Files
OpenCellular/include
Caveh Jalali c74c078592 tcpm: add .release driver operation.
similar to the USB_PD_TCPC case, add release/init operations when the
pd_task enters/leaves the PD_STATE_SUSPENDED state.  one use case for
PD_SUSPEND is to get exlusive access to the TCPC for things like
firmware update, so the release/init operation is needed to get the
TCPC and driver into a good state.

updated all tcpm_drv style drivers.  for backward compatibility, "old"
drivers that may not handle init/release properly simply return
EC_ERROR_UNIMPLEMENTED for tcpm_release().  pd_task() uses this as a
signal that it should not try to re-init() the driver.

TEST=tested in combination with follow-on CLs to do TCPC firmware
	update on electro.  also built for kevin, eve, sand which are
	some of the other boards using these drivers.
	"make buildall -j" passes.

BRANCH=none

BUG=b:35586896

Change-Id: I3d2964a79e710428f7a6e7004d68ab424af85be8
Signed-off-by: Caveh Jalali <caveh@google.com>
Reviewed-on: https://chromium-review.googlesource.com/544660
Reviewed-by: Shawn N <shawnn@chromium.org>
2017-06-28 23:23:41 -07:00
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