BUTTRESS_REG_DRV_IS_UCX_CONTROL_STATUS
.status_ctrl_reg = BUTTRESS_REG_DRV_IS_UCX_CONTROL_STATUS,
val = readl(isp->base + BUTTRESS_REG_DRV_IS_UCX_CONTROL_STATUS);
writel(val, isp->base + BUTTRESS_REG_DRV_IS_UCX_CONTROL_STATUS);