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Modify PDCMD task to allow for TCPCs that do not support host commands. CONFIG_HOSTCMD_PD is a new config option to be used by TCPCs that implement our host command protocol such as the PD MCU on glados and oak. Otherwise, the PDCMD task will not send host commands and will be used simply to check TCPC interrupt status. BUG=none BRANCH=none TEST=test on glados and samus and make sure we can send host commands from the EC to the PD and that we can negotiate a PD contract. Change-Id: I618badb5db3f9e490ae4eedfdb2a0c54513496ff Signed-off-by: Alec Berg <alecaberg@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/278215 Reviewed-by: Scott Collyer <scollyer@chromium.org> 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