USB_QMU_RQCSR
regs[4].offset = in ? USB_QMU_TQCSR(epnum) : USB_QMU_RQCSR(epnum);
offset = mep->is_in ? USB_QMU_TQCSR(epnum) : USB_QMU_RQCSR(epnum);
if (mtu3_readl(mbase, USB_QMU_RQCSR(epnum)) & QMU_Q_ACTIVE) {
mtu3_writel(mbase, USB_QMU_RQCSR(epnum), QMU_Q_START);
qcsr = mep->is_in ? USB_QMU_TQCSR(epnum) : USB_QMU_RQCSR(epnum);