Provide api to save/restore GICD state for SPIs. SPI
configuration is restored for GICD_ICFGR, GICD_ISENABLER,
GICD_IPRIORITYR, GICD_IROUTER registers. Following is the
sequence for restore:
1. For SPIs, check whether any of GICD_ICFGR, GICD_ISENABLER,
GICD_IPRIORITYR, GICD_IROUTER, current configuration is
different from saved configuration.
For all irqs, with mismatched configurations,
2. Set GICD_ICENABLER and wait for its completion.
3. Restore any changed GICD_ICFGR, GICD_IPRIORITYR, GICD_IROUTER
configurations.
4. Set GICD_ICACTIVER.
5. Set pending for the interrupt.
6. Enable interrupt and wait for its completion.
Change-Id: I31cd5eb8c3226dcdfd474bc88b91c1cb5ca909e6
Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org>
Signed-off-by: Channagoud Kadabi <ckadabi@codeaurora.org>
b179a8e1e9