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/slab.h>
34 #include <sound/ac97_codec.h>
35 #include <sound/core.h>
36 #include <sound/jack.h>
37 #include <sound/pcm.h>
38 #include <sound/pcm_params.h>
39 #include <sound/soc.h>
40 #include <sound/initval.h>
42 #define CREATE_TRACE_POINTS
43 #include <trace/events/asoc.h>
47 static DEFINE_MUTEX(pcm_mutex);
48 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
50 #ifdef CONFIG_DEBUG_FS
51 static struct dentry *debugfs_root;
54 static DEFINE_MUTEX(client_mutex);
55 static LIST_HEAD(card_list);
56 static LIST_HEAD(dai_list);
57 static LIST_HEAD(platform_list);
58 static LIST_HEAD(codec_list);
60 static int snd_soc_register_card(struct snd_soc_card *card);
61 static int snd_soc_unregister_card(struct snd_soc_card *card);
62 static int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num);
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)");
74 * This function forces any delayed work to be queued and run.
76 static int run_delayed_work(struct delayed_work *dwork)
80 /* cancel any work waiting to be queued. */
81 ret = cancel_delayed_work(dwork);
83 /* if there was any work waiting then we run it now and
84 * wait for it's completion */
86 schedule_delayed_work(dwork, 0);
87 flush_scheduled_work();
92 /* codec register dump */
93 static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf)
95 int ret, i, step = 1, count = 0;
97 if (!codec->driver->reg_cache_size)
100 if (codec->driver->reg_cache_step)
101 step = codec->driver->reg_cache_step;
103 count += sprintf(buf, "%s registers\n", codec->name);
104 for (i = 0; i < codec->driver->reg_cache_size; i += step) {
105 if (codec->driver->readable_register && !codec->driver->readable_register(i))
108 count += sprintf(buf + count, "%2x: ", i);
109 if (count >= PAGE_SIZE - 1)
112 if (codec->driver->display_register) {
113 count += codec->driver->display_register(codec, buf + count,
114 PAGE_SIZE - count, i);
116 /* If the read fails it's almost certainly due to
117 * the register being volatile and the device being
120 ret = codec->driver->read(codec, i);
122 count += snprintf(buf + count,
126 count += snprintf(buf + count,
128 "<no data: %d>", ret);
131 if (count >= PAGE_SIZE - 1)
134 count += snprintf(buf + count, PAGE_SIZE - count, "\n");
135 if (count >= PAGE_SIZE - 1)
139 /* Truncate count; min() would cause a warning */
140 if (count >= PAGE_SIZE)
141 count = PAGE_SIZE - 1;
145 static ssize_t codec_reg_show(struct device *dev,
146 struct device_attribute *attr, char *buf)
148 struct snd_soc_pcm_runtime *rtd =
149 container_of(dev, struct snd_soc_pcm_runtime, dev);
151 return soc_codec_reg_show(rtd->codec, buf);
154 static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
156 static ssize_t pmdown_time_show(struct device *dev,
157 struct device_attribute *attr, char *buf)
159 struct snd_soc_pcm_runtime *rtd =
160 container_of(dev, struct snd_soc_pcm_runtime, dev);
162 return sprintf(buf, "%ld\n", rtd->pmdown_time);
165 static ssize_t pmdown_time_set(struct device *dev,
166 struct device_attribute *attr,
167 const char *buf, size_t count)
169 struct snd_soc_pcm_runtime *rtd =
170 container_of(dev, struct snd_soc_pcm_runtime, dev);
173 ret = strict_strtol(buf, 10, &rtd->pmdown_time);
180 static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
182 #ifdef CONFIG_DEBUG_FS
183 static int codec_reg_open_file(struct inode *inode, struct file *file)
185 file->private_data = inode->i_private;
189 static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
190 size_t count, loff_t *ppos)
193 struct snd_soc_codec *codec = file->private_data;
194 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
197 ret = soc_codec_reg_show(codec, buf);
199 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
204 static ssize_t codec_reg_write_file(struct file *file,
205 const char __user *user_buf, size_t count, loff_t *ppos)
210 unsigned long reg, value;
212 struct snd_soc_codec *codec = file->private_data;
214 buf_size = min(count, (sizeof(buf)-1));
215 if (copy_from_user(buf, user_buf, buf_size))
219 if (codec->driver->reg_cache_step)
220 step = codec->driver->reg_cache_step;
222 while (*start == ' ')
224 reg = simple_strtoul(start, &start, 16);
225 if ((reg >= codec->driver->reg_cache_size) || (reg % step))
227 while (*start == ' ')
229 if (strict_strtoul(start, 16, &value))
231 codec->driver->write(codec, reg, value);
235 static const struct file_operations codec_reg_fops = {
236 .open = codec_reg_open_file,
237 .read = codec_reg_read_file,
238 .write = codec_reg_write_file,
239 .llseek = default_llseek,
242 static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
244 struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
246 codec->debugfs_codec_root = debugfs_create_dir(codec->name,
248 if (!codec->debugfs_codec_root) {
250 "ASoC: Failed to create codec debugfs directory\n");
254 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
255 codec->debugfs_codec_root,
256 codec, &codec_reg_fops);
257 if (!codec->debugfs_reg)
259 "ASoC: Failed to create codec register debugfs file\n");
261 codec->dapm.debugfs_dapm = debugfs_create_dir("dapm",
262 codec->debugfs_codec_root);
263 if (!codec->dapm.debugfs_dapm)
265 "Failed to create DAPM debugfs directory\n");
267 snd_soc_dapm_debugfs_init(&codec->dapm);
270 static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
272 debugfs_remove_recursive(codec->debugfs_codec_root);
275 static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
276 size_t count, loff_t *ppos)
278 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
279 ssize_t len, ret = 0;
280 struct snd_soc_codec *codec;
285 list_for_each_entry(codec, &codec_list, list) {
286 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
290 if (ret > PAGE_SIZE) {
297 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
304 static const struct file_operations codec_list_fops = {
305 .read = codec_list_read_file,
306 .llseek = default_llseek,/* read accesses f_pos */
309 static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
310 size_t count, loff_t *ppos)
312 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
313 ssize_t len, ret = 0;
314 struct snd_soc_dai *dai;
319 list_for_each_entry(dai, &dai_list, list) {
320 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", dai->name);
323 if (ret > PAGE_SIZE) {
329 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
336 static const struct file_operations dai_list_fops = {
337 .read = dai_list_read_file,
338 .llseek = default_llseek,/* read accesses f_pos */
341 static ssize_t platform_list_read_file(struct file *file,
342 char __user *user_buf,
343 size_t count, loff_t *ppos)
345 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
346 ssize_t len, ret = 0;
347 struct snd_soc_platform *platform;
352 list_for_each_entry(platform, &platform_list, list) {
353 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
357 if (ret > PAGE_SIZE) {
363 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
370 static const struct file_operations platform_list_fops = {
371 .read = platform_list_read_file,
372 .llseek = default_llseek,/* read accesses f_pos */
375 static void soc_init_card_debugfs(struct snd_soc_card *card)
377 card->debugfs_card_root = debugfs_create_dir(card->name,
379 if (!card->debugfs_card_root) {
381 "ASoC: Failed to create codec debugfs directory\n");
385 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
386 card->debugfs_card_root,
388 if (!card->debugfs_pop_time)
390 "Failed to create pop time debugfs file\n");
393 static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
395 debugfs_remove_recursive(card->debugfs_card_root);
400 static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
404 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
408 static inline void soc_init_card_debugfs(struct snd_soc_card *card)
412 static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
417 #ifdef CONFIG_SND_SOC_AC97_BUS
418 /* unregister ac97 codec */
419 static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
421 if (codec->ac97->dev.bus)
422 device_unregister(&codec->ac97->dev);
426 /* stop no dev release warning */
427 static void soc_ac97_device_release(struct device *dev){}
429 /* register ac97 codec to bus */
430 static int soc_ac97_dev_register(struct snd_soc_codec *codec)
434 codec->ac97->dev.bus = &ac97_bus_type;
435 codec->ac97->dev.parent = codec->card->dev;
436 codec->ac97->dev.release = soc_ac97_device_release;
438 dev_set_name(&codec->ac97->dev, "%d-%d:%s",
439 codec->card->snd_card->number, 0, codec->name);
440 err = device_register(&codec->ac97->dev);
442 snd_printk(KERN_ERR "Can't register ac97 bus\n");
443 codec->ac97->dev.bus = NULL;
450 static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream)
452 struct snd_soc_pcm_runtime *rtd = substream->private_data;
453 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
454 struct snd_soc_dai *codec_dai = rtd->codec_dai;
457 if (codec_dai->driver->symmetric_rates || cpu_dai->driver->symmetric_rates ||
458 rtd->dai_link->symmetric_rates) {
459 dev_dbg(&rtd->dev, "Symmetry forces %dHz rate\n",
462 ret = snd_pcm_hw_constraint_minmax(substream->runtime,
463 SNDRV_PCM_HW_PARAM_RATE,
468 "Unable to apply rate symmetry constraint: %d\n", ret);
477 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
478 * then initialized and any private data can be allocated. This also calls
479 * startup for the cpu DAI, platform, machine and codec DAI.
481 static int soc_pcm_open(struct snd_pcm_substream *substream)
483 struct snd_soc_pcm_runtime *rtd = substream->private_data;
484 struct snd_pcm_runtime *runtime = substream->runtime;
485 struct snd_soc_platform *platform = rtd->platform;
486 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
487 struct snd_soc_dai *codec_dai = rtd->codec_dai;
488 struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver;
489 struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver;
492 mutex_lock(&pcm_mutex);
494 /* startup the audio subsystem */
495 if (cpu_dai->driver->ops->startup) {
496 ret = cpu_dai->driver->ops->startup(substream, cpu_dai);
498 printk(KERN_ERR "asoc: can't open interface %s\n",
504 if (platform->driver->ops->open) {
505 ret = platform->driver->ops->open(substream);
507 printk(KERN_ERR "asoc: can't open platform %s\n", platform->name);
512 if (codec_dai->driver->ops->startup) {
513 ret = codec_dai->driver->ops->startup(substream, codec_dai);
515 printk(KERN_ERR "asoc: can't open codec %s\n",
521 if (rtd->dai_link->ops && rtd->dai_link->ops->startup) {
522 ret = rtd->dai_link->ops->startup(substream);
524 printk(KERN_ERR "asoc: %s startup failed\n", rtd->dai_link->name);
529 /* Check that the codec and cpu DAIs are compatible */
530 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
531 runtime->hw.rate_min =
532 max(codec_dai_drv->playback.rate_min,
533 cpu_dai_drv->playback.rate_min);
534 runtime->hw.rate_max =
535 min(codec_dai_drv->playback.rate_max,
536 cpu_dai_drv->playback.rate_max);
537 runtime->hw.channels_min =
538 max(codec_dai_drv->playback.channels_min,
539 cpu_dai_drv->playback.channels_min);
540 runtime->hw.channels_max =
541 min(codec_dai_drv->playback.channels_max,
542 cpu_dai_drv->playback.channels_max);
543 runtime->hw.formats =
544 codec_dai_drv->playback.formats & cpu_dai_drv->playback.formats;
546 codec_dai_drv->playback.rates & cpu_dai_drv->playback.rates;
547 if (codec_dai_drv->playback.rates
548 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
549 runtime->hw.rates |= cpu_dai_drv->playback.rates;
550 if (cpu_dai_drv->playback.rates
551 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
552 runtime->hw.rates |= codec_dai_drv->playback.rates;
554 runtime->hw.rate_min =
555 max(codec_dai_drv->capture.rate_min,
556 cpu_dai_drv->capture.rate_min);
557 runtime->hw.rate_max =
558 min(codec_dai_drv->capture.rate_max,
559 cpu_dai_drv->capture.rate_max);
560 runtime->hw.channels_min =
561 max(codec_dai_drv->capture.channels_min,
562 cpu_dai_drv->capture.channels_min);
563 runtime->hw.channels_max =
564 min(codec_dai_drv->capture.channels_max,
565 cpu_dai_drv->capture.channels_max);
566 runtime->hw.formats =
567 codec_dai_drv->capture.formats & cpu_dai_drv->capture.formats;
569 codec_dai_drv->capture.rates & cpu_dai_drv->capture.rates;
570 if (codec_dai_drv->capture.rates
571 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
572 runtime->hw.rates |= cpu_dai_drv->capture.rates;
573 if (cpu_dai_drv->capture.rates
574 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
575 runtime->hw.rates |= codec_dai_drv->capture.rates;
578 snd_pcm_limit_hw_rates(runtime);
579 if (!runtime->hw.rates) {
580 printk(KERN_ERR "asoc: %s <-> %s No matching rates\n",
581 codec_dai->name, cpu_dai->name);
584 if (!runtime->hw.formats) {
585 printk(KERN_ERR "asoc: %s <-> %s No matching formats\n",
586 codec_dai->name, cpu_dai->name);
589 if (!runtime->hw.channels_min || !runtime->hw.channels_max) {
590 printk(KERN_ERR "asoc: %s <-> %s No matching channels\n",
591 codec_dai->name, cpu_dai->name);
595 /* Symmetry only applies if we've already got an active stream. */
596 if (cpu_dai->active || codec_dai->active) {
597 ret = soc_pcm_apply_symmetry(substream);
602 pr_debug("asoc: %s <-> %s info:\n",
603 codec_dai->name, cpu_dai->name);
604 pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates);
605 pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min,
606 runtime->hw.channels_max);
607 pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min,
608 runtime->hw.rate_max);
610 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
611 cpu_dai->playback_active++;
612 codec_dai->playback_active++;
614 cpu_dai->capture_active++;
615 codec_dai->capture_active++;
619 rtd->codec->active++;
620 mutex_unlock(&pcm_mutex);
624 if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
625 rtd->dai_link->ops->shutdown(substream);
628 if (codec_dai->driver->ops->shutdown)
629 codec_dai->driver->ops->shutdown(substream, codec_dai);
632 if (platform->driver->ops->close)
633 platform->driver->ops->close(substream);
636 if (cpu_dai->driver->ops->shutdown)
637 cpu_dai->driver->ops->shutdown(substream, cpu_dai);
639 mutex_unlock(&pcm_mutex);
644 * Power down the audio subsystem pmdown_time msecs after close is called.
645 * This is to ensure there are no pops or clicks in between any music tracks
646 * due to DAPM power cycling.
648 static void close_delayed_work(struct work_struct *work)
650 struct snd_soc_pcm_runtime *rtd =
651 container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
652 struct snd_soc_dai *codec_dai = rtd->codec_dai;
654 mutex_lock(&pcm_mutex);
656 pr_debug("pop wq checking: %s status: %s waiting: %s\n",
657 codec_dai->driver->playback.stream_name,
658 codec_dai->playback_active ? "active" : "inactive",
659 codec_dai->pop_wait ? "yes" : "no");
661 /* are we waiting on this codec DAI stream */
662 if (codec_dai->pop_wait == 1) {
663 codec_dai->pop_wait = 0;
664 snd_soc_dapm_stream_event(rtd,
665 codec_dai->driver->playback.stream_name,
666 SND_SOC_DAPM_STREAM_STOP);
669 mutex_unlock(&pcm_mutex);
673 * Called by ALSA when a PCM substream is closed. Private data can be
674 * freed here. The cpu DAI, codec DAI, machine and platform are also
677 static int soc_codec_close(struct snd_pcm_substream *substream)
679 struct snd_soc_pcm_runtime *rtd = substream->private_data;
680 struct snd_soc_platform *platform = rtd->platform;
681 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
682 struct snd_soc_dai *codec_dai = rtd->codec_dai;
683 struct snd_soc_codec *codec = rtd->codec;
685 mutex_lock(&pcm_mutex);
687 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
688 cpu_dai->playback_active--;
689 codec_dai->playback_active--;
691 cpu_dai->capture_active--;
692 codec_dai->capture_active--;
699 /* Muting the DAC suppresses artifacts caused during digital
700 * shutdown, for example from stopping clocks.
702 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
703 snd_soc_dai_digital_mute(codec_dai, 1);
705 if (cpu_dai->driver->ops->shutdown)
706 cpu_dai->driver->ops->shutdown(substream, cpu_dai);
708 if (codec_dai->driver->ops->shutdown)
709 codec_dai->driver->ops->shutdown(substream, codec_dai);
711 if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
712 rtd->dai_link->ops->shutdown(substream);
714 if (platform->driver->ops->close)
715 platform->driver->ops->close(substream);
716 cpu_dai->runtime = NULL;
718 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
719 /* start delayed pop wq here for playback streams */
720 codec_dai->pop_wait = 1;
721 schedule_delayed_work(&rtd->delayed_work,
722 msecs_to_jiffies(rtd->pmdown_time));
724 /* capture streams can be powered down now */
725 snd_soc_dapm_stream_event(rtd,
726 codec_dai->driver->capture.stream_name,
727 SND_SOC_DAPM_STREAM_STOP);
730 mutex_unlock(&pcm_mutex);
735 * Called by ALSA when the PCM substream is prepared, can set format, sample
736 * rate, etc. This function is non atomic and can be called multiple times,
737 * it can refer to the runtime info.
739 static int soc_pcm_prepare(struct snd_pcm_substream *substream)
741 struct snd_soc_pcm_runtime *rtd = substream->private_data;
742 struct snd_soc_platform *platform = rtd->platform;
743 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
744 struct snd_soc_dai *codec_dai = rtd->codec_dai;
747 mutex_lock(&pcm_mutex);
749 if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) {
750 ret = rtd->dai_link->ops->prepare(substream);
752 printk(KERN_ERR "asoc: machine prepare error\n");
757 if (platform->driver->ops->prepare) {
758 ret = platform->driver->ops->prepare(substream);
760 printk(KERN_ERR "asoc: platform prepare error\n");
765 if (codec_dai->driver->ops->prepare) {
766 ret = codec_dai->driver->ops->prepare(substream, codec_dai);
768 printk(KERN_ERR "asoc: codec DAI prepare error\n");
773 if (cpu_dai->driver->ops->prepare) {
774 ret = cpu_dai->driver->ops->prepare(substream, cpu_dai);
776 printk(KERN_ERR "asoc: cpu DAI prepare error\n");
781 /* cancel any delayed stream shutdown that is pending */
782 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
783 codec_dai->pop_wait) {
784 codec_dai->pop_wait = 0;
785 cancel_delayed_work(&rtd->delayed_work);
788 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
789 snd_soc_dapm_stream_event(rtd,
790 codec_dai->driver->playback.stream_name,
791 SND_SOC_DAPM_STREAM_START);
793 snd_soc_dapm_stream_event(rtd,
794 codec_dai->driver->capture.stream_name,
795 SND_SOC_DAPM_STREAM_START);
797 snd_soc_dai_digital_mute(codec_dai, 0);
800 mutex_unlock(&pcm_mutex);
805 * Called by ALSA when the hardware params are set by application. This
806 * function can also be called multiple times and can allocate buffers
807 * (using snd_pcm_lib_* ). It's non-atomic.
809 static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
810 struct snd_pcm_hw_params *params)
812 struct snd_soc_pcm_runtime *rtd = substream->private_data;
813 struct snd_soc_platform *platform = rtd->platform;
814 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
815 struct snd_soc_dai *codec_dai = rtd->codec_dai;
818 mutex_lock(&pcm_mutex);
820 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) {
821 ret = rtd->dai_link->ops->hw_params(substream, params);
823 printk(KERN_ERR "asoc: machine hw_params failed\n");
828 if (codec_dai->driver->ops->hw_params) {
829 ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai);
831 printk(KERN_ERR "asoc: can't set codec %s hw params\n",
837 if (cpu_dai->driver->ops->hw_params) {
838 ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai);
840 printk(KERN_ERR "asoc: interface %s hw params failed\n",
846 if (platform->driver->ops->hw_params) {
847 ret = platform->driver->ops->hw_params(substream, params);
849 printk(KERN_ERR "asoc: platform %s hw params failed\n",
855 rtd->rate = params_rate(params);
858 mutex_unlock(&pcm_mutex);
862 if (cpu_dai->driver->ops->hw_free)
863 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
866 if (codec_dai->driver->ops->hw_free)
867 codec_dai->driver->ops->hw_free(substream, codec_dai);
870 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
871 rtd->dai_link->ops->hw_free(substream);
873 mutex_unlock(&pcm_mutex);
878 * Frees resources allocated by hw_params, can be called multiple times
880 static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
882 struct snd_soc_pcm_runtime *rtd = substream->private_data;
883 struct snd_soc_platform *platform = rtd->platform;
884 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
885 struct snd_soc_dai *codec_dai = rtd->codec_dai;
886 struct snd_soc_codec *codec = rtd->codec;
888 mutex_lock(&pcm_mutex);
890 /* apply codec digital mute */
892 snd_soc_dai_digital_mute(codec_dai, 1);
894 /* free any machine hw params */
895 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
896 rtd->dai_link->ops->hw_free(substream);
898 /* free any DMA resources */
899 if (platform->driver->ops->hw_free)
900 platform->driver->ops->hw_free(substream);
902 /* now free hw params for the DAIs */
903 if (codec_dai->driver->ops->hw_free)
904 codec_dai->driver->ops->hw_free(substream, codec_dai);
906 if (cpu_dai->driver->ops->hw_free)
907 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
909 mutex_unlock(&pcm_mutex);
913 static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
915 struct snd_soc_pcm_runtime *rtd = substream->private_data;
916 struct snd_soc_platform *platform = rtd->platform;
917 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
918 struct snd_soc_dai *codec_dai = rtd->codec_dai;
921 if (codec_dai->driver->ops->trigger) {
922 ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai);
927 if (platform->driver->ops->trigger) {
928 ret = platform->driver->ops->trigger(substream, cmd);
933 if (cpu_dai->driver->ops->trigger) {
934 ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai);
942 * soc level wrapper for pointer callback
943 * If cpu_dai, codec_dai, platform driver has the delay callback, than
944 * the runtime->delay will be updated accordingly.
