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If the proximity sensor indicates there is an object very close (<= 5cm), ignore light sensor readings. Otherwise, when someone put their finger on the sensor, the light sensor would most likely report dark condition and the screen brightness will be lowered unexpectedly. BUG=b:25573958 BRANCH=smaug TEST=check light report does not change when proximity sensor reports < 5cm, using androsensor apps. Change-Id: I16db40766a71a7925e28372ebb54ae43f60a4989 Signed-off-by: Gwendal Grignou <gwendal@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/312982
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit