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![Bard liao](/assets/img/avatar_default.png)
commit a0a4bf57a9
("ASoC: core: delete component->card_list in soc_remove_component only")
was trying to fix a kernel oops when list_del was called twice without
re-init the list. Use list_del_init() can solve it, too. Besides, it
will be more readable if we cleanup all component related resource at
soc_cleanup_component().
Suggested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Bard liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20190918133131.15045-1-yung-chuan.liao@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
3497 lines
84 KiB
C
3497 lines
84 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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//
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// soc-core.c -- ALSA SoC Audio Layer
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//
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// Copyright 2005 Wolfson Microelectronics PLC.
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// Copyright 2005 Openedhand Ltd.
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// Copyright (C) 2010 Slimlogic Ltd.
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// Copyright (C) 2010 Texas Instruments Inc.
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//
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// Author: Liam Girdwood <lrg@slimlogic.co.uk>
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// with code, comments and ideas from :-
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// Richard Purdie <richard@openedhand.com>
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//
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// TODO:
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// o Add hw rules to enforce rates, etc.
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// o More testing with other codecs/machines.
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// o Add more codecs and platforms to ensure good API coverage.
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// o Support TDM on PCM and I2S
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <linux/bitops.h>
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#include <linux/debugfs.h>
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#include <linux/platform_device.h>
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#include <linux/pinctrl/consumer.h>
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#include <linux/ctype.h>
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#include <linux/slab.h>
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#include <linux/of.h>
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#include <linux/of_graph.h>
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#include <linux/dmi.h>
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#include <sound/core.h>
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#include <sound/jack.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/soc-dpcm.h>
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#include <sound/soc-topology.h>
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#include <sound/initval.h>
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#define CREATE_TRACE_POINTS
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#include <trace/events/asoc.h>
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#define NAME_SIZE 32
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#ifdef CONFIG_DEBUG_FS
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struct dentry *snd_soc_debugfs_root;
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EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
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#endif
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static DEFINE_MUTEX(client_mutex);
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static LIST_HEAD(component_list);
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static LIST_HEAD(unbind_card_list);
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#define for_each_component(component) \
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list_for_each_entry(component, &component_list, list)
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/*
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* This is used if driver don't need to have CPU/Codec/Platform
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* dai_link. see soc.h
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*/
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struct snd_soc_dai_link_component null_dailink_component[0];
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EXPORT_SYMBOL_GPL(null_dailink_component);
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/*
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* This is a timeout to do a DAPM powerdown after a stream is closed().
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* It can be used to eliminate pops between different playback streams, e.g.
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* between two audio tracks.
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*/
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static int pmdown_time = 5000;
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module_param(pmdown_time, int, 0);
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MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
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#ifdef CONFIG_DMI
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/*
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* If a DMI filed contain strings in this blacklist (e.g.
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* "Type2 - Board Manufacturer" or "Type1 - TBD by OEM"), it will be taken
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* as invalid and dropped when setting the card long name from DMI info.
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*/
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static const char * const dmi_blacklist[] = {
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"To be filled by OEM",
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"TBD by OEM",
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"Default String",
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"Board Manufacturer",
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"Board Vendor Name",
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"Board Product Name",
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NULL, /* terminator */
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};
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#endif
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static ssize_t pmdown_time_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
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return sprintf(buf, "%ld\n", rtd->pmdown_time);
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}
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static ssize_t pmdown_time_set(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
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int ret;
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ret = kstrtol(buf, 10, &rtd->pmdown_time);
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if (ret)
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return ret;
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return count;
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}
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static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
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static struct attribute *soc_dev_attrs[] = {
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&dev_attr_pmdown_time.attr,
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NULL
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};
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static umode_t soc_dev_attr_is_visible(struct kobject *kobj,
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struct attribute *attr, int idx)
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{
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struct device *dev = kobj_to_dev(kobj);
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struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
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if (attr == &dev_attr_pmdown_time.attr)
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return attr->mode; /* always visible */
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return rtd->num_codecs ? attr->mode : 0; /* enabled only with codec */
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}
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static const struct attribute_group soc_dapm_dev_group = {
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.attrs = soc_dapm_dev_attrs,
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.is_visible = soc_dev_attr_is_visible,
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};
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static const struct attribute_group soc_dev_group = {
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.attrs = soc_dev_attrs,
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.is_visible = soc_dev_attr_is_visible,
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};
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static const struct attribute_group *soc_dev_attr_groups[] = {
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&soc_dapm_dev_group,
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&soc_dev_group,
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NULL
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};
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#ifdef CONFIG_DEBUG_FS
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static void soc_init_component_debugfs(struct snd_soc_component *component)
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{
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if (!component->card->debugfs_card_root)
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return;
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if (component->debugfs_prefix) {
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char *name;
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name = kasprintf(GFP_KERNEL, "%s:%s",
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component->debugfs_prefix, component->name);
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if (name) {
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component->debugfs_root = debugfs_create_dir(name,
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component->card->debugfs_card_root);
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kfree(name);
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}
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} else {
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component->debugfs_root = debugfs_create_dir(component->name,
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component->card->debugfs_card_root);
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}
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snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component),
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component->debugfs_root);
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}
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static void soc_cleanup_component_debugfs(struct snd_soc_component *component)
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{
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if (!component->debugfs_root)
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return;
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debugfs_remove_recursive(component->debugfs_root);
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component->debugfs_root = NULL;
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}
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static int dai_list_show(struct seq_file *m, void *v)
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{
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struct snd_soc_component *component;
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struct snd_soc_dai *dai;
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mutex_lock(&client_mutex);
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for_each_component(component)
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for_each_component_dais(component, dai)
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seq_printf(m, "%s\n", dai->name);
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mutex_unlock(&client_mutex);
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(dai_list);
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static int component_list_show(struct seq_file *m, void *v)
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{
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struct snd_soc_component *component;
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mutex_lock(&client_mutex);
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for_each_component(component)
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seq_printf(m, "%s\n", component->name);
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mutex_unlock(&client_mutex);
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(component_list);
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static void soc_init_card_debugfs(struct snd_soc_card *card)
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{
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card->debugfs_card_root = debugfs_create_dir(card->name,
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snd_soc_debugfs_root);
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debugfs_create_u32("dapm_pop_time", 0644, card->debugfs_card_root,
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&card->pop_time);
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snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
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}
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static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
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{
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debugfs_remove_recursive(card->debugfs_card_root);
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card->debugfs_card_root = NULL;
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}
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static void snd_soc_debugfs_init(void)
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{
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snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
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debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
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&dai_list_fops);
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debugfs_create_file("components", 0444, snd_soc_debugfs_root, NULL,
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&component_list_fops);
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}
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static void snd_soc_debugfs_exit(void)
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{
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debugfs_remove_recursive(snd_soc_debugfs_root);
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}
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#else
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static inline void soc_init_component_debugfs(
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struct snd_soc_component *component)
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{
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}
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static inline void soc_cleanup_component_debugfs(
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struct snd_soc_component *component)
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{
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}
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static inline void soc_init_card_debugfs(struct snd_soc_card *card)
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{
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}
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static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
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{
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}
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static inline void snd_soc_debugfs_init(void)
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{
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}
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static inline void snd_soc_debugfs_exit(void)
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{
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}
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#endif
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static int snd_soc_rtdcom_add(struct snd_soc_pcm_runtime *rtd,
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struct snd_soc_component *component)
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{
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struct snd_soc_rtdcom_list *rtdcom;
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for_each_rtdcom(rtd, rtdcom) {
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/* already connected */
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if (rtdcom->component == component)
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return 0;
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}
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rtdcom = kmalloc(sizeof(*rtdcom), GFP_KERNEL);
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if (!rtdcom)
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return -ENOMEM;
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rtdcom->component = component;
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INIT_LIST_HEAD(&rtdcom->list);
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list_add_tail(&rtdcom->list, &rtd->component_list);
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return 0;
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}
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static void snd_soc_rtdcom_del_all(struct snd_soc_pcm_runtime *rtd)
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{
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struct snd_soc_rtdcom_list *rtdcom1, *rtdcom2;
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for_each_rtdcom_safe(rtd, rtdcom1, rtdcom2)
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kfree(rtdcom1);
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INIT_LIST_HEAD(&rtd->component_list);
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}
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struct snd_soc_component *snd_soc_rtdcom_lookup(struct snd_soc_pcm_runtime *rtd,
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const char *driver_name)
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{
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struct snd_soc_rtdcom_list *rtdcom;
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if (!driver_name)
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return NULL;
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/*
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* NOTE
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*
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* snd_soc_rtdcom_lookup() will find component from rtd by using
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* specified driver name.
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* But, if many components which have same driver name are connected
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* to 1 rtd, this function will return 1st found component.
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*/
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for_each_rtdcom(rtd, rtdcom) {
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const char *component_name = rtdcom->component->driver->name;
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if (!component_name)
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continue;
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if ((component_name == driver_name) ||
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strcmp(component_name, driver_name) == 0)
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return rtdcom->component;
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}
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return NULL;
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}
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EXPORT_SYMBOL_GPL(snd_soc_rtdcom_lookup);
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struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
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const char *dai_link, int stream)
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{
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struct snd_soc_pcm_runtime *rtd;
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for_each_card_rtds(card, rtd) {
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if (rtd->dai_link->no_pcm &&
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!strcmp(rtd->dai_link->name, dai_link))
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return rtd->pcm->streams[stream].substream;
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}
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dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link);
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return NULL;
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}
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EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);
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static const struct snd_soc_ops null_snd_soc_ops;
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static struct snd_soc_pcm_runtime *soc_new_pcm_runtime(
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struct snd_soc_card *card, struct snd_soc_dai_link *dai_link)
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{
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struct snd_soc_pcm_runtime *rtd;
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rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL);
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if (!rtd)
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return NULL;
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INIT_LIST_HEAD(&rtd->component_list);
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rtd->card = card;
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rtd->dai_link = dai_link;
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if (!rtd->dai_link->ops)
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rtd->dai_link->ops = &null_snd_soc_ops;
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rtd->codec_dais = kcalloc(dai_link->num_codecs,
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sizeof(struct snd_soc_dai *),
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GFP_KERNEL);
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if (!rtd->codec_dais) {
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kfree(rtd);
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return NULL;
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}
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return rtd;
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}
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static void soc_free_pcm_runtime(struct snd_soc_pcm_runtime *rtd)
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{
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kfree(rtd->codec_dais);
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snd_soc_rtdcom_del_all(rtd);
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kfree(rtd);
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}
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static void soc_add_pcm_runtime(struct snd_soc_card *card,
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struct snd_soc_pcm_runtime *rtd)
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{
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/* see for_each_card_rtds */
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list_add_tail(&rtd->list, &card->rtd_list);
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rtd->num = card->num_rtd;
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card->num_rtd++;
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}
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static void soc_remove_pcm_runtimes(struct snd_soc_card *card)
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{
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struct snd_soc_pcm_runtime *rtd, *_rtd;
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for_each_card_rtds_safe(card, rtd, _rtd) {
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list_del(&rtd->list);
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soc_free_pcm_runtime(rtd);
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}
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card->num_rtd = 0;
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}
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struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
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const char *dai_link)
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{
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struct snd_soc_pcm_runtime *rtd;
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for_each_card_rtds(card, rtd) {
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if (!strcmp(rtd->dai_link->name, dai_link))
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return rtd;
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}
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dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link);
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return NULL;
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}
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EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
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static void snd_soc_flush_all_delayed_work(struct snd_soc_card *card)
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{
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struct snd_soc_pcm_runtime *rtd;
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for_each_card_rtds(card, rtd)
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flush_delayed_work(&rtd->delayed_work);
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}
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#ifdef CONFIG_PM_SLEEP
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/* powers down audio subsystem for suspend */
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int snd_soc_suspend(struct device *dev)
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{
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struct snd_soc_card *card = dev_get_drvdata(dev);
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struct snd_soc_component *component;
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struct snd_soc_pcm_runtime *rtd;
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int i;
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/* If the card is not initialized yet there is nothing to do */
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if (!card->instantiated)
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return 0;
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/*
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* Due to the resume being scheduled into a workqueue we could
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* suspend before that's finished - wait for it to complete.
