We already shut down the main processor below 3%. Hibernating the EC
below 2% will further cut power draw and minimize the risk of
deep-discharging the battery.
BUG=chrome-os-partner:14839
BRANCH=link
TEST=manual
1) discharge battery below 3%; system should shut down. when powered
on again it should shut back down within ~10 sec.
2) discharge battery below 2%; when system shuts down it should also hibernate.
(I've also tested this with a hacked smart_battery.c which lies about
the battery state of charge, since that's faster than waiting for my
battery to discharge.)
Change-Id: I504ba927012430db5cf10b895a36e6cd6fdf4c8b
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/34793
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
fcd0f0a5e4