Linux Device Drivers Development

The device

The struct device is the generic data structure used to describe and characterize each device on the system, whether it is physical or not. It contains details about the physical attributes of the device, and provides proper linkage information to build suitable device trees and reference counting:

struct device { 
    struct device *parent; 
    struct kobject kobj; 
    const struct device_type *type; 
    struct bus_type      *bus; 
    struct device_driver *driver; 
    void    *platform_data; 
    void *driver_data; 
    struct device_node      *of_node; 
    struct class *class; 
    const struct attribute_group **groups; 
    void (*release)(struct device *dev); 
}; 

• * parent represents the device's parent, used to build a device tree hierarchy. When registered with a bus, the bus driver ...