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4ce529e25a
In case there is a sudden power loss to PCH, then there are no eSPI VW messages sent from the PCH to EC indicating power state transition into S5. Instead, the eSPI compatibility spec defines such events as global reset events. For global reset events, eSPI_Reset# signal is asserted without SLP_SUS# being asserted. This acts as an indication to the EC that there was a global reset event. Add a callback chipset_handle_espi_reset_assert that takes any necessary action whenever eSPI_Reset# pin is asserted. On skylake, it would check if power button was being pressed and release the button. BUG=chrome-os-partner:62014 BRANCH=None TEST=Verified that apshutdown works as expected. Change-Id: I409afa0d00faca55ae3aa577743cedac58d4d877 Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/438935 Reviewed-by: Aaron Durbin <adurbin@chromium.org>