static int vlynq_irq_type()

in vlynq.c [151:180]

• 29 lines of code
• 6 McCabe index (conditional complexity)

static int vlynq_irq_type(struct irq_data *d, unsigned int flow_type)
{
	struct vlynq_device *dev = irq_data_get_irq_chip_data(d);
	int virq;
	u32 val;

	BUG_ON(!dev);
	virq = d->irq - dev->irq_start;
	val = readl(&dev->remote->int_device[virq >> 2]);
	switch (flow_type & IRQ_TYPE_SENSE_MASK) {
	case IRQ_TYPE_EDGE_RISING:
	case IRQ_TYPE_EDGE_FALLING:
	case IRQ_TYPE_EDGE_BOTH:
		val |= VINT_TYPE_EDGE << VINT_OFFSET(virq);
		val &= ~(VINT_LEVEL_LOW << VINT_OFFSET(virq));
		break;
	case IRQ_TYPE_LEVEL_HIGH:
		val &= ~(VINT_TYPE_EDGE << VINT_OFFSET(virq));
		val &= ~(VINT_LEVEL_LOW << VINT_OFFSET(virq));
		break;
	case IRQ_TYPE_LEVEL_LOW:
		val &= ~(VINT_TYPE_EDGE << VINT_OFFSET(virq));
		val |= VINT_LEVEL_LOW << VINT_OFFSET(virq);
		break;
	default:
		return -EINVAL;
	}
	writel(val, &dev->remote->int_device[virq >> 2]);
	return 0;
}