sc7180: Support the sleep failure detection to SC7180 power sequence

This only adds the sleep failure detection support to SC7180 power
sequence but not enable it yet. The board has to explicitly define
the following CONFIG to enable this feature:
 * CONFIG_CHIPSET_RESUME_INIT_HOOK
 * CONFIG_POWER_SLEEP_FAILURE_DETECTION

Without defining the CONFIGs, the only change is to disable/enable
the AP_SUSPEND signal interrupt; the suspend/resume hooks are
unchanged, i.e. not wait for the host sleep event.

With defining the CONFIGs, the suspend failure detection is enabled.

When AP_SUSPEND is deasserted, only the RESUME_INIT hook is triggered
to initialize the SPI interface, such that EC can receive the host
sleep event. The RESUME hook is delayed to be triggered until AP
sends the resume event.

If AP_SUSPEND becomes asserted before receiving the host event, will
back to S3 and the SUSPEND_COMPLETE hook is triggered to disable the
SPI interface.

If no host event is received and no AP_SUSPEND assertion, a timeout
happens and wake the AP with a HANG_DETECT event.

BRANCH=None
BUG=b:148149387
TEST=Tried the following scenaiors (the CONFIGs not defined):
(1) On AP_SUSPEND assertion, SUSPEND hook triggered, go to S3;
(2) On AP_SUSPEND deassertion, RESUME hook triggered, go to S0.
Checked the follower CL for the configs defined.

Change-Id: I28301921a4c85aab092cdc8af9d6ff4b1da7ec61
Signed-off-by: Wai-Hong Tam <waihong@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2321876
Reviewed-by: Ting Shen <phoenixshen@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>

0 files changed, 0 insertions, 0 deletions