tree 1227fe3c35c8be63188a9b49ce61503bd4a10f91
parent d9ec33a010dfbd7685ded4a4711f13609208fc32
author Mike Capps <mikepcapps@gmail.com> 1621529230 -0400
committer Mike Capps <mikepcapps@gmail.com> 1631217881 +0000

monitor: Subscribe to tach target and feedback services

Subscribes to nameOwnerChanged signals for the services of the sensor
and target interfaces for each configured fan. If those services go
offline, the fan tach sensors should get marked nonfunctional due to no
longer receiving updated target or feedback values. In this design, we
use the existing method of determining when a fan tach sensor should be
marked nonfunctional to allow a recovery window, wherein a brief
offline/online transition (such as during a restart) will not trigger a
nonfunctional state change.

Change-Id: I0a935ccad5a864dc952d023185356a1ef1226830
Signed-off-by: Mike Capps <mikepcapps@gmail.com>