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+What: /sys/devices/platform/dock.<N>/docked
+Date: Dec, 2006
+KernelVersion: 2.6.19
+Contact: linux-acpi@vger.kernel.org
+Description:
+ (RO) Value 1 or 0 indicates whether the software believes the
+ laptop is docked in a docking station.
+
+What: /sys/devices/platform/dock.<N>/undock
+Date: Dec, 2006
+KernelVersion: 2.6.19
+Contact: linux-acpi@vger.kernel.org
+Description:
+ (WO) Writing to this file causes the software to initiate an
+ undock request to the firmware.
+
+What: /sys/devices/platform/dock.<N>/uid
+Date: Feb, 2007
+KernelVersion: v2.6.21
+Contact: linux-acpi@vger.kernel.org
+Description:
+ (RO) Displays the docking station the laptop is docked to.
+
+What: /sys/devices/platform/dock.<N>/flags
+Date: May, 2007
+KernelVersion: v2.6.21
+Contact: linux-acpi@vger.kernel.org
+Description:
+ (RO) Show dock station flags, useful for checking if undock
+ request has been made by the user (from the immediate_undock
+ option).
+
+What: /sys/devices/platform/dock.<N>/type
+Date: Aug, 2008
+KernelVersion: v2.6.27
+Contact: linux-acpi@vger.kernel.org
+Description:
+ (RO) Display the dock station type- dock_station, ata_bay or
+ battery_bay.