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ALSA: hda - Make snd_hda_bus_type public

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Define the common hd-audio driver and device types to bind over
snd_hda_bus_type publicly.  This allows to implement other type of
device and driver code over hd-audio bus.

Now both struct hda_codec and struct hda_codec_driver inherit these
new struct hdac_device and struct hdac_driver, respectively.

The bus registration is done in subsys_initcall() to assure it
before any other driver registrations.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2015-02-17 21:46:37 +01:00
parent 3372dbdd8c
commit e3d280fc6d
10 changed files with 113 additions and 40 deletions
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47
sound/pci/hda/hda_bind.c
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@@ -47,11 +47,11 @@ static struct hda_vendor_id hda_vendor_ids[] = {
/*
* find a matching codec preset
*/
static int hda_bus_match(struct device *dev, struct device_driver *drv)
static int hda_codec_match(struct hdac_device *dev, struct hdac_driver *drv)
{
struct hda_codec *codec = container_of(dev, struct hda_codec, dev);
struct hda_codec *codec = container_of(dev, struct hda_codec, core);
struct hda_codec_driver *driver =
container_of(drv, struct hda_codec_driver, driver);
container_of(drv, struct hda_codec_driver, core);
const struct hda_codec_preset *preset;
/* check probe_id instead of vendor_id if set */
u32 id = codec->probe_id ? codec->probe_id : codec->vendor_id;
@@ -154,20 +154,22 @@ static void hda_codec_driver_shutdown(struct device *dev)
int __hda_codec_driver_register(struct hda_codec_driver *drv, const char *name,
struct module *owner)
{
drv->driver.name = name;
drv->driver.owner = owner;
drv->driver.bus = &snd_hda_bus_type;
drv->driver.probe = hda_codec_driver_probe;
drv->driver.remove = hda_codec_driver_remove;
drv->driver.shutdown = hda_codec_driver_shutdown;
drv->driver.pm = &hda_codec_driver_pm;
return driver_register(&drv->driver);
drv->core.driver.name = name;
drv->core.driver.owner = owner;
drv->core.driver.bus = &snd_hda_bus_type;
drv->core.driver.probe = hda_codec_driver_probe;
drv->core.driver.remove = hda_codec_driver_remove;
drv->core.driver.shutdown = hda_codec_driver_shutdown;
drv->core.driver.pm = &hda_codec_driver_pm;
drv->core.type = HDA_DEV_LEGACY;
drv->core.match = hda_codec_match;
return driver_register(&drv->core.driver);
}
EXPORT_SYMBOL_GPL(__hda_codec_driver_register);
void hda_codec_driver_unregister(struct hda_codec_driver *drv)
{
driver_unregister(&drv->driver);
driver_unregister(&drv->core.driver);
}
EXPORT_SYMBOL_GPL(hda_codec_driver_unregister);
@@ -319,24 +321,3 @@ int snd_hda_codec_configure(struct hda_codec *codec)
return err;
}
EXPORT_SYMBOL_GPL(snd_hda_codec_configure);
/*
* bus registration
*/
struct bus_type snd_hda_bus_type = {
.name = "hdaudio",
.match = hda_bus_match,
};
static int __init hda_codec_init(void)
{
return bus_register(&snd_hda_bus_type);
}
static void __exit hda_codec_exit(void)
{
bus_unregister(&snd_hda_bus_type);
}
module_init(hda_codec_init);
module_exit(hda_codec_exit);