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 struct dentry *snd_soc_debugfs_root;
52 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
55 static DEFINE_MUTEX(client_mutex);
56 static LIST_HEAD(card_list);
57 static LIST_HEAD(dai_list);
58 static LIST_HEAD(platform_list);
59 static LIST_HEAD(codec_list);
61 static int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num);
64 * This is a timeout to do a DAPM powerdown after a stream is closed().
65 * It can be used to eliminate pops between different playback streams, e.g.
66 * between two audio tracks.
68 static int pmdown_time = 5000;
69 module_param(pmdown_time, int, 0);
70 MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
72 /* returns the minimum number of bytes needed to represent
73 * a particular given value */
74 static int min_bytes_needed(unsigned long val)
79 for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
82 c = (sizeof val * 8) - c;
90 /* fill buf which is 'len' bytes with a formatted
91 * string of the form 'reg: value\n' */
92 static int format_register_str(struct snd_soc_codec *codec,
93 unsigned int reg, char *buf, size_t len)
95 int wordsize = codec->driver->reg_word_size * 2;
96 int regsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
99 char regbuf[regsize + 1];
101 /* since tmpbuf is allocated on the stack, warn the callers if they
102 * try to abuse this function */
105 /* +2 for ': ' and + 1 for '\n' */
106 if (wordsize + regsize + 2 + 1 != len)
109 ret = snd_soc_read(codec , reg);
111 memset(regbuf, 'X', regsize);
112 regbuf[regsize] = '\0';
114 snprintf(regbuf, regsize + 1, "%.*x", regsize, ret);
117 /* prepare the buffer */
118 snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf);
119 /* copy it back to the caller without the '\0' */
120 memcpy(buf, tmpbuf, len);
125 /* codec register dump */
126 static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
127 size_t count, loff_t pos)
130 int wordsize, regsize;
135 wordsize = codec->driver->reg_word_size * 2;
136 regsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
138 len = wordsize + regsize + 2 + 1;
140 if (!codec->driver->reg_cache_size)
143 if (codec->driver->reg_cache_step)
144 step = codec->driver->reg_cache_step;
146 for (i = 0; i < codec->driver->reg_cache_size; i += step) {
147 if (codec->readable_register && !codec->readable_register(codec, i))
149 if (codec->driver->display_register) {
150 count += codec->driver->display_register(codec, buf + count,
151 PAGE_SIZE - count, i);
153 /* only support larger than PAGE_SIZE bytes debugfs
154 * entries for the default case */
156 if (total + len >= count - 1)
158 format_register_str(codec, i, buf + total, len);
165 total = min(total, count - 1);
170 static ssize_t codec_reg_show(struct device *dev,
171 struct device_attribute *attr, char *buf)
173 struct snd_soc_pcm_runtime *rtd =
174 container_of(dev, struct snd_soc_pcm_runtime, dev);
176 return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
179 static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
181 static ssize_t pmdown_time_show(struct device *dev,
182 struct device_attribute *attr, char *buf)
184 struct snd_soc_pcm_runtime *rtd =
185 container_of(dev, struct snd_soc_pcm_runtime, dev);
187 return sprintf(buf, "%ld\n", rtd->pmdown_time);
190 static ssize_t pmdown_time_set(struct device *dev,
191 struct device_attribute *attr,
192 const char *buf, size_t count)
194 struct snd_soc_pcm_runtime *rtd =
195 container_of(dev, struct snd_soc_pcm_runtime, dev);
198 ret = strict_strtol(buf, 10, &rtd->pmdown_time);
205 static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
207 #ifdef CONFIG_DEBUG_FS
208 static int codec_reg_open_file(struct inode *inode, struct file *file)
210 file->private_data = inode->i_private;
214 static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
215 size_t count, loff_t *ppos)
218 struct snd_soc_codec *codec = file->private_data;
221 if (*ppos < 0 || !count)
224 buf = kmalloc(count, GFP_KERNEL);
228 ret = soc_codec_reg_show(codec, buf, count, *ppos);
230 if (copy_to_user(user_buf, buf, ret)) {
241 static ssize_t codec_reg_write_file(struct file *file,
242 const char __user *user_buf, size_t count, loff_t *ppos)
247 unsigned long reg, value;
249 struct snd_soc_codec *codec = file->private_data;
251 buf_size = min(count, (sizeof(buf)-1));
252 if (copy_from_user(buf, user_buf, buf_size))
256 if (codec->driver->reg_cache_step)
257 step = codec->driver->reg_cache_step;
259 while (*start == ' ')
261 reg = simple_strtoul(start, &start, 16);
262 if ((reg >= codec->driver->reg_cache_size) || (reg % step))
264 while (*start == ' ')
266 if (strict_strtoul(start, 16, &value))
269 /* Userspace has been fiddling around behind the kernel's back */
270 add_taint(TAINT_USER);
272 snd_soc_write(codec, reg, value);
276 static const struct file_operations codec_reg_fops = {
277 .open = codec_reg_open_file,
278 .read = codec_reg_read_file,
279 .write = codec_reg_write_file,
280 .llseek = default_llseek,
283 static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
285 struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
287 codec->debugfs_codec_root = debugfs_create_dir(codec->name,
289 if (!codec->debugfs_codec_root) {
291 "ASoC: Failed to create codec debugfs directory\n");
295 debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
297 debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
300 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
301 codec->debugfs_codec_root,
302 codec, &codec_reg_fops);
303 if (!codec->debugfs_reg)
305 "ASoC: Failed to create codec register debugfs file\n");
307 codec->dapm.debugfs_dapm = debugfs_create_dir("dapm",
308 codec->debugfs_codec_root);
309 if (!codec->dapm.debugfs_dapm)
311 "Failed to create DAPM debugfs directory\n");
313 snd_soc_dapm_debugfs_init(&codec->dapm);
316 static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
318 debugfs_remove_recursive(codec->debugfs_codec_root);
321 static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
322 size_t count, loff_t *ppos)
324 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
325 ssize_t len, ret = 0;
326 struct snd_soc_codec *codec;
331 list_for_each_entry(codec, &codec_list, list) {
332 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
336 if (ret > PAGE_SIZE) {
343 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
350 static const struct file_operations codec_list_fops = {
351 .read = codec_list_read_file,
352 .llseek = default_llseek,/* read accesses f_pos */
355 static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
356 size_t count, loff_t *ppos)
358 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
359 ssize_t len, ret = 0;
360 struct snd_soc_dai *dai;
365 list_for_each_entry(dai, &dai_list, list) {
366 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", dai->name);
369 if (ret > PAGE_SIZE) {
375 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
382 static const struct file_operations dai_list_fops = {
383 .read = dai_list_read_file,
384 .llseek = default_llseek,/* read accesses f_pos */
387 static ssize_t platform_list_read_file(struct file *file,
388 char __user *user_buf,
389 size_t count, loff_t *ppos)
391 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
392 ssize_t len, ret = 0;
393 struct snd_soc_platform *platform;
398 list_for_each_entry(platform, &platform_list, list) {
399 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
403 if (ret > PAGE_SIZE) {
409 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
416 static const struct file_operations platform_list_fops = {
417 .read = platform_list_read_file,
418 .llseek = default_llseek,/* read accesses f_pos */
421 static void soc_init_card_debugfs(struct snd_soc_card *card)
423 card->debugfs_card_root = debugfs_create_dir(card->name,
424 snd_soc_debugfs_root);
425 if (!card->debugfs_card_root) {
427 "ASoC: Failed to create codec debugfs directory\n");
431 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
432 card->debugfs_card_root,
434 if (!card->debugfs_pop_time)
436 "Failed to create pop time debugfs file\n");
439 static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
441 debugfs_remove_recursive(card->debugfs_card_root);
446 static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
450 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
454 static inline void soc_init_card_debugfs(struct snd_soc_card *card)
458 static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
463 #ifdef CONFIG_SND_SOC_AC97_BUS
464 /* unregister ac97 codec */
465 static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
467 if (codec->ac97->dev.bus)
468 device_unregister(&codec->ac97->dev);
472 /* stop no dev release warning */
473 static void soc_ac97_device_release(struct device *dev){}
475 /* register ac97 codec to bus */
476 static int soc_ac97_dev_register(struct snd_soc_codec *codec)
480 codec->ac97->dev.bus = &ac97_bus_type;
481 codec->ac97->dev.parent = codec->card->dev;
482 codec->ac97->dev.release = soc_ac97_device_release;
484 dev_set_name(&codec->ac97->dev, "%d-%d:%s",
485 codec->card->snd_card->number, 0, codec->name);
486 err = device_register(&codec->ac97->dev);
488 snd_printk(KERN_ERR "Can't register ac97 bus\n");
489 codec->ac97->dev.bus = NULL;
496 static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream)
498 struct snd_soc_pcm_runtime *rtd = substream->private_data;
499 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
500 struct snd_soc_dai *codec_dai = rtd->codec_dai;
503 if (!codec_dai->driver->symmetric_rates &&
504 !cpu_dai->driver->symmetric_rates &&
505 !rtd->dai_link->symmetric_rates)
508 /* This can happen if multiple streams are starting simultaneously -
509 * the second can need to get its constraints before the first has
510 * picked a rate. Complain and allow the application to carry on.
514 "Not enforcing symmetric_rates due to race\n");
518 dev_dbg(&rtd->dev, "Symmetry forces %dHz rate\n", rtd->rate);
520 ret = snd_pcm_hw_constraint_minmax(substream->runtime,
521 SNDRV_PCM_HW_PARAM_RATE,
522 rtd->rate, rtd->rate);
525 "Unable to apply rate symmetry constraint: %d\n", ret);
533 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
534 * then initialized and any private data can be allocated. This also calls
535 * startup for the cpu DAI, platform, machine and codec DAI.
537 static int soc_pcm_open(struct snd_pcm_substream *substream)
539 struct snd_soc_pcm_runtime *rtd = substream->private_data;
540 struct snd_pcm_runtime *runtime = substream->runtime;
541 struct snd_soc_platform *platform = rtd->platform;
542 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
543 struct snd_soc_dai *codec_dai = rtd->codec_dai;
544 struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver;
545 struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver;
548 mutex_lock(&pcm_mutex);
550 /* startup the audio subsystem */
551 if (cpu_dai->driver->ops->startup) {
552 ret = cpu_dai->driver->ops->startup(substream, cpu_dai);
554 printk(KERN_ERR "asoc: can't open interface %s\n",
560 if (platform->driver->ops->open) {
561 ret = platform->driver->ops->open(substream);
563 printk(KERN_ERR "asoc: can't open platform %s\n", platform->name);
568 if (codec_dai->driver->ops->startup) {
569 ret = codec_dai->driver->ops->startup(substream, codec_dai);
571 printk(KERN_ERR "asoc: can't open codec %s\n",
577 if (rtd->dai_link->ops && rtd->dai_link->ops->startup) {
578 ret = rtd->dai_link->ops->startup(substream);
580 printk(KERN_ERR "asoc: %s startup failed\n", rtd->dai_link->name);
585 /* Check that the codec and cpu DAIs are compatible */
586 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
587 runtime->hw.rate_min =
588 max(codec_dai_drv->playback.rate_min,
589 cpu_dai_drv->playback.rate_min);
590 runtime->hw.rate_max =
591 min(codec_dai_drv->playback.rate_max,
592 cpu_dai_drv->playback.rate_max);
593 runtime->hw.channels_min =
594 max(codec_dai_drv->playback.channels_min,
595 cpu_dai_drv->playback.channels_min);
596 runtime->hw.channels_max =
597 min(codec_dai_drv->playback.channels_max,
598 cpu_dai_drv->playback.channels_max);
599 runtime->hw.formats =
600 codec_dai_drv->playback.formats & cpu_dai_drv->playback.formats;
602 codec_dai_drv->playback.rates & cpu_dai_drv->playback.rates;
603 if (codec_dai_drv->playback.rates
604 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
605 runtime->hw.rates |= cpu_dai_drv->playback.rates;
606 if (cpu_dai_drv->playback.rates
607 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
608 runtime->hw.rates |= codec_dai_drv->playback.rates;
610 runtime->hw.rate_min =
611 max(codec_dai_drv->capture.rate_min,
612 cpu_dai_drv->capture.rate_min);
613 runtime->hw.rate_max =
614 min(codec_dai_drv->capture.rate_max,
615 cpu_dai_drv->capture.rate_max);
616 runtime->hw.channels_min =
617 max(codec_dai_drv->capture.channels_min,
618 cpu_dai_drv->capture.channels_min);
619 runtime->hw.channels_max =
620 min(codec_dai_drv->capture.channels_max,
621 cpu_dai_drv->capture.channels_max);
622 runtime->hw.formats =
623 codec_dai_drv->capture.formats & cpu_dai_drv->capture.formats;
625 codec_dai_drv->capture.rates & cpu_dai_drv->capture.rates;
626 if (codec_dai_drv->capture.rates
627 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
628 runtime->hw.rates |= cpu_dai_drv->capture.rates;
629 if (cpu_dai_drv->capture.rates
630 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
631 runtime->hw.rates |= codec_dai_drv->capture.rates;
634 snd_pcm_limit_hw_rates(runtime);
635 if (!runtime->hw.rates) {
636 printk(KERN_ERR "asoc: %s <-> %s No matching rates\n",
637 codec_dai->name, cpu_dai->name);
640 if (!runtime->hw.formats) {
641 printk(KERN_ERR "asoc: %s <-> %s No matching formats\n",
642 codec_dai->name, cpu_dai->name);
645 if (!runtime->hw.channels_min || !runtime->hw.channels_max) {
646 printk(KERN_ERR "asoc: %s <-> %s No matching channels\n",
647 codec_dai->name, cpu_dai->name);
651 /* Symmetry only applies if we've already got an active stream. */
652 if (cpu_dai->active || codec_dai->active) {
653 ret = soc_pcm_apply_symmetry(substream);
658 pr_debug("asoc: %s <-> %s info:\n",
659 codec_dai->name, cpu_dai->name);
660 pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates);
661 pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min,
662 runtime->hw.channels_max);
663 pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min,
664 runtime->hw.rate_max);
666 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
667 cpu_dai->playback_active++;
668 codec_dai->playback_active++;
670 cpu_dai->capture_active++;
671 codec_dai->capture_active++;
675 rtd->codec->active++;
676 mutex_unlock(&pcm_mutex);
680 if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
681 rtd->dai_link->ops->shutdown(substream);
684 if (codec_dai->driver->ops->shutdown)
685 codec_dai->driver->ops->shutdown(substream, codec_dai);
688 if (platform->driver->ops->close)
689 platform->driver->ops->close(substream);
692 if (cpu_dai->driver->ops->shutdown)
693 cpu_dai->driver->ops->shutdown(substream, cpu_dai);
695 mutex_unlock(&pcm_mutex);
700 * Power down the audio subsystem pmdown_time msecs after close is called.
701 * This is to ensure there are no pops or clicks in between any music tracks
702 * due to DAPM power cycling.
704 static void close_delayed_work(struct work_struct *work)
706 struct snd_soc_pcm_runtime *rtd =
707 container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
708 struct snd_soc_dai *codec_dai = rtd->codec_dai;
710 mutex_lock(&pcm_mutex);
712 pr_debug("pop wq checking: %s status: %s waiting: %s\n",
713 codec_dai->driver->playback.stream_name,
714 codec_dai->playback_active ? "active" : "inactive",
715 codec_dai->pop_wait ? "yes" : "no");
717 /* are we waiting on this codec DAI stream */
718 if (codec_dai->pop_wait == 1) {
719 codec_dai->pop_wait = 0;
720 snd_soc_dapm_stream_event(rtd,
721 codec_dai->driver->playback.stream_name,
722 SND_SOC_DAPM_STREAM_STOP);
725 mutex_unlock(&pcm_mutex);
729 * Called by ALSA when a PCM substream is closed. Private data can be
730 * freed here. The cpu DAI, codec DAI, machine and platform are also
733 static int soc_codec_close(struct snd_pcm_substream *substream)
735 struct snd_soc_pcm_runtime *rtd = substream->private_data;
736 struct snd_soc_platform *platform = rtd->platform;
737 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
738 struct snd_soc_dai *codec_dai = rtd->codec_dai;
739 struct snd_soc_codec *codec = rtd->codec;
741 mutex_lock(&pcm_mutex);
743 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
744 cpu_dai->playback_active--;
745 codec_dai->playback_active--;
747 cpu_dai->capture_active--;
748 codec_dai->capture_active--;
755 /* Muting the DAC suppresses artifacts caused during digital
756 * shutdown, for example from stopping clocks.
758 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
759 snd_soc_dai_digital_mute(codec_dai, 1);
761 if (cpu_dai->driver->ops->shutdown)
762 cpu_dai->driver->ops->shutdown(substream, cpu_dai);
764 if (codec_dai->driver->ops->shutdown)
765 codec_dai->driver->ops->shutdown(substream, codec_dai);
767 if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
768 rtd->dai_link->ops->shutdown(substream);
770 if (platform->driver->ops->close)
771 platform->driver->ops->close(substream);
772 cpu_dai->runtime = NULL;
774 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
775 /* start delayed pop wq here for playback streams */
776 codec_dai->pop_wait = 1;
777 schedule_delayed_work(&rtd->delayed_work,
778 msecs_to_jiffies(rtd->pmdown_time));
780 /* capture streams can be powered down now */
781 snd_soc_dapm_stream_event(rtd,
782 codec_dai->driver->capture.stream_name,
783 SND_SOC_DAPM_STREAM_STOP);
786 mutex_unlock(&pcm_mutex);
791 * Called by ALSA when the PCM substream is prepared, can set format, sample
792 * rate, etc. This function is non atomic and can be called multiple times,
793 * it can refer to the runtime info.
795 static int soc_pcm_prepare(struct snd_pcm_substream *substream)
797 struct snd_soc_pcm_runtime *rtd = substream->private_data;
798 struct snd_soc_platform *platform = rtd->platform;
799 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
800 struct snd_soc_dai *codec_dai = rtd->codec_dai;
803 mutex_lock(&pcm_mutex);
805 if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) {
806 ret = rtd->dai_link->ops->prepare(substream);
808 printk(KERN_ERR "asoc: machine prepare error\n");
813 if (platform->driver->ops->prepare) {
814 ret = platform->driver->ops->prepare(substream);
816 printk(KERN_ERR "asoc: platform prepare error\n");
821 if (codec_dai->driver->ops->prepare) {
822 ret = codec_dai->driver->ops->prepare(substream, codec_dai);
824 printk(KERN_ERR "asoc: codec DAI prepare error\n");
829 if (cpu_dai->driver->ops->prepare) {
830 ret = cpu_dai->driver->ops->prepare(substream, cpu_dai);
832 printk(KERN_ERR "asoc: cpu DAI prepare error\n");
837 /* cancel any delayed stream shutdown that is pending */
838 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
839 codec_dai->pop_wait) {
840 codec_dai->pop_wait = 0;
841 cancel_delayed_work(&rtd->delayed_work);
844 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
845 snd_soc_dapm_stream_event(rtd,
846 codec_dai->driver->playback.stream_name,
847 SND_SOC_DAPM_STREAM_START);
849 snd_soc_dapm_stream_event(rtd,
850 codec_dai->driver->capture.stream_name,
851 SND_SOC_DAPM_STREAM_START);
853 snd_soc_dai_digital_mute(codec_dai, 0);
856 mutex_unlock(&pcm_mutex);
861 * Called by ALSA when the hardware params are set by application. This
862 * function can also be called multiple times and can allocate buffers
863 * (using snd_pcm_lib_* ). It's non-atomic.
865 static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
866 struct snd_pcm_hw_params *params)
868 struct snd_soc_pcm_runtime *rtd = substream->private_data;
869 struct snd_soc_platform *platform = rtd->platform;
870 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
871 struct snd_soc_dai *codec_dai = rtd->codec_dai;
874 mutex_lock(&pcm_mutex);
876 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) {
877 ret = rtd->dai_link->ops->hw_params(substream, params);
879 printk(KERN_ERR "asoc: machine hw_params failed\n");
884 if (codec_dai->driver->ops->hw_params) {
885 ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai);
887 printk(KERN_ERR "asoc: can't set codec %s hw params\n",
893 if (cpu_dai->driver->ops->hw_params) {
894 ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai);
896 printk(KERN_ERR "asoc: interface %s hw params failed\n",
902 if (platform->driver->ops->hw_params) {
903 ret = platform->driver->ops->hw_params(substream, params);
905 printk(KERN_ERR "asoc: platform %s hw params failed\n",
911 rtd->rate = params_rate(params);
914 mutex_unlock(&pcm_mutex);
918 if (cpu_dai->driver->ops->hw_free)
919 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
922 if (codec_dai->driver->ops->hw_free)
923 codec_dai->driver->ops->hw_free(substream, codec_dai);
926 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
927 rtd->dai_link->ops->hw_free(substream);
929 mutex_unlock(&pcm_mutex);
934 * Frees resources allocated by hw_params, can be called multiple times
936 static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
938 struct snd_soc_pcm_runtime *rtd = substream->private_data;
939 struct snd_soc_platform *platform = rtd->platform;
940 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
941 struct snd_soc_dai *codec_dai = rtd->codec_dai;
942 struct snd_soc_codec *codec = rtd->codec;
944 mutex_lock(&pcm_mutex);
946 /* apply codec digital mute */
948 snd_soc_dai_digital_mute(codec_dai, 1);
950 /* free any machine hw params */
951 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
952 rtd->dai_link->ops->hw_free(substream);
954 /* free any DMA resources */
955 if (platform->driver->ops->hw_free)
956 platform->driver->ops->hw_free(substream);
958 /* now free hw params for the DAIs */
959 if (codec_dai->driver->ops->hw_free)
960 codec_dai->driver->ops->hw_free(substream, codec_dai);
962 if (cpu_dai->driver->ops->hw_free)
963 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
965 mutex_unlock(&pcm_mutex);
969 static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
971 struct snd_soc_pcm_runtime *rtd = substream->private_data;
972 struct snd_soc_platform *platform = rtd->platform;
973 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
974 struct snd_soc_dai *codec_dai = rtd->codec_dai;
977 if (codec_dai->driver->ops->trigger) {
978 ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai);
983 if (platform->driver->ops->trigger) {
984 ret = platform->driver->ops->trigger(substream, cmd);
989 if (cpu_dai->driver->ops->trigger) {
990 ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai);
998 * soc level wrapper for pointer callback
999 * If cpu_dai, codec_dai, platform driver has the delay callback, than
1000 * the runtime->delay will be updated accordingly.
