SUNXI_MUSB_INTRUSB
musb->int_usb = readb(musb->mregs + SUNXI_MUSB_INTRUSB);
writeb(musb->int_usb, musb->mregs + SUNXI_MUSB_INTRUSB);
return readb(addr + SUNXI_MUSB_INTRUSB);
return writeb(data, addr + SUNXI_MUSB_INTRUSB);