SND_DEVICE_NEW(9) Management of Cards and Device SND_DEVICE_NEW(9)NAME
snd_device_new - create an ALSA device component
int snd_device_new(struct snd_card * card, snd_device_type_t type, void * device_data, struct snd_device_ops * ops);
the card instance
the device type, SNDRV_DEV_XXX
the data pointer of this device
the operator table
Creates a new device component for the given data pointer. The device will be assigned to the card and managed together by the card.
The data pointer plays a role as the identifier, too, so the pointer address must be unique and unchanged.
Zero if successful, or a negative error code on failure.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 SND_DEVICE_NEW(9)
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DEVICE_CREATE_WITH_G(9) Device drivers infrastructure DEVICE_CREATE_WITH_G(9)NAME
device_create_with_groups - creates a device and registers it with sysfs
struct device * device_create_with_groups(struct class * class, struct device * parent, dev_t devt, void * drvdata,
const struct attribute_group ** groups, const char * fmt, ...);
pointer to the struct class that this device should be registered to
pointer to the parent struct device of this new device, if any
the dev_t for the char device to be added
the data to be added to the device for callbacks
NULL-terminated list of attribute groups to be created
string for the device's name
This function can be used by char device classes. A struct device will be created in sysfs, registered to the specified class. Additional
attributes specified in the groups parameter will also be created automatically.
A "dev" file will be created, showing the dev_t for the device, if the dev_t is not 0,0. If a pointer to a parent struct device is passed
in, the newly created struct device will be a child of that device in sysfs. The pointer to the struct device will be returned from the
call. Any further sysfs files that might be required can be created using this pointer.
Returns struct device pointer on success, or ERR_PTR on error.
the struct class passed to this function must have previously been created with a call to class_create.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 DEVICE_CREATE_WITH_G(9)
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