1DEVICE_CREATE(9)         Device drivers infrastructure        DEVICE_CREATE(9)
2
3
4

NAME

6       device_create - creates a device and registers it with sysfs
7

SYNOPSIS

9       struct device * device_create(struct class * class,
10                                     struct device * parent, dev_t devt,
11                                     void * drvdata, const char * fmt, ...);
12

ARGUMENTS

14       class
15           pointer to the struct class that this device should be registered
16           to
17
18       parent
19           pointer to the parent struct device of this new device, if any
20
21       devt
22           the dev_t for the char device to be added
23
24       drvdata
25           the data to be added to the device for callbacks
26
27       fmt
28           string for the device's name
29
30       ...
31           variable arguments
32

DESCRIPTION

34       This function can be used by char device classes. A struct device will
35       be created in sysfs, registered to the specified class.
36
37       A “dev” file will be created, showing the dev_t for the device, if the
38       dev_t is not 0,0. If a pointer to a parent struct device is passed in,
39       the newly created struct device will be a child of that device in
40       sysfs. The pointer to the struct device will be returned from the call.
41       Any further sysfs files that might be required can be created using
42       this pointer.
43
44       Returns struct device pointer on success, or ERR_PTR on error.
45

NOTE

47       the struct class passed to this function must have previously been
48       created with a call to class_create.
49

51Kernel Hackers Manual 3.10         June 2019                  DEVICE_CREATE(9)
Impressum