[Bug 222667] [psm] HP EliteBook 9470m: Synaptics touchpad detected as Generic PS/2 Mouse

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=222667

            Bug ID: 222667
           Summary: [psm] HP EliteBook 9470m: Synaptics touchpad detected
                    as Generic PS/2 Mouse
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: neel at neelc.org

Created attachment 186785
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=186785&action=edit
DSDT file for HP EliteBook 9470m

On my HP EliteBook 9470m, the Synaptics touchpad is detected as a Generic PS/2
Mouse.

dmesg snippet:

psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: model Generic PS/2 mouse, device ID 0

This is similar to Bug 214480 about the 2570p (I no longer have that laptop),
except that the 9470m detects the touchpad as a Generic PS/2 Mouse.

The DSDT file is attached.

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