gpcv2_idx_to_reg
reg = gpcv2_idx_to_reg(cd, d->hwirq / 32);
reg = gpcv2_idx_to_reg(cd, d->hwirq / 32);
reg = gpcv2_idx_to_reg(cd, i);
writel_relaxed(cd->saved_irq_mask[i], gpcv2_idx_to_reg(cd, i));