Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
The Power Manager uses the following IOCTL codes to communicate with a device.
| IOCTL | Description |
|---|---|
| IOCTL_POWER_CAPABILITIES | Request that the device inform Power Manager which power states it supports and what their characteristics are. |
| IOCTL_POWER_SET | Request that the device update its device power state. |
| IOCTL_POWER_QUERY | Ask the device if it is ready to go into a new device power state. |
| IOCTL_POWER_GET | Request that the device inform Power Manager of its current device power state. |
| IOCTL_REGISTER_POWER_RELATIONSHIP | Notifies the parent device to register all devices it controls. |
See Also
Send Feedback on this topic to the authors