946 static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
948 struct snd_soc_pcm_runtime *rtd = substream->private_data;
949 struct snd_soc_platform *platform = rtd->platform;
950 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
951 struct snd_soc_dai *codec_dai = rtd->codec_dai;
952 struct snd_pcm_runtime *runtime = substream->runtime;
953 snd_pcm_uframes_t offset = 0;
954 snd_pcm_sframes_t delay = 0;
956 if (platform->driver->ops->pointer)
957 offset = platform->driver->ops->pointer(substream);
959 if (cpu_dai->driver->ops->delay)
960 delay += cpu_dai->driver->ops->delay(substream, cpu_dai);
962 if (codec_dai->driver->ops->delay)
963 delay += codec_dai->driver->ops->delay(substream, codec_dai);
965 if (platform->driver->delay)
966 delay += platform->driver->delay(substream, codec_dai);
968 runtime->delay = delay;
973 /* ASoC PCM operations */
974 static struct snd_pcm_ops soc_pcm_ops = {
975 .open = soc_pcm_open,
976 .close = soc_codec_close,
977 .hw_params = soc_pcm_hw_params,
978 .hw_free = soc_pcm_hw_free,
979 .prepare = soc_pcm_prepare,
980 .trigger = soc_pcm_trigger,
981 .pointer = soc_pcm_pointer,
985 /* powers down audio subsystem for suspend */
986 static int soc_suspend(struct device *dev)
988 struct platform_device *pdev = to_platform_device(dev);
989 struct snd_soc_card *card = platform_get_drvdata(pdev);
990 struct snd_soc_codec *codec;
993 /* If the initialization of this soc device failed, there is no codec
994 * associated with it. Just bail out in this case.
996 if (list_empty(&card->codec_dev_list))
999 /* Due to the resume being scheduled into a workqueue we could
1000 * suspend before that's finished - wait for it to complete.
1002 snd_power_lock(card->snd_card);
1003 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
1004 snd_power_unlock(card->snd_card);
1006 /* we're going to block userspace touching us until resume completes */
1007 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
1009 /* mute any active DACs */
1010 for (i = 0; i < card->num_rtd; i++) {
1011 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
1012 struct snd_soc_dai_driver *drv = dai->driver;
1014 if (card->rtd[i].dai_link->ignore_suspend)
1017 if (drv->ops->digital_mute && dai->playback_active)
1018 drv->ops->digital_mute(dai, 1);
1021 /* suspend all pcms */
1022 for (i = 0; i < card->num_rtd; i++) {
1023 if (card->rtd[i].dai_link->ignore_suspend)
1026 snd_pcm_suspend_all(card->rtd[i].pcm);
1029 if (card->suspend_pre)
1030 card->suspend_pre(pdev, PMSG_SUSPEND);
1032 for (i = 0; i < card->num_rtd; i++) {
1033 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1034 struct snd_soc_platform *platform = card->rtd[i].platform;
1036 if (card->rtd[i].dai_link->ignore_suspend)
1039 if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
1040 cpu_dai->driver->suspend(cpu_dai);
1041 if (platform->driver->suspend && !platform->suspended) {
1042 platform->driver->suspend(cpu_dai);
1043 platform->suspended = 1;
1047 /* close any waiting streams and save state */
1048 for (i = 0; i < card->num_rtd; i++) {
1049 run_delayed_work(&card->rtd[i].delayed_work);
1050 card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
1053 for (i = 0; i < card->num_rtd; i++) {
1054 struct snd_soc_dai_driver *driver = card->rtd[i].codec_dai->driver;
1056 if (card->rtd[i].dai_link->ignore_suspend)
1059 if (driver->playback.stream_name != NULL)
1060 snd_soc_dapm_stream_event(&card->rtd[i], driver->playback.stream_name,
1061 SND_SOC_DAPM_STREAM_SUSPEND);
1063 if (driver->capture.stream_name != NULL)
1064 snd_soc_dapm_stream_event(&card->rtd[i], driver->capture.stream_name,
1065 SND_SOC_DAPM_STREAM_SUSPEND);
1068 /* suspend all CODECs */
1069 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
1070 /* If there are paths active then the CODEC will be held with
1071 * bias _ON and should not be suspended. */
1072 if (!codec->suspended && codec->driver->suspend) {
1073 switch (codec->dapm.bias_level) {
1074 case SND_SOC_BIAS_STANDBY:
1075 case SND_SOC_BIAS_OFF:
1076 codec->driver->suspend(codec, PMSG_SUSPEND);
1077 codec->suspended = 1;
1080 dev_dbg(codec->dev, "CODEC is on over suspend\n");
1086 for (i = 0; i < card->num_rtd; i++) {
1087 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1089 if (card->rtd[i].dai_link->ignore_suspend)
1092 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
1093 cpu_dai->driver->suspend(cpu_dai);
1096 if (card->suspend_post)
1097 card->suspend_post(pdev, PMSG_SUSPEND);
1102 /* deferred resume work, so resume can complete before we finished
1103 * setting our codec back up, which can be very slow on I2C
1105 static void soc_resume_deferred(struct work_struct *work)
1107 struct snd_soc_card *card =
1108 container_of(work, struct snd_soc_card, deferred_resume_work);
1109 struct platform_device *pdev = to_platform_device(card->dev);
1110 struct snd_soc_codec *codec;
1113 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
1114 * so userspace apps are blocked from touching us
1117 dev_dbg(card->dev, "starting resume work\n");
1119 /* Bring us up into D2 so that DAPM starts enabling things */
1120 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
1122 if (card->resume_pre)
1123 card->resume_pre(pdev);
1125 /* resume AC97 DAIs */
1126 for (i = 0; i < card->num_rtd; i++) {
1127 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1129 if (card->rtd[i].dai_link->ignore_suspend)
1132 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
1133 cpu_dai->driver->resume(cpu_dai);
1136 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
1137 /* If the CODEC was idle over suspend then it will have been
1138 * left with bias OFF or STANDBY and suspended so we must now
1139 * resume. Otherwise the suspend was suppressed.
1141 if (codec->driver->resume && codec->suspended) {
1142 switch (codec->dapm.bias_level) {
1143 case SND_SOC_BIAS_STANDBY:
1144 case SND_SOC_BIAS_OFF:
1145 codec->driver->resume(codec);
1146 codec->suspended = 0;
1149 dev_dbg(codec->dev, "CODEC was on over suspend\n");
1155 for (i = 0; i < card->num_rtd; i++) {
1156 struct snd_soc_dai_driver *driver = card->rtd[i].codec_dai->driver;
1158 if (card->rtd[i].dai_link->ignore_suspend)
1161 if (driver->playback.stream_name != NULL)
1162 snd_soc_dapm_stream_event(&card->rtd[i], driver->playback.stream_name,
1163 SND_SOC_DAPM_STREAM_RESUME);
1165 if (driver->capture.stream_name != NULL)
1166 snd_soc_dapm_stream_event(&card->rtd[i], driver->capture.stream_name,
1167 SND_SOC_DAPM_STREAM_RESUME);
1170 /* unmute any active DACs */
1171 for (i = 0; i < card->num_rtd; i++) {
1172 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
1173 struct snd_soc_dai_driver *drv = dai->driver;
1175 if (card->rtd[i].dai_link->ignore_suspend)
1178 if (drv->ops->digital_mute && dai->playback_active)
1179 drv->ops->digital_mute(dai, 0);
1182 for (i = 0; i < card->num_rtd; i++) {
1183 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1184 struct snd_soc_platform *platform = card->rtd[i].platform;
1186 if (card->rtd[i].dai_link->ignore_suspend)
1189 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
1190 cpu_dai->driver->resume(cpu_dai);
1191 if (platform->driver->resume && platform->suspended) {
1192 platform->driver->resume(cpu_dai);
1193 platform->suspended = 0;
1197 if (card->resume_post)
1198 card->resume_post(pdev);
1200 dev_dbg(card->dev, "resume work completed\n");
1202 /* userspace can access us now we are back as we were before */
1203 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
1206 /* powers up audio subsystem after a suspend */
1207 static int soc_resume(struct device *dev)
1209 struct platform_device *pdev = to_platform_device(dev);
1210 struct snd_soc_card *card = platform_get_drvdata(pdev);
1213 /* AC97 devices might have other drivers hanging off them so
1214 * need to resume immediately. Other drivers don't have that
1215 * problem and may take a substantial amount of time to resume
1216 * due to I/O costs and anti-pop so handle them out of line.
