irqreturn_t ptp_qoriq_isr()

in ptp_qoriq.c [133:170]

• 30 lines of code
• 5 McCabe index (conditional complexity)

irqreturn_t ptp_qoriq_isr(int irq, void *priv)
{
	struct ptp_qoriq *ptp_qoriq = priv;
	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
	struct ptp_clock_event event;
	u32 ack = 0, mask, val, irqs;

	spin_lock(&ptp_qoriq->lock);

	val = ptp_qoriq->read(&regs->ctrl_regs->tmr_tevent);
	mask = ptp_qoriq->read(&regs->ctrl_regs->tmr_temask);

	spin_unlock(&ptp_qoriq->lock);

	irqs = val & mask;

	if (irqs & ETS1) {
		ack |= ETS1;
		extts_clean_up(ptp_qoriq, 0, true);
	}

	if (irqs & ETS2) {
		ack |= ETS2;
		extts_clean_up(ptp_qoriq, 1, true);
	}

	if (irqs & PP1) {
		ack |= PP1;
		event.type = PTP_CLOCK_PPS;
		ptp_clock_event(ptp_qoriq->clock, &event);
	}

	if (ack) {
		ptp_qoriq->write(&regs->ctrl_regs->tmr_tevent, ack);
		return IRQ_HANDLED;
	} else
		return IRQ_NONE;
}