1002 static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
1004 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1005 struct snd_soc_platform *platform = rtd->platform;
1006 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1007 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1008 struct snd_pcm_runtime *runtime = substream->runtime;
1009 snd_pcm_uframes_t offset = 0;
1010 snd_pcm_sframes_t delay = 0;
1012 if (platform->driver->ops->pointer)
1013 offset = platform->driver->ops->pointer(substream);
1015 if (cpu_dai->driver->ops->delay)
1016 delay += cpu_dai->driver->ops->delay(substream, cpu_dai);
1018 if (codec_dai->driver->ops->delay)
1019 delay += codec_dai->driver->ops->delay(substream, codec_dai);
1021 if (platform->driver->delay)
1022 delay += platform->driver->delay(substream, codec_dai);
1024 runtime->delay = delay;
1029 /* ASoC PCM operations */
1030 static struct snd_pcm_ops soc_pcm_ops = {
1031 .open = soc_pcm_open,
1032 .close = soc_codec_close,
1033 .hw_params = soc_pcm_hw_params,
1034 .hw_free = soc_pcm_hw_free,
1035 .prepare = soc_pcm_prepare,
1036 .trigger = soc_pcm_trigger,
1037 .pointer = soc_pcm_pointer,
1040 #ifdef CONFIG_PM_SLEEP
1041 /* powers down audio subsystem for suspend */
1042 int snd_soc_suspend(struct device *dev)
1044 struct snd_soc_card *card = dev_get_drvdata(dev);
1045 struct snd_soc_codec *codec;
1048 /* If the initialization of this soc device failed, there is no codec
1049 * associated with it. Just bail out in this case.
1051 if (list_empty(&card->codec_dev_list))
1054 /* Due to the resume being scheduled into a workqueue we could
1055 * suspend before that's finished - wait for it to complete.
1057 snd_power_lock(card->snd_card);
1058 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
1059 snd_power_unlock(card->snd_card);
1061 /* we're going to block userspace touching us until resume completes */
1062 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
1064 /* mute any active DACs */
1065 for (i = 0; i < card->num_rtd; i++) {
1066 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
1067 struct snd_soc_dai_driver *drv = dai->driver;
1069 if (card->rtd[i].dai_link->ignore_suspend)
1072 if (drv->ops->digital_mute && dai->playback_active)
1073 drv->ops->digital_mute(dai, 1);
1076 /* suspend all pcms */
1077 for (i = 0; i < card->num_rtd; i++) {
1078 if (card->rtd[i].dai_link->ignore_suspend)
1081 snd_pcm_suspend_all(card->rtd[i].pcm);
1084 if (card->suspend_pre)
1085 card->suspend_pre(card);
1087 for (i = 0; i < card->num_rtd; i++) {
1088 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1089 struct snd_soc_platform *platform = card->rtd[i].platform;
1091 if (card->rtd[i].dai_link->ignore_suspend)
1094 if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
1095 cpu_dai->driver->suspend(cpu_dai);
1096 if (platform->driver->suspend && !platform->suspended) {
1097 platform->driver->suspend(cpu_dai);
1098 platform->suspended = 1;
1102 /* close any waiting streams and save state */
1103 for (i = 0; i < card->num_rtd; i++) {
1104 flush_delayed_work_sync(&card->rtd[i].delayed_work);
1105 card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
1108 for (i = 0; i < card->num_rtd; i++) {
1109 struct snd_soc_dai_driver *driver = card->rtd[i].codec_dai->driver;
1111 if (card->rtd[i].dai_link->ignore_suspend)
1114 if (driver->playback.stream_name != NULL)
1115 snd_soc_dapm_stream_event(&card->rtd[i], driver->playback.stream_name,
1116 SND_SOC_DAPM_STREAM_SUSPEND);
1118 if (driver->capture.stream_name != NULL)
1119 snd_soc_dapm_stream_event(&card->rtd[i], driver->capture.stream_name,
1120 SND_SOC_DAPM_STREAM_SUSPEND);
1123 /* suspend all CODECs */
1124 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
1125 /* If there are paths active then the CODEC will be held with
1126 * bias _ON and should not be suspended. */
1127 if (!codec->suspended && codec->driver->suspend) {
1128 switch (codec->dapm.bias_level) {
1129 case SND_SOC_BIAS_STANDBY:
1130 case SND_SOC_BIAS_OFF:
1131 codec->driver->suspend(codec, PMSG_SUSPEND);
1132 codec->suspended = 1;
1135 dev_dbg(codec->dev, "CODEC is on over suspend\n");
1141 for (i = 0; i < card->num_rtd; i++) {
1142 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1144 if (card->rtd[i].dai_link->ignore_suspend)
1147 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
1148 cpu_dai->driver->suspend(cpu_dai);
1151 if (card->suspend_post)
1152 card->suspend_post(card);
1156 EXPORT_SYMBOL_GPL(snd_soc_suspend);
1158 /* deferred resume work, so resume can complete before we finished
1159 * setting our codec back up, which can be very slow on I2C
1161 static void soc_resume_deferred(struct work_struct *work)
1163 struct snd_soc_card *card =
1164 container_of(work, struct snd_soc_card, deferred_resume_work);
1165 struct snd_soc_codec *codec;
1168 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
1169 * so userspace apps are blocked from touching us
1172 dev_dbg(card->dev, "starting resume work\n");
1174 /* Bring us up into D2 so that DAPM starts enabling things */
1175 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
1177 if (card->resume_pre)
1178 card->resume_pre(card);
1180 /* resume AC97 DAIs */
1181 for (i = 0; i < card->num_rtd; i++) {
1182 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1184 if (card->rtd[i].dai_link->ignore_suspend)
1187 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
1188 cpu_dai->driver->resume(cpu_dai);
1191 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
1192 /* If the CODEC was idle over suspend then it will have been
1193 * left with bias OFF or STANDBY and suspended so we must now
1194 * resume. Otherwise the suspend was suppressed.
1196 if (codec->driver->resume && codec->suspended) {
1197 switch (codec->dapm.bias_level) {
1198 case SND_SOC_BIAS_STANDBY:
1199 case SND_SOC_BIAS_OFF:
1200 codec->driver->resume(codec);
1201 codec->suspended = 0;
1204 dev_dbg(codec->dev, "CODEC was on over suspend\n");
1210 for (i = 0; i < card->num_rtd; i++) {
1211 struct snd_soc_dai_driver *driver = card->rtd[i].codec_dai->driver;
1213 if (card->rtd[i].dai_link->ignore_suspend)
1216 if (driver->playback.stream_name != NULL)
1217 snd_soc_dapm_stream_event(&card->rtd[i], driver->playback.stream_name,
1218 SND_SOC_DAPM_STREAM_RESUME);
1220 if (driver->capture.stream_name != NULL)
1221 snd_soc_dapm_stream_event(&card->rtd[i], driver->capture.stream_name,
1222 SND_SOC_DAPM_STREAM_RESUME);
1225 /* unmute any active DACs */
1226 for (i = 0; i < card->num_rtd; i++) {
1227 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
1228 struct snd_soc_dai_driver *drv = dai->driver;
1230 if (card->rtd[i].dai_link->ignore_suspend)
1233 if (drv->ops->digital_mute && dai->playback_active)
1234 drv->ops->digital_mute(dai, 0);
1237 for (i = 0; i < card->num_rtd; i++) {
1238 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1239 struct snd_soc_platform *platform = card->rtd[i].platform;
1241 if (card->rtd[i].dai_link->ignore_suspend)
1244 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
1245 cpu_dai->driver->resume(cpu_dai);
1246 if (platform->driver->resume && platform->suspended) {
1247 platform->driver->resume(cpu_dai);
1248 platform->suspended = 0;
1252 if (card->resume_post)
1253 card->resume_post(card);
1255 dev_dbg(card->dev, "resume work completed\n");
1257 /* userspace can access us now we are back as we were before */
1258 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
1261 /* powers up audio subsystem after a suspend */
1262 int snd_soc_resume(struct device *dev)
1264 struct snd_soc_card *card = dev_get_drvdata(dev);
1267 /* AC97 devices might have other drivers hanging off them so
1268 * need to resume immediately. Other drivers don't have that
1269 * problem and may take a substantial amount of time to resume
1270 * due to I/O costs and anti-pop so handle them out of line.
1272 for (i = 0; i < card->num_rtd; i++) {
1273 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1274 if (cpu_dai->driver->ac97_control) {
1275 dev_dbg(dev, "Resuming AC97 immediately\n");
1276 soc_resume_deferred(&card->deferred_resume_work);
1278 dev_dbg(dev, "Scheduling resume work\n");
1279 if (!schedule_work(&card->deferred_resume_work))
1280 dev_err(dev, "resume work item may be lost\n");
1286 EXPORT_SYMBOL_GPL(snd_soc_resume);
1288 #define snd_soc_suspend NULL
1289 #define snd_soc_resume NULL
1292 static struct snd_soc_dai_ops null_dai_ops = {
1295 static int soc_bind_dai_link(struct snd_soc_card *card, int num)
1297 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1298 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1299 struct snd_soc_codec *codec;
1300 struct snd_soc_platform *platform;
1301 struct snd_soc_dai *codec_dai, *cpu_dai;
1305 dev_dbg(card->dev, "binding %s at idx %d\n", dai_link->name, num);
1307 /* do we already have the CPU DAI for this link ? */
1311 /* no, then find CPU DAI from registered DAIs*/
1312 list_for_each_entry(cpu_dai, &dai_list, list) {
1313 if (!strcmp(cpu_dai->name, dai_link->cpu_dai_name)) {
1315 if (!try_module_get(cpu_dai->dev->driver->owner))
1318 rtd->cpu_dai = cpu_dai;
1322 dev_dbg(card->dev, "CPU DAI %s not registered\n",
1323 dai_link->cpu_dai_name);
1326 /* do we already have the CODEC for this link ? */
1331 /* no, then find CODEC from registered CODECs*/
1332 list_for_each_entry(codec, &codec_list, list) {
1333 if (!strcmp(codec->name, dai_link->codec_name)) {
1336 /* CODEC found, so find CODEC DAI from registered DAIs from this CODEC*/
1337 list_for_each_entry(codec_dai, &dai_list, list) {
1338 if (codec->dev == codec_dai->dev &&
1339 !strcmp(codec_dai->name, dai_link->codec_dai_name)) {
1340 rtd->codec_dai = codec_dai;
1344 dev_dbg(card->dev, "CODEC DAI %s not registered\n",
1345 dai_link->codec_dai_name);
1350 dev_dbg(card->dev, "CODEC %s not registered\n",
1351 dai_link->codec_name);
1354 /* do we already have the CODEC DAI for this link ? */
1355 if (rtd->platform) {
1358 /* no, then find CPU DAI from registered DAIs*/
1359 list_for_each_entry(platform, &platform_list, list) {
1360 if (!strcmp(platform->name, dai_link->platform_name)) {
1361 rtd->platform = platform;
1366 dev_dbg(card->dev, "platform %s not registered\n",
1367 dai_link->platform_name);
1371 /* mark rtd as complete if we found all 4 of our client devices */
1372 if (rtd->codec && rtd->codec_dai && rtd->platform && rtd->cpu_dai) {
1379 static void soc_remove_codec(struct snd_soc_codec *codec)
1383 if (codec->driver->remove) {
1384 err = codec->driver->remove(codec);
1387 "asoc: failed to remove %s: %d\n",
1391 /* Make sure all DAPM widgets are freed */
1392 snd_soc_dapm_free(&codec->dapm);
1394 soc_cleanup_codec_debugfs(codec);
1396 list_del(&codec->card_list);
1397 module_put(codec->dev->driver->owner);
1400 static void soc_remove_dai_link(struct snd_soc_card *card, int num)
1402 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1403 struct snd_soc_codec *codec = rtd->codec;
1404 struct snd_soc_platform *platform = rtd->platform;
1405 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
1408 /* unregister the rtd device */
1409 if (rtd->dev_registered) {
1410 device_remove_file(&rtd->dev, &dev_attr_pmdown_time);
1411 device_remove_file(&rtd->dev, &dev_attr_codec_reg);
1412 device_unregister(&rtd->dev);
1413 rtd->dev_registered = 0;
1416 /* remove the CODEC DAI */
1417 if (codec_dai && codec_dai->probed) {
1418 if (codec_dai->driver->remove) {
1419 err = codec_dai->driver->remove(codec_dai);
1421 printk(KERN_ERR "asoc: failed to remove %s\n", codec_dai->name);
1423 codec_dai->probed = 0;
1424 list_del(&codec_dai->card_list);
1427 /* remove the platform */
1428 if (platform && platform->probed) {
1429 if (platform->driver->remove) {
1430 err = platform->driver->remove(platform);
1432 printk(KERN_ERR "asoc: failed to remove %s\n", platform->name);
1434 platform->probed = 0;
1435 list_del(&platform->card_list);
1436 module_put(platform->dev->driver->owner);
1439 /* remove the CODEC */
1440 if (codec && codec->probed)
1441 soc_remove_codec(codec);
1443 /* remove the cpu_dai */
1444 if (cpu_dai && cpu_dai->probed) {
1445 if (cpu_dai->driver->remove) {
1446 err = cpu_dai->driver->remove(cpu_dai);
1448 printk(KERN_ERR "asoc: failed to remove %s\n", cpu_dai->name);
1450 cpu_dai->probed = 0;
1451 list_del(&cpu_dai->card_list);
1452 module_put(cpu_dai->dev->driver->owner);
1456 static void soc_set_name_prefix(struct snd_soc_card *card,
1457 struct snd_soc_codec *codec)
1461 if (card->codec_conf == NULL)
1464 for (i = 0; i < card->num_configs; i++) {
1465 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1466 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
1467 codec->name_prefix = map->name_prefix;
1473 static int soc_probe_codec(struct snd_soc_card *card,
1474 struct snd_soc_codec *codec)
1477 const struct snd_soc_codec_driver *driver = codec->driver;
1480 codec->dapm.card = card;
1481 soc_set_name_prefix(card, codec);
1483 if (!try_module_get(codec->dev->driver->owner))
1486 if (driver->probe) {
1487 ret = driver->probe(codec);
1490 "asoc: failed to probe CODEC %s: %d\n",
1496 if (driver->dapm_widgets)
1497 snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
1498 driver->num_dapm_widgets);
1499 if (driver->dapm_routes)
1500 snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
1501 driver->num_dapm_routes);
1503 soc_init_codec_debugfs(codec);
1505 /* mark codec as probed and add to card codec list */
1507 list_add(&codec->card_list, &card->codec_dev_list);
1508 list_add(&codec->dapm.list, &card->dapm_list);
1513 module_put(codec->dev->driver->owner);
1518 static void rtd_release(struct device *dev) {}
1520 static int soc_post_component_init(struct snd_soc_card *card,
1521 struct snd_soc_codec *codec,
1522 int num, int dailess)
1524 struct snd_soc_dai_link *dai_link = NULL;
1525 struct snd_soc_aux_dev *aux_dev = NULL;
1526 struct snd_soc_pcm_runtime *rtd;
1527 const char *temp, *name;
1531 dai_link = &card->dai_link[num];
1532 rtd = &card->rtd[num];
1533 name = dai_link->name;
1535 aux_dev = &card->aux_dev[num];
1536 rtd = &card->rtd_aux[num];
1537 name = aux_dev->name;
1541 /* machine controls, routes and widgets are not prefixed */
1542 temp = codec->name_prefix;
1543 codec->name_prefix = NULL;
1545 /* do machine specific initialization */
1546 if (!dailess && dai_link->init)
1547 ret = dai_link->init(rtd);
1548 else if (dailess && aux_dev->init)
1549 ret = aux_dev->init(&codec->dapm);
1551 dev_err(card->dev, "asoc: failed to init %s: %d\n", name, ret);
1554 codec->name_prefix = temp;
1556 /* Make sure all DAPM widgets are instantiated */
1557 snd_soc_dapm_new_widgets(&codec->dapm);
1559 /* register the rtd device */
1561 rtd->dev.parent = card->dev;
1562 rtd->dev.release = rtd_release;
1563 rtd->dev.init_name = name;
1564 ret = device_register(&rtd->dev);
1567 "asoc: failed to register runtime device: %d\n", ret);
1570 rtd->dev_registered = 1;
1572 /* add DAPM sysfs entries for this codec */
1573 ret = snd_soc_dapm_sys_add(&rtd->dev);
1576 "asoc: failed to add codec dapm sysfs entries: %d\n",
1579 /* add codec sysfs entries */
1580 ret = device_create_file(&rtd->dev, &dev_attr_codec_reg);
1583 "asoc: failed to add codec sysfs files: %d\n", ret);
1588 static int soc_probe_dai_link(struct snd_soc_card *card, int num)
1590 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1591 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1592 struct snd_soc_codec *codec = rtd->codec;
1593 struct snd_soc_platform *platform = rtd->platform;
1594 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
1597 dev_dbg(card->dev, "probe %s dai link %d\n", card->name, num);
1599 /* config components */
1600 codec_dai->codec = codec;
1601 cpu_dai->platform = platform;
1602 codec_dai->card = card;
1603 cpu_dai->card = card;
1605 /* set default power off timeout */
1606 rtd->pmdown_time = pmdown_time;
1608 /* probe the cpu_dai */
1609 if (!cpu_dai->probed) {
1610 if (cpu_dai->driver->probe) {
1611 ret = cpu_dai->driver->probe(cpu_dai);
1613 printk(KERN_ERR "asoc: failed to probe CPU DAI %s\n",
1618 cpu_dai->probed = 1;
1619 /* mark cpu_dai as probed and add to card cpu_dai list */
1620 list_add(&cpu_dai->card_list, &card->dai_dev_list);
1623 /* probe the CODEC */
1624 if (!codec->probed) {
1625 ret = soc_probe_codec(card, codec);
1630 /* probe the platform */
1631 if (!platform->probed) {
1632 if (!try_module_get(platform->dev->driver->owner))
1635 if (platform->driver->probe) {
1636 ret = platform->driver->probe(platform);
1638 printk(KERN_ERR "asoc: failed to probe platform %s\n",
1640 module_put(platform->dev->driver->owner);
1644 /* mark platform as probed and add to card platform list */
1645 platform->probed = 1;
1646 list_add(&platform->card_list, &card->platform_dev_list);
1649 /* probe the CODEC DAI */
1650 if (!codec_dai->probed) {
1651 if (codec_dai->driver->probe) {
1652 ret = codec_dai->driver->probe(codec_dai);
1654 printk(KERN_ERR "asoc: failed to probe CODEC DAI %s\n",
1660 /* mark cpu_dai as probed and add to card cpu_dai list */
1661 codec_dai->probed = 1;
1662 list_add(&codec_dai->card_list, &card->dai_dev_list);
1665 /* DAPM dai link stream work */
1666 INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
1668 ret = soc_post_component_init(card, codec, num, 0);
1672 ret = device_create_file(&rtd->dev, &dev_attr_pmdown_time);
1674 printk(KERN_WARNING "asoc: failed to add pmdown_time sysfs\n");
1676 /* create the pcm */
1677 ret = soc_new_pcm(rtd, num);
1679 printk(KERN_ERR "asoc: can't create pcm %s\n", dai_link->stream_name);
1683 /* add platform data for AC97 devices */
1684 if (rtd->codec_dai->driver->ac97_control)
1685 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1690 #ifdef CONFIG_SND_SOC_AC97_BUS
1691 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1695 /* Only instantiate AC97 if not already done by the adaptor
1696 * for the generic AC97 subsystem.
1698 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
1700 * It is possible that the AC97 device is already registered to
1701 * the device subsystem. This happens when the device is created
1702 * via snd_ac97_mixer(). Currently only SoC codec that does so
1703 * is the generic AC97 glue but others migh emerge.
1705 * In those cases we don't try to register the device again.