1218 for (i = 0; i < card->num_rtd; i++) {
1219 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1220 if (cpu_dai->driver->ac97_control) {
1221 dev_dbg(dev, "Resuming AC97 immediately\n");
1222 soc_resume_deferred(&card->deferred_resume_work);
1224 dev_dbg(dev, "Scheduling resume work\n");
1225 if (!schedule_work(&card->deferred_resume_work))
1226 dev_err(dev, "resume work item may be lost\n");
1233 #define soc_suspend NULL
1234 #define soc_resume NULL
1237 static struct snd_soc_dai_ops null_dai_ops = {
1240 static int soc_bind_dai_link(struct snd_soc_card *card, int num)
1242 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1243 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1244 struct snd_soc_codec *codec;
1245 struct snd_soc_platform *platform;
1246 struct snd_soc_dai *codec_dai, *cpu_dai;
1250 dev_dbg(card->dev, "binding %s at idx %d\n", dai_link->name, num);
1252 /* do we already have the CPU DAI for this link ? */
1256 /* no, then find CPU DAI from registered DAIs*/
1257 list_for_each_entry(cpu_dai, &dai_list, list) {
1258 if (!strcmp(cpu_dai->name, dai_link->cpu_dai_name)) {
1260 if (!try_module_get(cpu_dai->dev->driver->owner))
1263 rtd->cpu_dai = cpu_dai;
1267 dev_dbg(card->dev, "CPU DAI %s not registered\n",
1268 dai_link->cpu_dai_name);
1271 /* do we already have the CODEC for this link ? */
1276 /* no, then find CODEC from registered CODECs*/
1277 list_for_each_entry(codec, &codec_list, list) {
1278 if (!strcmp(codec->name, dai_link->codec_name)) {
1281 if (!try_module_get(codec->dev->driver->owner))
1284 /* CODEC found, so find CODEC DAI from registered DAIs from this CODEC*/
1285 list_for_each_entry(codec_dai, &dai_list, list) {
1286 if (codec->dev == codec_dai->dev &&
1287 !strcmp(codec_dai->name, dai_link->codec_dai_name)) {
1288 rtd->codec_dai = codec_dai;
1292 dev_dbg(card->dev, "CODEC DAI %s not registered\n",
1293 dai_link->codec_dai_name);
1298 dev_dbg(card->dev, "CODEC %s not registered\n",
1299 dai_link->codec_name);
1302 /* do we already have the CODEC DAI for this link ? */
1303 if (rtd->platform) {
1306 /* no, then find CPU DAI from registered DAIs*/
1307 list_for_each_entry(platform, &platform_list, list) {
1308 if (!strcmp(platform->name, dai_link->platform_name)) {
1310 if (!try_module_get(platform->dev->driver->owner))
1313 rtd->platform = platform;
1318 dev_dbg(card->dev, "platform %s not registered\n",
1319 dai_link->platform_name);
1323 /* mark rtd as complete if we found all 4 of our client devices */
1324 if (rtd->codec && rtd->codec_dai && rtd->platform && rtd->cpu_dai) {
1331 static void soc_remove_codec(struct snd_soc_codec *codec)
1335 if (codec->driver->remove) {
1336 err = codec->driver->remove(codec);
1339 "asoc: failed to remove %s: %d\n",
1343 /* Make sure all DAPM widgets are freed */
1344 snd_soc_dapm_free(&codec->dapm);
1346 soc_cleanup_codec_debugfs(codec);
1348 list_del(&codec->card_list);
1349 module_put(codec->dev->driver->owner);
1352 static void soc_remove_dai_link(struct snd_soc_card *card, int num)
1354 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1355 struct snd_soc_codec *codec = rtd->codec;
1356 struct snd_soc_platform *platform = rtd->platform;
1357 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
1360 /* unregister the rtd device */
1361 if (rtd->dev_registered) {
1362 device_remove_file(&rtd->dev, &dev_attr_pmdown_time);
1363 device_remove_file(&rtd->dev, &dev_attr_codec_reg);
1364 device_unregister(&rtd->dev);
1365 rtd->dev_registered = 0;
1368 /* remove the CODEC DAI */
1369 if (codec_dai && codec_dai->probed) {
1370 if (codec_dai->driver->remove) {
1371 err = codec_dai->driver->remove(codec_dai);
1373 printk(KERN_ERR "asoc: failed to remove %s\n", codec_dai->name);
1375 codec_dai->probed = 0;
1376 list_del(&codec_dai->card_list);
1379 /* remove the platform */
1380 if (platform && platform->probed) {
1381 if (platform->driver->remove) {
1382 err = platform->driver->remove(platform);
1384 printk(KERN_ERR "asoc: failed to remove %s\n", platform->name);
1386 platform->probed = 0;
1387 list_del(&platform->card_list);
1388 module_put(platform->dev->driver->owner);
1391 /* remove the CODEC */
1392 if (codec && codec->probed)
1393 soc_remove_codec(codec);
1395 /* remove the cpu_dai */
1396 if (cpu_dai && cpu_dai->probed) {
1397 if (cpu_dai->driver->remove) {
1398 err = cpu_dai->driver->remove(cpu_dai);
1400 printk(KERN_ERR "asoc: failed to remove %s\n", cpu_dai->name);
1402 cpu_dai->probed = 0;
1403 list_del(&cpu_dai->card_list);
1404 module_put(cpu_dai->dev->driver->owner);
1408 static void soc_set_name_prefix(struct snd_soc_card *card,
1409 struct snd_soc_codec *codec)
1413 if (card->codec_conf == NULL)
1416 for (i = 0; i < card->num_configs; i++) {
1417 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1418 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
1419 codec->name_prefix = map->name_prefix;
1425 static int soc_probe_codec(struct snd_soc_card *card,
1426 struct snd_soc_codec *codec)
1431 codec->dapm.card = card;
1432 soc_set_name_prefix(card, codec);
1434 if (codec->driver->probe) {
1435 ret = codec->driver->probe(codec);
1438 "asoc: failed to probe CODEC %s: %d\n",
1444 soc_init_codec_debugfs(codec);
1446 /* mark codec as probed and add to card codec list */
1448 list_add(&codec->card_list, &card->codec_dev_list);
1453 static void rtd_release(struct device *dev) {}
1455 static int soc_post_component_init(struct snd_soc_card *card,
1456 struct snd_soc_codec *codec,
1457 int num, int dailess)
1459 struct snd_soc_dai_link *dai_link = NULL;
1460 struct snd_soc_aux_dev *aux_dev = NULL;
1461 struct snd_soc_pcm_runtime *rtd;
1462 const char *temp, *name;
1466 dai_link = &card->dai_link[num];
1467 rtd = &card->rtd[num];
1468 name = dai_link->name;
1470 aux_dev = &card->aux_dev[num];
1471 rtd = &card->rtd_aux[num];
1472 name = aux_dev->name;
1475 /* machine controls, routes and widgets are not prefixed */
1476 temp = codec->name_prefix;
1477 codec->name_prefix = NULL;
1479 /* do machine specific initialization */
1480 if (!dailess && dai_link->init)
1481 ret = dai_link->init(rtd);
1482 else if (dailess && aux_dev->init)
1483 ret = aux_dev->init(&codec->dapm);
1485 dev_err(card->dev, "asoc: failed to init %s: %d\n", name, ret);
1488 codec->name_prefix = temp;
1490 /* Make sure all DAPM widgets are instantiated */
1491 snd_soc_dapm_new_widgets(&codec->dapm);
1492 snd_soc_dapm_sync(&codec->dapm);
1494 /* register the rtd device */
1497 rtd->dev.parent = card->dev;
1498 rtd->dev.release = rtd_release;
1499 rtd->dev.init_name = name;
1500 ret = device_register(&rtd->dev);
1503 "asoc: failed to register runtime device: %d\n", ret);
1506 rtd->dev_registered = 1;
1508 /* add DAPM sysfs entries for this codec */
1509 ret = snd_soc_dapm_sys_add(&rtd->dev);
1512 "asoc: failed to add codec dapm sysfs entries: %d\n",
1515 /* add codec sysfs entries */
1516 ret = device_create_file(&rtd->dev, &dev_attr_codec_reg);
1519 "asoc: failed to add codec sysfs files: %d\n", ret);
1524 static int soc_probe_dai_link(struct snd_soc_card *card, int num)
1526 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1527 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1528 struct snd_soc_codec *codec = rtd->codec;
1529 struct snd_soc_platform *platform = rtd->platform;
1530 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
1533 dev_dbg(card->dev, "probe %s dai link %d\n", card->name, num);
1535 /* config components */
1536 codec_dai->codec = codec;
1537 cpu_dai->platform = platform;
1538 codec_dai->card = card;
1539 cpu_dai->card = card;
1541 /* set default power off timeout */
1542 rtd->pmdown_time = pmdown_time;
1544 /* probe the cpu_dai */
1545 if (!cpu_dai->probed) {
1546 if (cpu_dai->driver->probe) {
1547 ret = cpu_dai->driver->probe(cpu_dai);
1549 printk(KERN_ERR "asoc: failed to probe CPU DAI %s\n",
1554 cpu_dai->probed = 1;
1555 /* mark cpu_dai as probed and add to card cpu_dai list */
1556 list_add(&cpu_dai->card_list, &card->dai_dev_list);
1559 /* probe the CODEC */
1560 if (!codec->probed) {
1561 ret = soc_probe_codec(card, codec);
1566 /* probe the platform */
1567 if (!platform->probed) {
1568 if (platform->driver->probe) {
1569 ret = platform->driver->probe(platform);
1571 printk(KERN_ERR "asoc: failed to probe platform %s\n",
1576 /* mark platform as probed and add to card platform list */
1577 platform->probed = 1;
1578 list_add(&platform->card_list, &card->platform_dev_list);
1581 /* probe the CODEC DAI */
1582 if (!codec_dai->probed) {
1583 if (codec_dai->driver->probe) {
1584 ret = codec_dai->driver->probe(codec_dai);
1586 printk(KERN_ERR "asoc: failed to probe CODEC DAI %s\n",
1592 /* mark cpu_dai as probed and add to card cpu_dai list */
1593 codec_dai->probed = 1;
1594 list_add(&codec_dai->card_list, &card->dai_dev_list);
1597 /* DAPM dai link stream work */
1598 INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
1600 ret = soc_post_component_init(card, codec, num, 0);
1604 ret = device_create_file(&rtd->dev, &dev_attr_pmdown_time);
1606 printk(KERN_WARNING "asoc: failed to add pmdown_time sysfs\n");
1608 /* create the pcm */
1609 ret = soc_new_pcm(rtd, num);
1611 printk(KERN_ERR "asoc: can't create pcm %s\n", dai_link->stream_name);
1615 /* add platform data for AC97 devices */
1616 if (rtd->codec_dai->driver->ac97_control)
1617 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1622 #ifdef CONFIG_SND_SOC_AC97_BUS
1623 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1627 /* Only instantiate AC97 if not already done by the adaptor
1628 * for the generic AC97 subsystem.
1630 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
1632 * It is possible that the AC97 device is already registered to
1633 * the device subsystem. This happens when the device is created
1634 * via snd_ac97_mixer(). Currently only SoC codec that does so
1635 * is the generic AC97 glue but others migh emerge.
1637 * In those cases we don't try to register the device again.
1639 if (!rtd->codec->ac97_created)
1642 ret = soc_ac97_dev_register(rtd->codec);
1644 printk(KERN_ERR "asoc: AC97 device register failed\n");
1648 rtd->codec->ac97_registered = 1;
1653 static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1655 if (codec->ac97_registered) {
1656 soc_ac97_dev_unregister(codec);
1657 codec->ac97_registered = 0;
1662 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1664 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1665 struct snd_soc_codec *codec;
1668 /* find CODEC from registered CODECs*/
1669 list_for_each_entry(codec, &codec_list, list) {
1670 if (!strcmp(codec->name, aux_dev->codec_name)) {
1671 if (codec->probed) {
1673 "asoc: codec already probed");
1680 /* codec not found */
1681 dev_err(card->dev, "asoc: codec %s not found", aux_dev->codec_name);
1685 if (!try_module_get(codec->dev->driver->owner))
1688 ret = soc_probe_codec(card, codec);
1692 ret = soc_post_component_init(card, codec, num, 1);
1698 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1700 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1701 struct snd_soc_codec *codec = rtd->codec;
1703 /* unregister the rtd device */
1704 if (rtd->dev_registered) {
1705 device_remove_file(&rtd->dev, &dev_attr_codec_reg);
1706 device_unregister(&rtd->dev);
1707 rtd->dev_registered = 0;
1710 if (codec && codec->probed)
1711 soc_remove_codec(codec);
1714 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
1715 enum snd_soc_compress_type compress_type)
1719 if (codec->cache_init)
1722 /* override the compress_type if necessary */
1723 if (compress_type && codec->compress_type != compress_type)
1724 codec->compress_type = compress_type;
1725 ret = snd_soc_cache_init(codec);
1727 dev_err(codec->dev, "Failed to set cache compression type: %d\n",
1731 codec->cache_init = 1;
1735 static void snd_soc_instantiate_card(struct snd_soc_card *card)
1737 struct platform_device *pdev = to_platform_device(card->dev);
1738 struct snd_soc_codec *codec;
1739 struct snd_soc_codec_conf *codec_conf;
1740 enum snd_soc_compress_type compress_type;
1743 mutex_lock(&card->mutex);
1745 if (card->instantiated) {
1746 mutex_unlock(&card->mutex);
1751 for (i = 0; i < card->num_links; i++)
1752 soc_bind_dai_link(card, i);
1754 /* bind completed ? */
1755 if (card->num_rtd != card->num_links) {
1756 mutex_unlock(&card->mutex);
1760 /* initialize the register cache for each available codec */
1761 list_for_each_entry(codec, &codec_list, list) {
1762 if (codec->cache_init)
1764 /* check to see if we need to override the compress_type */
1765 for (i = 0; i < card->num_configs; ++i) {
1766 codec_conf = &card->codec_conf[i];
1767 if (!strcmp(codec->name, codec_conf->dev_name)) {
1768 compress_type = codec_conf->compress_type;
1769 if (compress_type && compress_type
1770 != codec->compress_type)
1774 if (i == card->num_configs) {
1775 /* no need to override the compress_type so
1776 * go ahead and do the standard thing */
1777 ret = snd_soc_init_codec_cache(codec, 0);
1779 mutex_unlock(&card->mutex);
1784 /* override the compress_type with the one supplied in
1785 * the machine driver */
1786 ret = snd_soc_init_codec_cache(codec, compress_type);
1788 mutex_unlock(&card->mutex);
1793 /* card bind complete so register a sound card */
1794 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1795 card->owner, 0, &card->snd_card);
1797 printk(KERN_ERR "asoc: can't create sound card for card %s\n",
1799 mutex_unlock(&card->mutex);
1802 card->snd_card->dev = card->dev;
1805 /* deferred resume work */
1806 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1809 /* initialise the sound card only once */
1811 ret = card->probe(pdev);
1813 goto card_probe_error;
1816 for (i = 0; i < card->num_links; i++) {
1817 ret = soc_probe_dai_link(card, i);
1819 pr_err("asoc: failed to instantiate card %s: %d\n",
1825 for (i = 0; i < card->num_aux_devs; i++) {
1826 ret = soc_probe_aux_dev(card, i);
1828 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1830 goto probe_aux_dev_err;
1834 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1836 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1839 ret = snd_card_register(card->snd_card);
1841 printk(KERN_ERR "asoc: failed to register soundcard for %s\n", card->name);
1842 goto probe_aux_dev_err;
1845 #ifdef CONFIG_SND_SOC_AC97_BUS
1846 /* register any AC97 codecs */
1847 for (i = 0; i < card->num_rtd; i++) {
1848 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1850 printk(KERN_ERR "asoc: failed to register AC97 %s\n", card->name);
1852 soc_unregister_ac97_dai_link(&card->rtd[i]);
1853 goto probe_aux_dev_err;
1858 card->instantiated = 1;
1859 mutex_unlock(&card->mutex);
1863 for (i = 0; i < card->num_aux_devs; i++)
1864 soc_remove_aux_dev(card, i);
1867 for (i = 0; i < card->num_links; i++)
1868 soc_remove_dai_link(card, i);
1874 snd_card_free(card->snd_card);
1876 mutex_unlock(&card->mutex);
1880 * Attempt to initialise any uninitialised cards. Must be called with
1883 static void snd_soc_instantiate_cards(void)
1885 struct snd_soc_card *card;
1886 list_for_each_entry(card, &card_list, list)
1887 snd_soc_instantiate_card(card);
1890 /* probes a new socdev */
1891 static int soc_probe(struct platform_device *pdev)
1893 struct snd_soc_card *card = platform_get_drvdata(pdev);
1896 /* Bodge while we unpick instantiation */
1897 card->dev = &pdev->dev;
1898 INIT_LIST_HEAD(&card->dai_dev_list);
1899 INIT_LIST_HEAD(&card->codec_dev_list);
1900 INIT_LIST_HEAD(&card->platform_dev_list);
1902 soc_init_card_debugfs(card);
1904 ret = snd_soc_register_card(card);
1906 dev_err(&pdev->dev, "Failed to register card\n");
1913 /* removes a socdev */
1914 static int soc_remove(struct platform_device *pdev)
1916 struct snd_soc_card *card = platform_get_drvdata(pdev);
1919 if (card->instantiated) {
1921 /* make sure any delayed work runs */
1922 for (i = 0; i < card->num_rtd; i++) {
1923 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1924 run_delayed_work(&rtd->delayed_work);
1927 /* remove auxiliary devices */
1928 for (i = 0; i < card->num_aux_devs; i++)
1929 soc_remove_aux_dev(card, i);
1931 /* remove and free each DAI */
1932 for (i = 0; i < card->num_rtd; i++)
1933 soc_remove_dai_link(card, i);
1935 soc_cleanup_card_debugfs(card);
1937 /* remove the card */
1942 snd_card_free(card->snd_card);
1944 snd_soc_unregister_card(card);
1948 static int soc_poweroff(struct device *dev)
1950 struct platform_device *pdev = to_platform_device(dev);
1951 struct snd_soc_card *card = platform_get_drvdata(pdev);
1954 if (!card->instantiated)
1957 /* Flush out pmdown_time work - we actually do want to run it
1958 * now, we're shutting down so no imminent restart. */
1959 for (i = 0; i < card->num_rtd; i++) {
1960 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1961 run_delayed_work(&rtd->delayed_work);
1964 snd_soc_dapm_shutdown(card);
1969 static const struct dev_pm_ops soc_pm_ops = {
1970 .suspend = soc_suspend,
1971 .resume = soc_resume,
1972 .poweroff = soc_poweroff,
1975 /* ASoC platform driver */
1976 static struct platform_driver soc_driver = {
1978 .name = "soc-audio",
1979 .owner = THIS_MODULE,
1983 .remove = soc_remove,
1986 /* create a new pcm */
1987 static int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
1989 struct snd_soc_codec *codec = rtd->codec;
1990 struct snd_soc_platform *platform = rtd->platform;
1991 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1992 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1993 struct snd_pcm *pcm;
1995 int ret = 0, playback = 0, capture = 0;
1997 /* check client and interface hw capabilities */
1998 snprintf(new_name, sizeof(new_name), "%s %s-%d",
1999 rtd->dai_link->stream_name, codec_dai->name, num);
2001 if (codec_dai->driver->playback.channels_min)
2003 if (codec_dai->driver->capture.channels_min)
2006 dev_dbg(rtd->card->dev, "registered pcm #%d %s\n",num,new_name);
2007 ret = snd_pcm_new(rtd->card->snd_card, new_name,
2008 num, playback, capture, &pcm);
2010 printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name);
2015 pcm->private_data = rtd;
2016 soc_pcm_ops.mmap = platform->driver->ops->mmap;
2017 soc_pcm_ops.pointer = platform->driver->ops->pointer;
2018 soc_pcm_ops.ioctl = platform->driver->ops->ioctl;
2019 soc_pcm_ops.copy = platform->driver->ops->copy;
2020 soc_pcm_ops.silence = platform->driver->ops->silence;
2021 soc_pcm_ops.ack = platform->driver->ops->ack;
2022 soc_pcm_ops.page = platform->driver->ops->page;
2025 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops);
2028 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops);
2030 ret = platform->driver->pcm_new(rtd->card->snd_card, codec_dai, pcm);
2032 printk(KERN_ERR "asoc: platform pcm constructor failed\n");
2036 pcm->private_free = platform->driver->pcm_free;
2037 printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name,
2043 * snd_soc_codec_volatile_register: Report if a register is volatile.
2045 * @codec: CODEC to query.
2046 * @reg: Register to query.
2048 * Boolean function indiciating if a CODEC register is volatile.
2050 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, int reg)
2052 if (codec->driver->volatile_register)
2053 return codec->driver->volatile_register(reg);
2057 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
2060 * snd_soc_new_ac97_codec - initailise AC97 device
2061 * @codec: audio codec
2062 * @ops: AC97 bus operations
2063 * @num: AC97 codec number
2065 * Initialises AC97 codec resources for use by ad-hoc devices only.
2067 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
2068 struct snd_ac97_bus_ops *ops, int num)
2070 mutex_lock(&codec->mutex);
2072 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2073 if (codec->ac97 == NULL) {
2074 mutex_unlock(&codec->mutex);
2078 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
2079 if (codec->ac97->bus == NULL) {
2082 mutex_unlock(&codec->mutex);
2086 codec->ac97->bus->ops = ops;
2087 codec->ac97->num = num;
2090 * Mark the AC97 device to be created by us. This way we ensure that the
2091 * device will be registered with the device subsystem later on.
2093 codec->ac97_created = 1;
2095 mutex_unlock(&codec->mutex);
2098 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
2101 * snd_soc_free_ac97_codec - free AC97 codec device
2102 * @codec: audio codec
2104 * Frees AC97 codec device resources.
2106 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
2108 mutex_lock(&codec->mutex);
2109 #ifdef CONFIG_SND_SOC_AC97_BUS
2110 soc_unregister_ac97_dai_link(codec);
2112 kfree(codec->ac97->bus);
2115 codec->ac97_created = 0;
2116 mutex_unlock(&codec->mutex);
2118 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
2120 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
2124 ret = codec->read(codec, reg);
2125 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
2126 trace_snd_soc_reg_read(codec, reg, ret);
2130 EXPORT_SYMBOL_GPL(snd_soc_read);
2132 unsigned int snd_soc_write(struct snd_soc_codec *codec,
2133 unsigned int reg, unsigned int val)
2135 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
2136 trace_snd_soc_reg_write(codec, reg, val);
2137 return codec->write(codec, reg, val);
2139 EXPORT_SYMBOL_GPL(snd_soc_write);
2142 * snd_soc_update_bits - update codec register bits
2143 * @codec: audio codec
2144 * @reg: codec register
2145 * @mask: register mask
2148 * Writes new register value.
2150 * Returns 1 for change else 0.
2152 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
2153 unsigned int mask, unsigned int value)
2156 unsigned int old, new;
2158 old = snd_soc_read(codec, reg);
2159 new = (old & ~mask) | value;
2160 change = old != new;
2162 snd_soc_write(codec, reg, new);
2166 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
2169 * snd_soc_update_bits_locked - update codec register bits
2170 * @codec: audio codec
2171 * @reg: codec register
2172 * @mask: register mask
2175 * Writes new register value, and takes the codec mutex.
2177 * Returns 1 for change else 0.
2179 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
2180 unsigned short reg, unsigned int mask,
2185 mutex_lock(&codec->mutex);
2186 change = snd_soc_update_bits(codec, reg, mask, value);
2187 mutex_unlock(&codec->mutex);
2191 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
2194 * snd_soc_test_bits - test register for change
2195 * @codec: audio codec
2196 * @reg: codec register
2197 * @mask: register mask
2200 * Tests a register with a new value and checks if the new value is
2201 * different from the old value.
