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ASoC: Consolidate snd_soc_register_dai() and snd_soc_register_dais()

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snd_soc_register_dais() has basically the same code as snd_soc_register_dai(),
but running in a loop. The only difference is that snd_soc_register_dai() calls
fmt_single_name() to generate the DAIs name and snd_soc_register_dais() calls
fmt_multiple_name(). This patch pushes the check in __snd_soc_register_component()
which decides whether to call snd_soc_register_dai() or snd_soc_register_dais()
to snd_soc_register_dais() to decide which naming scheme to use. This allows us
to remove snd_soc_register_dai().

The patch also updates snd_soc_register_dais() to unregister every DAI it finds
for the component rather than trying to unregister one DAI for each DAI that was
registered. Both have the same result since there won't be more DAIs than what
have been registered, but the former is easier to implement.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Lars-Peter Clausen 2014-03-09 17:41:45 +01:00 committed by Mark Brown
parent a707d030da
commit 32c9ba544b
1 changed files with 42 additions and 112 deletions
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194
sound/soc/soc-core.c
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@ -3906,34 +3906,84 @@ static inline char *fmt_multiple_name(struct device *dev,
}
/**
* snd_soc_register_dai - Register a DAI with the ASoC core
* 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;
mutex_lock(&client_mutex);
list_for_each_entry_safe(dai, _dai, &dai_list, list) {
if (dai->dev != component->dev)
continue;
list_del(&dai->list);
dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
dai->name);
kfree(dai->name);
kfree(dai);
}
mutex_unlock(&client_mutex);
}
/**
* 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
* @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
* parent's name.
*/
static int snd_soc_register_dai(struct snd_soc_component *component,
struct snd_soc_dai_driver *dai_drv)
static int snd_soc_register_dais(struct snd_soc_component *component,
struct snd_soc_dai_driver *dai_drv, size_t count,
bool legacy_dai_naming)
{
struct device *dev = component->dev;
struct snd_soc_codec *codec;
struct snd_soc_dai *dai;
unsigned int i;
int ret;
dev_dbg(dev, "ASoC: dai register %s\n", dev_name(dev));
dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
for (i = 0; i < count; i++) {
dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
if (dai == NULL)
return -ENOMEM;
if (dai == NULL) {
ret = -ENOMEM;
goto err;
}
/* create DAI component name */
/*
* 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 (count == 1 && legacy_dai_naming) {
dai->name = fmt_single_name(dev, &dai->id);
} else {
dai->name = fmt_multiple_name(dev, &dai_drv[i]);
if (dai_drv[i].id)
dai->id = dai_drv[i].id;
else
dai->id = i;
}
if (dai->name == NULL) {
kfree(dai);
return -ENOMEM;
ret = -ENOMEM;
goto err;
}
dai->component = component;
dai->dev = dev;
dai->driver = dai_drv;
dai->driver = &dai_drv[i];
dai->dapm.dev = dev;
if (!dai->driver->ops)
dai->driver->ops = &null_dai_ops;
@ -3957,124 +4007,16 @@ static int snd_soc_register_dai(struct snd_soc_component *component,
mutex_unlock(&client_mutex);
dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
return 0;
}
/**
* snd_soc_unregister_dai - Unregister a DAI from the ASoC core
*
* @dai: DAI to unregister
*/
static void snd_soc_unregister_dai(struct device *dev)
{
struct snd_soc_dai *dai;
list_for_each_entry(dai, &dai_list, list) {
if (dev == dai->dev)
goto found;
}
return;
found:
mutex_lock(&client_mutex);
list_del(&dai->list);
mutex_unlock(&client_mutex);
dev_dbg(dev, "ASoC: Unregistered DAI '%s'\n", dai->name);
kfree(dai->name);
kfree(dai);
}
/**
* snd_soc_register_dais - Register multiple DAIs 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_codec *codec;
struct snd_soc_dai *dai;
int i, ret = 0;
dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
for (i = 0; i < count; i++) {
dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
if (dai == NULL) {
ret = -ENOMEM;
goto err;
}
/* create DAI component name */
dai->name = fmt_multiple_name(dev, &dai_drv[i]);
if (dai->name == NULL) {
kfree(dai);
ret = -EINVAL;
goto err;
}
dai->component = component;
dai->dev = dev;
dai->driver = &dai_drv[i];
if (dai->driver->id)
dai->id = dai->driver->id;
else
dai->id = i;
dai->dapm.dev = dev;
if (!dai->driver->ops)
dai->driver->ops = &null_dai_ops;
mutex_lock(&client_mutex);
list_for_each_entry(codec, &codec_list, list) {
if (codec->dev == dev) {
dev_dbg(dev,
"ASoC: Mapped DAI %s to CODEC %s\n",
dai->name, codec->name);
dai->codec = codec;
break;
}
}
if (!dai->codec)
dai->dapm.idle_bias_off = 1;
list_add(&dai->list, &dai_list);
mutex_unlock(&client_mutex);
dev_dbg(dai->dev, "ASoC: Registered DAI '%s'\n", dai->name);
}
return 0;
err:
for (i--; i >= 0; i--)
snd_soc_unregister_dai(dev);
snd_soc_unregister_dais(component);
return ret;
}
/**
* snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
*
* @dai: Array of DAIs to unregister
* @count: Number of DAIs
*/
static void snd_soc_unregister_dais(struct device *dev, size_t count)
{
int i;
for (i = 0; i < count; i++)
snd_soc_unregister_dai(dev);
}
/**
* snd_soc_register_component - Register a component with the ASoC core
*
@ -4106,19 +4048,7 @@ __snd_soc_register_component(struct device *dev,
cmpnt->dai_drv = dai_drv;
cmpnt->num_dai = num_dai;
/*
* snd_soc_register_dai() uses fmt_single_name(), and
* snd_soc_register_dais() uses fmt_multiple_name()
* for dai->name which is used for name based matching
*
* this function is used from cpu/codec.
* allow_single_dai flag can ignore "codec" driver reworking
* since it had been used snd_soc_register_dais(),
*/
if ((1 == num_dai) && allow_single_dai)
ret = snd_soc_register_dai(cmpnt, dai_drv);
else
ret = snd_soc_register_dais(cmpnt, dai_drv, num_dai);
ret = snd_soc_register_dais(cmpnt, dai_drv, num_dai, allow_single_dai);
if (ret < 0) {
dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret);
goto error_component_name;
@ -4173,7 +4103,7 @@ void snd_soc_unregister_component(struct device *dev)
return;
found:
snd_soc_unregister_dais(dev, cmpnt->num_dai);
snd_soc_unregister_dais(cmpnt);
mutex_lock(&client_mutex);
list_del(&cmpnt->list);