1707 if (!rtd->codec->ac97_created)
1710 ret = soc_ac97_dev_register(rtd->codec);
1712 printk(KERN_ERR "asoc: AC97 device register failed\n");
1716 rtd->codec->ac97_registered = 1;
1721 static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1723 if (codec->ac97_registered) {
1724 soc_ac97_dev_unregister(codec);
1725 codec->ac97_registered = 0;
1730 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1732 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1733 struct snd_soc_codec *codec;
1736 /* find CODEC from registered CODECs*/
1737 list_for_each_entry(codec, &codec_list, list) {
1738 if (!strcmp(codec->name, aux_dev->codec_name)) {
1739 if (codec->probed) {
1741 "asoc: codec already probed");
1748 /* codec not found */
1749 dev_err(card->dev, "asoc: codec %s not found", aux_dev->codec_name);
1753 ret = soc_probe_codec(card, codec);
1757 ret = soc_post_component_init(card, codec, num, 1);
1763 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1765 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1766 struct snd_soc_codec *codec = rtd->codec;
1768 /* unregister the rtd device */
1769 if (rtd->dev_registered) {
1770 device_remove_file(&rtd->dev, &dev_attr_codec_reg);
1771 device_unregister(&rtd->dev);
1772 rtd->dev_registered = 0;
1775 if (codec && codec->probed)
1776 soc_remove_codec(codec);
1779 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
1780 enum snd_soc_compress_type compress_type)
1784 if (codec->cache_init)
1787 /* override the compress_type if necessary */
1788 if (compress_type && codec->compress_type != compress_type)
1789 codec->compress_type = compress_type;
1790 ret = snd_soc_cache_init(codec);
1792 dev_err(codec->dev, "Failed to set cache compression type: %d\n",
1796 codec->cache_init = 1;
1800 static void snd_soc_instantiate_card(struct snd_soc_card *card)
1802 struct snd_soc_codec *codec;
1803 struct snd_soc_codec_conf *codec_conf;
1804 enum snd_soc_compress_type compress_type;
1807 mutex_lock(&card->mutex);
1809 if (card->instantiated) {
1810 mutex_unlock(&card->mutex);
1815 for (i = 0; i < card->num_links; i++)
1816 soc_bind_dai_link(card, i);
1818 /* bind completed ? */
1819 if (card->num_rtd != card->num_links) {
1820 mutex_unlock(&card->mutex);
1824 /* initialize the register cache for each available codec */
1825 list_for_each_entry(codec, &codec_list, list) {
1826 if (codec->cache_init)
1828 /* by default we don't override the compress_type */
1830 /* check to see if we need to override the compress_type */
1831 for (i = 0; i < card->num_configs; ++i) {
1832 codec_conf = &card->codec_conf[i];
1833 if (!strcmp(codec->name, codec_conf->dev_name)) {
1834 compress_type = codec_conf->compress_type;
1835 if (compress_type && compress_type
1836 != codec->compress_type)
1840 ret = snd_soc_init_codec_cache(codec, compress_type);
1842 mutex_unlock(&card->mutex);
1847 /* card bind complete so register a sound card */
1848 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1849 card->owner, 0, &card->snd_card);
1851 printk(KERN_ERR "asoc: can't create sound card for card %s\n",
1853 mutex_unlock(&card->mutex);
1856 card->snd_card->dev = card->dev;
1858 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1859 card->dapm.dev = card->dev;
1860 card->dapm.card = card;
1861 list_add(&card->dapm.list, &card->dapm_list);
1863 #ifdef CONFIG_PM_SLEEP
1864 /* deferred resume work */
1865 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1868 /* initialise the sound card only once */
1870 ret = card->probe(card);
1872 goto card_probe_error;
1875 for (i = 0; i < card->num_links; i++) {
1876 ret = soc_probe_dai_link(card, i);
1878 pr_err("asoc: failed to instantiate card %s: %d\n",
1884 for (i = 0; i < card->num_aux_devs; i++) {
1885 ret = soc_probe_aux_dev(card, i);
1887 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1889 goto probe_aux_dev_err;
1893 if (card->dapm_widgets)
1894 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1895 card->num_dapm_widgets);
1896 if (card->dapm_routes)
1897 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1898 card->num_dapm_routes);
1900 #ifdef CONFIG_DEBUG_FS
1901 card->dapm.debugfs_dapm = debugfs_create_dir("dapm",
1902 card->debugfs_card_root);
1903 if (!card->dapm.debugfs_dapm)
1905 "Failed to create card DAPM debugfs directory\n");
1907 snd_soc_dapm_debugfs_init(&card->dapm);
1910 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1912 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1915 if (card->late_probe) {
1916 ret = card->late_probe(card);
1918 dev_err(card->dev, "%s late_probe() failed: %d\n",
1920 goto probe_aux_dev_err;
1924 ret = snd_card_register(card->snd_card);
1926 printk(KERN_ERR "asoc: failed to register soundcard for %s\n", card->name);
1927 goto probe_aux_dev_err;
1930 #ifdef CONFIG_SND_SOC_AC97_BUS
1931 /* register any AC97 codecs */
1932 for (i = 0; i < card->num_rtd; i++) {
1933 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1935 printk(KERN_ERR "asoc: failed to register AC97 %s\n", card->name);
1937 soc_unregister_ac97_dai_link(card->rtd[i].codec);
1938 goto probe_aux_dev_err;
1943 card->instantiated = 1;
1944 mutex_unlock(&card->mutex);
1948 for (i = 0; i < card->num_aux_devs; i++)
1949 soc_remove_aux_dev(card, i);
1952 for (i = 0; i < card->num_links; i++)
1953 soc_remove_dai_link(card, i);
1959 snd_card_free(card->snd_card);
1961 mutex_unlock(&card->mutex);
1965 * Attempt to initialise any uninitialised cards. Must be called with
1968 static void snd_soc_instantiate_cards(void)
1970 struct snd_soc_card *card;
1971 list_for_each_entry(card, &card_list, list)
1972 snd_soc_instantiate_card(card);
1975 /* probes a new socdev */
1976 static int soc_probe(struct platform_device *pdev)
1978 struct snd_soc_card *card = platform_get_drvdata(pdev);
1982 * no card, so machine driver should be registering card
1983 * we should not be here in that case so ret error
1988 /* Bodge while we unpick instantiation */
1989 card->dev = &pdev->dev;
1991 ret = snd_soc_register_card(card);
1993 dev_err(&pdev->dev, "Failed to register card\n");
2000 static int soc_cleanup_card_resources(struct snd_soc_card *card)
2004 /* make sure any delayed work runs */
2005 for (i = 0; i < card->num_rtd; i++) {
2006 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
2007 flush_delayed_work_sync(&rtd->delayed_work);
2010 /* remove auxiliary devices */
2011 for (i = 0; i < card->num_aux_devs; i++)
2012 soc_remove_aux_dev(card, i);
2014 /* remove and free each DAI */
2015 for (i = 0; i < card->num_rtd; i++)
2016 soc_remove_dai_link(card, i);
2018 soc_cleanup_card_debugfs(card);
2020 /* remove the card */
2025 snd_card_free(card->snd_card);
2030 /* removes a socdev */
2031 static int soc_remove(struct platform_device *pdev)
2033 struct snd_soc_card *card = platform_get_drvdata(pdev);
2035 snd_soc_unregister_card(card);
2039 int snd_soc_poweroff(struct device *dev)
2041 struct snd_soc_card *card = dev_get_drvdata(dev);
2044 if (!card->instantiated)
2047 /* Flush out pmdown_time work - we actually do want to run it
2048 * now, we're shutting down so no imminent restart. */
2049 for (i = 0; i < card->num_rtd; i++) {
2050 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
2051 flush_delayed_work_sync(&rtd->delayed_work);
2054 snd_soc_dapm_shutdown(card);
2058 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
2060 const struct dev_pm_ops snd_soc_pm_ops = {
2061 .suspend = snd_soc_suspend,
2062 .resume = snd_soc_resume,
2063 .poweroff = snd_soc_poweroff,
2066 /* ASoC platform driver */
2067 static struct platform_driver soc_driver = {
2069 .name = "soc-audio",
2070 .owner = THIS_MODULE,
2071 .pm = &snd_soc_pm_ops,
2074 .remove = soc_remove,
2077 /* create a new pcm */
2078 static int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
2080 struct snd_soc_codec *codec = rtd->codec;
2081 struct snd_soc_platform *platform = rtd->platform;
2082 struct snd_soc_dai *codec_dai = rtd->codec_dai;
2083 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2084 struct snd_pcm *pcm;
2086 int ret = 0, playback = 0, capture = 0;
2088 /* check client and interface hw capabilities */
2089 snprintf(new_name, sizeof(new_name), "%s %s-%d",
2090 rtd->dai_link->stream_name, codec_dai->name, num);
2092 if (codec_dai->driver->playback.channels_min)
2094 if (codec_dai->driver->capture.channels_min)
2097 dev_dbg(rtd->card->dev, "registered pcm #%d %s\n",num,new_name);
2098 ret = snd_pcm_new(rtd->card->snd_card, new_name,
2099 num, playback, capture, &pcm);
2101 printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name);
2106 pcm->private_data = rtd;
2107 soc_pcm_ops.mmap = platform->driver->ops->mmap;
2108 soc_pcm_ops.pointer = platform->driver->ops->pointer;
2109 soc_pcm_ops.ioctl = platform->driver->ops->ioctl;
2110 soc_pcm_ops.copy = platform->driver->ops->copy;
2111 soc_pcm_ops.silence = platform->driver->ops->silence;
2112 soc_pcm_ops.ack = platform->driver->ops->ack;
2113 soc_pcm_ops.page = platform->driver->ops->page;
2116 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops);
2119 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops);
2121 ret = platform->driver->pcm_new(rtd->card->snd_card, codec_dai, pcm);
2123 printk(KERN_ERR "asoc: platform pcm constructor failed\n");
2127 pcm->private_free = platform->driver->pcm_free;
2128 printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name,
2134 * snd_soc_codec_volatile_register: Report if a register is volatile.
2136 * @codec: CODEC to query.
2137 * @reg: Register to query.
2139 * Boolean function indiciating if a CODEC register is volatile.
2141 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
2144 if (codec->volatile_register)
2145 return codec->volatile_register(codec, reg);
2149 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
2152 * snd_soc_new_ac97_codec - initailise AC97 device
2153 * @codec: audio codec
2154 * @ops: AC97 bus operations
2155 * @num: AC97 codec number
2157 * Initialises AC97 codec resources for use by ad-hoc devices only.
2159 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
2160 struct snd_ac97_bus_ops *ops, int num)
2162 mutex_lock(&codec->mutex);
2164 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2165 if (codec->ac97 == NULL) {
2166 mutex_unlock(&codec->mutex);
2170 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
2171 if (codec->ac97->bus == NULL) {
2174 mutex_unlock(&codec->mutex);
2178 codec->ac97->bus->ops = ops;
2179 codec->ac97->num = num;
2182 * Mark the AC97 device to be created by us. This way we ensure that the
2183 * device will be registered with the device subsystem later on.
2185 codec->ac97_created = 1;
2187 mutex_unlock(&codec->mutex);
2190 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
2193 * snd_soc_free_ac97_codec - free AC97 codec device
2194 * @codec: audio codec
2196 * Frees AC97 codec device resources.
2198 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
2200 mutex_lock(&codec->mutex);
2201 #ifdef CONFIG_SND_SOC_AC97_BUS
2202 soc_unregister_ac97_dai_link(codec);
2204 kfree(codec->ac97->bus);
2207 codec->ac97_created = 0;
2208 mutex_unlock(&codec->mutex);
2210 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
2212 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
2216 ret = codec->read(codec, reg);
2217 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
2218 trace_snd_soc_reg_read(codec, reg, ret);
2222 EXPORT_SYMBOL_GPL(snd_soc_read);
2224 unsigned int snd_soc_write(struct snd_soc_codec *codec,
2225 unsigned int reg, unsigned int val)
2227 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
2228 trace_snd_soc_reg_write(codec, reg, val);
2229 return codec->write(codec, reg, val);
2231 EXPORT_SYMBOL_GPL(snd_soc_write);
2234 * snd_soc_update_bits - update codec register bits
2235 * @codec: audio codec
2236 * @reg: codec register
2237 * @mask: register mask
2240 * Writes new register value.
2242 * Returns 1 for change, 0 for no change, or negative error code.
2244 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
2245 unsigned int mask, unsigned int value)
2248 unsigned int old, new;
2251 ret = snd_soc_read(codec, reg);
2256 new = (old & ~mask) | value;
2257 change = old != new;
2259 ret = snd_soc_write(codec, reg, new);
2266 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
2269 * snd_soc_update_bits_locked - update codec register bits
2270 * @codec: audio codec
2271 * @reg: codec register
2272 * @mask: register mask
2275 * Writes new register value, and takes the codec mutex.
2277 * Returns 1 for change else 0.
2279 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
2280 unsigned short reg, unsigned int mask,
2285 mutex_lock(&codec->mutex);
2286 change = snd_soc_update_bits(codec, reg, mask, value);
2287 mutex_unlock(&codec->mutex);
2291 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
2294 * snd_soc_test_bits - test register for change
2295 * @codec: audio codec
2296 * @reg: codec register
2297 * @mask: register mask
2300 * Tests a register with a new value and checks if the new value is
2301 * different from the old value.
2303 * Returns 1 for change else 0.
2305 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
2306 unsigned int mask, unsigned int value)
2309 unsigned int old, new;
2311 old = snd_soc_read(codec, reg);
2312 new = (old & ~mask) | value;
2313 change = old != new;
2317 EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2320 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2321 * @substream: the pcm substream
2322 * @hw: the hardware parameters
2324 * Sets the substream runtime hardware parameters.
2326 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
2327 const struct snd_pcm_hardware *hw)
2329 struct snd_pcm_runtime *runtime = substream->runtime;
2330 runtime->hw.info = hw->info;
2331 runtime->hw.formats = hw->formats;
2332 runtime->hw.period_bytes_min = hw->period_bytes_min;
2333 runtime->hw.period_bytes_max = hw->period_bytes_max;
2334 runtime->hw.periods_min = hw->periods_min;
2335 runtime->hw.periods_max = hw->periods_max;
2336 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
2337 runtime->hw.fifo_size = hw->fifo_size;
2340 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
2343 * snd_soc_cnew - create new control
2344 * @_template: control template
2345 * @data: control private data
2346 * @long_name: control long name
2347 * @prefix: control name prefix
2349 * Create a new mixer control from a template control.
2351 * Returns 0 for success, else error.
2353 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2354 void *data, char *long_name,
2357 struct snd_kcontrol_new template;
2358 struct snd_kcontrol *kcontrol;
2362 memcpy(&template, _template, sizeof(template));
2366 long_name = template.name;
2369 name_len = strlen(long_name) + strlen(prefix) + 2;
2370 name = kmalloc(name_len, GFP_ATOMIC);
2374 snprintf(name, name_len, "%s %s", prefix, long_name);
2376 template.name = name;
2378 template.name = long_name;
2381 kcontrol = snd_ctl_new1(&template, data);
2387 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2390 * snd_soc_add_controls - add an array of controls to a codec.
2391 * Convienience function to add a list of controls. Many codecs were
2392 * duplicating this code.
2394 * @codec: codec to add controls to
2395 * @controls: array of controls to add
2396 * @num_controls: number of elements in the array
2398 * Return 0 for success, else error.
2400 int snd_soc_add_controls(struct snd_soc_codec *codec,
2401 const struct snd_kcontrol_new *controls, int num_controls)
2403 struct snd_card *card = codec->card->snd_card;
2406 for (i = 0; i < num_controls; i++) {
2407 const struct snd_kcontrol_new *control = &controls[i];
2408 err = snd_ctl_add(card, snd_soc_cnew(control, codec,
2410 codec->name_prefix));
2412 dev_err(codec->dev, "%s: Failed to add %s: %d\n",
2413 codec->name, control->name, err);
2420 EXPORT_SYMBOL_GPL(snd_soc_add_controls);
2423 * snd_soc_info_enum_double - enumerated double mixer info callback
2424 * @kcontrol: mixer control
2425 * @uinfo: control element information
2427 * Callback to provide information about a double enumerated
2430 * Returns 0 for success.
2432 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2433 struct snd_ctl_elem_info *uinfo)
2435 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2437 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2438 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2439 uinfo->value.enumerated.items = e->max;
2441 if (uinfo->value.enumerated.item > e->max - 1)
2442 uinfo->value.enumerated.item = e->max - 1;
2443 strcpy(uinfo->value.enumerated.name,
2444 e->texts[uinfo->value.enumerated.item]);
2447 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2450 * snd_soc_get_enum_double - enumerated double mixer get callback
2451 * @kcontrol: mixer control
2452 * @ucontrol: control element information
2454 * Callback to get the value of a double enumerated mixer.
2456 * Returns 0 for success.
2458 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2459 struct snd_ctl_elem_value *ucontrol)
2461 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2462 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2463 unsigned int val, bitmask;
2465 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
2467 val = snd_soc_read(codec, e->reg);
2468 ucontrol->value.enumerated.item[0]
2469 = (val >> e->shift_l) & (bitmask - 1);
2470 if (e->shift_l != e->shift_r)
2471 ucontrol->value.enumerated.item[1] =
2472 (val >> e->shift_r) & (bitmask - 1);
2476 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2479 * snd_soc_put_enum_double - enumerated double mixer put callback
2480 * @kcontrol: mixer control
2481 * @ucontrol: control element information
2483 * Callback to set the value of a double enumerated mixer.
2485 * Returns 0 for success.
2487 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2488 struct snd_ctl_elem_value *ucontrol)
2490 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2491 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2493 unsigned int mask, bitmask;
2495 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
2497 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2499 val = ucontrol->value.enumerated.item[0] << e->shift_l;
2500 mask = (bitmask - 1) << e->shift_l;
2501 if (e->shift_l != e->shift_r) {
2502 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2504 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2505 mask |= (bitmask - 1) << e->shift_r;
2508 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2510 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2513 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2514 * @kcontrol: mixer control
2515 * @ucontrol: control element information
2517 * Callback to get the value of a double semi enumerated mixer.
2519 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2520 * used for handling bitfield coded enumeration for example.
2522 * Returns 0 for success.
2524 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
2525 struct snd_ctl_elem_value *ucontrol)
2527 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2528 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2529 unsigned int reg_val, val, mux;
2531 reg_val = snd_soc_read(codec, e->reg);
2532 val = (reg_val >> e->shift_l) & e->mask;
2533 for (mux = 0; mux < e->max; mux++) {
2534 if (val == e->values[mux])
2537 ucontrol->value.enumerated.item[0] = mux;
2538 if (e->shift_l != e->shift_r) {
2539 val = (reg_val >> e->shift_r) & e->mask;
2540 for (mux = 0; mux < e->max; mux++) {
2541 if (val == e->values[mux])
2544 ucontrol->value.enumerated.item[1] = mux;
2549 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
2552 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2553 * @kcontrol: mixer control
2554 * @ucontrol: control element information
2556 * Callback to set the value of a double semi enumerated mixer.
2558 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2559 * used for handling bitfield coded enumeration for example.
2561 * Returns 0 for success.
2563 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
2564 struct snd_ctl_elem_value *ucontrol)
2566 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2567 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2571 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2573 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2574 mask = e->mask << e->shift_l;
2575 if (e->shift_l != e->shift_r) {
2576 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2578 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2579 mask |= e->mask << e->shift_r;
2582 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2584 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
2587 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2588 * @kcontrol: mixer control
2589 * @uinfo: control element information
2591 * Callback to provide information about an external enumerated
2594 * Returns 0 for success.
2596 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
2597 struct snd_ctl_elem_info *uinfo)
2599 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2601 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2603 uinfo->value.enumerated.items = e->max;
2605 if (uinfo->value.enumerated.item > e->max - 1)
2606 uinfo->value.enumerated.item = e->max - 1;
2607 strcpy(uinfo->value.enumerated.name,
2608 e->texts[uinfo->value.enumerated.item]);
2611 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);
2614 * snd_soc_info_volsw_ext - external single mixer info callback
2615 * @kcontrol: mixer control
2616 * @uinfo: control element information
2618 * Callback to provide information about a single external mixer control.
2620 * Returns 0 for success.
2622 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
2623 struct snd_ctl_elem_info *uinfo)
2625 int max = kcontrol->private_value;
2627 if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
2628 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2630 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2633 uinfo->value.integer.min = 0;
2634 uinfo->value.integer.max = max;
2637 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);
2640 * snd_soc_info_volsw - single mixer info callback
2641 * @kcontrol: mixer control
2642 * @uinfo: control element information
2644 * Callback to provide information about a single mixer control.
2646 * Returns 0 for success.
2648 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2649 struct snd_ctl_elem_info *uinfo)
2651 struct soc_mixer_control *mc =
2652 (struct soc_mixer_control *)kcontrol->private_value;
2654 unsigned int shift = mc->shift;
2655 unsigned int rshift = mc->rshift;
2657 if (!mc->platform_max)
2658 mc->platform_max = mc->max;
2659 platform_max = mc->platform_max;
2661 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2662 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2664 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2666 uinfo->count = shift == rshift ? 1 : 2;
2667 uinfo->value.integer.min = 0;
2668 uinfo->value.integer.max = platform_max;
2671 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2674 * snd_soc_get_volsw - single mixer get callback
2675 * @kcontrol: mixer control
2676 * @ucontrol: control element information
2678 * Callback to get the value of a single mixer control.
2680 * Returns 0 for success.
2682 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2683 struct snd_ctl_elem_value *ucontrol)
2685 struct soc_mixer_control *mc =
2686 (struct soc_mixer_control *)kcontrol->private_value;
2687 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2688 unsigned int reg = mc->reg;
2689 unsigned int shift = mc->shift;
2690 unsigned int rshift = mc->rshift;
2692 unsigned int mask = (1 << fls(max)) - 1;
2693 unsigned int invert = mc->invert;
2695 ucontrol->value.integer.value[0] =
2696 (snd_soc_read(codec, reg) >> shift) & mask;
2697 if (shift != rshift)
2698 ucontrol->value.integer.value[1] =
2699 (snd_soc_read(codec, reg) >> rshift) & mask;
2701 ucontrol->value.integer.value[0] =
2702 max - ucontrol->value.integer.value[0];
2703 if (shift != rshift)
2704 ucontrol->value.integer.value[1] =
2705 max - ucontrol->value.integer.value[1];
2710 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2713 * snd_soc_put_volsw - single mixer put callback
2714 * @kcontrol: mixer control
2715 * @ucontrol: control element information
2717 * Callback to set the value of a single mixer control.
2719 * Returns 0 for success.
2721 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2722 struct snd_ctl_elem_value *ucontrol)
2724 struct soc_mixer_control *mc =
2725 (struct soc_mixer_control *)kcontrol->private_value;
2726 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2727 unsigned int reg = mc->reg;
2728 unsigned int shift = mc->shift;
2729 unsigned int rshift = mc->rshift;
2731 unsigned int mask = (1 << fls(max)) - 1;
2732 unsigned int invert = mc->invert;
2733 unsigned int val, val2, val_mask;
2735 val = (ucontrol->value.integer.value[0] & mask);
2738 val_mask = mask << shift;
2740 if (shift != rshift) {
2741 val2 = (ucontrol->value.integer.value[1] & mask);
2744 val_mask |= mask << rshift;
2745 val |= val2 << rshift;
2747 return snd_soc_update_bits_locked(codec, reg, val_mask, val);
2749 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2752 * snd_soc_info_volsw_2r - double mixer info callback
2753 * @kcontrol: mixer control
2754 * @uinfo: control element information
2756 * Callback to provide information about a double mixer control that
2757 * spans 2 codec registers.
2759 * Returns 0 for success.
2761 int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
2762 struct snd_ctl_elem_info *uinfo)
2764 struct soc_mixer_control *mc =
2765 (struct soc_mixer_control *)kcontrol->private_value;
2768 if (!mc->platform_max)
2769 mc->platform_max = mc->max;
2770 platform_max = mc->platform_max;
2772 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2773 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2775 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2778 uinfo->value.integer.min = 0;
2779 uinfo->value.integer.max = platform_max;
2782 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r);
2785 * snd_soc_get_volsw_2r - double mixer get callback
2786 * @kcontrol: mixer control
2787 * @ucontrol: control element information
2789 * Callback to get the value of a double mixer control that spans 2 registers.
2791 * Returns 0 for success.
