> 0) If my adapter is idle then , does the system ( apm bios/ apm driver)
> takes care of it to bring it into standby/suspend state or my driver has to
> do something ?
APM may or may not do things to your device on a suspend. For things like
ACPI and PCI bus power management 2.2.x doesnt deal with this. 2.3.x now
has code in it to handle basic stuff
> 1) How my driver is going to comunicate with BIOS , i mean what are the
> entry points so that APM feature can be implemented.
What specifically are you after. The kernel allows you to register power
management callbacks so you will be told when a suspend occurs and when a
resume occurs
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