omap_prcm_event_to_irq
ret = request_irq(omap_prcm_event_to_irq("wkup"),
ret = request_irq(omap_prcm_event_to_irq("io"),
free_irq(omap_prcm_event_to_irq("io"), omap3_pm_init);
free_irq(omap_prcm_event_to_irq("wkup"), NULL);
extern int omap_prcm_event_to_irq(const char *event);
irq = omap_prcm_event_to_irq("io");