2203 * Returns 1 for change else 0.
2205 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
2206 unsigned int mask, unsigned int value)
2209 unsigned int old, new;
2211 old = snd_soc_read(codec, reg);
2212 new = (old & ~mask) | value;
2213 change = old != new;
2217 EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2220 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2221 * @substream: the pcm substream
2222 * @hw: the hardware parameters
2224 * Sets the substream runtime hardware parameters.
2226 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
2227 const struct snd_pcm_hardware *hw)
2229 struct snd_pcm_runtime *runtime = substream->runtime;
2230 runtime->hw.info = hw->info;
2231 runtime->hw.formats = hw->formats;
2232 runtime->hw.period_bytes_min = hw->period_bytes_min;
2233 runtime->hw.period_bytes_max = hw->period_bytes_max;
2234 runtime->hw.periods_min = hw->periods_min;
2235 runtime->hw.periods_max = hw->periods_max;
2236 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
2237 runtime->hw.fifo_size = hw->fifo_size;
2240 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
2243 * snd_soc_cnew - create new control
2244 * @_template: control template
2245 * @data: control private data
2246 * @long_name: control long name
2248 * Create a new mixer control from a template control.
2250 * Returns 0 for success, else error.
2252 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2253 void *data, char *long_name)
2255 struct snd_kcontrol_new template;
2257 memcpy(&template, _template, sizeof(template));
2259 template.name = long_name;
2262 return snd_ctl_new1(&template, data);
2264 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2267 * snd_soc_add_controls - add an array of controls to a codec.
2268 * Convienience function to add a list of controls. Many codecs were
2269 * duplicating this code.
2271 * @codec: codec to add controls to
2272 * @controls: array of controls to add
2273 * @num_controls: number of elements in the array
2275 * Return 0 for success, else error.
2277 int snd_soc_add_controls(struct snd_soc_codec *codec,
2278 const struct snd_kcontrol_new *controls, int num_controls)
2280 struct snd_card *card = codec->card->snd_card;
2281 char prefixed_name[44], *name;
2284 for (i = 0; i < num_controls; i++) {
2285 const struct snd_kcontrol_new *control = &controls[i];
2286 if (codec->name_prefix) {
2287 snprintf(prefixed_name, sizeof(prefixed_name), "%s %s",
2288 codec->name_prefix, control->name);
2289 name = prefixed_name;
2291 name = control->name;
2293 err = snd_ctl_add(card, snd_soc_cnew(control, codec, name));
2295 dev_err(codec->dev, "%s: Failed to add %s: %d\n",
2296 codec->name, name, err);
2303 EXPORT_SYMBOL_GPL(snd_soc_add_controls);
2306 * snd_soc_info_enum_double - enumerated double mixer info callback
2307 * @kcontrol: mixer control
2308 * @uinfo: control element information
2310 * Callback to provide information about a double enumerated
2313 * Returns 0 for success.
2315 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2316 struct snd_ctl_elem_info *uinfo)
2318 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2320 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2321 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2322 uinfo->value.enumerated.items = e->max;
2324 if (uinfo->value.enumerated.item > e->max - 1)
2325 uinfo->value.enumerated.item = e->max - 1;
2326 strcpy(uinfo->value.enumerated.name,
2327 e->texts[uinfo->value.enumerated.item]);
2330 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2333 * snd_soc_get_enum_double - enumerated double mixer get callback
2334 * @kcontrol: mixer control
2335 * @ucontrol: control element information
2337 * Callback to get the value of a double enumerated mixer.
2339 * Returns 0 for success.
2341 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2342 struct snd_ctl_elem_value *ucontrol)
2344 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2345 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2346 unsigned int val, bitmask;
2348 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
2350 val = snd_soc_read(codec, e->reg);
2351 ucontrol->value.enumerated.item[0]
2352 = (val >> e->shift_l) & (bitmask - 1);
2353 if (e->shift_l != e->shift_r)
2354 ucontrol->value.enumerated.item[1] =
2355 (val >> e->shift_r) & (bitmask - 1);
2359 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2362 * snd_soc_put_enum_double - enumerated double mixer put callback
2363 * @kcontrol: mixer control
2364 * @ucontrol: control element information
2366 * Callback to set the value of a double enumerated mixer.
2368 * Returns 0 for success.
2370 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2371 struct snd_ctl_elem_value *ucontrol)
2373 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2374 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2376 unsigned int mask, bitmask;
2378 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
2380 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2382 val = ucontrol->value.enumerated.item[0] << e->shift_l;
2383 mask = (bitmask - 1) << e->shift_l;
2384 if (e->shift_l != e->shift_r) {
2385 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2387 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2388 mask |= (bitmask - 1) << e->shift_r;
2391 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2393 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2396 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2397 * @kcontrol: mixer control
2398 * @ucontrol: control element information
2400 * Callback to get the value of a double semi enumerated mixer.
2402 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2403 * used for handling bitfield coded enumeration for example.
2405 * Returns 0 for success.
2407 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
2408 struct snd_ctl_elem_value *ucontrol)
2410 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2411 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2412 unsigned int reg_val, val, mux;
2414 reg_val = snd_soc_read(codec, e->reg);
2415 val = (reg_val >> e->shift_l) & e->mask;
2416 for (mux = 0; mux < e->max; mux++) {
2417 if (val == e->values[mux])
2420 ucontrol->value.enumerated.item[0] = mux;
2421 if (e->shift_l != e->shift_r) {
2422 val = (reg_val >> e->shift_r) & e->mask;
2423 for (mux = 0; mux < e->max; mux++) {
2424 if (val == e->values[mux])
2427 ucontrol->value.enumerated.item[1] = mux;
2432 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
2435 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2436 * @kcontrol: mixer control
2437 * @ucontrol: control element information
2439 * Callback to set the value of a double semi enumerated mixer.
2441 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2442 * used for handling bitfield coded enumeration for example.
2444 * Returns 0 for success.
2446 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
2447 struct snd_ctl_elem_value *ucontrol)
2449 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2450 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2454 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2456 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2457 mask = e->mask << e->shift_l;
2458 if (e->shift_l != e->shift_r) {
2459 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2461 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2462 mask |= e->mask << e->shift_r;
2465 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2467 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
2470 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2471 * @kcontrol: mixer control
2472 * @uinfo: control element information
2474 * Callback to provide information about an external enumerated
2477 * Returns 0 for success.
2479 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
2480 struct snd_ctl_elem_info *uinfo)
2482 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2484 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2486 uinfo->value.enumerated.items = e->max;
2488 if (uinfo->value.enumerated.item > e->max - 1)
2489 uinfo->value.enumerated.item = e->max - 1;
2490 strcpy(uinfo->value.enumerated.name,
2491 e->texts[uinfo->value.enumerated.item]);
2494 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);
2497 * snd_soc_info_volsw_ext - external single mixer info callback
2498 * @kcontrol: mixer control
2499 * @uinfo: control element information
2501 * Callback to provide information about a single external mixer control.
2503 * Returns 0 for success.
2505 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
2506 struct snd_ctl_elem_info *uinfo)
2508 int max = kcontrol->private_value;
2510 if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
2511 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2513 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2516 uinfo->value.integer.min = 0;
2517 uinfo->value.integer.max = max;
2520 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);
2523 * snd_soc_info_volsw - single mixer info callback
2524 * @kcontrol: mixer control
2525 * @uinfo: control element information
2527 * Callback to provide information about a single mixer control.
2529 * Returns 0 for success.
2531 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2532 struct snd_ctl_elem_info *uinfo)
2534 struct soc_mixer_control *mc =
2535 (struct soc_mixer_control *)kcontrol->private_value;
2537 unsigned int shift = mc->shift;
2538 unsigned int rshift = mc->rshift;
2540 if (!mc->platform_max)
2541 mc->platform_max = mc->max;
2542 platform_max = mc->platform_max;
2544 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2545 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2547 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2549 uinfo->count = shift == rshift ? 1 : 2;
2550 uinfo->value.integer.min = 0;
2551 uinfo->value.integer.max = platform_max;
2554 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2557 * snd_soc_get_volsw - single mixer get callback
2558 * @kcontrol: mixer control
2559 * @ucontrol: control element information
2561 * Callback to get the value of a single mixer control.
2563 * Returns 0 for success.
2565 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2566 struct snd_ctl_elem_value *ucontrol)
2568 struct soc_mixer_control *mc =
2569 (struct soc_mixer_control *)kcontrol->private_value;
2570 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2571 unsigned int reg = mc->reg;
2572 unsigned int shift = mc->shift;
2573 unsigned int rshift = mc->rshift;
2575 unsigned int mask = (1 << fls(max)) - 1;
2576 unsigned int invert = mc->invert;
2578 ucontrol->value.integer.value[0] =
2579 (snd_soc_read(codec, reg) >> shift) & mask;
2580 if (shift != rshift)
2581 ucontrol->value.integer.value[1] =
2582 (snd_soc_read(codec, reg) >> rshift) & mask;
2584 ucontrol->value.integer.value[0] =
2585 max - ucontrol->value.integer.value[0];
2586 if (shift != rshift)
2587 ucontrol->value.integer.value[1] =
2588 max - ucontrol->value.integer.value[1];
2593 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2596 * snd_soc_put_volsw - single mixer put callback
2597 * @kcontrol: mixer control
2598 * @ucontrol: control element information
2600 * Callback to set the value of a single mixer control.
2602 * Returns 0 for success.
2604 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2605 struct snd_ctl_elem_value *ucontrol)
2607 struct soc_mixer_control *mc =
2608 (struct soc_mixer_control *)kcontrol->private_value;
2609 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2610 unsigned int reg = mc->reg;
2611 unsigned int shift = mc->shift;
2612 unsigned int rshift = mc->rshift;
2614 unsigned int mask = (1 << fls(max)) - 1;
2615 unsigned int invert = mc->invert;
2616 unsigned int val, val2, val_mask;
2618 val = (ucontrol->value.integer.value[0] & mask);
2621 val_mask = mask << shift;
2623 if (shift != rshift) {
2624 val2 = (ucontrol->value.integer.value[1] & mask);
2627 val_mask |= mask << rshift;
2628 val |= val2 << rshift;
2630 return snd_soc_update_bits_locked(codec, reg, val_mask, val);
2632 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2635 * snd_soc_info_volsw_2r - double mixer info callback
2636 * @kcontrol: mixer control
2637 * @uinfo: control element information
2639 * Callback to provide information about a double mixer control that
2640 * spans 2 codec registers.
2642 * Returns 0 for success.
2644 int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
2645 struct snd_ctl_elem_info *uinfo)
2647 struct soc_mixer_control *mc =
2648 (struct soc_mixer_control *)kcontrol->private_value;
2651 if (!mc->platform_max)
2652 mc->platform_max = mc->max;
2653 platform_max = mc->platform_max;
2655 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2656 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2658 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2661 uinfo->value.integer.min = 0;
2662 uinfo->value.integer.max = platform_max;
2665 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r);
2668 * snd_soc_get_volsw_2r - double mixer get callback
2669 * @kcontrol: mixer control
2670 * @ucontrol: control element information
2672 * Callback to get the value of a double mixer control that spans 2 registers.