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*/
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snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
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/* we're going to block userspace touching us until resume completes */
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snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
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/* mute any active DACs */
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for_each_card_rtds(card, rtd) {
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struct snd_soc_dai *dai;
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if (rtd->dai_link->ignore_suspend)
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continue;
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for_each_rtd_codec_dai(rtd, i, dai) {
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if (dai->playback_active)
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snd_soc_dai_digital_mute(dai, 1,
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SNDRV_PCM_STREAM_PLAYBACK);
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}
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}
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/* suspend all pcms */
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for_each_card_rtds(card, rtd) {
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if (rtd->dai_link->ignore_suspend)
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continue;
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snd_pcm_suspend_all(rtd->pcm);
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}
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if (card->suspend_pre)
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card->suspend_pre(card);
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for_each_card_rtds(card, rtd) {
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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if (rtd->dai_link->ignore_suspend)
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continue;
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if (!cpu_dai->driver->bus_control)
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snd_soc_dai_suspend(cpu_dai);
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}
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/* close any waiting streams */
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snd_soc_flush_all_delayed_work(card);
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for_each_card_rtds(card, rtd) {
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if (rtd->dai_link->ignore_suspend)
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continue;
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snd_soc_dapm_stream_event(rtd,
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SNDRV_PCM_STREAM_PLAYBACK,
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SND_SOC_DAPM_STREAM_SUSPEND);
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snd_soc_dapm_stream_event(rtd,
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SNDRV_PCM_STREAM_CAPTURE,
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SND_SOC_DAPM_STREAM_SUSPEND);
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}
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/* Recheck all endpoints too, their state is affected by suspend */
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dapm_mark_endpoints_dirty(card);
|
|
snd_soc_dapm_sync(&card->dapm);
|
|
|
|
/* suspend all COMPONENTs */
|
|
for_each_card_components(card, component) {
|
|
struct snd_soc_dapm_context *dapm =
|
|
snd_soc_component_get_dapm(component);
|
|
|
|
/*
|
|
* If there are paths active then the COMPONENT will be held
|
|
* with bias _ON and should not be suspended.
|
|
*/
|
|
if (!snd_soc_component_is_suspended(component)) {
|
|
switch (snd_soc_dapm_get_bias_level(dapm)) {
|
|
case SND_SOC_BIAS_STANDBY:
|
|
/*
|
|
* If the COMPONENT is capable of idle
|
|
* bias off then being in STANDBY
|
|
* means it's doing something,
|
|
* otherwise fall through.
|
|
*/
|
|
if (dapm->idle_bias_off) {
|
|
dev_dbg(component->dev,
|
|
"ASoC: idle_bias_off CODEC on over suspend\n");
|
|
break;
|
|
}
|
|
/* fall through */
|
|
|
|
case SND_SOC_BIAS_OFF:
|
|
snd_soc_component_suspend(component);
|
|
if (component->regmap)
|
|
regcache_mark_dirty(component->regmap);
|
|
/* deactivate pins to sleep state */
|
|
pinctrl_pm_select_sleep_state(component->dev);
|
|
break;
|
|
default:
|
|
dev_dbg(component->dev,
|
|
"ASoC: COMPONENT is on over suspend\n");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
for_each_card_rtds(card, rtd) {
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
|
|
if (rtd->dai_link->ignore_suspend)
|
|
continue;
|
|
|
|
if (cpu_dai->driver->bus_control)
|
|
snd_soc_dai_suspend(cpu_dai);
|
|
|
|
/* deactivate pins to sleep state */
|
|
pinctrl_pm_select_sleep_state(cpu_dai->dev);
|
|
}
|
|
|
|
if (card->suspend_post)
|
|
card->suspend_post(card);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_suspend);
|
|
|
|
/*
|
|
* deferred resume work, so resume can complete before we finished
|
|
* setting our codec back up, which can be very slow on I2C
|
|
*/
|
|
static void soc_resume_deferred(struct work_struct *work)
|
|
{
|
|
struct snd_soc_card *card =
|
|
container_of(work, struct snd_soc_card,
|
|
deferred_resume_work);
|
|
struct snd_soc_pcm_runtime *rtd;
|
|
struct snd_soc_component *component;
|
|
int i;
|
|
|
|
/*
|
|
* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
|
|
* so userspace apps are blocked from touching us
|
|
*/
|
|
|
|
dev_dbg(card->dev, "ASoC: starting resume work\n");
|
|
|
|
/* Bring us up into D2 so that DAPM starts enabling things */
|
|
snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
|
|
|
|
if (card->resume_pre)
|
|
card->resume_pre(card);
|
|
|
|
/* resume control bus DAIs */
|
|
for_each_card_rtds(card, rtd) {
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
|
|
if (rtd->dai_link->ignore_suspend)
|
|
continue;
|
|
|
|
if (cpu_dai->driver->bus_control)
|
|
snd_soc_dai_resume(cpu_dai);
|
|
}
|
|
|
|
for_each_card_components(card, component) {
|
|
if (snd_soc_component_is_suspended(component))
|
|
snd_soc_component_resume(component);
|
|
}
|
|
|
|
for_each_card_rtds(card, rtd) {
|
|
|
|
if (rtd->dai_link->ignore_suspend)
|
|
continue;
|
|
|
|
snd_soc_dapm_stream_event(rtd,
|
|
SNDRV_PCM_STREAM_PLAYBACK,
|
|
SND_SOC_DAPM_STREAM_RESUME);
|
|
|
|
snd_soc_dapm_stream_event(rtd,
|
|
SNDRV_PCM_STREAM_CAPTURE,
|
|
SND_SOC_DAPM_STREAM_RESUME);
|
|
}
|
|
|
|
/* unmute any active DACs */
|
|
for_each_card_rtds(card, rtd) {
|
|
struct snd_soc_dai *dai;
|
|
|
|
if (rtd->dai_link->ignore_suspend)
|
|
continue;
|
|
|
|
for_each_rtd_codec_dai(rtd, i, dai) {
|
|
if (dai->playback_active)
|
|
snd_soc_dai_digital_mute(dai, 0,
|
|
SNDRV_PCM_STREAM_PLAYBACK);
|
|
}
|
|
}
|
|
|
|
for_each_card_rtds(card, rtd) {
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
|
|
if (rtd->dai_link->ignore_suspend)
|
|
continue;
|
|
|
|
if (!cpu_dai->driver->bus_control)
|
|
snd_soc_dai_resume(cpu_dai);
|
|
}
|
|
|
|
if (card->resume_post)
|
|
card->resume_post(card);
|
|
|
|
dev_dbg(card->dev, "ASoC: resume work completed\n");
|
|
|
|
/* Recheck all endpoints too, their state is affected by suspend */
|
|
dapm_mark_endpoints_dirty(card);
|
|
snd_soc_dapm_sync(&card->dapm);
|
|
|
|
/* userspace can access us now we are back as we were before */
|
|
snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
|
|
}
|
|
|
|
/* powers up audio subsystem after a suspend */
|
|
int snd_soc_resume(struct device *dev)
|
|
{
|
|
struct snd_soc_card *card = dev_get_drvdata(dev);
|
|
bool bus_control = false;
|
|
struct snd_soc_pcm_runtime *rtd;
|
|
struct snd_soc_dai *codec_dai;
|
|
int i;
|
|
|
|
/* If the card is not initialized yet there is nothing to do */
|
|
if (!card->instantiated)
|
|
return 0;
|
|
|
|
/* activate pins from sleep state */
|
|
for_each_card_rtds(card, rtd) {
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
|
|
if (cpu_dai->active)
|
|
pinctrl_pm_select_default_state(cpu_dai->dev);
|
|
|
|
for_each_rtd_codec_dai(rtd, i, codec_dai) {
|
|
if (codec_dai->active)
|
|
pinctrl_pm_select_default_state(codec_dai->dev);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* DAIs that also act as the control bus master might have other drivers
|
|
* hanging off them so need to resume immediately. Other drivers don't
|
|
* have that problem and may take a substantial amount of time to resume
|
|
* due to I/O costs and anti-pop so handle them out of line.
|
|
*/
|
|
for_each_card_rtds(card, rtd) {
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
|
|
bus_control |= cpu_dai->driver->bus_control;
|
|
}
|
|
if (bus_control) {
|
|
dev_dbg(dev, "ASoC: Resuming control bus master immediately\n");
|
|
soc_resume_deferred(&card->deferred_resume_work);
|
|
} else {
|
|
dev_dbg(dev, "ASoC: Scheduling resume work\n");
|
|
if (!schedule_work(&card->deferred_resume_work))
|
|
dev_err(dev, "ASoC: resume work item may be lost\n");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_resume);
|
|
|
|
static void soc_resume_init(struct snd_soc_card *card)
|
|
{
|
|
/* deferred resume work */
|
|
INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
|
|
}
|
|
#else
|
|
#define snd_soc_suspend NULL
|
|
#define snd_soc_resume NULL
|
|
static inline void soc_resume_init(struct snd_soc_card *card)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
static const struct snd_soc_dai_ops null_dai_ops = {
|
|
};
|
|
|
|
static struct device_node
|
|
*soc_component_to_node(struct snd_soc_component *component)
|
|
{
|
|
struct device_node *of_node;
|
|
|
|
of_node = component->dev->of_node;
|
|
if (!of_node && component->dev->parent)
|
|
of_node = component->dev->parent->of_node;
|
|
|
|
return of_node;
|
|
}
|
|
|
|
static int snd_soc_is_matching_component(
|
|
const struct snd_soc_dai_link_component *dlc,
|
|
struct snd_soc_component *component)
|
|
{
|
|
struct device_node *component_of_node;
|
|
|
|
if (!dlc)
|
|
return 0;
|
|
|
|
component_of_node = soc_component_to_node(component);
|
|
|
|
if (dlc->of_node && component_of_node != dlc->of_node)
|
|
return 0;
|
|
if (dlc->name && strcmp(component->name, dlc->name))
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static struct snd_soc_component *soc_find_component(
|
|
const struct snd_soc_dai_link_component *dlc)
|
|
{
|
|
struct snd_soc_component *component;
|
|
|
|
lockdep_assert_held(&client_mutex);
|
|
|
|
/*
|
|
* NOTE
|
|
*
|
|
* It returns *1st* found component, but some driver
|
|
* has few components by same of_node/name
|
|
* ex)
|
|
* CPU component and generic DMAEngine component
|
|
*/
|
|
for_each_component(component)
|
|
if (snd_soc_is_matching_component(dlc, component))
|
|
return component;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_find_dai - Find a registered DAI
|
|
*
|
|
* @dlc: name of the DAI or the DAI driver and optional component info to match
|
|
*
|
|
* This function will search all registered components and their DAIs to
|
|
* find the DAI of the same name. The component's of_node and name
|
|
* should also match if being specified.
|
|
*
|
|
* Return: pointer of DAI, or NULL if not found.
|
|
*/
|
|
struct snd_soc_dai *snd_soc_find_dai(
|
|
const struct snd_soc_dai_link_component *dlc)
|
|
{
|
|
struct snd_soc_component *component;
|
|
struct snd_soc_dai *dai;
|
|
|
|
lockdep_assert_held(&client_mutex);
|
|
|
|
/* Find CPU DAI from registered DAIs */
|
|
for_each_component(component) {
|
|
if (!snd_soc_is_matching_component(dlc, component))
|
|
continue;
|
|
for_each_component_dais(component, dai) {
|
|
if (dlc->dai_name && strcmp(dai->name, dlc->dai_name)
|
|
&& (!dai->driver->name
|
|
|| strcmp(dai->driver->name, dlc->dai_name)))
|
|
continue;
|
|
|
|
return dai;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_find_dai);
|
|
|
|
/**
|
|
* snd_soc_find_dai_link - Find a DAI link
|
|
*
|
|
* @card: soc card
|
|
* @id: DAI link ID to match
|
|
* @name: DAI link name to match, optional
|
|
* @stream_name: DAI link stream name to match, optional
|
|
*
|
|
* This function will search all existing DAI links of the soc card to
|
|
* find the link of the same ID. Since DAI links may not have their
|
|
* unique ID, so name and stream name should also match if being
|
|
* specified.
|
|
*
|
|
* Return: pointer of DAI link, or NULL if not found.
