Issue:
Diplay freeze observed sometimes, if there is any
suspend/resume of the device.
The issue found to be with differences in the timesources
used by display and camera for timestamp calculation.
Fix:
Measure the clock offset between BOOTTIME and MONOTONIC.
The clock domain source for ISP is BOOTTIME and
for display, it is MONOTONIC.
The offset is used to convert from clock domain of
camera to display.
Added following set prop to switch between camera time sources.
persist.camera.time.monotonic <value>
Default value is 1.
value 0 indicates Boot time from camera.
value 1 indicates Monotonic time from camera.
Change-Id: I733aa17e89ccaa7f5ea6d2eae5e1cd6428c81a85
CRs-Fixed: 1005906
dc89a99bdd