static int qpnpint_irq_domain_translate()

in spmi-pmic-arb.c [795:836]

• 34 lines of code
• 9 McCabe index (conditional complexity)

static int qpnpint_irq_domain_translate(struct irq_domain *d,
					struct irq_fwspec *fwspec,
					unsigned long *out_hwirq,
					unsigned int *out_type)
{
	struct spmi_pmic_arb *pmic_arb = d->host_data;
	u32 *intspec = fwspec->param;
	u16 apid, ppid;
	int rc;

	dev_dbg(&pmic_arb->spmic->dev, "intspec[0] 0x%1x intspec[1] 0x%02x intspec[2] 0x%02x\n",
		intspec[0], intspec[1], intspec[2]);

	if (irq_domain_get_of_node(d) != pmic_arb->spmic->dev.of_node)
		return -EINVAL;
	if (fwspec->param_count != 4)
		return -EINVAL;
	if (intspec[0] > 0xF || intspec[1] > 0xFF || intspec[2] > 0x7)
		return -EINVAL;

	ppid = intspec[0] << 8 | intspec[1];
	rc = pmic_arb->ver_ops->ppid_to_apid(pmic_arb, ppid);
	if (rc < 0) {
		dev_err(&pmic_arb->spmic->dev, "failed to xlate sid = %#x, periph = %#x, irq = %u rc = %d\n",
		intspec[0], intspec[1], intspec[2], rc);
		return rc;
	}

	apid = rc;
	/* Keep track of {max,min}_apid for bounding search during interrupt */
	if (apid > pmic_arb->max_apid)
		pmic_arb->max_apid = apid;
	if (apid < pmic_arb->min_apid)
		pmic_arb->min_apid = apid;

	*out_hwirq = spec_to_hwirq(intspec[0], intspec[1], intspec[2], apid);
	*out_type  = intspec[3] & IRQ_TYPE_SENSE_MASK;

	dev_dbg(&pmic_arb->spmic->dev, "out_hwirq = %lu\n", *out_hwirq);

	return 0;
}