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When the battery gets to returns the FULL flag, bd99956 charging is disabled and battery learning is enabled. This state will remain until the FULL flag is cleared by the battery. The original fix had this level at 97%, but on the various batteries tested this appears to happen at 95%. The CONFIG_BATTERY_LEVEL_NEAR_FULL allows an adjustment for this level and is only used for LED states. BUG=b:64192049 BRANCH=None TEST=Manual Let system charge to 100% when FULL flag is set in the battery, verified the LED was in correct state. Then let battery drain until the FULL flag is clear and observe that the battery requests charge current. The LED stays in the expected full charge state. Change-Id: I74d26abd5d8021bcfacdc3a4c3d4baba6a978bca Signed-off-by: Scott Collyer <scollyer@google.com> Reviewed-on: https://chromium-review.googlesource.com/693386 Commit-Ready: Scott Collyer <scollyer@chromium.org> Tested-by: Scott Collyer <scollyer@chromium.org> Reviewed-by: Aaron Durbin <adurbin@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