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07e19270f6
Previously, the base power was enabled when the base was detected by the lid. However, we should only power the base when the AP is on since it just wastes power otherwise. This commit adds a pair of chipset hooks to kick the state machine on startup and disable it on shutdown. BUG=None BRANCH=None TEST=Flash meowth, attach base with AP off, verify that base power is not enabled. TEST=Remove base and attach base, verify that base power is disabled when removed and enabled when attached. TEST=Shut AP down, verify that base power is disabled. TEST=Remove base and attach base, verify that base power remains disabled. TEST=Power on AP with base detached, verify that base power remains off. Change-Id: I4379789987dbe91c72d699c4d184b5c5cc812e5f Signed-off-by: Aseda Aboagye <aaboagye@google.com> Reviewed-on: https://chromium-review.googlesource.com/1020525 Commit-Ready: Aseda Aboagye <aaboagye@chromium.org> Tested-by: Aseda Aboagye <aaboagye@chromium.org> Reviewed-by: Furquan Shaikh <furquan@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit For instructions on building from source, refer to http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly