Advanced Configuration and Power Interface Specification

Advanced Configuration and Power Interface Specification
screen, and its origin is in the lower-left corner when the display is viewed in the Portrait orientation.
For example, the Right Panel is the right side of the system as viewed from the front.
All “origin” references for a Panel are interpreted as its lower left corner when the user is facing the
respective Panel. The Top Panel shall be viewed with the system is viewed resting on its Front Panel,
and the Bottom Panel shall be viewed with the system resting on its Back Panel. All other Panels
shall be viewed with the system resting on its Bottom Panel. Refer to Figure 6-33 for more
information.
Figure 6-33 System Panel and Panel Origin Positions
Top
Top
Panel
Origin
Back
Panel
Left
Panel
Origin
Front
Panel
Origin
Right
Panel
Origin
Bottom
Origin
Bottom
Panel
Origin
The data bits also assume that if the system is capable of opening up like a laptop that the device
may exist on the base of the laptop system or on the lid. In the case of the latter, the “Lid” bit
(described below) should be set indicating the device connection point is on the lid. If the device is
on the lid, the description describes the device’s connection point location when the system is
opened with the lid up. If the device connection point is not on the lid, then the description describes
the device’s connection point location when the system with the lid closed.
Figure 6-34 Laptop Panel and Panel Origin Positions
Lid
Front Panel
Origin
(base)
Front Panel
Origin
Front
Panel
Lid
(base)
Top Panel
Origin
To render a view of a system Panel, all _PLDs that define the same Panel and Lid values are
collected. The _PLDs are then sorted by the value of their Order field and the view of the panel is
rendered by drawing the shapes of each connection point (in their correct Shape, Color, Horizontal
Offset, Vertical Offset, Width, Height, and Orientation) starting with all Order = 0 _PLDs first.
Refer to Figure 6-36 for an example.
The location of a device connection point may change as a result of the system connecting or
disconnecting to a docking station or a port replicator. As such, Notify event of type 0x09 will cause
OSPM to re-evaluate the _PLD object residing under the particular device notified. If a platform is
284 April, 2015 Version 6.0