Linux Device Drivers Development

The device driver

A global device hierarchy allows each device in the system to be represented in a common way. This allows the core to easily walk the DT to create such things as properly ordered power management transitions:

struct device_driver { 
    const char *name; 
    struct bus_type *bus; 
    struct module *owner; 
 
    const struct of_device_id   *of_match_table; 
    const struct acpi_device_id  *acpi_match_table; 
 
    int (*probe) (struct device *dev); 
    int (*remove) (struct device *dev); 
    void (*shutdown) (struct device *dev); 
    int (*suspend) (struct device *dev, pm_message_t state); 
    int (*resume) (struct device *dev); 
    const struct attribute_group **groups; 
    const struct dev_pm_ops *pm; 
}; 

struct device_driver defines a simple set of operations for the core to ...