|
|
*/
|
|
struct snd_soc_dai_link *snd_soc_find_dai_link(struct snd_soc_card *card,
|
|
int id, const char *name,
|
|
const char *stream_name)
|
|
{
|
|
struct snd_soc_dai_link *link;
|
|
|
|
lockdep_assert_held(&client_mutex);
|
|
|
|
for_each_card_links(card, link) {
|
|
if (link->id != id)
|
|
continue;
|
|
|
|
if (name && (!link->name || strcmp(name, link->name)))
|
|
continue;
|
|
|
|
if (stream_name && (!link->stream_name
|
|
|| strcmp(stream_name, link->stream_name)))
|
|
continue;
|
|
|
|
return link;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_find_dai_link);
|
|
|
|
static bool soc_is_dai_link_bound(struct snd_soc_card *card,
|
|
struct snd_soc_dai_link *dai_link)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd;
|
|
|
|
for_each_card_rtds(card, rtd) {
|
|
if (rtd->dai_link == dai_link)
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static int soc_bind_dai_link(struct snd_soc_card *card,
|
|
struct snd_soc_dai_link *dai_link)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd;
|
|
struct snd_soc_dai_link_component *codec, *platform;
|
|
struct snd_soc_component *component;
|
|
int i;
|
|
|
|
if (dai_link->ignore)
|
|
return 0;
|
|
|
|
dev_dbg(card->dev, "ASoC: binding %s\n", dai_link->name);
|
|
|
|
if (soc_is_dai_link_bound(card, dai_link)) {
|
|
dev_dbg(card->dev, "ASoC: dai link %s already bound\n",
|
|
dai_link->name);
|
|
return 0;
|
|
}
|
|
|
|
rtd = soc_new_pcm_runtime(card, dai_link);
|
|
if (!rtd)
|
|
return -ENOMEM;
|
|
|
|
/* FIXME: we need multi CPU support in the future */
|
|
rtd->cpu_dai = snd_soc_find_dai(dai_link->cpus);
|
|
if (!rtd->cpu_dai) {
|
|
dev_info(card->dev, "ASoC: CPU DAI %s not registered\n",
|
|
dai_link->cpus->dai_name);
|
|
goto _err_defer;
|
|
}
|
|
snd_soc_rtdcom_add(rtd, rtd->cpu_dai->component);
|
|
|
|
/* Find CODEC from registered CODECs */
|
|
rtd->num_codecs = dai_link->num_codecs;
|
|
for_each_link_codecs(dai_link, i, codec) {
|
|
rtd->codec_dais[i] = snd_soc_find_dai(codec);
|
|
if (!rtd->codec_dais[i]) {
|
|
dev_info(card->dev, "ASoC: CODEC DAI %s not registered\n",
|
|
codec->dai_name);
|
|
goto _err_defer;
|
|
}
|
|
|
|
snd_soc_rtdcom_add(rtd, rtd->codec_dais[i]->component);
|
|
}
|
|
|
|
/* Single codec links expect codec and codec_dai in runtime data */
|
|
rtd->codec_dai = rtd->codec_dais[0];
|
|
|
|
/* Find PLATFORM from registered PLATFORMs */
|
|
for_each_link_platforms(dai_link, i, platform) {
|
|
for_each_component(component) {
|
|
if (!snd_soc_is_matching_component(platform, component))
|
|
continue;
|
|
|
|
snd_soc_rtdcom_add(rtd, component);
|
|
}
|
|
}
|
|
|
|
soc_add_pcm_runtime(card, rtd);
|
|
return 0;
|
|
|
|
_err_defer:
|
|
soc_free_pcm_runtime(rtd);
|
|
return -EPROBE_DEFER;
|
|
}
|
|
|
|
static void soc_set_of_name_prefix(struct snd_soc_component *component)
|
|
{
|
|
struct device_node *of_node = soc_component_to_node(component);
|
|
const char *str;
|
|
int ret;
|
|
|
|
ret = of_property_read_string(of_node, "sound-name-prefix", &str);
|
|
if (!ret)
|
|
component->name_prefix = str;
|
|
}
|
|
|
|
static void soc_set_name_prefix(struct snd_soc_card *card,
|
|
struct snd_soc_component *component)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < card->num_configs && card->codec_conf; i++) {
|
|
struct snd_soc_codec_conf *map = &card->codec_conf[i];
|
|
struct device_node *of_node = soc_component_to_node(component);
|
|
|
|
if (map->of_node && of_node != map->of_node)
|
|
continue;
|
|
if (map->dev_name && strcmp(component->name, map->dev_name))
|
|
continue;
|
|
component->name_prefix = map->name_prefix;
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* If there is no configuration table or no match in the table,
|
|
* check if a prefix is provided in the node
|
|
*/
|
|
soc_set_of_name_prefix(component);
|
|
}
|
|
|
|
static void soc_cleanup_component(struct snd_soc_component *component)
|
|
{
|
|
/* For framework level robustness */
|
|
snd_soc_component_set_jack(component, NULL, NULL);
|
|
|
|
list_del_init(&component->card_list);
|
|
snd_soc_dapm_free(snd_soc_component_get_dapm(component));
|
|
soc_cleanup_component_debugfs(component);
|
|
component->card = NULL;
|
|
snd_soc_component_module_put_when_remove(component);
|
|
}
|
|
|
|
static void soc_remove_component(struct snd_soc_component *component)
|
|
{
|
|
if (!component->card)
|
|
return;
|
|
|
|
snd_soc_component_remove(component);
|
|
|
|
soc_cleanup_component(component);
|
|
}
|
|
|
|
static int soc_probe_component(struct snd_soc_card *card,
|
|
struct snd_soc_component *component)
|
|
{
|
|
struct snd_soc_dapm_context *dapm =
|
|
snd_soc_component_get_dapm(component);
|
|
struct snd_soc_dai *dai;
|
|
int ret;
|
|
|
|
if (!strcmp(component->name, "snd-soc-dummy"))
|
|
return 0;
|
|
|
|
if (component->card) {
|
|
if (component->card != card) {
|
|
dev_err(component->dev,
|
|
"Trying to bind component to card \"%s\" but is already bound to card \"%s\"\n",
|
|
card->name, component->card->name);
|
|
return -ENODEV;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
ret = snd_soc_component_module_get_when_probe(component);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
component->card = card;
|
|
soc_set_name_prefix(card, component);
|
|
|
|
soc_init_component_debugfs(component);
|
|
|
|
snd_soc_dapm_init(dapm, card, component);
|
|
|
|
ret = snd_soc_dapm_new_controls(dapm,
|
|
component->driver->dapm_widgets,
|
|
component->driver->num_dapm_widgets);
|
|
|
|
if (ret != 0) {
|
|
dev_err(component->dev,
|
|
"Failed to create new controls %d\n", ret);
|
|
goto err_probe;
|
|
}
|
|
|
|
for_each_component_dais(component, dai) {
|
|
ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
|
|
if (ret != 0) {
|
|
dev_err(component->dev,
|
|
"Failed to create DAI widgets %d\n", ret);
|
|
goto err_probe;
|
|
}
|
|
}
|
|
|
|
ret = snd_soc_component_probe(component);
|
|
if (ret < 0) {
|
|
dev_err(component->dev,
|
|
"ASoC: failed to probe component %d\n", ret);
|
|
goto err_probe;
|
|
}
|
|
WARN(dapm->idle_bias_off &&
|
|
dapm->bias_level != SND_SOC_BIAS_OFF,
|
|
"codec %s can not start from non-off bias with idle_bias_off==1\n",
|
|
component->name);
|
|
|
|
/* machine specific init */
|
|
if (component->init) {
|
|
ret = component->init(component);
|
|
if (ret < 0) {
|
|
dev_err(component->dev,
|
|
"Failed to do machine specific init %d\n", ret);
|
|
goto err_probe;
|
|
}
|
|
}
|
|
|
|
ret = snd_soc_add_component_controls(component,
|
|
component->driver->controls,
|
|
component->driver->num_controls);
|
|
if (ret < 0)
|
|
goto err_probe;
|
|
|
|
ret = snd_soc_dapm_add_routes(dapm,
|
|
component->driver->dapm_routes,
|
|
component->driver->num_dapm_routes);
|
|
if (ret < 0)
|
|
goto err_probe;
|
|
|
|
/* see for_each_card_components */
|
|
list_add(&component->card_list, &card->component_dev_list);
|
|
|
|
err_probe:
|
|
if (ret < 0)
|
|
soc_cleanup_component(component);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void soc_remove_dai(struct snd_soc_dai *dai, int order)
|
|
{
|
|
int err;
|
|
|
|
if (!dai || !dai->probed || !dai->driver ||
|
|
dai->driver->remove_order != order)
|
|
return;
|
|
|
|
err = snd_soc_dai_remove(dai);
|
|
if (err < 0)
|
|
dev_err(dai->dev,
|
|
"ASoC: failed to remove %s: %d\n",
|
|
dai->name, err);
|
|
|
|
dai->probed = 0;
|
|
}
|
|
|
|
static int soc_probe_dai(struct snd_soc_dai *dai, int order)
|
|
{
|
|
int ret;
|
|
|
|
if (dai->probed ||
|
|
dai->driver->probe_order != order)
|
|
return 0;
|
|
|
|
ret = snd_soc_dai_probe(dai);
|
|
if (ret < 0) {
|
|
dev_err(dai->dev, "ASoC: failed to probe DAI %s: %d\n",
|
|
dai->name, ret);
|
|
return ret;
|
|
}
|
|
|
|
dai->probed = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void soc_rtd_free(struct snd_soc_pcm_runtime *rtd); /* remove me */
|
|
static void soc_remove_link_dais(struct snd_soc_card *card)
|
|
{
|
|
int i;
|
|
struct snd_soc_dai *codec_dai;
|
|
struct snd_soc_pcm_runtime *rtd;
|
|
int order;
|
|
|
|
for_each_comp_order(order) {
|
|
for_each_card_rtds(card, rtd) {
|
|
|
|
/* finalize rtd device */
|
|
soc_rtd_free(rtd);
|
|
|
|
/* remove the CODEC DAI */
|
|
for_each_rtd_codec_dai(rtd, i, codec_dai)
|
|
soc_remove_dai(codec_dai, order);
|
|
|
|
soc_remove_dai(rtd->cpu_dai, order);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int soc_probe_link_dais(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_dai *codec_dai;
|
|
struct snd_soc_pcm_runtime *rtd;
|
|
int i, order, ret;
|
|
|
|
for_each_comp_order(order) {
|
|
for_each_card_rtds(card, rtd) {
|
|
|
|
dev_dbg(card->dev,
|
|
"ASoC: probe %s dai link %d late %d\n",
|
|
card->name, rtd->num, order);
|
|
|
|
ret = soc_probe_dai(rtd->cpu_dai, order);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* probe the CODEC DAI */
|
|
for_each_rtd_codec_dai(rtd, i, codec_dai) {
|
|
ret = soc_probe_dai(codec_dai, order);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void soc_remove_link_components(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_component *component;
|
|
struct snd_soc_pcm_runtime *rtd;
|
|
struct snd_soc_rtdcom_list *rtdcom;
|
|
int order;
|
|
|
|
for_each_comp_order(order) {
|
|
for_each_card_rtds(card, rtd) {
|
|
for_each_rtdcom(rtd, rtdcom) {
|
|
component = rtdcom->component;
|
|
|
|
if (component->driver->remove_order != order)
|
|
continue;
|
|
|
|
soc_remove_component(component);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int soc_probe_link_components(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_component *component;
|
|
struct snd_soc_pcm_runtime *rtd;
|
|
struct snd_soc_rtdcom_list *rtdcom;
|
|
int ret, order;
|
|
|
|
for_each_comp_order(order) {
|
|
for_each_card_rtds(card, rtd) {
|
|
for_each_rtdcom(rtd, rtdcom) {
|
|
component = rtdcom->component;
|
|
|
|
if (component->driver->probe_order != order)
|
|
continue;
|
|
|
|
ret = soc_probe_component(card, component);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void soc_remove_dai_links(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_dai_link *link, *_link;
|
|
|
|
soc_remove_link_dais(card);
|
|
|
|
soc_remove_link_components(card);
|
|
|
|
for_each_card_links_safe(card, link, _link) {
|
|
if (link->dobj.type == SND_SOC_DOBJ_DAI_LINK)
|
|
dev_warn(card->dev, "Topology forgot to remove link %s?\n",
|
|
link->name);
|
|
|
|
list_del(&link->list);
|
|
}
|
|
}
|
|
|
|
static int soc_init_dai_link(struct snd_soc_card *card,
|
|
struct snd_soc_dai_link *link)
|
|
{
|
|
int i;
|
|
struct snd_soc_dai_link_component *codec, *platform;
|
|
|
|
for_each_link_codecs(link, i, codec) {
|
|
/*
|
|
* Codec must be specified by 1 of name or OF node,
|
|
* not both or neither.
|
|
*/
|
|
if (!!codec->name == !!codec->of_node) {
|
|
dev_err(card->dev, "ASoC: Neither/both codec name/of_node are set for %s\n",
|
|
link->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Codec DAI name must be specified */
|
|
if (!codec->dai_name) {
|
|
dev_err(card->dev, "ASoC: codec_dai_name not set for %s\n",
|
|
link->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Defer card registration if codec component is not added to
|
|
* component list.
|
|
*/
|
|
if (!soc_find_component(codec))
|
|
return -EPROBE_DEFER;
|
|
}
|
|
|
|
for_each_link_platforms(link, i, platform) {
|
|
/*
|
|
* Platform may be specified by either name or OF node, but it
|
|
* can be left unspecified, then no components will be inserted
|
|
* in the rtdcom list
|
|
*/
|
|
if (!!platform->name == !!platform->of_node) {
|
|
dev_err(card->dev,
|
|
"ASoC: Neither/both platform name/of_node are set for %s\n",
|
|
link->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Defer card registration if platform component is not added to
|
|
* component list.
|
|
*/
|
|
if (!soc_find_component(platform))
|
|
return -EPROBE_DEFER;
|
|
}
|
|
|
|
/* FIXME */
|
|
if (link->num_cpus > 1) {
|
|
dev_err(card->dev,
|
|
"ASoC: multi cpu is not yet supported %s\n",
|
|
link->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* CPU device may be specified by either name or OF node, but
|
|
* can be left unspecified, and will be matched based on DAI
|
|
* name alone..
|
|
*/
|
|
if (link->cpus->name && link->cpus->of_node) {
|
|
dev_err(card->dev,
|
|
"ASoC: Neither/both cpu name/of_node are set for %s\n",
|
|
link->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Defer card registartion if cpu dai component is not added to
|
|
* component list.
|
|
*/
|
|
if ((link->cpus->of_node || link->cpus->name) &&
|
|
!soc_find_component(link->cpus))
|
|
return -EPROBE_DEFER;
|
|
|
|
/*
|
|
* At least one of CPU DAI name or CPU device name/node must be
|
|
* specified
|
|
*/
|
|
if (!link->cpus->dai_name &&
|
|
!(link->cpus->name || link->cpus->of_node)) {
|
|
dev_err(card->dev,
|
|
"ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
|
|
link->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void snd_soc_disconnect_sync(struct device *dev)
|
|
{
|
|
struct snd_soc_component *component =
|
|
snd_soc_lookup_component(dev, NULL);
|
|
|
|
if (!component || !component->card)
|
|
return;
|
|
|
|
snd_card_disconnect_sync(component->card->snd_card);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_disconnect_sync);
|
|
|
|
/**
|
|
* snd_soc_add_dai_link - Add a DAI link dynamically
|
|
* @card: The ASoC card to which the DAI link is added
|
|
* @dai_link: The new DAI link to add
|
|
*
|
|
* This function adds a DAI link to the ASoC card's link list.
|
|
*
|
|
* Note: Topology can use this API to add DAI links when probing the
|
|
* topology component. And machine drivers can still define static
|
|
* DAI links in dai_link array.
|
|
*/
|
|
int snd_soc_add_dai_link(struct snd_soc_card *card,
|
|
struct snd_soc_dai_link *dai_link)
|
|
{
|
|
if (dai_link->dobj.type
|
|
&& dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) {
|
|
dev_err(card->dev, "Invalid dai link type %d\n",
|
|
dai_link->dobj.type);
|
|
return -EINVAL;
|
|
}
|
|
|
|
lockdep_assert_held(&client_mutex);
|
|
/*
|
|
* Notify the machine driver for extra initialization
|
|
* on the link created by topology.
|
|
*/
|
|
if (dai_link->dobj.type && card->add_dai_link)
|
|
card->add_dai_link(card, dai_link);
|
|
|
|
/* see for_each_card_links */
|
|
list_add_tail(&dai_link->list, &card->dai_link_list);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_add_dai_link);
|
|
|
|
/**
|
|
* snd_soc_remove_dai_link - Remove a DAI link from the list
|
|
* @card: The ASoC card that owns the link
|
|
* @dai_link: The DAI link to remove
|
|
*
|
|
* This function removes a DAI link from the ASoC card's link list.
|
|
*
|
|
* For DAI links previously added by topology, topology should
|
|
* remove them by using the dobj embedded in the link.
|
|
*/
|
|
void snd_soc_remove_dai_link(struct snd_soc_card *card,
|
|
struct snd_soc_dai_link *dai_link)
|
|
{
|
|
if (dai_link->dobj.type
|
|
&& dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) {
|
|
dev_err(card->dev, "Invalid dai link type %d\n",
|
|
dai_link->dobj.type);
|
|
return;
|
|
}
|
|
|
|
lockdep_assert_held(&client_mutex);
|
|
/*
|
|
* Notify the machine driver for extra destruction
|
|
* on the link created by topology.
|
|
*/
|
|
if (dai_link->dobj.type && card->remove_dai_link)
|
|
card->remove_dai_link(card, dai_link);
|
|
|
|
list_del(&dai_link->list);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_remove_dai_link);
|
|
|
|
static void soc_rtd_free(struct snd_soc_pcm_runtime *rtd)
|
|
{
|
|
if (rtd->dev_registered) {
|
|
/* we don't need to call kfree() for rtd->dev */
|
|
device_unregister(rtd->dev);
|
|
rtd->dev_registered = 0;
|
|
}
|
|
}
|
|
|
|
static void soc_rtd_release(struct device *dev)
|
|
{
|
|
kfree(dev);
|
|
}
|
|
|
|
static int soc_rtd_init(struct snd_soc_pcm_runtime *rtd, const char *name)
|
|
{
|
|
int ret = 0;
|
|
|
|
/* register the rtd device */
|
|
rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
|
|
if (!rtd->dev)
|
|
return -ENOMEM;
|
|
rtd->dev->parent = rtd->card->dev;
|
|
rtd->dev->release = soc_rtd_release;
|
|
rtd->dev->groups = soc_dev_attr_groups;
|
|
dev_set_name(rtd->dev, "%s", name);
|
|
dev_set_drvdata(rtd->dev, rtd);
|
|
INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
|
|
INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
|
|
INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
|
|
INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
|
|
ret = device_register(rtd->dev);
|
|
if (ret < 0) {
|
|
/* calling put_device() here to free the rtd->dev */
|
|
put_device(rtd->dev);
|
|
dev_err(rtd->card->dev,
|
|
"ASoC: failed to register runtime device: %d\n", ret);
|
|
return ret;
|
|
}
|
|
rtd->dev_registered = 1;
|
|
return 0;
|
|
}
|
|
|
|
static int soc_link_dai_pcm_new(struct snd_soc_dai **dais, int num_dais,
|
|
struct snd_soc_pcm_runtime *rtd)
|
|
{
|
|
int i, ret = 0;
|
|
|
|
for (i = 0; i < num_dais; ++i) {
|
|
struct snd_soc_dai_driver *drv = dais[i]->driver;
|
|
|
|
if (drv->pcm_new)
|
|
ret = drv->pcm_new(rtd, dais[i]);
|
|
if (ret < 0) {
|
|
dev_err(dais[i]->dev,
|
|
"ASoC: Failed to bind %s with pcm device\n",
|
|
dais[i]->name);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int soc_link_init(struct snd_soc_card *card,
|
|
struct snd_soc_pcm_runtime *rtd)
|
|
{
|
|
struct snd_soc_dai_link *dai_link = rtd->dai_link;
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
struct snd_soc_rtdcom_list *rtdcom;
|
|
struct snd_soc_component *component;
|
|
int ret, num;
|
|
|
|
/* set default power off timeout */
|
|
rtd->pmdown_time = pmdown_time;
|
|
|
|
/* do machine specific initialization */
|
|
if (dai_link->init) {
|
|
ret = dai_link->init(rtd);
|
|
if (ret < 0) {
|
|
dev_err(card->dev, "ASoC: failed to init %s: %d\n",
|
|
dai_link->name, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (dai_link->dai_fmt) {
|
|
ret = snd_soc_runtime_set_dai_fmt(rtd, dai_link->dai_fmt);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
ret = soc_rtd_init(rtd, dai_link->name);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* add DPCM sysfs entries */
|
|
soc_dpcm_debugfs_add(rtd);
|
|
|
|
num = rtd->num;
|
|
|
|
/*
|
|
* most drivers will register their PCMs using DAI link ordering but
|
|
* topology based drivers can use the DAI link id field to set PCM
|
|
* device number and then use rtd + a base offset of the BEs.
|
|
*/
|
|
for_each_rtdcom(rtd, rtdcom) {
|
|
component = rtdcom->component;
|
|
|
|
if (!component->driver->use_dai_pcm_id)
|
|
continue;
|
|
|
|
if (rtd->dai_link->no_pcm)
|
|
num += component->driver->be_pcm_base;
|
|
else
|
|
num = rtd->dai_link->id;
|
|
}
|
|
|
|
/* create compress_device if possible */
|
|
ret = snd_soc_dai_compress_new(cpu_dai, rtd, num);
|
|
if (ret != -ENOTSUPP) {
|
|
if (ret < 0)
|
|
dev_err(card->dev, "ASoC: can't create compress %s\n",
|
|
dai_link->stream_name);
|
|
return ret;
|
|
}
|
|
|
|
/* create the pcm */
|
|
ret = soc_new_pcm(rtd, num);
|
|
if (ret < 0) {
|
|
dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
|
|
dai_link->stream_name, ret);
|
|
return ret;
|
|
}
|
|
ret = soc_link_dai_pcm_new(&cpu_dai, 1, rtd);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = soc_link_dai_pcm_new(rtd->codec_dais,
|
|
rtd->num_codecs, rtd);
|
|
return ret;
|
|
}
|
|
|
|
static void soc_unbind_aux_dev(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_component *component, *_component;
|
|
|
|
for_each_card_auxs_safe(card, component, _component) {
|
|
component->init = NULL;
|
|
list_del(&component->card_aux_list);
|
|
}
|
|
}
|
|
|
|
static int soc_bind_aux_dev(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_component *component;
|
|
struct snd_soc_aux_dev *aux;
|
|
int i;
|
|
|
|
for_each_card_pre_auxs(card, i, aux) {
|
|
/* codecs, usually analog devices */
|
|
component = soc_find_component(&aux->dlc);
|
|
if (!component)
|
|
return -EPROBE_DEFER;
|
|
|
|
component->init = aux->init;
|
|
/* see for_each_card_auxs */
|
|
list_add(&component->card_aux_list, &card->aux_comp_list);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int soc_probe_aux_devices(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_component *comp;
|
|
int order;
|
|
int ret;
|
|
|
|
for_each_comp_order(order) {
|
|
for_each_card_auxs(card, comp) {
|
|
if (comp->driver->probe_order == order) {
|
|
ret = soc_probe_component(card, comp);
|
|
if (ret < 0) {
|
|
dev_err(card->dev,
|
|
"ASoC: failed to probe aux component %s %d\n",
|
|
comp->name, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void soc_remove_aux_devices(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_component *comp, *_comp;
|
|
int order;
|
|
|
|
for_each_comp_order(order) {
|
|
for_each_card_auxs_safe(card, comp, _comp) {
|
|
if (comp->driver->remove_order == order)
|
|
soc_remove_component(comp);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime
|
|
* @rtd: The runtime for which the DAI link format should be changed
|
|
* @dai_fmt: The new DAI link format
|
|
*
|
|
* This function updates the DAI link format for all DAIs connected to the DAI
|
|
* link for the specified runtime.
|
|
*
|
|
* Note: For setups with a static format set the dai_fmt field in the
|
|
* corresponding snd_dai_link struct instead of using this function.
|
|
*
|
|
* Returns 0 on success, otherwise a negative error code.
|
|
*/
|
|
int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd,
|
|
unsigned int dai_fmt)
|
|
{
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
struct snd_soc_dai *codec_dai;
|
|
unsigned int i;
|
|
int ret;
|
|
|
|
for_each_rtd_codec_dai(rtd, i, codec_dai) {
|
|
ret = snd_soc_dai_set_fmt(codec_dai, dai_fmt);
|
|
if (ret != 0 && ret != -ENOTSUPP) {
|
|
dev_warn(codec_dai->dev,
|
|
"ASoC: Failed to set DAI format: %d\n", ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Flip the polarity for the "CPU" end of a CODEC<->CODEC link
|
|
* the component which has non_legacy_dai_naming is Codec
|
|
*/
|
|
if (cpu_dai->component->driver->non_legacy_dai_naming) {
|
|
unsigned int inv_dai_fmt;
|
|
|
|
inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK;
|
|
switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
|
|
case SND_SOC_DAIFMT_CBM_CFM:
|
|
inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBM_CFS:
|
|
inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBS_CFM:
|
|
inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBS_CFS:
|
|
inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
|
|
break;
|
|
}
|
|
|
|
dai_fmt = inv_dai_fmt;
|
|
}
|
|
|
|
ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt);
|
|
if (ret != 0 && ret != -ENOTSUPP) {
|
|
dev_warn(cpu_dai->dev,
|
|
"ASoC: Failed to set DAI format: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt);
|
|
|
|
#ifdef CONFIG_DMI
|
|
/*
|
|
* Trim special characters, and replace '-' with '_' since '-' is used to
|
|
* separate different DMI fields in the card long name. Only number and
|
|
* alphabet characters and a few separator characters are kept.
|
|
*/
|
|
static void cleanup_dmi_name(char *name)
|
|
{
|
|
int i, j = 0;
|
|
|
|
for (i = 0; name[i]; i++) {
|
|
if (isalnum(name[i]) || (name[i] == '.')
|
|
|| (name[i] == '_'))
|
|
name[j++] = name[i];
|
|
else if (name[i] == '-')
|
|
name[j++] = '_';
|
|
}
|
|
|
|
name[j] = '\0';
|
|
}
|
|
|
|
/*
|
|
* Check if a DMI field is valid, i.e. not containing any string
|
|
* in the black list.
|
|
*/
|
|
static int is_dmi_valid(const char *field)
|
|
{
|
|
int i = 0;
|
|
|
|
while (dmi_blacklist[i]) {
|
|
if (strstr(field, dmi_blacklist[i]))
|
|
return 0;
|
|
i++;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_set_dmi_name() - Register DMI names to card
|
|
* @card: The card to register DMI names
|
|
* @flavour: The flavour "differentiator" for the card amongst its peers.
|
|
*
|
|
* An Intel machine driver may be used by many different devices but are
|
|
* difficult for userspace to differentiate, since machine drivers ususally
|
|
* use their own name as the card short name and leave the card long name
|
|
* blank. To differentiate such devices and fix bugs due to lack of
|
|
* device-specific configurations, this function allows DMI info to be used
|
|
* as the sound card long name, in the format of
|
|
* "vendor-product-version-board"
|
|
* (Character '-' is used to separate different DMI fields here).
|
|
* This will help the user space to load the device-specific Use Case Manager
|
|
* (UCM) configurations for the card.
|
|
*
|
|
* Possible card long names may be:
|
|
* DellInc.-XPS139343-01-0310JH
|
|
* ASUSTeKCOMPUTERINC.-T100TA-1.0-T100TA
|
|
* Circuitco-MinnowboardMaxD0PLATFORM-D0-MinnowBoardMAX
|
|
*
|
|
* This function also supports flavoring the card longname to provide
|
|
* the extra differentiation, like "vendor-product-version-board-flavor".
|
|
*
|
|
* We only keep number and alphabet characters and a few separator characters
|
|
* in the card long name since UCM in the user space uses the card long names
|
|
* as card configuration directory names and AudoConf cannot support special
|
|
* charactors like SPACE.
|
|
*
|
|
* Returns 0 on success, otherwise a negative error code.
