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Add a host event to support MKPB: When sent, the ACPI code will send a notification to the kernel cros-ec-lpcs driver that will issue EC_CMD_GET_NEXT_EVENT. We can allow code (sensor stack for instance) that uses MKBP to work on ACPI based architecture. Obviously, host event over MKPB is not supported. BRANCH=none BUG=b:27849483 TEST=Check we get sensor events on Cyan through the sensor ring. (cyan branch) Change-Id: Iadc9c852b410cf69ef15bcbbb1b086c36687c687 Signed-off-by: Gwendal Grignou <gwendal@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/353634 Reviewed-by: Randall Spangler <rspangler@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