On 11/27/2013 01:14 PM, Hans Verkuil wrote: [...] >>> For our systems the adv7604 interrupts is not always hooked up to a gpio >>> irq, instead a register has to be read to figure out which device actually >>> produced the irq. >> >> Where is that register located ? Shouldn't it be modeled as an interrupt >> controller ? > > It's a PCIe interrupt whose handler needs to read several FPGA registers > in order to figure out which interrupt was actually triggered. I don't > know enough about interrupt controller to understand whether it can be > modeled as a 'standard' interrupt.
This sounds as if it should be implemented as a irq_chip driver. There are a couple of examples in drivers/irqchip/ - Lars -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
