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592882e5f4
Certain Low power SOC states (e.g. deep sleep) will result in device IP blocks losing state. In such a scenario it can be useful to have a mechanism for devices (driver code) to signal the power manager / policy that they are in the middle of a transaction. We expect the device driver code to make a call to device_busy_set(device *) before initiating a transaction and device_busy_clear(device *) on completion. It is expected that device driver developers will add this as necessary in their drivers. Further an API is provided for power manager application / policy to check this. Based on this the power manager / policy can decide whether or not to go into a particular power state. Change-Id: I0fedd90b98e182cd41b53c7f9e08655532822faa Signed-off-by: Jithu Joseph <jithu.joseph@intel.com> |
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