Re: [PATCH v1 0/9] Add Nuvoton NCT6694 MFD devices
From: Marc Kleine-Budde
Date: Wed Oct 30 2024 - 06:13:28 EST
On 30.10.2024 16:30:37, Ming Yu wrote:
> I am trying to register interrupt controller for the MFD deivce.
> I need to queue work to call handle_nested_irq() in the callback
> of the interrupt pipe, right?
I think you can directly demux the IRQ from the interrupt endpoint
callback. But handle_nested_irq() only works from threaded IRQ context,
so you have to use something like generic_handle_domain_irq_safe().
Have a look for how to setup the IRQ domain:
| drivers/net/usb/lan78xx.c
| drivers/net/usb/smsc95xx.c
But the IRQ demux in the lan78xx only handles the PHY IRQ. The ksz
driver does proper IRQ demux:
| net/dsa/microchip/ksz_common.c
regards,
Marc
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