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In PD state machine, we often need to do "go to X state, and if after Y ms we are still in X state, go to Z state." However, we do this in a way that are suspectible to premature timeout if PD task is waken at an unfortunate time. Let's add methods to set the state w/ or w/o timeout to prevent this. BUG=None TEST=Boot on samus. Plug in zinger, and check we have 20V power. BRANCH=None Change-Id: I91db44ef71e31007eef4edd0f826bf81505e51e5 Signed-off-by: Vic Yang <victoryang@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/210874 Reviewed-by: Alec Berg <alecaberg@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit