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After we set TE (CL:958295), rt946x terminates charging when the charge current is below IEOC in constant-voltage mode. When AC is plugged and rt946x terminates, we see cases that battery SOC falls below BATTERY_LEVEL_NEAR_FULL but rt946x doesn't re-enable charging yet, which leads to amber LED. The Chrome OS UI might also show battery is not full in this case. Let's clamp the reported battery SOC in this scenario to avoid user confusion. BUG=b:77870927 BRANCH=scarlet TEST=When AC is on, charge terminates, and BATTERY_LEVEL_NEAR_FULL is hit, confirm battery SOC is overwritten. Change-Id: I4575e562873d149d6f349ddb578334d107e21776 Signed-off-by: Philip Chen <philipchen@google.com> Reviewed-on: https://chromium-review.googlesource.com/1055194 Commit-Ready: Philip Chen <philipchen@chromium.org> Tested-by: Philip Chen <philipchen@chromium.org> Reviewed-by: Nicolas Boichat <drinkcat@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