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UNDO ASUS DRIVER UPDATE REGISTRATION
UNDO ASUS DRIVER UPDATE WINDOWS 8

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The following section talks about registering a WDM based HID Minidriver but much of it is pertinent to a KMDF based Frameworks driver also.

UMDF-based HID minidriver, see Creating UMDF-based HID Minidrivers.

KMDF-based HID minidriver, see Creating Framework-based HID Minidrivers.

For more information on each of the driver models, please visit the following sections:

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Microsoft recommends using a Frameworks based solution (KMDF or UMDF (on Windows 8 only)). HID minidrivers can be built using one of the following frameworks:

Operation of a HID minidriverДЄ HID transport minidriver abstracts the operation of a hardware bus or port that your input device attaches to. The HID class driver does not send the following requests to the HID minidriver: create, close, or device control. In addition, when the I/O manager sends Plug and Play, power, or system control requests to the HID class driver for an FDO, the HID class driver processes the request, and calls the HID minidriver's corresponding dispatch routine. To operate a device, the HID class driver primarily calls the HID minidriver dispatch routine for internal device control requests. When the HID class driver Unload routine is called, the HID class driver completes releasing all resources associated with FDO and calls the HID minidriver's Unload routine. If the HID minidriver AddDevice routine is not successful, the HID class driver deletes the FDO and returns the status returned by the HID minidriver AddDevice routine. The HID minidriver AddDevice routine does internal device-specific initialization and, if successful, returns STATUS_SUCCESS. When the HID class driver's AddDevice routine is called to create a functional device object ( FDO), the HID class driver creates the FDO, initializes it, and calls the HID minidriver AddDevice routine. The HID class driver communicates with a HID minidriver by calling the HID minidriver's AddDevice, Unload, and dispatch routines as follows: Calling the AddDevice Routine Although the memory is allocated by the HID class driver, only the HID minidriver uses this device extension.

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The registration process also allocates memory for the HID mindriver device extension. The HID class driver supplies the following standard driver routines:Дispatch routines for the following I/O requests: Resets the entry points in the minidriver's driver object to the entry points for the standard driver routines supplied by the HID class driver. The HID minidriver sets these entry points before it registers with the HID class driver. Saves a copy of the entry points (pointers) to the HID minidriver's standard driver routines in the HID class driver's device extension.ДЄ HID minidriver sets its entry points in the driver object that the minidriver receives as input to its DriverEntry routine. The registration operation does the following: The HID class driver creates a physical device object ( PDO) for each HID collection supported by an input device and manages the collection's operation.ДЄ HID minidriver binds its operation to the HID class driver by calling HidRegisterMinidriver to register itself with the HID class driver. Provides the functionality of a bus driver for the child devices (HID collections) supported by an underlying input device. The upper-level interface to HID collections consists of the HID class driver IOCTLs, the HIDClass support routines, and the HIDClass structures.Д¬ommunicates with a HID minidriver by calling the minidriver's standard driver routines.Д¬reates a functional device object ( FDO) for HIDClass input devices enumerated by a lower-level bus or port driver.ДЇor example, the HID class driver creates and manages the operations of an FDO that represents a USB HID device enumerated by the system-supplied USB driver stack.

It manages the different data protocols that are used by different input devices and input queues that support more than one open file on the same HID collection.

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The HID class driver transparently manages and routes all communication between upper-level drivers and applications and the underlying input devices that support HID collections. Provides and manages the upper-level interface that kernel-mode drivers and user-mode applications use to access the HID collections that an input device supports. Operational features of the HID class driver

See Creating WDF HID minidrivers for more information.

Binding the operation of the HID class driver to a HID minidriver.

Operational features of the HID class driver.

The section includes the following topics about the operation of the HID class driver:

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