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

--
Pengutronix e.K. | Marc Kleine-Budde |
Embedded Linux | https://www.pengutronix.de |
Vertretung Nürnberg | Phone: +49-5121-206917-129 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-9 |

Attachment: signature.asc
Description: PGP signature