tree bf1911234e5906757f80496b754a27a6e08eb748
parent 93a4ab2fa2efd8908c30298796af710c1ec0f85f
author Jeff Brown <jeffbrown@google.com> 1357785997 -0800
committer Jeff Brown <jeffbrown@google.com> 1357840916 -0800

Improve heuristics for detecting wireless chargers.

On some devices, we need to apply heuristics to determine whether
the device is docked on a wireless charger because the charging
circuits do not provide sufficient information to know whether
the device is on the charger unless it is actually receiving
power.

The previous heuristics only considered the battery level to
suppress spurious dock signals.

The new heuristics also take into account whether the device
appears to have moved from its previous position on the dock.

Bug: 7744185
Change-Id: I5ba885dac25b37840b6db46b8a0f30968a06776c