tree 529d73a9dfb7e26caf81340f73a8a8c90a97bc72
parent 8e0dc2068b902308ff2059c455c8efe1912ccd0f
author Eliad Peller <eliad@wizery.com> 1385029697 +0200
committer Emmanuel Grumbach <emmanuel.grumbach@intel.com> 1391459018 +0200

iwlwifi: add D0i3 references boiler plate

D0i3 is bus power saving feature. It involves the
firmware - the driver needs to send a list of commands
to the firmware before entering this state. Wake up from
d0i3 also requires a few commands to the firmware.

The trigger to enter D0i3 is an idle timeout that will be
implemented later and will most probably rely on RUNTIME_PM
infrastructure.

In order to prevent entrance to D0i3 in critical flows, we
implement here a reference infrastructure. When a ref is
taken, we can't enter D0i3.

PCIe does't support D0i3.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>