> I suspect that USB should do some non-global PM stuff too.
> Hub ports can be suspended when the devices connected to them
> are idle for long enough ... that's not something I'd expect
> system-wide PM policies to address.
Indeed, this is not addressed, though it may sense to have
a way in the device model to call the suspend/resume callbacks
of "childs" of a given hub only for that purpose, I don't think
this is implemented yet. Maybe talk to Patrick about it.
In general "local" power management (automatic disk spin down,
chipset idle-pm, etc...) is ... local to the driver, though you
can probably use the power state field of struct device to
store your current state if it maps to those semantics.
Ben.
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This archive was generated by hypermail 2b29 : Thu Jul 31 2003 - 22:00:51 EST