|
|
*/
|
|
int snd_soc_set_dmi_name(struct snd_soc_card *card, const char *flavour)
|
|
{
|
|
const char *vendor, *product, *product_version, *board;
|
|
size_t longname_buf_size = sizeof(card->snd_card->longname);
|
|
size_t len;
|
|
|
|
if (card->long_name)
|
|
return 0; /* long name already set by driver or from DMI */
|
|
|
|
/* make up dmi long name as: vendor.product.version.board */
|
|
vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
|
|
if (!vendor || !is_dmi_valid(vendor)) {
|
|
dev_warn(card->dev, "ASoC: no DMI vendor name!\n");
|
|
return 0;
|
|
}
|
|
|
|
snprintf(card->dmi_longname, sizeof(card->snd_card->longname),
|
|
"%s", vendor);
|
|
cleanup_dmi_name(card->dmi_longname);
|
|
|
|
product = dmi_get_system_info(DMI_PRODUCT_NAME);
|
|
if (product && is_dmi_valid(product)) {
|
|
len = strlen(card->dmi_longname);
|
|
snprintf(card->dmi_longname + len,
|
|
longname_buf_size - len,
|
|
"-%s", product);
|
|
|
|
len++; /* skip the separator "-" */
|
|
if (len < longname_buf_size)
|
|
cleanup_dmi_name(card->dmi_longname + len);
|
|
|
|
/*
|
|
* some vendors like Lenovo may only put a self-explanatory
|
|
* name in the product version field
|
|
*/
|
|
product_version = dmi_get_system_info(DMI_PRODUCT_VERSION);
|
|
if (product_version && is_dmi_valid(product_version)) {
|
|
len = strlen(card->dmi_longname);
|
|
snprintf(card->dmi_longname + len,
|
|
longname_buf_size - len,
|
|
"-%s", product_version);
|
|
|
|
len++;
|
|
if (len < longname_buf_size)
|
|
cleanup_dmi_name(card->dmi_longname + len);
|
|
}
|
|
}
|
|
|
|
board = dmi_get_system_info(DMI_BOARD_NAME);
|
|
if (board && is_dmi_valid(board)) {
|
|
len = strlen(card->dmi_longname);
|
|
snprintf(card->dmi_longname + len,
|
|
longname_buf_size - len,
|
|
"-%s", board);
|
|
|
|
len++;
|
|
if (len < longname_buf_size)
|
|
cleanup_dmi_name(card->dmi_longname + len);
|
|
} else if (!product) {
|
|
/* fall back to using legacy name */
|
|
dev_warn(card->dev, "ASoC: no DMI board/product name!\n");
|
|
return 0;
|
|
}
|
|
|
|
/* Add flavour to dmi long name */
|
|
if (flavour) {
|
|
len = strlen(card->dmi_longname);
|
|
snprintf(card->dmi_longname + len,
|
|
longname_buf_size - len,
|
|
"-%s", flavour);
|
|
|
|
len++;
|
|
if (len < longname_buf_size)
|
|
cleanup_dmi_name(card->dmi_longname + len);
|
|
}
|
|
|
|
/* set the card long name */
|
|
card->long_name = card->dmi_longname;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_set_dmi_name);
|
|
#endif /* CONFIG_DMI */
|
|
|
|
static void soc_check_tplg_fes(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_component *component;
|
|
const struct snd_soc_component_driver *comp_drv;
|
|
struct snd_soc_dai_link *dai_link;
|
|
int i;
|
|
|
|
for_each_component(component) {
|
|
|
|
/* does this component override FEs ? */
|
|
if (!component->driver->ignore_machine)
|
|
continue;
|
|
|
|
/* for this machine ? */
|
|
if (!strcmp(component->driver->ignore_machine,
|
|
card->dev->driver->name))
|
|
goto match;
|
|
if (strcmp(component->driver->ignore_machine,
|
|
dev_name(card->dev)))
|
|
continue;
|
|
match:
|
|
/* machine matches, so override the rtd data */
|
|
for_each_card_prelinks(card, i, dai_link) {
|
|
|
|
/* ignore this FE */
|
|
if (dai_link->dynamic) {
|
|
dai_link->ignore = true;
|
|
continue;
|
|
}
|
|
|
|
dev_info(card->dev, "info: override FE DAI link %s\n",
|
|
card->dai_link[i].name);
|
|
|
|
/* override platform component */
|
|
if (!dai_link->platforms) {
|
|
dev_err(card->dev, "init platform error");
|
|
continue;
|
|
}
|
|
dai_link->platforms->name = component->name;
|
|
|
|
/* convert non BE into BE */
|
|
dai_link->no_pcm = 1;
|
|
|
|
/* override any BE fixups */
|
|
dai_link->be_hw_params_fixup =
|
|
component->driver->be_hw_params_fixup;
|
|
|
|
/*
|
|
* most BE links don't set stream name, so set it to
|
|
* dai link name if it's NULL to help bind widgets.
|
|
*/
|
|
if (!dai_link->stream_name)
|
|
dai_link->stream_name = dai_link->name;
|
|
}
|
|
|
|
/* Inform userspace we are using alternate topology */
|
|
if (component->driver->topology_name_prefix) {
|
|
|
|
/* topology shortname created? */
|
|
if (!card->topology_shortname_created) {
|
|
comp_drv = component->driver;
|
|
|
|
snprintf(card->topology_shortname, 32, "%s-%s",
|
|
comp_drv->topology_name_prefix,
|
|
card->name);
|
|
card->topology_shortname_created = true;
|
|
}
|
|
|
|
/* use topology shortname */
|
|
card->name = card->topology_shortname;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void soc_cleanup_card_resources(struct snd_soc_card *card)
|
|
{
|
|
/* free the ALSA card at first; this syncs with pending operations */
|
|
if (card->snd_card) {
|
|
snd_card_free(card->snd_card);
|
|
card->snd_card = NULL;
|
|
}
|
|
|
|
/* remove and free each DAI */
|
|
soc_remove_dai_links(card);
|
|
soc_remove_pcm_runtimes(card);
|
|
|
|
/* remove auxiliary devices */
|
|
soc_remove_aux_devices(card);
|
|
soc_unbind_aux_dev(card);
|
|
|
|
snd_soc_dapm_free(&card->dapm);
|
|
soc_cleanup_card_debugfs(card);
|
|
|
|
/* remove the card */
|
|
if (card->remove)
|
|
card->remove(card);
|
|
}
|
|
|
|
static int snd_soc_instantiate_card(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd;
|
|
struct snd_soc_dai_link *dai_link;
|
|
int ret, i;
|
|
|
|
mutex_lock(&client_mutex);
|
|
for_each_card_prelinks(card, i, dai_link) {
|
|
ret = soc_init_dai_link(card, dai_link);
|
|
if (ret) {
|
|
dev_err(card->dev, "ASoC: failed to init link %s: %d\n",
|
|
dai_link->name, ret);
|
|
mutex_unlock(&client_mutex);
|
|
return ret;
|
|
}
|
|
}
|
|
mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
|
|
|
|
snd_soc_dapm_init(&card->dapm, card, NULL);
|
|
|
|
/* check whether any platform is ignore machine FE and using topology */
|
|
soc_check_tplg_fes(card);
|
|
|
|
/* bind DAIs */
|
|
for_each_card_prelinks(card, i, dai_link) {
|
|
ret = soc_bind_dai_link(card, dai_link);
|
|
if (ret != 0)
|
|
goto probe_end;
|
|
}
|
|
|
|
/* bind aux_devs too */
|
|
ret = soc_bind_aux_dev(card);
|
|
if (ret < 0)
|
|
goto probe_end;
|
|
|
|
/* add predefined DAI links to the list */
|
|
for_each_card_prelinks(card, i, dai_link) {
|
|
ret = snd_soc_add_dai_link(card, dai_link);
|
|
if (ret < 0)
|
|
goto probe_end;
|
|
}
|
|
|
|
/* card bind complete so register a sound card */
|
|
ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
|
|
card->owner, 0, &card->snd_card);
|
|
if (ret < 0) {
|
|
dev_err(card->dev,
|
|
"ASoC: can't create sound card for card %s: %d\n",
|
|
card->name, ret);
|
|
goto probe_end;
|
|
}
|
|
|
|
soc_init_card_debugfs(card);
|
|
|
|
soc_resume_init(card);
|
|
|
|
ret = snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
|
|
card->num_dapm_widgets);
|
|
if (ret < 0)
|
|
goto probe_end;
|
|
|
|
ret = snd_soc_dapm_new_controls(&card->dapm, card->of_dapm_widgets,
|
|
card->num_of_dapm_widgets);
|
|
if (ret < 0)
|
|
goto probe_end;
|
|
|
|
/* initialise the sound card only once */
|
|
if (card->probe) {
|
|
ret = card->probe(card);
|
|
if (ret < 0)
|
|
goto probe_end;
|
|
}
|
|
|
|
/* probe all components used by DAI links on this card */
|
|
ret = soc_probe_link_components(card);
|
|
if (ret < 0) {
|
|
dev_err(card->dev,
|
|
"ASoC: failed to instantiate card %d\n", ret);
|
|
goto probe_end;
|
|
}
|
|
|
|
/* probe auxiliary components */
|
|
ret = soc_probe_aux_devices(card);
|
|
if (ret < 0)
|
|
goto probe_end;
|
|
|
|
/*
|
|
* Find new DAI links added during probing components and bind them.
|
|
* Components with topology may bring new DAIs and DAI links.
|
|
*/
|
|
for_each_card_links(card, dai_link) {
|
|
if (soc_is_dai_link_bound(card, dai_link))
|
|
continue;
|
|
|
|
ret = soc_init_dai_link(card, dai_link);
|
|
if (ret)
|
|
goto probe_end;
|
|
ret = soc_bind_dai_link(card, dai_link);
|
|
if (ret)
|
|
goto probe_end;
|
|
}
|
|
|
|
/* probe all DAI links on this card */
|
|
ret = soc_probe_link_dais(card);
|
|
if (ret < 0) {
|
|
dev_err(card->dev,
|
|
"ASoC: failed to instantiate card %d\n", ret);
|
|
goto probe_end;
|
|
}
|
|
|
|
for_each_card_rtds(card, rtd)
|
|
soc_link_init(card, rtd);
|
|
|
|
snd_soc_dapm_link_dai_widgets(card);
|
|
snd_soc_dapm_connect_dai_link_widgets(card);
|
|
|
|
ret = snd_soc_add_card_controls(card, card->controls,
|
|
card->num_controls);
|
|
if (ret < 0)
|
|
goto probe_end;
|
|
|
|
ret = snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
|
|
card->num_dapm_routes);
|
|
if (ret < 0)
|
|
goto probe_end;
|
|
|
|
ret = snd_soc_dapm_add_routes(&card->dapm, card->of_dapm_routes,
|
|
card->num_of_dapm_routes);
|
|
if (ret < 0)
|
|
goto probe_end;
|
|
|
|
/* try to set some sane longname if DMI is available */
|
|
snd_soc_set_dmi_name(card, NULL);
|
|
|
|
snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
|
|
"%s", card->name);
|
|
snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
|
|
"%s", card->long_name ? card->long_name : card->name);
|
|
snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
|
|
"%s", card->driver_name ? card->driver_name : card->name);
|
|
for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
|
|
switch (card->snd_card->driver[i]) {
|
|
case '_':
|
|
case '-':
|
|
case '\0':
|
|
break;
|
|
default:
|
|
if (!isalnum(card->snd_card->driver[i]))
|
|
card->snd_card->driver[i] = '_';
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (card->late_probe) {
|
|
ret = card->late_probe(card);
|
|
if (ret < 0) {
|
|
dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
|
|
card->name, ret);
|
|
goto probe_end;
|
|
}
|
|
}
|
|
|
|
snd_soc_dapm_new_widgets(card);
|
|
|
|
ret = snd_card_register(card->snd_card);
|
|
if (ret < 0) {
|
|
dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
|
|
ret);
|
|
goto probe_end;
|
|
}
|
|
|
|
card->instantiated = 1;
|
|
dapm_mark_endpoints_dirty(card);
|
|
snd_soc_dapm_sync(&card->dapm);
|
|
|
|
probe_end:
|
|
if (ret < 0)
|
|
soc_cleanup_card_resources(card);
|
|
|
|
mutex_unlock(&card->mutex);
|
|
mutex_unlock(&client_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* probes a new socdev */
|
|
static int soc_probe(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_card *card = platform_get_drvdata(pdev);
|
|
|
|
/*
|
|
* no card, so machine driver should be registering card
|
|
* we should not be here in that case so ret error
|
|
*/
|
|
if (!card)
|
|
return -EINVAL;
|
|
|
|
dev_warn(&pdev->dev,
|
|
"ASoC: machine %s should use snd_soc_register_card()\n",
|
|
card->name);
|
|
|
|
/* Bodge while we unpick instantiation */
|
|
card->dev = &pdev->dev;
|
|
|
|
return snd_soc_register_card(card);
|
|
}
|
|
|
|
/* removes a socdev */
|
|
static int soc_remove(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_card *card = platform_get_drvdata(pdev);
|
|
|
|
snd_soc_unregister_card(card);
|
|
return 0;
|
|
}
|
|
|
|
int snd_soc_poweroff(struct device *dev)
|
|
{
|
|
struct snd_soc_card *card = dev_get_drvdata(dev);
|
|
struct snd_soc_pcm_runtime *rtd;
|
|
|
|
if (!card->instantiated)
|
|
return 0;
|
|
|
|
/*
|
|
* Flush out pmdown_time work - we actually do want to run it
|
|
* now, we're shutting down so no imminent restart.
|
|
*/
|
|
snd_soc_flush_all_delayed_work(card);
|
|
|
|
snd_soc_dapm_shutdown(card);
|
|
|
|
/* deactivate pins to sleep state */
|
|
for_each_card_rtds(card, rtd) {
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
struct snd_soc_dai *codec_dai;
|
|
int i;
|
|
|
|
pinctrl_pm_select_sleep_state(cpu_dai->dev);
|
|
for_each_rtd_codec_dai(rtd, i, codec_dai) {
|
|
pinctrl_pm_select_sleep_state(codec_dai->dev);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_poweroff);
|
|
|
|
const struct dev_pm_ops snd_soc_pm_ops = {
|
|
.suspend = snd_soc_suspend,
|
|
.resume = snd_soc_resume,
|
|
.freeze = snd_soc_suspend,
|
|
.thaw = snd_soc_resume,
|
|
.poweroff = snd_soc_poweroff,
|
|
.restore = snd_soc_resume,
|
|
};
|
|
EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
|
|
|
|
/* ASoC platform driver */
|
|
static struct platform_driver soc_driver = {
|
|
.driver = {
|
|
.name = "soc-audio",
|
|
.pm = &snd_soc_pm_ops,
|
|
},
|
|
.probe = soc_probe,
|
|
.remove = soc_remove,
|
|
};
|
|
|
|
/**
|
|
* snd_soc_cnew - create new control
|
|
* @_template: control template
|
|
* @data: control private data
|
|
* @long_name: control long name
|
|
* @prefix: control name prefix
|
|
*
|
|
* Create a new mixer control from a template control.
|
|
*
|
|
* Returns 0 for success, else error.
