Commits
Fugang Duan committed 764ebc90db1
MLK-17290-05 gpio: mxc: save and restore gpio controller registers when power off
Save gpio controller registers before power off, and then restore these
registers after power on. There have two cases need to save/restore regs:
a. If sub_irqs/sub_gpios are not free/released, device suspend() force
runtime suspend and power domain off in suspended stage, it needs to
keep the previous registers value after device resume back.
b. If some sub_irqs set irq type just one time, then irqchip should restore
the registers for correct irq type.
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Tested-by: Guoniu.Zhou <guoniu.zhou@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>