irq_control
.irq_control = irq_control_v1_v2,
.irq_control = irq_control_v1_v2,
.irq_control = irq_control_v1_v2,
.irq_control = irq_control_v3,
.irq_control = irq_control_v3,
void (*irq_control)(struct mxc_nand_host *, int);
host->devtype_data->irq_control(host, 0);
host->devtype_data->irq_control(host, 1);
host->devtype_data->irq_control(host, activate);
irq_control(host, 0);
irq_control(host, 1);
temp = readl(&pdev->ir_set->irq_control);
writel(temp, &pdev->ir_set->irq_control);
__le32 irq_control;