2674 * Returns 0 for success.
2676 int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
2677 struct snd_ctl_elem_value *ucontrol)
2679 struct soc_mixer_control *mc =
2680 (struct soc_mixer_control *)kcontrol->private_value;
2681 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2682 unsigned int reg = mc->reg;
2683 unsigned int reg2 = mc->rreg;
2684 unsigned int shift = mc->shift;
2686 unsigned int mask = (1 << fls(max)) - 1;
2687 unsigned int invert = mc->invert;
2689 ucontrol->value.integer.value[0] =
2690 (snd_soc_read(codec, reg) >> shift) & mask;
2691 ucontrol->value.integer.value[1] =
2692 (snd_soc_read(codec, reg2) >> shift) & mask;
2694 ucontrol->value.integer.value[0] =
2695 max - ucontrol->value.integer.value[0];
2696 ucontrol->value.integer.value[1] =
2697 max - ucontrol->value.integer.value[1];
2702 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r);
2705 * snd_soc_put_volsw_2r - double mixer set callback
2706 * @kcontrol: mixer control
2707 * @ucontrol: control element information
2709 * Callback to set the value of a double mixer control that spans 2 registers.
2711 * Returns 0 for success.
2713 int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
2714 struct snd_ctl_elem_value *ucontrol)
2716 struct soc_mixer_control *mc =
2717 (struct soc_mixer_control *)kcontrol->private_value;
2718 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2719 unsigned int reg = mc->reg;
2720 unsigned int reg2 = mc->rreg;
2721 unsigned int shift = mc->shift;
2723 unsigned int mask = (1 << fls(max)) - 1;
2724 unsigned int invert = mc->invert;
2726 unsigned int val, val2, val_mask;
2728 val_mask = mask << shift;
2729 val = (ucontrol->value.integer.value[0] & mask);
2730 val2 = (ucontrol->value.integer.value[1] & mask);
2738 val2 = val2 << shift;
2740 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2744 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2747 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r);
2750 * snd_soc_info_volsw_s8 - signed mixer info callback
2751 * @kcontrol: mixer control
2752 * @uinfo: control element information
2754 * Callback to provide information about a signed mixer control.
2756 * Returns 0 for success.
2758 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2759 struct snd_ctl_elem_info *uinfo)
2761 struct soc_mixer_control *mc =
2762 (struct soc_mixer_control *)kcontrol->private_value;
2766 if (!mc->platform_max)
2767 mc->platform_max = mc->max;
2768 platform_max = mc->platform_max;
2770 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2772 uinfo->value.integer.min = 0;
2773 uinfo->value.integer.max = platform_max - min;
2776 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2779 * snd_soc_get_volsw_s8 - signed mixer get callback
2780 * @kcontrol: mixer control
2781 * @ucontrol: control element information
2783 * Callback to get the value of a signed mixer control.
2785 * Returns 0 for success.
2787 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2788 struct snd_ctl_elem_value *ucontrol)
2790 struct soc_mixer_control *mc =
2791 (struct soc_mixer_control *)kcontrol->private_value;
2792 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2793 unsigned int reg = mc->reg;
2795 int val = snd_soc_read(codec, reg);
2797 ucontrol->value.integer.value[0] =
2798 ((signed char)(val & 0xff))-min;
2799 ucontrol->value.integer.value[1] =
2800 ((signed char)((val >> 8) & 0xff))-min;
2803 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2806 * snd_soc_put_volsw_sgn - signed mixer put callback
2807 * @kcontrol: mixer control
2808 * @ucontrol: control element information
2810 * Callback to set the value of a signed mixer control.
2812 * Returns 0 for success.
2814 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2815 struct snd_ctl_elem_value *ucontrol)
2817 struct soc_mixer_control *mc =
2818 (struct soc_mixer_control *)kcontrol->private_value;
2819 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2820 unsigned int reg = mc->reg;
2824 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2825 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2827 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
2829 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2832 * snd_soc_limit_volume - Set new limit to an existing volume control.
2834 * @codec: where to look for the control
2835 * @name: Name of the control
2836 * @max: new maximum limit
2838 * Return 0 for success, else error.
2840 int snd_soc_limit_volume(struct snd_soc_codec *codec,
2841 const char *name, int max)
2843 struct snd_card *card = codec->card->snd_card;
2844 struct snd_kcontrol *kctl;
2845 struct soc_mixer_control *mc;
2849 /* Sanity check for name and max */
2850 if (unlikely(!name || max <= 0))
2853 list_for_each_entry(kctl, &card->controls, list) {
2854 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
2860 mc = (struct soc_mixer_control *)kctl->private_value;
2861 if (max <= mc->max) {
2862 mc->platform_max = max;
2868 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
2871 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2872 * mixer info callback
2873 * @kcontrol: mixer control
2874 * @uinfo: control element information
2876 * Returns 0 for success.
2878 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2879 struct snd_ctl_elem_info *uinfo)
2881 struct soc_mixer_control *mc =
2882 (struct soc_mixer_control *)kcontrol->private_value;
2886 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2888 uinfo->value.integer.min = 0;
2889 uinfo->value.integer.max = max-min;
2893 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx);
2896 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
2897 * mixer get callback
2898 * @kcontrol: mixer control
2899 * @uinfo: control element information
2901 * Returns 0 for success.
2903 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2904 struct snd_ctl_elem_value *ucontrol)
2906 struct soc_mixer_control *mc =
2907 (struct soc_mixer_control *)kcontrol->private_value;
2908 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2909 unsigned int mask = (1<<mc->shift)-1;
2911 int val = snd_soc_read(codec, mc->reg) & mask;
2912 int valr = snd_soc_read(codec, mc->rreg) & mask;
2914 ucontrol->value.integer.value[0] = ((val & 0xff)-min) & mask;
2915 ucontrol->value.integer.value[1] = ((valr & 0xff)-min) & mask;
2918 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx);
2921 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
2922 * mixer put callback
2923 * @kcontrol: mixer control
2924 * @uinfo: control element information
2926 * Returns 0 for success.
2928 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2929 struct snd_ctl_elem_value *ucontrol)
2931 struct soc_mixer_control *mc =
2932 (struct soc_mixer_control *)kcontrol->private_value;
2933 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2934 unsigned int mask = (1<<mc->shift)-1;
2937 unsigned int val, valr, oval, ovalr;
2939 val = ((ucontrol->value.integer.value[0]+min) & 0xff);
2941 valr = ((ucontrol->value.integer.value[1]+min) & 0xff);
2944 oval = snd_soc_read(codec, mc->reg) & mask;
2945 ovalr = snd_soc_read(codec, mc->rreg) & mask;
2949 ret = snd_soc_write(codec, mc->reg, val);
2953 if (ovalr != valr) {
2954 ret = snd_soc_write(codec, mc->rreg, valr);
2961 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx);
2964 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2966 * @clk_id: DAI specific clock ID
2967 * @freq: new clock frequency in Hz
2968 * @dir: new clock direction - input/output.
2970 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2972 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
2973 unsigned int freq, int dir)
2975 if (dai->driver && dai->driver->ops->set_sysclk)
2976 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
2980 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
2983 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2985 * @div_id: DAI specific clock divider ID
2986 * @div: new clock divisor.
2988 * Configures the clock dividers. This is used to derive the best DAI bit and
2989 * frame clocks from the system or master clock. It's best to set the DAI bit
2990 * and frame clocks as low as possible to save system power.
2992 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
2993 int div_id, int div)
2995 if (dai->driver && dai->driver->ops->set_clkdiv)
2996 return dai->driver->ops->set_clkdiv(dai, div_id, div);
3000 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
3003 * snd_soc_dai_set_pll - configure DAI PLL.
3005 * @pll_id: DAI specific PLL ID
3006 * @source: DAI specific source for the PLL
3007 * @freq_in: PLL input clock frequency in Hz
3008 * @freq_out: requested PLL output clock frequency in Hz
3010 * Configures and enables PLL to generate output clock based on input clock.
3012 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
3013 unsigned int freq_in, unsigned int freq_out)
3015 if (dai->driver && dai->driver->ops->set_pll)
3016 return dai->driver->ops->set_pll(dai, pll_id, source,
3021 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
3024 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3026 * @fmt: SND_SOC_DAIFMT_ format value.
3028 * Configures the DAI hardware format and clocking.
3030 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
3032 if (dai->driver && dai->driver->ops->set_fmt)
3033 return dai->driver->ops->set_fmt(dai, fmt);
3037 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
3040 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3042 * @tx_mask: bitmask representing active TX slots.
3043 * @rx_mask: bitmask representing active RX slots.
3044 * @slots: Number of slots in use.
3045 * @slot_width: Width in bits for each slot.
3047 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3050 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
3051 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3053 if (dai->driver && dai->driver->ops->set_tdm_slot)
3054 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3059 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3062 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3064 * @tx_num: how many TX channels
3065 * @tx_slot: pointer to an array which imply the TX slot number channel
3067 * @rx_num: how many RX channels
3068 * @rx_slot: pointer to an array which imply the RX slot number channel
3071 * configure the relationship between channel number and TDM slot number.
3073 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3074 unsigned int tx_num, unsigned int *tx_slot,
3075 unsigned int rx_num, unsigned int *rx_slot)
3077 if (dai->driver && dai->driver->ops->set_channel_map)
3078 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3083 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3086 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3088 * @tristate: tristate enable
3090 * Tristates the DAI so that others can use it.
3092 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3094 if (dai->driver && dai->driver->ops->set_tristate)
3095 return dai->driver->ops->set_tristate(dai, tristate);
3099 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3102 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3104 * @mute: mute enable
3106 * Mutes the DAI DAC.
3108 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
3110 if (dai->driver && dai->driver->ops->digital_mute)
3111 return dai->driver->ops->digital_mute(dai, mute);
3115 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3118 * snd_soc_register_card - Register a card with the ASoC core
3120 * @card: Card to register
3122 * Note that currently this is an internal only function: it will be
3123 * exposed to machine drivers after further backporting of ASoC v2
3124 * registration APIs.
3126 static int snd_soc_register_card(struct snd_soc_card *card)
3130 if (!card->name || !card->dev)
3133 card->rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime) *
3134 (card->num_links + card->num_aux_devs),
3136 if (card->rtd == NULL)
3138 card->rtd_aux = &card->rtd[card->num_links];
3140 for (i = 0; i < card->num_links; i++)
3141 card->rtd[i].dai_link = &card->dai_link[i];
3143 INIT_LIST_HEAD(&card->list);
3144 card->instantiated = 0;
3145 mutex_init(&card->mutex);
3147 mutex_lock(&client_mutex);
3148 list_add(&card->list, &card_list);
3149 snd_soc_instantiate_cards();
3150 mutex_unlock(&client_mutex);
3152 dev_dbg(card->dev, "Registered card '%s'\n", card->name);
3158 * snd_soc_unregister_card - Unregister a card with the ASoC core
3160 * @card: Card to unregister
3162 * Note that currently this is an internal only function: it will be
3163 * exposed to machine drivers after further backporting of ASoC v2
3164 * registration APIs.
3166 static int snd_soc_unregister_card(struct snd_soc_card *card)
3168 mutex_lock(&client_mutex);
3169 list_del(&card->list);
3170 mutex_unlock(&client_mutex);
3171 dev_dbg(card->dev, "Unregistered card '%s'\n", card->name);
3177 * Simplify DAI link configuration by removing ".-1" from device names
3178 * and sanitizing names.
3180 static char *fmt_single_name(struct device *dev, int *id)
3182 char *found, name[NAME_SIZE];
3185 if (dev_name(dev) == NULL)
3188 strlcpy(name, dev_name(dev), NAME_SIZE);
3190 /* are we a "%s.%d" name (platform and SPI components) */
3191 found = strstr(name, dev->driver->name);
3194 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3196 /* discard ID from name if ID == -1 */
3198 found[strlen(dev->driver->name)] = '\0';
3202 /* I2C component devices are named "bus-addr" */
3203 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3204 char tmp[NAME_SIZE];
3206 /* create unique ID number from I2C addr and bus */
3207 *id = ((id1 & 0xffff) << 16) + id2;
3209 /* sanitize component name for DAI link creation */
3210 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3211 strlcpy(name, tmp, NAME_SIZE);
3216 return kstrdup(name, GFP_KERNEL);
3220 * Simplify DAI link naming for single devices with multiple DAIs by removing
3221 * any ".-1" and using the DAI name (instead of device name).
3223 static inline char *fmt_multiple_name(struct device *dev,
3224 struct snd_soc_dai_driver *dai_drv)
3226 if (dai_drv->name == NULL) {
3227 printk(KERN_ERR "asoc: error - multiple DAI %s registered with no name\n",
3232 return kstrdup(dai_drv->name, GFP_KERNEL);
3236 * snd_soc_register_dai - Register a DAI with the ASoC core
3238 * @dai: DAI to register
3240 int snd_soc_register_dai(struct device *dev,
3241 struct snd_soc_dai_driver *dai_drv)
3243 struct snd_soc_dai *dai;
3245 dev_dbg(dev, "dai register %s\n", dev_name(dev));
3247 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3251 /* create DAI component name */
3252 dai->name = fmt_single_name(dev, &dai->id);
3253 if (dai->name == NULL) {
3259 dai->driver = dai_drv;
3260 if (!dai->driver->ops)
3261 dai->driver->ops = &null_dai_ops;
3263 mutex_lock(&client_mutex);
3264 list_add(&dai->list, &dai_list);
3265 snd_soc_instantiate_cards();
3266 mutex_unlock(&client_mutex);
3268 pr_debug("Registered DAI '%s'\n", dai->name);
3272 EXPORT_SYMBOL_GPL(snd_soc_register_dai);
3275 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3277 * @dai: DAI to unregister
3279 void snd_soc_unregister_dai(struct device *dev)
3281 struct snd_soc_dai *dai;
3283 list_for_each_entry(dai, &dai_list, list) {
3284 if (dev == dai->dev)
3290 mutex_lock(&client_mutex);
3291 list_del(&dai->list);
3292 mutex_unlock(&client_mutex);
3294 pr_debug("Unregistered DAI '%s'\n", dai->name);
3298 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
3301 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3303 * @dai: Array of DAIs to register
3304 * @count: Number of DAIs
3306 int snd_soc_register_dais(struct device *dev,
3307 struct snd_soc_dai_driver *dai_drv, size_t count)
3309 struct snd_soc_dai *dai;
3312 dev_dbg(dev, "dai register %s #%Zu\n", dev_name(dev), count);
3314 for (i = 0; i < count; i++) {
3316 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3322 /* create DAI component name */
3323 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3324 if (dai->name == NULL) {
3331 dai->driver = &dai_drv[i];
3332 if (dai->driver->id)
3333 dai->id = dai->driver->id;
3336 if (!dai->driver->ops)
3337 dai->driver->ops = &null_dai_ops;
3339 mutex_lock(&client_mutex);
3340 list_add(&dai->list, &dai_list);
3341 mutex_unlock(&client_mutex);
3343 pr_debug("Registered DAI '%s'\n", dai->name);
3346 mutex_lock(&client_mutex);
3347 snd_soc_instantiate_cards();
3348 mutex_unlock(&client_mutex);
3352 for (i--; i >= 0; i--)
3353 snd_soc_unregister_dai(dev);
3357 EXPORT_SYMBOL_GPL(snd_soc_register_dais);
3360 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3362 * @dai: Array of DAIs to unregister
3363 * @count: Number of DAIs
3365 void snd_soc_unregister_dais(struct device *dev, size_t count)
3369 for (i = 0; i < count; i++)
3370 snd_soc_unregister_dai(dev);
3372 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
3375 * snd_soc_register_platform - Register a platform with the ASoC core
3377 * @platform: platform to register
3379 int snd_soc_register_platform(struct device *dev,
3380 struct snd_soc_platform_driver *platform_drv)
3382 struct snd_soc_platform *platform;
3384 dev_dbg(dev, "platform register %s\n", dev_name(dev));
3386 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3387 if (platform == NULL)
3390 /* create platform component name */
3391 platform->name = fmt_single_name(dev, &platform->id);
3392 if (platform->name == NULL) {
3397 platform->dev = dev;
3398 platform->driver = platform_drv;
3400 mutex_lock(&client_mutex);
3401 list_add(&platform->list, &platform_list);
3402 snd_soc_instantiate_cards();
3403 mutex_unlock(&client_mutex);
3405 pr_debug("Registered platform '%s'\n", platform->name);
3409 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3412 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3414 * @platform: platform to unregister
3416 void snd_soc_unregister_platform(struct device *dev)
3418 struct snd_soc_platform *platform;
3420 list_for_each_entry(platform, &platform_list, list) {
3421 if (dev == platform->dev)
3427 mutex_lock(&client_mutex);
3428 list_del(&platform->list);
3429 mutex_unlock(&client_mutex);
3431 pr_debug("Unregistered platform '%s'\n", platform->name);
3432 kfree(platform->name);
3435 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3437 static u64 codec_format_map[] = {
3438 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
3439 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
3440 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
3441 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
3442 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
3443 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
3444 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3445 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3446 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
3447 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
3448 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
3449 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
3450 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
3451 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
3452 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3453 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
3456 /* Fix up the DAI formats for endianness: codecs don't actually see
3457 * the endianness of the data but we're using the CPU format
3458 * definitions which do need to include endianness so we ensure that
3459 * codec DAIs always have both big and little endian variants set.
3461 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
3465 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
3466 if (stream->formats & codec_format_map[i])
3467 stream->formats |= codec_format_map[i];
3471 * snd_soc_register_codec - Register a codec with the ASoC core
3473 * @codec: codec to register
3475 int snd_soc_register_codec(struct device *dev,
3476 const struct snd_soc_codec_driver *codec_drv,
3477 struct snd_soc_dai_driver *dai_drv,
3481 struct snd_soc_codec *codec;
3484 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3486 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3490 /* create CODEC component name */
3491 codec->name = fmt_single_name(dev, &codec->id);
3492 if (codec->name == NULL) {
3497 if (codec_drv->compress_type)
3498 codec->compress_type = codec_drv->compress_type;
3500 codec->compress_type = SND_SOC_FLAT_COMPRESSION;
3502 INIT_LIST_HEAD(&codec->dapm.widgets);
3503 INIT_LIST_HEAD(&codec->dapm.paths);
3504 codec->write = codec_drv->write;
3505 codec->read = codec_drv->read;
3506 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
3507 codec->dapm.dev = dev;
3508 codec->dapm.codec = codec;
3510 codec->driver = codec_drv;
3511 codec->num_dai = num_dai;
3512 mutex_init(&codec->mutex);
3514 /* allocate CODEC register cache */
3515 if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
3516 reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
3517 /* it is necessary to make a copy of the default register cache
3518 * because in the case of using a compression type that requires
3519 * the default register cache to be marked as __devinitconst the
3520 * kernel might have freed the array by the time we initialize
3523 codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
3524 reg_size, GFP_KERNEL);
3525 if (!codec->reg_def_copy) {
3531 for (i = 0; i < num_dai; i++) {
3532 fixup_codec_formats(&dai_drv[i].playback);
3533 fixup_codec_formats(&dai_drv[i].capture);
3536 /* register any DAIs */
3538 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
3543 mutex_lock(&client_mutex);
3544 list_add(&codec->list, &codec_list);
3545 snd_soc_instantiate_cards();
3546 mutex_unlock(&client_mutex);
3548 pr_debug("Registered codec '%s'\n", codec->name);
3552 kfree(codec->reg_def_copy);
3553 codec->reg_def_copy = NULL;
3558 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
3561 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3563 * @codec: codec to unregister
3565 void snd_soc_unregister_codec(struct device *dev)
3567 struct snd_soc_codec *codec;
3570 list_for_each_entry(codec, &codec_list, list) {
3571 if (dev == codec->dev)
3578 for (i = 0; i < codec->num_dai; i++)
3579 snd_soc_unregister_dai(dev);
3581 mutex_lock(&client_mutex);
3582 list_del(&codec->list);
3583 mutex_unlock(&client_mutex);
3585 pr_debug("Unregistered codec '%s'\n", codec->name);
3587 snd_soc_cache_exit(codec);
3588 kfree(codec->reg_def_copy);
3592 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
3594 static int __init snd_soc_init(void)
3596 #ifdef CONFIG_DEBUG_FS
3597 debugfs_root = debugfs_create_dir("asoc", NULL);
3598 if (IS_ERR(debugfs_root) || !debugfs_root) {
3600 "ASoC: Failed to create debugfs directory\n");
3601 debugfs_root = NULL;
3604 if (!debugfs_create_file("codecs", 0444, debugfs_root, NULL,
3606 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3608 if (!debugfs_create_file("dais", 0444, debugfs_root, NULL,
3610 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3612 if (!debugfs_create_file("platforms", 0444, debugfs_root, NULL,
3613 &platform_list_fops))
3614 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3617 return platform_driver_register(&soc_driver);
3619 module_init(snd_soc_init);
3621 static void __exit snd_soc_exit(void)
3623 #ifdef CONFIG_DEBUG_FS
3624 debugfs_remove_recursive(debugfs_root);
3626 platform_driver_unregister(&soc_driver);
3628 module_exit(snd_soc_exit);
3630 /* Module information */
3631 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3632 MODULE_DESCRIPTION("ALSA SoC Core");
3633 MODULE_LICENSE("GPL");
3634 MODULE_ALIAS("platform:soc-audio");