrol)
3061 struct soc_mixer_control *mc =
3062 (struct soc_mixer_control *)kcontrol->private_value;
3063 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3064 unsigned int reg = mc->reg;
3065 unsigned int rreg = mc->rreg;
3066 unsigned int shift = mc->shift;
3069 unsigned int mask = (1 << fls(max)) - 1;
3070 unsigned int invert = mc->invert;
3071 unsigned int val, val_mask;
3074 val = ((ucontrol->value.integer.value[0] + min) & mask);
3077 val_mask = mask << shift;
3080 ret = snd_soc_update_bits_locked(codec, reg, val_mask, val);
3084 if (snd_soc_volsw_is_stereo(mc)) {
3085 val = ((ucontrol->value.integer.value[1] + min) & mask);
3088 val_mask = mask << shift;
3091 ret = snd_soc_update_bits_locked(codec, rreg, val_mask, val);
3096 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
3099 * snd_soc_get_volsw_range - single mixer get callback with range
3100 * @kcontrol: mixer control
3101 * @ucontrol: control element information
3103 * Callback to get the value, within a range, of a single mixer control.
3105 * Returns 0 for success.
3107 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
3108 struct snd_ctl_elem_value *ucontrol)
3110 struct soc_mixer_control *mc =
3111 (struct soc_mixer_control *)kcontrol->private_value;
3112 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3113 unsigned int reg = mc->reg;
3114 unsigned int rreg = mc->rreg;
3115 unsigned int shift = mc->shift;
3118 unsigned int mask = (1 << fls(max)) - 1;
3119 unsigned int invert = mc->invert;
3121 ucontrol->value.integer.value[0] =
3122 (snd_soc_read(codec, reg) >> shift) & mask;
3124 ucontrol->value.integer.value[0] =
3125 max - ucontrol->value.integer.value[0];
3126 ucontrol->value.integer.value[0] =
3127 ucontrol->value.integer.value[0] - min;
3129 if (snd_soc_volsw_is_stereo(mc)) {
3130 ucontrol->value.integer.value[1] =
3131 (snd_soc_read(codec, rreg) >> shift) & mask;
3133 ucontrol->value.integer.value[1] =
3134 max - ucontrol->value.integer.value[1];
3135 ucontrol->value.integer.value[1] =
3136 ucontrol->value.integer.value[1] - min;
3141 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
3144 * snd_soc_limit_volume - Set new limit to an existing volume control.
3146 * @codec: where to look for the control
3147 * @name: Name of the control
3148 * @max: new maximum limit
3150 * Return 0 for success, else error.
3152 int snd_soc_limit_volume(struct snd_soc_codec *codec,
3153 const char *name, int max)
3155 struct snd_card *card = codec->card->snd_card;
3156 struct snd_kcontrol *kctl;
3157 struct soc_mixer_control *mc;
3161 /* Sanity check for name and max */
3162 if (unlikely(!name || max <= 0))
3165 list_for_each_entry(kctl, &card->controls, list) {
3166 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
3172 mc = (struct soc_mixer_control *)kctl->private_value;
3173 if (max <= mc->max) {
3174 mc->platform_max = max;
3180 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
3182 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
3183 struct snd_ctl_elem_info *uinfo)
3185 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3186 struct soc_bytes *params = (void *)kcontrol->private_value;
3188 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
3189 uinfo->count = params->num_regs * codec->val_bytes;
3193 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
3195 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
3196 struct snd_ctl_elem_value *ucontrol)
3198 struct soc_bytes *params = (void *)kcontrol->private_value;
3199 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3202 if (codec->using_regmap)
3203 ret = regmap_raw_read(codec->control_data, params->base,
3204 ucontrol->value.bytes.data,
3205 params->num_regs * codec->val_bytes);
3209 /* Hide any masked bytes to ensure consistent data reporting */
3210 if (ret == 0 && params->mask) {
3211 switch (codec->val_bytes) {
3213 ucontrol->value.bytes.data[0] &= ~params->mask;
3216 ((u16 *)(&ucontrol->value.bytes.data))[0]
3220 ((u32 *)(&ucontrol->value.bytes.data))[0]
3230 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
3232 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
3233 struct snd_ctl_elem_value *ucontrol)
3235 struct soc_bytes *params = (void *)kcontrol->private_value;
3236 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3241 if (!codec->using_regmap)
3244 len = params->num_regs * codec->val_bytes;
3246 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
3251 * If we've got a mask then we need to preserve the register
3252 * bits. We shouldn't modify the incoming data so take a
3256 ret = regmap_read(codec->control_data, params->base, &val);
3260 val &= params->mask;
3262 switch (codec->val_bytes) {
3264 ((u8 *)data)[0] &= ~params->mask;
3265 ((u8 *)data)[0] |= val;
3268 ((u16 *)data)[0] &= cpu_to_be16(~params->mask);
3269 ((u16 *)data)[0] |= cpu_to_be16(val);
3272 ((u32 *)data)[0] &= cpu_to_be32(~params->mask);
3273 ((u32 *)data)[0] |= cpu_to_be32(val);
3281 ret = regmap_raw_write(codec->control_data, params->base,
3289 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
3292 * snd_soc_info_xr_sx - signed multi register info callback
3293 * @kcontrol: mreg control
3294 * @uinfo: control element information
3296 * Callback to provide information of a control that can
3297 * span multiple codec registers which together
3298 * forms a single signed value in a MSB/LSB manner.