2793 int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
2794 struct snd_ctl_elem_value *ucontrol)
2796 struct soc_mixer_control *mc =
2797 (struct soc_mixer_control *)kcontrol->private_value;
2798 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2799 unsigned int reg = mc->reg;
2800 unsigned int reg2 = mc->rreg;
2801 unsigned int shift = mc->shift;
2803 unsigned int mask = (1 << fls(max)) - 1;
2804 unsigned int invert = mc->invert;
2806 ucontrol->value.integer.value[0] =
2807 (snd_soc_read(codec, reg) >> shift) & mask;
2808 ucontrol->value.integer.value[1] =
2809 (snd_soc_read(codec, reg2) >> shift) & mask;
2811 ucontrol->value.integer.value[0] =
2812 max - ucontrol->value.integer.value[0];
2813 ucontrol->value.integer.value[1] =
2814 max - ucontrol->value.integer.value[1];
2819 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r);
2822 * snd_soc_put_volsw_2r - double mixer set callback
2823 * @kcontrol: mixer control
2824 * @ucontrol: control element information
2826 * Callback to set the value of a double mixer control that spans 2 registers.
2828 * Returns 0 for success.
2830 int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
2831 struct snd_ctl_elem_value *ucontrol)
2833 struct soc_mixer_control *mc =
2834 (struct soc_mixer_control *)kcontrol->private_value;
2835 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2836 unsigned int reg = mc->reg;
2837 unsigned int reg2 = mc->rreg;
2838 unsigned int shift = mc->shift;
2840 unsigned int mask = (1 << fls(max)) - 1;
2841 unsigned int invert = mc->invert;
2843 unsigned int val, val2, val_mask;
2845 val_mask = mask << shift;
2846 val = (ucontrol->value.integer.value[0] & mask);
2847 val2 = (ucontrol->value.integer.value[1] & mask);
2855 val2 = val2 << shift;
2857 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2861 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2864 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r);
2867 * snd_soc_info_volsw_s8 - signed mixer info callback
2868 * @kcontrol: mixer control
2869 * @uinfo: control element information
2871 * Callback to provide information about a signed mixer control.
2873 * Returns 0 for success.
2875 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2876 struct snd_ctl_elem_info *uinfo)
2878 struct soc_mixer_control *mc =
2879 (struct soc_mixer_control *)kcontrol->private_value;
2883 if (!mc->platform_max)
2884 mc->platform_max = mc->max;
2885 platform_max = mc->platform_max;
2887 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2889 uinfo->value.integer.min = 0;
2890 uinfo->value.integer.max = platform_max - min;
2893 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2896 * snd_soc_get_volsw_s8 - signed mixer get callback
2897 * @kcontrol: mixer control
2898 * @ucontrol: control element information
2900 * Callback to get the value of a signed mixer control.
2902 * Returns 0 for success.
2904 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2905 struct snd_ctl_elem_value *ucontrol)
2907 struct soc_mixer_control *mc =
2908 (struct soc_mixer_control *)kcontrol->private_value;
2909 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2910 unsigned int reg = mc->reg;
2912 int val = snd_soc_read(codec, reg);
2914 ucontrol->value.integer.value[0] =
2915 ((signed char)(val & 0xff))-min;
2916 ucontrol->value.integer.value[1] =
2917 ((signed char)((val >> 8) & 0xff))-min;
2920 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2923 * snd_soc_put_volsw_sgn - signed mixer put callback
2924 * @kcontrol: mixer control
2925 * @ucontrol: control element information
2927 * Callback to set the value of a signed mixer control.
2929 * Returns 0 for success.
2931 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2932 struct snd_ctl_elem_value *ucontrol)
2934 struct soc_mixer_control *mc =
2935 (struct soc_mixer_control *)kcontrol->private_value;
2936 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2937 unsigned int reg = mc->reg;
2941 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2942 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2944 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
2946 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2949 * snd_soc_limit_volume - Set new limit to an existing volume control.
2951 * @codec: where to look for the control
2952 * @name: Name of the control
2953 * @max: new maximum limit
2955 * Return 0 for success, else error.
2957 int snd_soc_limit_volume(struct snd_soc_codec *codec,
2958 const char *name, int max)
2960 struct snd_card *card = codec->card->snd_card;
2961 struct snd_kcontrol *kctl;
2962 struct soc_mixer_control *mc;
2966 /* Sanity check for name and max */
2967 if (unlikely(!name || max <= 0))
2970 list_for_each_entry(kctl, &card->controls, list) {
2971 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
2977 mc = (struct soc_mixer_control *)kctl->private_value;
2978 if (max <= mc->max) {
2979 mc->platform_max = max;
2985 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
2988 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2989 * mixer info callback
2990 * @kcontrol: mixer control
2991 * @uinfo: control element information
2993 * Returns 0 for success.
2995 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2996 struct snd_ctl_elem_info *uinfo)
2998 struct soc_mixer_control *mc =
2999 (struct soc_mixer_control *)kcontrol->private_value;
3003 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3005 uinfo->value.integer.min = 0;
3006 uinfo->value.integer.max = max-min;
3010 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx);
3013 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
3014 * mixer get callback
3015 * @kcontrol: mixer control
3016 * @uinfo: control element information
3018 * Returns 0 for success.
3020 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol *kcontrol,
3021 struct snd_ctl_elem_value *ucontrol)
3023 struct soc_mixer_control *mc =
3024 (struct soc_mixer_control *)kcontrol->private_value;
3025 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3026 unsigned int mask = (1<<mc->shift)-1;
3028 int val = snd_soc_read(codec, mc->reg) & mask;
3029 int valr = snd_soc_read(codec, mc->rreg) & mask;
3031 ucontrol->value.integer.value[0] = ((val & 0xff)-min) & mask;
3032 ucontrol->value.integer.value[1] = ((valr & 0xff)-min) & mask;
3035 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx);
3038 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
3039 * mixer put callback
3040 * @kcontrol: mixer control
3041 * @uinfo: control element information
3043 * Returns 0 for success.
3045 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol *kcontrol,
3046 struct snd_ctl_elem_value *ucontrol)
3048 struct soc_mixer_control *mc =
3049 (struct soc_mixer_control *)kcontrol->private_value;
3050 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3051 unsigned int mask = (1<<mc->shift)-1;
3054 unsigned int val, valr, oval, ovalr;
3056 val = ((ucontrol->value.integer.value[0]+min) & 0xff);
3058 valr = ((ucontrol->value.integer.value[1]+min) & 0xff);
3061 oval = snd_soc_read(codec, mc->reg) & mask;
3062 ovalr = snd_soc_read(codec, mc->rreg) & mask;
3066 ret = snd_soc_write(codec, mc->reg, val);
3070 if (ovalr != valr) {
3071 ret = snd_soc_write(codec, mc->rreg, valr);
3078 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx);
3081 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3083 * @clk_id: DAI specific clock ID
3084 * @freq: new clock frequency in Hz
3085 * @dir: new clock direction - input/output.
3087 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3089 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
3090 unsigned int freq, int dir)
3092 if (dai->driver && dai->driver->ops->set_sysclk)
3093 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
3094 else if (dai->codec && dai->codec->driver->set_sysclk)
3095 return dai->codec->driver->set_sysclk(dai->codec, clk_id,
3100 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
3103 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3105 * @clk_id: DAI specific clock ID
3106 * @freq: new clock frequency in Hz
3107 * @dir: new clock direction - input/output.
3109 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3111 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
3112 unsigned int freq, int dir)
3114 if (codec->driver->set_sysclk)
3115 return codec->driver->set_sysclk(codec, clk_id, freq, dir);
3119 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
3122 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3124 * @div_id: DAI specific clock divider ID
3125 * @div: new clock divisor.
3127 * Configures the clock dividers. This is used to derive the best DAI bit and
3128 * frame clocks from the system or master clock. It's best to set the DAI bit
3129 * and frame clocks as low as possible to save system power.
3131 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
3132 int div_id, int div)
3134 if (dai->driver && dai->driver->ops->set_clkdiv)
3135 return dai->driver->ops->set_clkdiv(dai, div_id, div);
3139 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
3142 * snd_soc_dai_set_pll - configure DAI PLL.
3144 * @pll_id: DAI specific PLL ID
3145 * @source: DAI specific source for the PLL
3146 * @freq_in: PLL input clock frequency in Hz
3147 * @freq_out: requested PLL output clock frequency in Hz
3149 * Configures and enables PLL to generate output clock based on input clock.
3151 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
3152 unsigned int freq_in, unsigned int freq_out)
3154 if (dai->driver && dai->driver->ops->set_pll)
3155 return dai->driver->ops->set_pll(dai, pll_id, source,
3157 else if (dai->codec && dai->codec->driver->set_pll)
3158 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
3163 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
3166 * snd_soc_codec_set_pll - configure codec PLL.
3168 * @pll_id: DAI specific PLL ID
3169 * @source: DAI specific source for the PLL
3170 * @freq_in: PLL input clock frequency in Hz
3171 * @freq_out: requested PLL output clock frequency in Hz
3173 * Configures and enables PLL to generate output clock based on input clock.
3175 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
3176 unsigned int freq_in, unsigned int freq_out)
3178 if (codec->driver->set_pll)
3179 return codec->driver->set_pll(codec, pll_id, source,
3184 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
3187 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3189 * @fmt: SND_SOC_DAIFMT_ format value.
3191 * Configures the DAI hardware format and clocking.
3193 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
3195 if (dai->driver && dai->driver->ops->set_fmt)
3196 return dai->driver->ops->set_fmt(dai, fmt);
3200 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
3203 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3205 * @tx_mask: bitmask representing active TX slots.
3206 * @rx_mask: bitmask representing active RX slots.
3207 * @slots: Number of slots in use.
3208 * @slot_width: Width in bits for each slot.
3210 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3213 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
3214 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3216 if (dai->driver && dai->driver->ops->set_tdm_slot)
3217 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3222 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3225 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3227 * @tx_num: how many TX channels
3228 * @tx_slot: pointer to an array which imply the TX slot number channel
3230 * @rx_num: how many RX channels
3231 * @rx_slot: pointer to an array which imply the RX slot number channel
3234 * configure the relationship between channel number and TDM slot number.
3236 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3237 unsigned int tx_num, unsigned int *tx_slot,
3238 unsigned int rx_num, unsigned int *rx_slot)
3240 if (dai->driver && dai->driver->ops->set_channel_map)
3241 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3246 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3249 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3251 * @tristate: tristate enable
3253 * Tristates the DAI so that others can use it.
3255 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3257 if (dai->driver && dai->driver->ops->set_tristate)
3258 return dai->driver->ops->set_tristate(dai, tristate);
3262 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3265 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3267 * @mute: mute enable
3269 * Mutes the DAI DAC.