|
|
*/
|
|
struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
|
|
void *data, const char *long_name,
|
|
const char *prefix)
|
|
{
|
|
struct snd_kcontrol_new template;
|
|
struct snd_kcontrol *kcontrol;
|
|
char *name = NULL;
|
|
|
|
memcpy(&template, _template, sizeof(template));
|
|
template.index = 0;
|
|
|
|
if (!long_name)
|
|
long_name = template.name;
|
|
|
|
if (prefix) {
|
|
name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
|
|
if (!name)
|
|
return NULL;
|
|
|
|
template.name = name;
|
|
} else {
|
|
template.name = long_name;
|
|
}
|
|
|
|
kcontrol = snd_ctl_new1(&template, data);
|
|
|
|
kfree(name);
|
|
|
|
return kcontrol;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_cnew);
|
|
|
|
static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
|
|
const struct snd_kcontrol_new *controls, int num_controls,
|
|
const char *prefix, void *data)
|
|
{
|
|
int err, i;
|
|
|
|
for (i = 0; i < num_controls; i++) {
|
|
const struct snd_kcontrol_new *control = &controls[i];
|
|
|
|
err = snd_ctl_add(card, snd_soc_cnew(control, data,
|
|
control->name, prefix));
|
|
if (err < 0) {
|
|
dev_err(dev, "ASoC: Failed to add %s: %d\n",
|
|
control->name, err);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
|
|
const char *name)
|
|
{
|
|
struct snd_card *card = soc_card->snd_card;
|
|
struct snd_kcontrol *kctl;
|
|
|
|
if (unlikely(!name))
|
|
return NULL;
|
|
|
|
list_for_each_entry(kctl, &card->controls, list)
|
|
if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
|
|
return kctl;
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
|
|
|
|
/**
|
|
* snd_soc_add_component_controls - Add an array of controls to a component.
|
|
*
|
|
* @component: Component to add controls to
|
|
* @controls: Array of controls to add
|
|
* @num_controls: Number of elements in the array
|
|
*
|
|
* Return: 0 for success, else error.
|
|
*/
|
|
int snd_soc_add_component_controls(struct snd_soc_component *component,
|
|
const struct snd_kcontrol_new *controls, unsigned int num_controls)
|
|
{
|
|
struct snd_card *card = component->card->snd_card;
|
|
|
|
return snd_soc_add_controls(card, component->dev, controls,
|
|
num_controls, component->name_prefix, component);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_add_component_controls);
|
|
|
|
/**
|
|
* snd_soc_add_card_controls - add an array of controls to a SoC card.
|
|
* Convenience function to add a list of controls.
|
|
*
|
|
* @soc_card: SoC card to add controls to
|
|
* @controls: array of controls to add
|
|
* @num_controls: number of elements in the array
|
|
*
|
|
* Return 0 for success, else error.
|
|
*/
|
|
int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
|
|
const struct snd_kcontrol_new *controls, int num_controls)
|
|
{
|
|
struct snd_card *card = soc_card->snd_card;
|
|
|
|
return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
|
|
NULL, soc_card);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
|
|
|
|
/**
|
|
* snd_soc_add_dai_controls - add an array of controls to a DAI.
|
|
* Convienience function to add a list of controls.
|
|
*
|
|
* @dai: DAI to add controls to
|
|
* @controls: array of controls to add
|
|
* @num_controls: number of elements in the array
|
|
*
|
|
* Return 0 for success, else error.
|
|
*/
|
|
int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
|
|
const struct snd_kcontrol_new *controls, int num_controls)
|
|
{
|
|
struct snd_card *card = dai->component->card->snd_card;
|
|
|
|
return snd_soc_add_controls(card, dai->dev, controls, num_controls,
|
|
NULL, dai);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
|
|
|
|
static int snd_soc_bind_card(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd;
|
|
int ret;
|
|
|
|
ret = snd_soc_instantiate_card(card);
|
|
if (ret != 0)
|
|
return ret;
|
|
|
|
/* deactivate pins to sleep state */
|
|
for_each_card_rtds(card, rtd) {
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
struct snd_soc_dai *codec_dai;
|
|
int j;
|
|
|
|
for_each_rtd_codec_dai(rtd, j, codec_dai) {
|
|
if (!codec_dai->active)
|
|
pinctrl_pm_select_sleep_state(codec_dai->dev);
|
|
}
|
|
|
|
if (!cpu_dai->active)
|
|
pinctrl_pm_select_sleep_state(cpu_dai->dev);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_register_card - Register a card with the ASoC core
|
|
*
|
|
* @card: Card to register
|
|
*
|
|
*/
|
|
int snd_soc_register_card(struct snd_soc_card *card)
|
|
{
|
|
if (!card->name || !card->dev)
|
|
return -EINVAL;
|
|
|
|
dev_set_drvdata(card->dev, card);
|
|
|
|
INIT_LIST_HEAD(&card->widgets);
|
|
INIT_LIST_HEAD(&card->paths);
|
|
INIT_LIST_HEAD(&card->dapm_list);
|
|
INIT_LIST_HEAD(&card->aux_comp_list);
|
|
INIT_LIST_HEAD(&card->component_dev_list);
|
|
INIT_LIST_HEAD(&card->list);
|
|
INIT_LIST_HEAD(&card->dai_link_list);
|
|
INIT_LIST_HEAD(&card->rtd_list);
|
|
INIT_LIST_HEAD(&card->dapm_dirty);
|
|
INIT_LIST_HEAD(&card->dobj_list);
|
|
|
|
card->num_rtd = 0;
|
|
card->instantiated = 0;
|
|
mutex_init(&card->mutex);
|
|
mutex_init(&card->dapm_mutex);
|
|
mutex_init(&card->pcm_mutex);
|
|
spin_lock_init(&card->dpcm_lock);
|
|
|
|
return snd_soc_bind_card(card);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_register_card);
|
|
|
|
static void snd_soc_unbind_card(struct snd_soc_card *card, bool unregister)
|
|
{
|
|
if (card->instantiated) {
|
|
card->instantiated = false;
|
|
snd_soc_dapm_shutdown(card);
|
|
snd_soc_flush_all_delayed_work(card);
|
|
|
|
/* remove all components used by DAI links on this card */
|
|
soc_remove_link_components(card);
|
|
|
|
soc_cleanup_card_resources(card);
|
|
if (!unregister)
|
|
list_add(&card->list, &unbind_card_list);
|
|
} else {
|
|
if (unregister)
|
|
list_del(&card->list);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* snd_soc_unregister_card - Unregister a card with the ASoC core
|
|
*
|
|
* @card: Card to unregister
|
|
*
|
|
*/
|
|
int snd_soc_unregister_card(struct snd_soc_card *card)
|
|
{
|
|
mutex_lock(&client_mutex);
|
|
snd_soc_unbind_card(card, true);
|
|
mutex_unlock(&client_mutex);
|
|
dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
|
|
|
|
/*
|
|
* Simplify DAI link configuration by removing ".-1" from device names
|
|
* and sanitizing names.
|
|
*/
|
|
static char *fmt_single_name(struct device *dev, int *id)
|
|
{
|
|
char *found, name[NAME_SIZE];
|
|
int id1, id2;
|
|
|
|
if (dev_name(dev) == NULL)
|
|
return NULL;
|
|
|
|
strlcpy(name, dev_name(dev), NAME_SIZE);
|
|
|
|
/* are we a "%s.%d" name (platform and SPI components) */
|
|
found = strstr(name, dev->driver->name);
|
|
if (found) {
|
|
/* get ID */
|
|
if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
|
|
|
|
/* discard ID from name if ID == -1 */
|
|
if (*id == -1)
|
|
found[strlen(dev->driver->name)] = '\0';
|
|
}
|
|
|
|
} else {
|
|
/* I2C component devices are named "bus-addr" */
|
|
if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
|
|
char tmp[NAME_SIZE];
|
|
|
|
/* create unique ID number from I2C addr and bus */
|
|
*id = ((id1 & 0xffff) << 16) + id2;
|
|
|
|
/* sanitize component name for DAI link creation */
|
|
snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name,
|
|
name);
|
|
strlcpy(name, tmp, NAME_SIZE);
|
|
} else
|
|
*id = 0;
|
|
}
|
|
|
|
return kstrdup(name, GFP_KERNEL);
|
|
}
|
|
|
|
/*
|
|
* Simplify DAI link naming for single devices with multiple DAIs by removing
|
|
* any ".-1" and using the DAI name (instead of device name).
|
|
*/
|
|
static inline char *fmt_multiple_name(struct device *dev,
|
|
struct snd_soc_dai_driver *dai_drv)
|
|
{
|
|
if (dai_drv->name == NULL) {
|
|
dev_err(dev,
|
|
"ASoC: error - multiple DAI %s registered with no name\n",
|
|
dev_name(dev));
|
|
return NULL;
|
|
}
|
|
|
|
return kstrdup(dai_drv->name, GFP_KERNEL);
|
|
}
|
|
|
|
/**
|
|
* snd_soc_unregister_dai - Unregister DAIs from the ASoC core
|
|
*
|
|
* @component: The component for which the DAIs should be unregistered
|
|
*/
|
|
static void snd_soc_unregister_dais(struct snd_soc_component *component)
|
|
{
|
|
struct snd_soc_dai *dai, *_dai;
|
|
|
|
for_each_component_dais_safe(component, dai, _dai) {
|
|
dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
|
|
dai->name);
|
|
list_del(&dai->list);
|
|
kfree(dai->name);
|
|
kfree(dai);
|
|
}
|
|
}
|
|
|
|
/* Create a DAI and add it to the component's DAI list */
|
|
static struct snd_soc_dai *soc_add_dai(struct snd_soc_component *component,
|
|
struct snd_soc_dai_driver *dai_drv,
|
|
bool legacy_dai_naming)
|
|
{
|
|
struct device *dev = component->dev;
|
|
struct snd_soc_dai *dai;
|
|
|
|
dev_dbg(dev, "ASoC: dynamically register DAI %s\n", dev_name(dev));
|
|
|
|
dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
|
|
if (dai == NULL)
|
|
return NULL;
|
|
|
|
/*
|
|
* Back in the old days when we still had component-less DAIs,
|
|
* instead of having a static name, component-less DAIs would
|
|
* inherit the name of the parent device so it is possible to
|
|
* register multiple instances of the DAI. We still need to keep
|
|
* the same naming style even though those DAIs are not
|
|
* component-less anymore.
|
|
*/
|
|
if (legacy_dai_naming &&
|
|
(dai_drv->id == 0 || dai_drv->name == NULL)) {
|
|
dai->name = fmt_single_name(dev, &dai->id);
|
|
} else {
|
|
dai->name = fmt_multiple_name(dev, dai_drv);
|
|
if (dai_drv->id)
|
|
dai->id = dai_drv->id;
|
|
else
|
|
dai->id = component->num_dai;
|
|
}
|
|
if (dai->name == NULL) {
|
|
kfree(dai);
|
|
return NULL;
|
|
}
|
|
|
|
dai->component = component;
|
|
dai->dev = dev;
|
|
dai->driver = dai_drv;
|
|
if (!dai->driver->ops)
|
|
dai->driver->ops = &null_dai_ops;
|
|
|
|
/* see for_each_component_dais */
|
|
list_add_tail(&dai->list, &component->dai_list);
|
|
component->num_dai++;
|
|
|
|
dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
|
|
return dai;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_register_dais - Register a DAI with the ASoC core
|
|
*
|
|
* @component: The component the DAIs are registered for
|
|
* @dai_drv: DAI driver to use for the DAIs
|
|
* @count: Number of DAIs
|
|
*/
|
|
static int snd_soc_register_dais(struct snd_soc_component *component,
|
|
struct snd_soc_dai_driver *dai_drv,
|
|
size_t count)
|
|
{
|
|
struct device *dev = component->dev;
|
|
struct snd_soc_dai *dai;
|
|
unsigned int i;
|
|
int ret;
|
|
|
|
dev_dbg(dev, "ASoC: dai register %s #%zu\n", dev_name(dev), count);
|
|
|
|
for (i = 0; i < count; i++) {
|
|
|
|
dai = soc_add_dai(component, dai_drv + i, count == 1 &&
|
|
!component->driver->non_legacy_dai_naming);
|
|
if (dai == NULL) {
|
|
ret = -ENOMEM;
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
err:
|
|
snd_soc_unregister_dais(component);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_register_dai - Register a DAI dynamically & create its widgets
|
|
*
|
|
* @component: The component the DAIs are registered for
|
|
* @dai_drv: DAI driver to use for the DAI
|
|
*
|
|
* Topology can use this API to register DAIs when probing a component.
|
|
* These DAIs's widgets will be freed in the card cleanup and the DAIs
|
|
* will be freed in the component cleanup.
|
|
*/
|
|
int snd_soc_register_dai(struct snd_soc_component *component,
|
|
struct snd_soc_dai_driver *dai_drv)
|
|
{
|
|
struct snd_soc_dapm_context *dapm =
|
|
snd_soc_component_get_dapm(component);
|
|
struct snd_soc_dai *dai;
|
|
int ret;
|
|
|
|
if (dai_drv->dobj.type != SND_SOC_DOBJ_PCM) {
|
|
dev_err(component->dev, "Invalid dai type %d\n",
|
|
dai_drv->dobj.type);
|
|
return -EINVAL;
|
|
}
|
|
|
|
lockdep_assert_held(&client_mutex);
|
|
dai = soc_add_dai(component, dai_drv, false);
|
|
if (!dai)
|
|
return -ENOMEM;
|
|
|
|
/*
|
|
* Create the DAI widgets here. After adding DAIs, topology may
|
|
* also add routes that need these widgets as source or sink.