3300 * Returns 0 for success.
3302 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
3303 struct snd_ctl_elem_info *uinfo)
3305 struct soc_mreg_control *mc =
3306 (struct soc_mreg_control *)kcontrol->private_value;
3307 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3309 uinfo->value.integer.min = mc->min;
3310 uinfo->value.integer.max = mc->max;
3314 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
3317 * snd_soc_get_xr_sx - signed multi register get callback
3318 * @kcontrol: mreg control
3319 * @ucontrol: control element information
3321 * Callback to get the value of a control that can span
3322 * multiple codec registers which together forms a single
3323 * signed value in a MSB/LSB manner. The control supports
3324 * specifying total no of bits used to allow for bitfields
3325 * across the multiple codec registers.
3327 * Returns 0 for success.
3329 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
3330 struct snd_ctl_elem_value *ucontrol)
3332 struct soc_mreg_control *mc =
3333 (struct soc_mreg_control *)kcontrol->private_value;
3334 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3335 unsigned int regbase = mc->regbase;
3336 unsigned int regcount = mc->regcount;
3337 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3338 unsigned int regwmask = (1<<regwshift)-1;
3339 unsigned int invert = mc->invert;
3340 unsigned long mask = (1UL<<mc->nbits)-1;
3344 unsigned long regval;
3347 for (i = 0; i < regcount; i++) {
3348 regval = snd_soc_read(codec, regbase+i) & regwmask;
3349 val |= regval << (regwshift*(regcount-i-1));
3352 if (min < 0 && val > max)
3356 ucontrol->value.integer.value[0] = val;
3360 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
3363 * snd_soc_put_xr_sx - signed multi register get callback
3364 * @kcontrol: mreg control
3365 * @ucontrol: control element information
3367 * Callback to set the value of a control that can span
3368 * multiple codec registers which together forms a single
3369 * signed value in a MSB/LSB manner. The control supports
3370 * specifying total no of bits used to allow for bitfields
3371 * across the multiple codec registers.
3373 * Returns 0 for success.
3375 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
3376 struct snd_ctl_elem_value *ucontrol)
3378 struct soc_mreg_control *mc =
3379 (struct soc_mreg_control *)kcontrol->private_value;
3380 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3381 unsigned int regbase = mc->regbase;
3382 unsigned int regcount = mc->regcount;
3383 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3384 unsigned int regwmask = (1<<regwshift)-1;
3385 unsigned int invert = mc->invert;
3386 unsigned long mask = (1UL<<mc->nbits)-1;
3388 long val = ucontrol->value.integer.value[0];
3389 unsigned int i, regval, regmask;
3395 for (i = 0; i < regcount; i++) {
3396 regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
3397 regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
3398 err = snd_soc_update_bits_locked(codec, regbase+i,
3406 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
3409 * snd_soc_get_strobe - strobe get callback
3410 * @kcontrol: mixer control
3411 * @ucontrol: control element information
3413 * Callback get the value of a strobe mixer control.
3415 * Returns 0 for success.
3417 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
3418 struct snd_ctl_elem_value *ucontrol)
3420 struct soc_mixer_control *mc =
3421 (struct soc_mixer_control *)kcontrol->private_value;
3422 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3423 unsigned int reg = mc->reg;
3424 unsigned int shift = mc->shift;
3425 unsigned int mask = 1 << shift;
3426 unsigned int invert = mc->invert != 0;
3427 unsigned int val = snd_soc_read(codec, reg) & mask;
3429 if (shift != 0 && val != 0)
3431 ucontrol->value.enumerated.item[0] = val ^ invert;
3435 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
3438 * snd_soc_put_strobe - strobe put callback
3439 * @kcontrol: mixer control
3440 * @ucontrol: control element information
3442 * Callback strobe a register bit to high then low (or the inverse)
3443 * in one pass of a single mixer enum control.
3445 * Returns 1 for success.
3447 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
3448 struct snd_ctl_elem_value *ucontrol)
3450 struct soc_mixer_control *mc =
3451 (struct soc_mixer_control *)kcontrol->private_value;
3452 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3453 unsigned int reg = mc->reg;
3454 unsigned int shift = mc->shift;
3455 unsigned int mask = 1 << shift;
3456 unsigned int invert = mc->invert != 0;
3457 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
3458 unsigned int val1 = (strobe ^ invert) ? mask : 0;
3459 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
3462 err = snd_soc_update_bits_locked(codec, reg, mask, val1);
3466 err = snd_soc_update_bits_locked(codec, reg, mask, val2);
3469 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);
3472 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3474 * @clk_id: DAI specific clock ID
3475 * @freq: new clock frequency in Hz
3476 * @dir: new clock direction - input/output.
3478 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3480 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
3481 unsigned int freq, int dir)
3483 if (dai->driver && dai->driver->ops->set_sysclk)
3484 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
3485 else if (dai->codec && dai->codec->driver->set_sysclk)
3486 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
3491 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
3494 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3496 * @clk_id: DAI specific clock ID
3497 * @source: Source for the clock
3498 * @freq: new clock frequency in Hz
3499 * @dir: new clock direction - input/output.
3501 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3503 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
3504 int source, unsigned int freq, int dir)
3506 if (codec->driver->set_sysclk)
3507 return codec->driver->set_sysclk(codec, clk_id, source,
3512 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
3515 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3517 * @div_id: DAI specific clock divider ID
3518 * @div: new clock divisor.
3520 * Configures the clock dividers. This is used to derive the best DAI bit and
3521 * frame clocks from the system or master clock. It's best to set the DAI bit
3522 * and frame clocks as low as possible to save system power.
3524 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
3525 int div_id, int div)
3527 if (dai->driver && dai->driver->ops->set_clkdiv)
3528 return dai->driver->ops->set_clkdiv(dai, div_id, div);
3532 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
3535 * snd_soc_dai_set_pll - configure DAI PLL.
3537 * @pll_id: DAI specific PLL ID
3538 * @source: DAI specific source for the PLL
3539 * @freq_in: PLL input clock frequency in Hz
3540 * @freq_out: requested PLL output clock frequency in Hz
3542 * Configures and enables PLL to generate output clock based on input clock.
3544 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
3545 unsigned int freq_in, unsigned int freq_out)
3547 if (dai->driver && dai->driver->ops->set_pll)
3548 return dai->driver->ops->set_pll(dai, pll_id, source,
3550 else if (dai->codec && dai->codec->driver->set_pll)
3551 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
3556 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
3559 * snd_soc_codec_set_pll - configure codec PLL.
3561 * @pll_id: DAI specific PLL ID
3562 * @source: DAI specific source for the PLL
3563 * @freq_in: PLL input clock frequency in Hz
3564 * @freq_out: requested PLL output clock frequency in Hz
3566 * Configures and enables PLL to generate output clock based on input clock.
3568 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
3569 unsigned int freq_in, unsigned int freq_out)
3571 if (codec->driver->set_pll)
3572 return codec->driver->set_pll(codec, pll_id, source,
3577 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
3580 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3582 * @fmt: SND_SOC_DAIFMT_ format value.
3584 * Configures the DAI hardware format and clocking.
3586 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
3588 if (dai->driver == NULL)
3590 if (dai->driver->ops->set_fmt == NULL)
3592 return dai->driver->ops->set_fmt(dai, fmt);
3594 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
3597 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3599 * @tx_mask: bitmask representing active TX slots.
3600 * @rx_mask: bitmask representing active RX slots.
3601 * @slots: Number of slots in use.
3602 * @slot_width: Width in bits for each slot.
3604 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3607 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
3608 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3610 if (dai->driver && dai->driver->ops->set_tdm_slot)
3611 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3616 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3619 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3621 * @tx_num: how many TX channels
3622 * @tx_slot: pointer to an array which imply the TX slot number channel
3624 * @rx_num: how many RX channels
3625 * @rx_slot: pointer to an array which imply the RX slot number channel
3628 * configure the relationship between channel number and TDM slot number.
3630 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3631 unsigned int tx_num, unsigned int *tx_slot,
3632 unsigned int rx_num, unsigned int *rx_slot)
3634 if (dai->driver && dai->driver->ops->set_channel_map)
3635 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3640 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3643 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3645 * @tristate: tristate enable
3647 * Tristates the DAI so that others can use it.
3649 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3651 if (dai->driver && dai->driver->ops->set_tristate)
3652 return dai->driver->ops->set_tristate(dai, tristate);
3656 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3659 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3661 * @mute: mute enable
3662 * @direction: stream to mute
3664 * Mutes the DAI DAC.
3666 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
3672 if (dai->driver->ops->mute_stream)
3673 return dai->driver->ops->mute_stream(dai, mute, direction);
3674 else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
3675 dai->driver->ops->digital_mute)
3676 return dai->driver->ops->digital_mute(dai, mute);
3680 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3683 * snd_soc_register_card - Register a card with the ASoC core
3685 * @card: Card to register
3688 int snd_soc_register_card(struct snd_soc_card *card)
3692 if (!card->name || !card->dev)
3695 for (i = 0; i < card->num_links; i++) {
3696 struct snd_soc_dai_link *link = &card->dai_link[i];
3699 * Codec must be specified by 1 of name or OF node,
3700 * not both or neither.
3702 if (!!link->codec_name == !!link->codec_of_node) {
3704 "ASoC: Neither/both codec name/of_node are set for %s\n",
3708 /* Codec DAI name must be specified */
3709 if (!link->codec_dai_name) {
3711 "ASoC: codec_dai_name not set for %s\n",
3717 * Platform may be specified by either name or OF node, but
3718 * can be left unspecified, and a dummy platform will be used.
3720 if (link->platform_name && link->platform_of_node) {
3722 "ASoC: Both platform name/of_node are set for %s\n",
3728 * CPU device may be specified by either name or OF node, but
3729 * can be left unspecified, and will be matched based on DAI
3732 if (link->cpu_name && link->cpu_of_node) {
3734 "ASoC: Neither/both cpu name/of_node are set for %s\n",
3739 * At least one of CPU DAI name or CPU device name/node must be
3742 if (!link->cpu_dai_name &&
3743 !(link->cpu_name || link->cpu_of_node)) {
3745 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
3751 dev_set_drvdata(card->dev, card);
3753 snd_soc_initialize_card_lists(card);
3755 soc_init_card_debugfs(card);
3757 card->rtd = devm_kzalloc(card->dev,
3758 sizeof(struct snd_soc_pcm_runtime) *
3759 (card->num_links + card->num_aux_devs),
3761 if (card->rtd == NULL)
3764 card->rtd_aux = &card->rtd[card->num_links];
3766 for (i = 0; i < card->num_links; i++)
3767 card->rtd[i].dai_link = &card->dai_link[i];
3769 INIT_LIST_HEAD(&card->list);
3770 INIT_LIST_HEAD(&card->dapm_dirty);
3771 card->instantiated = 0;
3772 mutex_init(&card->mutex);
3773 mutex_init(&card->dapm_mutex);
3775 ret = snd_soc_instantiate_card(card);
3777 soc_cleanup_card_debugfs(card);
3781 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3784 * snd_soc_unregister_card - Unregister a card with the ASoC core
3786 * @card: Card to unregister
3789 int snd_soc_unregister_card(struct snd_soc_card *card)
3791 if (card->instantiated)
3792 soc_cleanup_card_resources(card);
3793 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
3797 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3800 * Simplify DAI link configuration by removing ".-1" from device names
3801 * and sanitizing names.
3803 static char *fmt_single_name(struct device *dev, int *id)
3805 char *found, name[NAME_SIZE];
3808 if (dev_name(dev) == NULL)
3811 strlcpy(name, dev_name(dev), NAME_SIZE);
3813 /* are we a "%s.%d" name (platform and SPI components) */
3814 found = strstr(name, dev->driver->name);
3817 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3819 /* discard ID from name if ID == -1 */
3821 found[strlen(dev->driver->name)] = '\0';
3825 /* I2C component devices are named "bus-addr" */
3826 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3827 char tmp[NAME_SIZE];
3829 /* create unique ID number from I2C addr and bus */
3830 *id = ((id1 & 0xffff) << 16) + id2;
3832 /* sanitize component name for DAI link creation */
3833 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3834 strlcpy(name, tmp, NAME_SIZE);
3839 return kstrdup(name, GFP_KERNEL);
3843 * Simplify DAI link naming for single devices with multiple DAIs by removing
3844 * any ".-1" and using the DAI name (instead of device name).
3846 static inline char *fmt_multiple_name(struct device *dev,
3847 struct snd_soc_dai_driver *dai_drv)
3849 if (dai_drv->name == NULL) {
3851 "ASoC: error - multiple DAI %s registered with no name\n",
3856 return kstrdup(dai_drv->name, GFP_KERNEL);
3860 * snd_soc_register_dai - Register a DAI with the ASoC core
3862 * @dai: DAI to register
3864 static int snd_soc_register_dai(struct device *dev,
3865 struct snd_soc_dai_driver *dai_drv)
3867 struct snd_soc_codec *codec;
3868 struct snd_soc_dai *dai;
3870 dev_dbg(dev, "ASoC: dai register %s\n", dev_name(dev));
3872 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3876 /* create DAI component name */
3877 dai->name = fmt_single_name(dev, &dai->id);
3878 if (dai->name == NULL) {
3884 dai->driver = dai_drv;
3885 dai->dapm.dev = dev;
3886 if (!dai->driver->ops)
3887 dai->driver->ops = &null_dai_ops;
3889 mutex_lock(&client_mutex);
3891 list_for_each_entry(codec, &codec_list, list) {
3892 if (codec->dev == dev) {
3893 dev_dbg(dev, "ASoC: Mapped DAI %s to CODEC %s\n",
3894 dai->name, codec->name);
3901 dai->dapm.idle_bias_off = 1;
3903 list_add(&dai->list, &dai_list);
3905 mutex_unlock(&client_mutex);
3907 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
3913 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3915 * @dai: DAI to unregister
3917 static void snd_soc_unregister_dai(struct device *dev)
3919 struct snd_soc_dai *dai;
3921 list_for_each_entry(dai, &dai_list, list) {
3922 if (dev == dai->dev)
3928 mutex_lock(&client_mutex);
3929 list_del(&dai->list);
3930 mutex_unlock(&client_mutex);
3932 dev_dbg(dev, "ASoC: Unregistered DAI '%s'\n", dai->name);
3938 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3940 * @dai: Array of DAIs to register
3941 * @count: Number of DAIs
3943 static int snd_soc_register_dais(struct device *dev,
3944 struct snd_soc_dai_driver *dai_drv, size_t count)
3946 struct snd_soc_codec *codec;
3947 struct snd_soc_dai *dai;
3950 dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
3952 for (i = 0; i < count; i++) {
3954 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3960 /* create DAI component name */
3961 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3962 if (dai->name == NULL) {
3969 dai->driver = &dai_drv[i];
3970 if (dai->driver->id)
3971 dai->id = dai->driver->id;
3974 dai->dapm.dev = dev;
3975 if (!dai->driver->ops)
3976 dai->driver->ops = &null_dai_ops;
3978 mutex_lock(&client_mutex);
3980 list_for_each_entry(codec, &codec_list, list) {
3981 if (codec->dev == dev) {
3983 "ASoC: Mapped DAI %s to CODEC %s\n",
3984 dai->name, codec->name);
3991 dai->dapm.idle_bias_off = 1;
3993 list_add(&dai->list, &dai_list);
3995 mutex_unlock(&client_mutex);
3997 dev_dbg(dai->dev, "ASoC: Registered DAI '%s'\n", dai->name);
4003 for (i--; i >= 0; i--)
4004 snd_soc_unregister_dai(dev);
4010 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
4012 * @dai: Array of DAIs to unregister
4013 * @count: Number of DAIs
4015 static void snd_soc_unregister_dais(struct device *dev, size_t count)
4019 for (i = 0; i < count; i++)
4020 snd_soc_unregister_dai(dev);
4024 * snd_soc_add_platform - Add a platform to the ASoC core
4025 * @dev: The parent device for the platform
4026 * @platform: The platform to add
4027 * @platform_driver: The driver for the platform
4029 int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
4030 const struct snd_soc_platform_driver *platform_drv)
4032 /* create platform component name */
4033 platform->name = fmt_single_name(dev, &platform->id);
4034 if (platform->name == NULL)
4037 platform->dev = dev;
4038 platform->driver = platform_drv;
4039 platform->dapm.dev = dev;
4040 platform->dapm.platform = platform;
4041 platform->dapm.stream_event = platform_drv->stream_event;
4042 mutex_init(&platform->mutex);
4044 mutex_lock(&client_mutex);
4045 list_add(&platform->list, &platform_list);
4046 mutex_unlock(&client_mutex);
4048 dev_dbg(dev, "ASoC: Registered platform '%s'\n", platform->name);
4052 EXPORT_SYMBOL_GPL(snd_soc_add_platform);
4055 * snd_soc_register_platform - Register a platform with the ASoC core
4057 * @platform: platform to register
4059 int snd_soc_register_platform(struct device *dev,
4060 const struct snd_soc_platform_driver *platform_drv)
4062 struct snd_soc_platform *platform;
