ACM Driver Functions

The following table shows the ACM functions and their associated calls.

Programming element	Description
ACM_IOControl	Called by the ACM to pass messages to and receive information from the driver.
ACM_Init	Called by the Device Manager when the driver is loaded.
ACM_Deinit	Called by the Device Manager when the driver is unloaded.
ACM_Open	Called by the ACM when the driver is opened for use.
ACM_Close	Called by the ACM when the driver is no longer needed.
ACM_Read	Never called.
ACM_Write	Never called.
ACM_Seek	Never called.
ACM_PowerUp	Called by the Device Manager when the system resumes from the suspend state.
ACM_PowerDown	Called by the Device Manager when the system enters the suspend state.

Additional resources