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94acd01e0c
In order to wake the chips from STOP/SLEEP mode with a touch, we need to put the two chips in correct state before going into STOP/SLEEP mode. Also, when one of the chips wakes up, it needs to wake the other chip with GPIO interrupt. This CL implements the necessary methods and also adds a sample routine that put the chips in STOP mode and wait for a touch using the implemented methods. BUG=None TEST=Build and boot. Touch the panel and see the response in console. BRANCH=None Change-Id: Ia5f7df8b550ee2459bcae1840f8a2717c8d947ce Signed-off-by: Vic Yang <victoryang@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/204482 Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit