MCPDM_REG_IRQSTATUS
irq_status = omap_mcpdm_read(mcpdm, MCPDM_REG_IRQSTATUS);
omap_mcpdm_write(mcpdm, MCPDM_REG_IRQSTATUS, irq_status);
omap_mcpdm_read(mcpdm, MCPDM_REG_IRQSTATUS));