3271 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
3273 if (dai->driver && dai->driver->ops->digital_mute)
3274 return dai->driver->ops->digital_mute(dai, mute);
3278 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3281 * snd_soc_register_card - Register a card with the ASoC core
3283 * @card: Card to register
3286 int snd_soc_register_card(struct snd_soc_card *card)
3290 if (!card->name || !card->dev)
3293 snd_soc_initialize_card_lists(card);
3295 soc_init_card_debugfs(card);
3297 card->rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime) *
3298 (card->num_links + card->num_aux_devs),
3300 if (card->rtd == NULL)
3302 card->rtd_aux = &card->rtd[card->num_links];
3304 for (i = 0; i < card->num_links; i++)
3305 card->rtd[i].dai_link = &card->dai_link[i];
3307 INIT_LIST_HEAD(&card->list);
3308 card->instantiated = 0;
3309 mutex_init(&card->mutex);
3311 mutex_lock(&client_mutex);
3312 list_add(&card->list, &card_list);
3313 snd_soc_instantiate_cards();
3314 mutex_unlock(&client_mutex);
3316 dev_dbg(card->dev, "Registered card '%s'\n", card->name);
3320 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3323 * snd_soc_unregister_card - Unregister a card with the ASoC core
3325 * @card: Card to unregister
3328 int snd_soc_unregister_card(struct snd_soc_card *card)
3330 if (card->instantiated)
3331 soc_cleanup_card_resources(card);
3332 mutex_lock(&client_mutex);
3333 list_del(&card->list);
3334 mutex_unlock(&client_mutex);
3335 dev_dbg(card->dev, "Unregistered card '%s'\n", card->name);
3339 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3342 * Simplify DAI link configuration by removing ".-1" from device names
3343 * and sanitizing names.
3345 static char *fmt_single_name(struct device *dev, int *id)
3347 char *found, name[NAME_SIZE];
3350 if (dev_name(dev) == NULL)
3353 strlcpy(name, dev_name(dev), NAME_SIZE);
3355 /* are we a "%s.%d" name (platform and SPI components) */
3356 found = strstr(name, dev->driver->name);
3359 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3361 /* discard ID from name if ID == -1 */
3363 found[strlen(dev->driver->name)] = '\0';
3367 /* I2C component devices are named "bus-addr" */
3368 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3369 char tmp[NAME_SIZE];
3371 /* create unique ID number from I2C addr and bus */
3372 *id = ((id1 & 0xffff) << 16) + id2;
3374 /* sanitize component name for DAI link creation */
3375 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3376 strlcpy(name, tmp, NAME_SIZE);
3381 return kstrdup(name, GFP_KERNEL);
3385 * Simplify DAI link naming for single devices with multiple DAIs by removing
3386 * any ".-1" and using the DAI name (instead of device name).
3388 static inline char *fmt_multiple_name(struct device *dev,
3389 struct snd_soc_dai_driver *dai_drv)
3391 if (dai_drv->name == NULL) {
3392 printk(KERN_ERR "asoc: error - multiple DAI %s registered with no name\n",
3397 return kstrdup(dai_drv->name, GFP_KERNEL);
3401 * snd_soc_register_dai - Register a DAI with the ASoC core
3403 * @dai: DAI to register
3405 int snd_soc_register_dai(struct device *dev,
3406 struct snd_soc_dai_driver *dai_drv)
3408 struct snd_soc_dai *dai;
3410 dev_dbg(dev, "dai register %s\n", dev_name(dev));
3412 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3416 /* create DAI component name */
3417 dai->name = fmt_single_name(dev, &dai->id);
3418 if (dai->name == NULL) {
3424 dai->driver = dai_drv;
3425 if (!dai->driver->ops)
3426 dai->driver->ops = &null_dai_ops;
3428 mutex_lock(&client_mutex);
3429 list_add(&dai->list, &dai_list);
3430 snd_soc_instantiate_cards();
3431 mutex_unlock(&client_mutex);
3433 pr_debug("Registered DAI '%s'\n", dai->name);
3437 EXPORT_SYMBOL_GPL(snd_soc_register_dai);
3440 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3442 * @dai: DAI to unregister
3444 void snd_soc_unregister_dai(struct device *dev)
3446 struct snd_soc_dai *dai;
3448 list_for_each_entry(dai, &dai_list, list) {
3449 if (dev == dai->dev)
3455 mutex_lock(&client_mutex);
3456 list_del(&dai->list);
3457 mutex_unlock(&client_mutex);
3459 pr_debug("Unregistered DAI '%s'\n", dai->name);
3463 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
3466 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3468 * @dai: Array of DAIs to register
3469 * @count: Number of DAIs
3471 int snd_soc_register_dais(struct device *dev,
3472 struct snd_soc_dai_driver *dai_drv, size_t count)
3474 struct snd_soc_dai *dai;
3477 dev_dbg(dev, "dai register %s #%Zu\n", dev_name(dev), count);
3479 for (i = 0; i < count; i++) {
3481 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3487 /* create DAI component name */
3488 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3489 if (dai->name == NULL) {
3496 dai->driver = &dai_drv[i];
3497 if (dai->driver->id)
3498 dai->id = dai->driver->id;
3501 if (!dai->driver->ops)
3502 dai->driver->ops = &null_dai_ops;
3504 mutex_lock(&client_mutex);
3505 list_add(&dai->list, &dai_list);
3506 mutex_unlock(&client_mutex);
3508 pr_debug("Registered DAI '%s'\n", dai->name);
3511 mutex_lock(&client_mutex);
3512 snd_soc_instantiate_cards();
3513 mutex_unlock(&client_mutex);
3517 for (i--; i >= 0; i--)
3518 snd_soc_unregister_dai(dev);
3522 EXPORT_SYMBOL_GPL(snd_soc_register_dais);
3525 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3527 * @dai: Array of DAIs to unregister
3528 * @count: Number of DAIs
3530 void snd_soc_unregister_dais(struct device *dev, size_t count)
3534 for (i = 0; i < count; i++)
3535 snd_soc_unregister_dai(dev);
3537 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
3540 * snd_soc_register_platform - Register a platform with the ASoC core
3542 * @platform: platform to register
3544 int snd_soc_register_platform(struct device *dev,
3545 struct snd_soc_platform_driver *platform_drv)
3547 struct snd_soc_platform *platform;
3549 dev_dbg(dev, "platform register %s\n", dev_name(dev));
3551 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3552 if (platform == NULL)
3555 /* create platform component name */
3556 platform->name = fmt_single_name(dev, &platform->id);
3557 if (platform->name == NULL) {
3562 platform->dev = dev;
3563 platform->driver = platform_drv;
3565 mutex_lock(&client_mutex);
3566 list_add(&platform->list, &platform_list);
3567 snd_soc_instantiate_cards();
3568 mutex_unlock(&client_mutex);
3570 pr_debug("Registered platform '%s'\n", platform->name);
3574 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3577 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3579 * @platform: platform to unregister
3581 void snd_soc_unregister_platform(struct device *dev)
3583 struct snd_soc_platform *platform;
3585 list_for_each_entry(platform, &platform_list, list) {
3586 if (dev == platform->dev)
3592 mutex_lock(&client_mutex);
3593 list_del(&platform->list);
3594 mutex_unlock(&client_mutex);
3596 pr_debug("Unregistered platform '%s'\n", platform->name);
3597 kfree(platform->name);
3600 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3602 static u64 codec_format_map[] = {
3603 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
3604 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
3605 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
3606 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
3607 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
3608 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
3609 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3610 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3611 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
3612 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
3613 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
3614 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
3615 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
3616 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
3617 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3618 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
3621 /* Fix up the DAI formats for endianness: codecs don't actually see
3622 * the endianness of the data but we're using the CPU format
3623 * definitions which do need to include endianness so we ensure that
3624 * codec DAIs always have both big and little endian variants set.
3626 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
3630 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
3631 if (stream->formats & codec_format_map[i])
3632 stream->formats |= codec_format_map[i];
3636 * snd_soc_register_codec - Register a codec with the ASoC core
3638 * @codec: codec to register
3640 int snd_soc_register_codec(struct device *dev,
3641 const struct snd_soc_codec_driver *codec_drv,
3642 struct snd_soc_dai_driver *dai_drv,
3646 struct snd_soc_codec *codec;
3649 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3651 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3655 /* create CODEC component name */
3656 codec->name = fmt_single_name(dev, &codec->id);
3657 if (codec->name == NULL) {
3662 if (codec_drv->compress_type)
3663 codec->compress_type = codec_drv->compress_type;
3665 codec->compress_type = SND_SOC_FLAT_COMPRESSION;
3667 codec->write = codec_drv->write;
3668 codec->read = codec_drv->read;
3669 codec->volatile_register = codec_drv->volatile_register;
3670 codec->readable_register = codec_drv->readable_register;
3671 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
3672 codec->dapm.dev = dev;
3673 codec->dapm.codec = codec;
3674 codec->dapm.seq_notifier = codec_drv->seq_notifier;
3676 codec->driver = codec_drv;
3677 codec->num_dai = num_dai;
3678 mutex_init(&codec->mutex);
3680 /* allocate CODEC register cache */
3681 if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
3682 reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
3683 codec->reg_size = reg_size;
3684 /* it is necessary to make a copy of the default register cache
3685 * because in the case of using a compression type that requires
3686 * the default register cache to be marked as __devinitconst the
3687 * kernel might have freed the array by the time we initialize
3690 if (codec_drv->reg_cache_default) {
3691 codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
3692 reg_size, GFP_KERNEL);
3693 if (!codec->reg_def_copy) {
3700 if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
3701 if (!codec->volatile_register)
3702 codec->volatile_register = snd_soc_default_volatile_register;
3703 if (!codec->readable_register)
3704 codec->readable_register = snd_soc_default_readable_register;
3707 for (i = 0; i < num_dai; i++) {
3708 fixup_codec_formats(&dai_drv[i].playback);
3709 fixup_codec_formats(&dai_drv[i].capture);
3712 /* register any DAIs */
3714 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
3719 mutex_lock(&client_mutex);
3720 list_add(&codec->list, &codec_list);
3721 snd_soc_instantiate_cards();
3722 mutex_unlock(&client_mutex);
3724 pr_debug("Registered codec '%s'\n", codec->name);
3728 kfree(codec->reg_def_copy);
3729 codec->reg_def_copy = NULL;
3734 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
3737 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3739 * @codec: codec to unregister
3741 void snd_soc_unregister_codec(struct device *dev)
3743 struct snd_soc_codec *codec;
3746 list_for_each_entry(codec, &codec_list, list) {
3747 if (dev == codec->dev)
3754 for (i = 0; i < codec->num_dai; i++)
3755 snd_soc_unregister_dai(dev);
3757 mutex_lock(&client_mutex);
3758 list_del(&codec->list);
3759 mutex_unlock(&client_mutex);
3761 pr_debug("Unregistered codec '%s'\n", codec->name);
3763 snd_soc_cache_exit(codec);
3764 kfree(codec->reg_def_copy);
3768 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
3770 static int __init snd_soc_init(void)
3772 #ifdef CONFIG_DEBUG_FS
3773 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
3774 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
3776 "ASoC: Failed to create debugfs directory\n");
3777 snd_soc_debugfs_root = NULL;
3780 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
3782 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3784 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
3786 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3788 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
3789 &platform_list_fops))
3790 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3793 return platform_driver_register(&soc_driver);
3795 module_init(snd_soc_init);
3797 static void __exit snd_soc_exit(void)
3799 #ifdef CONFIG_DEBUG_FS
3800 debugfs_remove_recursive(snd_soc_debugfs_root);
3802 platform_driver_unregister(&soc_driver);
3804 module_exit(snd_soc_exit);
3806 /* Module information */
3807 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3808 MODULE_DESCRIPTION("ALSA SoC Core");
3809 MODULE_LICENSE("GPL");
3810 MODULE_ALIAS("platform:soc-audio");