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If volume up + volume down + power buttons are held down for 30 seconds, then indicate to AP that HW_REINIT is requested by the user. Since recovery mode is triggered by holding down the three buttons for 10 seconds, button_check_hw_reinit_required checks for 20 more seconds only. BUG=b:37682514 BRANCH=None TEST=Verified that: 1. If volume up, volume down and power are held for 30 seconds, AP sees the hw reinit request. 2. If either of the buttons is released before 30 seconds, AP does not see the hw reinit request. Change-Id: I3a53966dcdcb84d73f160578411b6c0f62225b95 Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/487002 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Randall Spangler <rspangler@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