4065 dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
4067 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
4068 if (platform == NULL)
4071 ret = snd_soc_add_platform(dev, platform, platform_drv);
4077 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
4080 * snd_soc_remove_platform - Remove a platform from the ASoC core
4081 * @platform: the platform to remove
4083 void snd_soc_remove_platform(struct snd_soc_platform *platform)
4085 mutex_lock(&client_mutex);
4086 list_del(&platform->list);
4087 mutex_unlock(&client_mutex);
4089 dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
4091 kfree(platform->name);
4093 EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
4095 struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
4097 struct snd_soc_platform *platform;
4099 list_for_each_entry(platform, &platform_list, list) {
4100 if (dev == platform->dev)
4106 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
4109 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
4111 * @platform: platform to unregister
4113 void snd_soc_unregister_platform(struct device *dev)
4115 struct snd_soc_platform *platform;
4117 platform = snd_soc_lookup_platform(dev);
4121 snd_soc_remove_platform(platform);
4124 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
4126 static u64 codec_format_map[] = {
4127 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
4128 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
4129 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
4130 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
4131 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
4132 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
4133 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4134 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
4135 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
4136 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
4137 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
4138 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
4139 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
4140 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
4141 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
4142 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
4145 /* Fix up the DAI formats for endianness: codecs don't actually see
4146 * the endianness of the data but we're using the CPU format
4147 * definitions which do need to include endianness so we ensure that
4148 * codec DAIs always have both big and little endian variants set.
4150 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
4154 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
4155 if (stream->formats & codec_format_map[i])
4156 stream->formats |= codec_format_map[i];
4160 * snd_soc_register_codec - Register a codec with the ASoC core
4162 * @codec: codec to register
4164 int snd_soc_register_codec(struct device *dev,
4165 const struct snd_soc_codec_driver *codec_drv,
4166 struct snd_soc_dai_driver *dai_drv,
4170 struct snd_soc_codec *codec;
4173 dev_dbg(dev, "codec register %s\n", dev_name(dev));
4175 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
4179 /* create CODEC component name */
4180 codec->name = fmt_single_name(dev, &codec->id);
4181 if (codec->name == NULL) {
4186 if (codec_drv->compress_type)
4187 codec->compress_type = codec_drv->compress_type;
4189 codec->compress_type = SND_SOC_FLAT_COMPRESSION;
4191 codec->write = codec_drv->write;
4192 codec->read = codec_drv->read;
4193 codec->volatile_register = codec_drv->volatile_register;
4194 codec->readable_register = codec_drv->readable_register;
4195 codec->writable_register = codec_drv->writable_register;
4196 codec->ignore_pmdown_time = codec_drv->ignore_pmdown_time;
4197 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
4198 codec->dapm.dev = dev;
4199 codec->dapm.codec = codec;
4200 codec->dapm.seq_notifier = codec_drv->seq_notifier;
4201 codec->dapm.stream_event = codec_drv->stream_event;
4203 codec->driver = codec_drv;
4204 codec->num_dai = num_dai;
4205 mutex_init(&codec->mutex);
4207 /* allocate CODEC register cache */
4208 if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
4209 reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
4210 codec->reg_size = reg_size;
4211 /* it is necessary to make a copy of the default register cache
4212 * because in the case of using a compression type that requires
4213 * the default register cache to be marked as the
4214 * kernel might have freed the array by the time we initialize
4217 if (codec_drv->reg_cache_default) {
4218 codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
4219 reg_size, GFP_KERNEL);
4220 if (!codec->reg_def_copy) {
4222 goto fail_codec_name;
4227 if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
4228 if (!codec->volatile_register)
4229 codec->volatile_register = snd_soc_default_volatile_register;
4230 if (!codec->readable_register)
4231 codec->readable_register = snd_soc_default_readable_register;
4232 if (!codec->writable_register)
4233 codec->writable_register = snd_soc_default_writable_register;
4236 for (i = 0; i < num_dai; i++) {
4237 fixup_codec_formats(&dai_drv[i].playback);
4238 fixup_codec_formats(&dai_drv[i].capture);
4241 mutex_lock(&client_mutex);
4242 list_add(&codec->list, &codec_list);
4243 mutex_unlock(&client_mutex);
4245 /* register any DAIs */
4246 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
4248 dev_err(codec->dev, "ASoC: Failed to regster DAIs: %d\n", ret);
4249 goto fail_codec_name;
4252 dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n", codec->name);
4256 mutex_lock(&client_mutex);
4257 list_del(&codec->list);
4258 mutex_unlock(&client_mutex);
4265 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
4268 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4270 * @codec: codec to unregister
4272 void snd_soc_unregister_codec(struct device *dev)
4274 struct snd_soc_codec *codec;
4276 list_for_each_entry(codec, &codec_list, list) {
4277 if (dev == codec->dev)
4283 snd_soc_unregister_dais(dev, codec->num_dai);
4285 mutex_lock(&client_mutex);
4286 list_del(&codec->list);
4287 mutex_unlock(&client_mutex);
4289 dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n", codec->name);
4291 snd_soc_cache_exit(codec);
4292 kfree(codec->reg_def_copy);
4296 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
4300 * snd_soc_register_component - Register a component with the ASoC core
4303 int snd_soc_register_component(struct device *dev,
4304 const struct snd_soc_component_driver *cmpnt_drv,
4305 struct snd_soc_dai_driver *dai_drv,
4308 struct snd_soc_component *cmpnt;
4311 dev_dbg(dev, "component register %s\n", dev_name(dev));
4313 cmpnt = devm_kzalloc(dev, sizeof(*cmpnt), GFP_KERNEL);
4315 dev_err(dev, "ASoC: Failed to allocate memory\n");
4319 cmpnt->name = fmt_single_name(dev, &cmpnt->id);
4321 dev_err(dev, "ASoC: Failed to simplifying name\n");
4326 cmpnt->driver = cmpnt_drv;
4327 cmpnt->num_dai = num_dai;
4330 * snd_soc_register_dai() uses fmt_single_name(), and
4331 * snd_soc_register_dais() uses fmt_multiple_name()
4332 * for dai->name which is used for name based matching
4335 ret = snd_soc_register_dai(dev, dai_drv);
4337 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
4339 dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret);
4340 goto error_component_name;
4343 mutex_lock(&client_mutex);
4344 list_add(&cmpnt->list, &component_list);
4345 mutex_unlock(&client_mutex);
4347 dev_dbg(cmpnt->dev, "ASoC: Registered component '%s'\n", cmpnt->name);
4351 error_component_name:
4356 EXPORT_SYMBOL_GPL(snd_soc_register_component);
4359 * snd_soc_unregister_component - Unregister a component from the ASoC core
4362 void snd_soc_unregister_component(struct device *dev)
4364 struct snd_soc_component *cmpnt;
4366 list_for_each_entry(cmpnt, &component_list, list) {
4367 if (dev == cmpnt->dev)
4373 snd_soc_unregister_dais(dev, cmpnt->num_dai);
4375 mutex_lock(&client_mutex);
4376 list_del(&cmpnt->list);
4377 mutex_unlock(&client_mutex);
4379 dev_dbg(dev, "ASoC: Unregistered component '%s'\n", cmpnt->name);
4382 EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
4384 /* Retrieve a card's name from device tree */
4385 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
4386 const char *propname)
4388 struct device_node *np = card->dev->of_node;
4391 ret = of_property_read_string_index(np, propname, 0, &card->name);
4393 * EINVAL means the property does not exist. This is fine providing
4394 * card->name was previously set, which is checked later in
4395 * snd_soc_register_card.
4397 if (ret < 0 && ret != -EINVAL) {
4399 "ASoC: Property '%s' could not be read: %d\n",
4406 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
4408 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
4409 const char *propname)
4411 struct device_node *np = card->dev->of_node;
4413 struct snd_soc_dapm_route *routes;
4416 num_routes = of_property_count_strings(np, propname);
4417 if (num_routes < 0 || num_routes & 1) {
4419 "ASoC: Property '%s' does not exist or its length is not even\n",
4425 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4430 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
4434 "ASoC: Could not allocate DAPM route table\n");
4438 for (i = 0; i < num_routes; i++) {
4439 ret = of_property_read_string_index(np, propname,
4440 2 * i, &routes[i].sink);
4443 "ASoC: Property '%s' index %d could not be read: %d\n",
4444 propname, 2 * i, ret);
4447 ret = of_property_read_string_index(np, propname,
4448 (2 * i) + 1, &routes[i].source);
4451 "ASoC: Property '%s' index %d could not be read: %d\n",
4452 propname, (2 * i) + 1, ret);
4457 card->num_dapm_routes = num_routes;
4458 card->dapm_routes = routes;
4462 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
4464 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
4469 unsigned int format = 0;
4475 } of_fmt_table[] = {
4476 { "i2s", SND_SOC_DAIFMT_I2S },
4477 { "right_j", SND_SOC_DAIFMT_RIGHT_J },
4478 { "left_j", SND_SOC_DAIFMT_LEFT_J },
4479 { "dsp_a", SND_SOC_DAIFMT_DSP_A },
4480 { "dsp_b", SND_SOC_DAIFMT_DSP_B },
4481 { "ac97", SND_SOC_DAIFMT_AC97 },
4482 { "pdm", SND_SOC_DAIFMT_PDM},
4483 { "msb", SND_SOC_DAIFMT_MSB },
4484 { "lsb", SND_SOC_DAIFMT_LSB },
4491 * check "[prefix]format = xxx"
4492 * SND_SOC_DAIFMT_FORMAT_MASK area
4494 snprintf(prop, sizeof(prop), "%sformat", prefix);
4495 ret = of_property_read_string(np, prop, &str);
4497 for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
4498 if (strcmp(str, of_fmt_table[i].name) == 0) {
4499 format |= of_fmt_table[i].val;
4506 * check "[prefix]continuous-clock"
4507 * SND_SOC_DAIFMT_CLOCK_MASK area
4509 snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
4510 if (of_get_property(np, prop, NULL))
4511 format |= SND_SOC_DAIFMT_CONT;
4513 format |= SND_SOC_DAIFMT_GATED;
4516 * check "[prefix]bitclock-inversion"
4517 * check "[prefix]frame-inversion"
4518 * SND_SOC_DAIFMT_INV_MASK area
4520 snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
4521 bit = !!of_get_property(np, prop, NULL);
4523 snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
4524 frame = !!of_get_property(np, prop, NULL);
4526 switch ((bit << 4) + frame) {
4528 format |= SND_SOC_DAIFMT_IB_IF;
4531 format |= SND_SOC_DAIFMT_IB_NF;
4534 format |= SND_SOC_DAIFMT_NB_IF;
4537 /* SND_SOC_DAIFMT_NB_NF is default */
4542 * check "[prefix]bitclock-master"
4543 * check "[prefix]frame-master"
4544 * SND_SOC_DAIFMT_MASTER_MASK area
4546 snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
4547 bit = !!of_get_property(np, prop, NULL);
4549 snprintf(prop, sizeof(prop), "%sframe-master", prefix);
4550 frame = !!of_get_property(np, prop, NULL);
4552 switch ((bit << 4) + frame) {
4554 format |= SND_SOC_DAIFMT_CBM_CFM;
4557 format |= SND_SOC_DAIFMT_CBM_CFS;
4560 format |= SND_SOC_DAIFMT_CBS_CFM;
4563 format |= SND_SOC_DAIFMT_CBS_CFS;
4569 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
4571 static int __init snd_soc_init(void)
4573 #ifdef CONFIG_DEBUG_FS
4574 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
4575 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
4576 pr_warn("ASoC: Failed to create debugfs directory\n");
4577 snd_soc_debugfs_root = NULL;
4580 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
4582 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4584 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
4586 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4588 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
4589 &platform_list_fops))
4590 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4593 snd_soc_util_init();
4595 return platform_driver_register(&soc_driver);
4597 module_init(snd_soc_init);
4599 static void __exit snd_soc_exit(void)
4601 snd_soc_util_exit();
4603 #ifdef CONFIG_DEBUG_FS
4604 debugfs_remove_recursive(snd_soc_debugfs_root);
4606 platform_driver_unregister(&soc_driver);
4608 module_exit(snd_soc_exit);
4610 /* Module information */
4611 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4612 MODULE_DESCRIPTION("ALSA SoC Core");
4613 MODULE_LICENSE("GPL");
4614 MODULE_ALIAS("platform:soc-audio");