|
|
*/
|
|
ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
|
|
if (ret != 0) {
|
|
dev_err(component->dev,
|
|
"Failed to create DAI widgets %d\n", ret);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_register_dai);
|
|
|
|
static int snd_soc_component_initialize(struct snd_soc_component *component,
|
|
const struct snd_soc_component_driver *driver, struct device *dev)
|
|
{
|
|
INIT_LIST_HEAD(&component->dai_list);
|
|
INIT_LIST_HEAD(&component->dobj_list);
|
|
INIT_LIST_HEAD(&component->card_list);
|
|
mutex_init(&component->io_mutex);
|
|
|
|
component->name = fmt_single_name(dev, &component->id);
|
|
if (!component->name) {
|
|
dev_err(dev, "ASoC: Failed to allocate name\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
component->dev = dev;
|
|
component->driver = driver;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void snd_soc_component_setup_regmap(struct snd_soc_component *component)
|
|
{
|
|
int val_bytes = regmap_get_val_bytes(component->regmap);
|
|
|
|
/* Errors are legitimate for non-integer byte multiples */
|
|
if (val_bytes > 0)
|
|
component->val_bytes = val_bytes;
|
|
}
|
|
|
|
#ifdef CONFIG_REGMAP
|
|
|
|
/**
|
|
* snd_soc_component_init_regmap() - Initialize regmap instance for the
|
|
* component
|
|
* @component: The component for which to initialize the regmap instance
|
|
* @regmap: The regmap instance that should be used by the component
|
|
*
|
|
* This function allows deferred assignment of the regmap instance that is
|
|
* associated with the component. Only use this if the regmap instance is not
|
|
* yet ready when the component is registered. The function must also be called
|
|
* before the first IO attempt of the component.
|
|
*/
|
|
void snd_soc_component_init_regmap(struct snd_soc_component *component,
|
|
struct regmap *regmap)
|
|
{
|
|
component->regmap = regmap;
|
|
snd_soc_component_setup_regmap(component);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap);
|
|
|
|
/**
|
|
* snd_soc_component_exit_regmap() - De-initialize regmap instance for the
|
|
* component
|
|
* @component: The component for which to de-initialize the regmap instance
|
|
*
|
|
* Calls regmap_exit() on the regmap instance associated to the component and
|
|
* removes the regmap instance from the component.
|
|
*
|
|
* This function should only be used if snd_soc_component_init_regmap() was used
|
|
* to initialize the regmap instance.
|
|
*/
|
|
void snd_soc_component_exit_regmap(struct snd_soc_component *component)
|
|
{
|
|
regmap_exit(component->regmap);
|
|
component->regmap = NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap);
|
|
|
|
#endif
|
|
|
|
static void snd_soc_component_add(struct snd_soc_component *component)
|
|
{
|
|
mutex_lock(&client_mutex);
|
|
|
|
if (!component->driver->write && !component->driver->read) {
|
|
if (!component->regmap)
|
|
component->regmap = dev_get_regmap(component->dev,
|
|
NULL);
|
|
if (component->regmap)
|
|
snd_soc_component_setup_regmap(component);
|
|
}
|
|
|
|
/* see for_each_component */
|
|
list_add(&component->list, &component_list);
|
|
|
|
mutex_unlock(&client_mutex);
|
|
}
|
|
|
|
static void snd_soc_component_cleanup(struct snd_soc_component *component)
|
|
{
|
|
snd_soc_unregister_dais(component);
|
|
kfree(component->name);
|
|
}
|
|
|
|
static void snd_soc_component_del_unlocked(struct snd_soc_component *component)
|
|
{
|
|
struct snd_soc_card *card = component->card;
|
|
|
|
if (card)
|
|
snd_soc_unbind_card(card, false);
|
|
|
|
list_del(&component->list);
|
|
}
|
|
|
|
#define ENDIANNESS_MAP(name) \
|
|
(SNDRV_PCM_FMTBIT_##name##LE | SNDRV_PCM_FMTBIT_##name##BE)
|
|
static u64 endianness_format_map[] = {
|
|
ENDIANNESS_MAP(S16_),
|
|
ENDIANNESS_MAP(U16_),
|
|
ENDIANNESS_MAP(S24_),
|
|
ENDIANNESS_MAP(U24_),
|
|
ENDIANNESS_MAP(S32_),
|
|
ENDIANNESS_MAP(U32_),
|
|
ENDIANNESS_MAP(S24_3),
|
|
ENDIANNESS_MAP(U24_3),
|
|
ENDIANNESS_MAP(S20_3),
|
|
ENDIANNESS_MAP(U20_3),
|
|
ENDIANNESS_MAP(S18_3),
|
|
ENDIANNESS_MAP(U18_3),
|
|
ENDIANNESS_MAP(FLOAT_),
|
|
ENDIANNESS_MAP(FLOAT64_),
|
|
ENDIANNESS_MAP(IEC958_SUBFRAME_),
|
|
};
|
|
|
|
/*
|
|
* Fix up the DAI formats for endianness: codecs don't actually see
|
|
* the endianness of the data but we're using the CPU format
|
|
* definitions which do need to include endianness so we ensure that
|
|
* codec DAIs always have both big and little endian variants set.
|
|
*/
|
|
static void convert_endianness_formats(struct snd_soc_pcm_stream *stream)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(endianness_format_map); i++)
|
|
if (stream->formats & endianness_format_map[i])
|
|
stream->formats |= endianness_format_map[i];
|
|
}
|
|
|
|
static void snd_soc_try_rebind_card(void)
|
|
{
|
|
struct snd_soc_card *card, *c;
|
|
|
|
list_for_each_entry_safe(card, c, &unbind_card_list, list)
|
|
if (!snd_soc_bind_card(card))
|
|
list_del(&card->list);
|
|
}
|
|
|
|
int snd_soc_add_component(struct device *dev,
|
|
struct snd_soc_component *component,
|
|
const struct snd_soc_component_driver *component_driver,
|
|
struct snd_soc_dai_driver *dai_drv,
|
|
int num_dai)
|
|
{
|
|
int ret;
|
|
int i;
|
|
|
|
ret = snd_soc_component_initialize(component, component_driver, dev);
|
|
if (ret)
|
|
goto err_free;
|
|
|
|
if (component_driver->endianness) {
|
|
for (i = 0; i < num_dai; i++) {
|
|
convert_endianness_formats(&dai_drv[i].playback);
|
|
convert_endianness_formats(&dai_drv[i].capture);
|
|
}
|
|
}
|
|
|
|
ret = snd_soc_register_dais(component, dai_drv, num_dai);
|
|
if (ret < 0) {
|
|
dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret);
|
|
goto err_cleanup;
|
|
}
|
|
|
|
snd_soc_component_add(component);
|
|
snd_soc_try_rebind_card();
|
|
|
|
return 0;
|
|
|
|
err_cleanup:
|
|
snd_soc_component_cleanup(component);
|
|
err_free:
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_add_component);
|
|
|
|
int snd_soc_register_component(struct device *dev,
|
|
const struct snd_soc_component_driver *component_driver,
|
|
struct snd_soc_dai_driver *dai_drv,
|
|
int num_dai)
|
|
{
|
|
struct snd_soc_component *component;
|
|
|
|
component = devm_kzalloc(dev, sizeof(*component), GFP_KERNEL);
|
|
if (!component)
|
|
return -ENOMEM;
|
|
|
|
return snd_soc_add_component(dev, component, component_driver,
|
|
dai_drv, num_dai);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_register_component);
|
|
|
|
/**
|
|
* snd_soc_unregister_component - Unregister all related component
|
|
* from the ASoC core
|
|
*
|
|
* @dev: The device to unregister
|
|
*/
|
|
static int __snd_soc_unregister_component(struct device *dev)
|
|
{
|
|
struct snd_soc_component *component;
|
|
int found = 0;
|
|
|
|
mutex_lock(&client_mutex);
|
|
for_each_component(component) {
|
|
if (dev != component->dev)
|
|
continue;
|
|
|
|
snd_soc_tplg_component_remove(component,
|
|
SND_SOC_TPLG_INDEX_ALL);
|
|
snd_soc_component_del_unlocked(component);
|
|
found = 1;
|
|
break;
|
|
}
|
|
mutex_unlock(&client_mutex);
|
|
|
|
if (found)
|
|
snd_soc_component_cleanup(component);
|
|
|
|
return found;
|
|
}
|
|
|
|
void snd_soc_unregister_component(struct device *dev)
|
|
{
|
|
while (__snd_soc_unregister_component(dev))
|
|
;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
|
|
|
|
struct snd_soc_component *snd_soc_lookup_component(struct device *dev,
|
|
const char *driver_name)
|
|
{
|
|
struct snd_soc_component *component;
|
|
struct snd_soc_component *ret;
|
|
|
|
ret = NULL;
|
|
mutex_lock(&client_mutex);
|
|
for_each_component(component) {
|
|
if (dev != component->dev)
|
|
continue;
|
|
|
|
if (driver_name &&
|
|
(driver_name != component->driver->name) &&
|
|
(strcmp(component->driver->name, driver_name) != 0))
|
|
continue;
|
|
|
|
ret = component;
|
|
break;
|
|
}
|
|
mutex_unlock(&client_mutex);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_lookup_component);
|
|
|
|
/* Retrieve a card's name from device tree */
|
|
int snd_soc_of_parse_card_name(struct snd_soc_card *card,
|
|
const char *propname)
|
|
{
|
|
struct device_node *np;
|
|
int ret;
|
|
|
|
if (!card->dev) {
|
|
pr_err("card->dev is not set before calling %s\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
np = card->dev->of_node;
|
|
|
|
ret = of_property_read_string_index(np, propname, 0, &card->name);
|
|
/*
|
|
* EINVAL means the property does not exist. This is fine providing
|
|
* card->name was previously set, which is checked later in
|
|
* snd_soc_register_card.
|
|
*/
|
|
if (ret < 0 && ret != -EINVAL) {
|
|
dev_err(card->dev,
|
|
"ASoC: Property '%s' could not be read: %d\n",
|
|
propname, ret);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
|
|
|
|
static const struct snd_soc_dapm_widget simple_widgets[] = {
|
|
SND_SOC_DAPM_MIC("Microphone", NULL),
|
|
SND_SOC_DAPM_LINE("Line", NULL),
|
|
SND_SOC_DAPM_HP("Headphone", NULL),
|
|
SND_SOC_DAPM_SPK("Speaker", NULL),
|
|
};
|
|
|
|
int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
|
|
const char *propname)
|
|
{
|
|
struct device_node *np = card->dev->of_node;
|
|
struct snd_soc_dapm_widget *widgets;
|
|
const char *template, *wname;
|
|
int i, j, num_widgets, ret;
|
|
|
|
num_widgets = of_property_count_strings(np, propname);
|
|
if (num_widgets < 0) {
|
|
dev_err(card->dev,
|
|
"ASoC: Property '%s' does not exist\n", propname);
|
|
return -EINVAL;
|
|
}
|
|
if (num_widgets & 1) {
|
|
dev_err(card->dev,
|
|
"ASoC: Property '%s' length is not even\n", propname);
|
|
return -EINVAL;
|
|
}
|
|
|
|
num_widgets /= 2;
|
|
if (!num_widgets) {
|
|
dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
|
|
propname);
|
|
return -EINVAL;
|
|
}
|
|
|
|
widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets),
|
|
GFP_KERNEL);
|
|
if (!widgets) {
|
|
dev_err(card->dev,
|
|
"ASoC: Could not allocate memory for widgets\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
for (i = 0; i < num_widgets; i++) {
|
|
ret = of_property_read_string_index(np, propname,
|
|
2 * i, &template);
|
|
if (ret) {
|
|
dev_err(card->dev,
|
|
"ASoC: Property '%s' index %d read error:%d\n",
|
|
propname, 2 * i, ret);
|
|
return -EINVAL;
|
|
}
|
|
|
|
for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) {
|
|
if (!strncmp(template, simple_widgets[j].name,
|
|
strlen(simple_widgets[j].name))) {
|
|
widgets[i] = simple_widgets[j];
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (j >= ARRAY_SIZE(simple_widgets)) {
|
|
dev_err(card->dev,
|
|
"ASoC: DAPM widget '%s' is not supported\n",
|
|
template);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = of_property_read_string_index(np, propname,
|
|
(2 * i) + 1,
|
|
&wname);
|
|
if (ret) {
|
|
dev_err(card->dev,
|
|
"ASoC: Property '%s' index %d read error:%d\n",
|
|
propname, (2 * i) + 1, ret);
|
|
return -EINVAL;
|
|
}
|
|
|
|
widgets[i].name = wname;
|
|
}
|
|
|
|
card->of_dapm_widgets = widgets;
|
|
card->num_of_dapm_widgets = num_widgets;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets);
|
|
|
|
int snd_soc_of_get_slot_mask(struct device_node *np,
|
|
const char *prop_name,
|
|
unsigned int *mask)
|
|
{
|
|
u32 val;
|
|
const __be32 *of_slot_mask = of_get_property(np, prop_name, &val);
|
|
int i;
|
|
|
|
if (!of_slot_mask)
|
|
return 0;
|
|
val /= sizeof(u32);
|
|
for (i = 0; i < val; i++)
|
|
if (be32_to_cpup(&of_slot_mask[i]))
|
|
*mask |= (1 << i);
|
|
|
|
return val;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_of_get_slot_mask);
|
|
|
|
int snd_soc_of_parse_tdm_slot(struct device_node *np,
|
|
unsigned int *tx_mask,
|
|
unsigned int *rx_mask,
|
|
unsigned int *slots,
|
|
unsigned int *slot_width)
|
|
{
|
|
u32 val;
|
|
int ret;
|
|
|
|
if (tx_mask)
|
|
snd_soc_of_get_slot_mask(np, "dai-tdm-slot-tx-mask", tx_mask);
|
|
if (rx_mask)
|
|
snd_soc_of_get_slot_mask(np, "dai-tdm-slot-rx-mask", rx_mask);
|
|
|
|
if (of_property_read_bool(np, "dai-tdm-slot-num")) {
|
|
ret = of_property_read_u32(np, "dai-tdm-slot-num", &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (slots)
|
|
*slots = val;
|
|
}
|
|
|
|
if (of_property_read_bool(np, "dai-tdm-slot-width")) {
|
|
ret = of_property_read_u32(np, "dai-tdm-slot-width", &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (slot_width)
|
|
*slot_width = val;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot);
|
|
|
|
void snd_soc_of_parse_node_prefix(struct device_node *np,
|
|
struct snd_soc_codec_conf *codec_conf,
|
|
struct device_node *of_node,
|
|
const char *propname)
|
|
{
|
|
const char *str;
|
|
int ret;
|
|
|
|
ret = of_property_read_string(np, propname, &str);
|
|
if (ret < 0) {
|
|
/* no prefix is not error */
|
|
return;
|
|
}
|
|
|
|
codec_conf->of_node = of_node;
|
|
codec_conf->name_prefix = str;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_of_parse_node_prefix);
|
|
|
|
int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
|
|
const char *propname)
|
|
{
|
|
struct device_node *np = card->dev->of_node;
|
|
int num_routes;
|
|
struct snd_soc_dapm_route *routes;
|
|
int i, ret;
|
|
|
|
num_routes = of_property_count_strings(np, propname);
|
|
if (num_routes < 0 || num_routes & 1) {
|
|
dev_err(card->dev,
|
|
"ASoC: Property '%s' does not exist or its length is not even\n",
|
|
propname);
|
|
return -EINVAL;
|
|
}
|
|
num_routes /= 2;
|
|
if (!num_routes) {
|
|
dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
|
|
propname);
|
|
return -EINVAL;
|
|
}
|
|
|
|
routes = devm_kcalloc(card->dev, num_routes, sizeof(*routes),
|
|
GFP_KERNEL);
|
|
if (!routes) {
|
|
dev_err(card->dev,
|
|
"ASoC: Could not allocate DAPM route table\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
for (i = 0; i < num_routes; i++) {
|
|
ret = of_property_read_string_index(np, propname,
|
|
2 * i, &routes[i].sink);
|
|
if (ret) {
|
|
dev_err(card->dev,
|
|
"ASoC: Property '%s' index %d could not be read: %d\n",
|
|
propname, 2 * i, ret);
|
|
return -EINVAL;
|
|
}
|
|
ret = of_property_read_string_index(np, propname,
|
|
(2 * i) + 1, &routes[i].source);
|
|
if (ret) {
|
|
dev_err(card->dev,
|
|
"ASoC: Property '%s' index %d could not be read: %d\n",
|
|
propname, (2 * i) + 1, ret);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
card->num_of_dapm_routes = num_routes;
|
|
card->of_dapm_routes = routes;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
|
|
|
|
unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
|
|
const char *prefix,
|
|
struct device_node **bitclkmaster,
|
|
struct device_node **framemaster)
|
|
{
|
|
int ret, i;
|
|
char prop[128];
|
|
unsigned int format = 0;
|
|
int bit, frame;
|
|
const char *str;
|
|
struct {
|
|
char *name;
|
|
unsigned int val;
|
|
} of_fmt_table[] = {
|
|
{ "i2s", SND_SOC_DAIFMT_I2S },
|
|
{ "right_j", SND_SOC_DAIFMT_RIGHT_J },
|
|
{ "left_j", SND_SOC_DAIFMT_LEFT_J },
|
|
{ "dsp_a", SND_SOC_DAIFMT_DSP_A },
|
|
{ "dsp_b", SND_SOC_DAIFMT_DSP_B },
|
|
{ "ac97", SND_SOC_DAIFMT_AC97 },
|
|
{ "pdm", SND_SOC_DAIFMT_PDM},
|
|
{ "msb", SND_SOC_DAIFMT_MSB },
|
|
{ "lsb", SND_SOC_DAIFMT_LSB },
|
|
};
|
|
|
|
if (!prefix)
|
|
prefix = "";
|
|
|
|
/*
|
|
* check "dai-format = xxx"
|
|
* or "[prefix]format = xxx"
|
|
* SND_SOC_DAIFMT_FORMAT_MASK area
|
|
*/
|
|
ret = of_property_read_string(np, "dai-format", &str);
|
|
if (ret < 0) {
|
|
snprintf(prop, sizeof(prop), "%sformat", prefix);
|
|
ret = of_property_read_string(np, prop, &str);
|
|
}
|
|
if (ret == 0) {
|
|
for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
|
|
if (strcmp(str, of_fmt_table[i].name) == 0) {
|
|
format |= of_fmt_table[i].val;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* check "[prefix]continuous-clock"
|
|
* SND_SOC_DAIFMT_CLOCK_MASK area
|
|
*/
|
|
snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
|
|
if (of_property_read_bool(np, prop))
|
|
format |= SND_SOC_DAIFMT_CONT;
|
|
else
|
|
format |= SND_SOC_DAIFMT_GATED;
|
|
|
|
/*
|
|
* check "[prefix]bitclock-inversion"
|
|
* check "[prefix]frame-inversion"
|
|
* SND_SOC_DAIFMT_INV_MASK area
|
|
*/
|
|
snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
|
|
bit = !!of_get_property(np, prop, NULL);
|
|
|
|
snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
|
|
frame = !!of_get_property(np, prop, NULL);
|
|
|
|
switch ((bit << 4) + frame) {
|
|
case 0x11:
|
|
format |= SND_SOC_DAIFMT_IB_IF;
|
|
break;
|
|
case 0x10:
|
|
format |= SND_SOC_DAIFMT_IB_NF;
|
|
break;
|
|
case 0x01:
|
|
format |= SND_SOC_DAIFMT_NB_IF;
|
|
break;
|
|
default:
|
|
/* SND_SOC_DAIFMT_NB_NF is default */
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* check "[prefix]bitclock-master"
|
|
* check "[prefix]frame-master"
|
|
* SND_SOC_DAIFMT_MASTER_MASK area
|
|
*/
|
|
snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
|
|
bit = !!of_get_property(np, prop, NULL);
|
|
if (bit && bitclkmaster)
|
|
*bitclkmaster = of_parse_phandle(np, prop, 0);
|
|
|
|
snprintf(prop, sizeof(prop), "%sframe-master", prefix);
|
|
frame = !!of_get_property(np, prop, NULL);
|
|
if (frame && framemaster)
|
|
*framemaster = of_parse_phandle(np, prop, 0);
|
|
|
|
switch ((bit << 4) + frame) {
|
|
case 0x11:
|
|
format |= SND_SOC_DAIFMT_CBM_CFM;
|
|
break;
|
|
case 0x10:
|
|
format |= SND_SOC_DAIFMT_CBM_CFS;
|
|
break;
|
|
case 0x01:
|
|
format |= SND_SOC_DAIFMT_CBS_CFM;
|
|
break;
|
|
default:
|
|
format |= SND_SOC_DAIFMT_CBS_CFS;
|
|
break;
|
|
}
|
|
|
|
return format;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
|
|
|
|
int snd_soc_get_dai_id(struct device_node *ep)
|
|
{
|
|
struct snd_soc_component *component;
|
|
struct snd_soc_dai_link_component dlc;
|
|
int ret;
|
|
|
|
dlc.of_node = of_graph_get_port_parent(ep);
|
|
dlc.name = NULL;
|
|
/*
|
|
* For example HDMI case, HDMI has video/sound port,
|
|
* but ALSA SoC needs sound port number only.
|
|
* Thus counting HDMI DT port/endpoint doesn't work.
|
|
* Then, it should have .of_xlate_dai_id
|
|
*/
|
|
ret = -ENOTSUPP;
|
|
mutex_lock(&client_mutex);
|
|
component = soc_find_component(&dlc);
|
|
if (component)
|
|
ret = snd_soc_component_of_xlate_dai_id(component, ep);
|
|
mutex_unlock(&client_mutex);
|
|
|
|
of_node_put(dlc.of_node);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_get_dai_id);
|
|
|
|
int snd_soc_get_dai_name(struct of_phandle_args *args,
|
|
const char **dai_name)
|
|
{
|
|
struct snd_soc_component *pos;
|
|
struct device_node *component_of_node;
|
|
int ret = -EPROBE_DEFER;
|
|
|
|
mutex_lock(&client_mutex);
|
|
for_each_component(pos) {
|
|
component_of_node = soc_component_to_node(pos);
|
|
|
|
if (component_of_node != args->np)
|
|
continue;
|
|
|
|
ret = snd_soc_component_of_xlate_dai_name(pos, args, dai_name);
|
|
if (ret == -ENOTSUPP) {
|
|
struct snd_soc_dai *dai;
|
|
int id = -1;
|
|
|
|
switch (args->args_count) {
|
|
case 0:
|
|
id = 0; /* same as dai_drv[0] */
|
|
break;
|
|
case 1:
|
|
id = args->args[0];
|
|
break;
|
|
default:
|
|
/* not supported */
|
|
break;
|
|
}
|
|
|
|
if (id < 0 || id >= pos->num_dai) {
|
|
ret = -EINVAL;
|
|
continue;
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
/* find target DAI */
|
|
for_each_component_dais(pos, dai) {
|
|
if (id == 0)
|
|
break;
|
|
id--;
|
|
}
|
|
|
|
*dai_name = dai->driver->name;
|
|
if (!*dai_name)
|
|
*dai_name = pos->name;
|
|
}
|
|
|
|
break;
|
|
}
|
|
mutex_unlock(&client_mutex);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_get_dai_name);
|
|
|
|
int snd_soc_of_get_dai_name(struct device_node *of_node,
|
|
const char **dai_name)
|
|
{
|
|
struct of_phandle_args args;
|
|
int ret;
|
|
|
|
ret = of_parse_phandle_with_args(of_node, "sound-dai",
|
|
"#sound-dai-cells", 0, &args);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = snd_soc_get_dai_name(&args, dai_name);
|
|
|
|
of_node_put(args.np);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
|
|
|
|
/*
|
|
* snd_soc_of_put_dai_link_codecs - Dereference device nodes in the codecs array
|
|
* @dai_link: DAI link
|
|
*
|
|
* Dereference device nodes acquired by snd_soc_of_get_dai_link_codecs().
|
|
*/
|
|
void snd_soc_of_put_dai_link_codecs(struct snd_soc_dai_link *dai_link)
|
|
{
|
|
struct snd_soc_dai_link_component *component;
|
|
int index;
|
|
|
|
for_each_link_codecs(dai_link, index, component) {
|
|
if (!component->of_node)
|
|
break;
|
|
of_node_put(component->of_node);
|
|
component->of_node = NULL;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_of_put_dai_link_codecs);
|
|
|
|
/*
|
|
* snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
|
|
* @dev: Card device
|
|
* @of_node: Device node
|
|
* @dai_link: DAI link
|
|
*
|
|
* Builds an array of CODEC DAI components from the DAI link property
|
|
* 'sound-dai'.
|
|
* The array is set in the DAI link and the number of DAIs is set accordingly.
|
|
* The device nodes in the array (of_node) must be dereferenced by calling
|
|
* snd_soc_of_put_dai_link_codecs() on @dai_link.
|
|
*
|
|
* Returns 0 for success
|
|
*/
|
|
int snd_soc_of_get_dai_link_codecs(struct device *dev,
|
|
struct device_node *of_node,
|
|
struct snd_soc_dai_link *dai_link)
|
|
{
|
|
struct of_phandle_args args;
|
|
struct snd_soc_dai_link_component *component;
|
|
char *name;
|
|
int index, num_codecs, ret;
|
|
|
|
/* Count the number of CODECs */
|
|
name = "sound-dai";
|
|
num_codecs = of_count_phandle_with_args(of_node, name,
|
|
"#sound-dai-cells");
|
|
if (num_codecs <= 0) {
|
|
if (num_codecs == -ENOENT)
|
|
dev_err(dev, "No 'sound-dai' property\n");
|
|
else
|
|
dev_err(dev, "Bad phandle in 'sound-dai'\n");
|
|
return num_codecs;
|
|
}
|
|
component = devm_kcalloc(dev,
|
|
num_codecs, sizeof(*component),
|
|
GFP_KERNEL);
|
|
if (!component)
|
|
return -ENOMEM;
|
|
dai_link->codecs = component;
|
|
dai_link->num_codecs = num_codecs;
|
|
|
|
/* Parse the list */
|
|
for_each_link_codecs(dai_link, index, component) {
|
|
ret = of_parse_phandle_with_args(of_node, name,
|
|
"#sound-dai-cells",
|
|
index, &args);
|
|
if (ret)
|
|
goto err;
|
|
component->of_node = args.np;
|
|
ret = snd_soc_get_dai_name(&args, &component->dai_name);
|
|
if (ret < 0)
|
|
goto err;
|
|
}
|
|
return 0;
|
|
err:
|
|
snd_soc_of_put_dai_link_codecs(dai_link);
|
|
dai_link->codecs = NULL;
|
|
dai_link->num_codecs = 0;
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs);
|
|
|
|
static int __init snd_soc_init(void)
|
|
{
|
|
snd_soc_debugfs_init();
|
|
snd_soc_util_init();
|
|
|
|
return platform_driver_register(&soc_driver);
|
|
}
|
|
module_init(snd_soc_init);
|
|
|
|
static void __exit snd_soc_exit(void)
|
|
{
|
|
snd_soc_util_exit();
|
|
snd_soc_debugfs_exit();
|
|
|
|
platform_driver_unregister(&soc_driver);
|
|
}
|
|
module_exit(snd_soc_exit);
|
|
|
|
/* Module information */
|
|
MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
|
|
MODULE_DESCRIPTION("ALSA SoC Core");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:soc-audio");
|