Re: [PATCH v3] regmap: regmap-irq/gpio-max77620: add level-irq support

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Fri, Dec 28, 2018 at 10:05:33AM +0200, Matti Vaittinen wrote:

> Last night - just when I was about to get some sleep - it stroke me. I
> think the correct thing to do would be leaving the irq_set_type to NULL
> for those IRQ chips which do not support type setting. If we do that,
> then the irq core will take care of situations where user requests type
> setting but the chip does not support it. Which means the regmap-irq
> would be no different from any other irq chip where type setting is not
> supported.

Yes, this is the best fix - let the framework handle things properly.
We'll need a second set of operations and to select which to use based
on having type information but that's fine.

> So at the cost of removing "const" from regmap_irq_chip we could do:

...

> Mark, Geert, what do you think? (And maybe same for the .irq_set_wake -
> but I did omit this as I have never looked at the wake functionality
> before).

We need a separate struct as otherwise if there's multiple devices with
regmap irq_chip implementations then they'll collide with each other but
otherwise I like this approach (or we could copy the irq_chip struct
when registering and then modify which is going to scale a bit better -
you're probably right that we need to do the same thing for the wake
configuration.  I'll still look at applying your patch as a temporary
fix though.

Attachment: signature.asc
Description: PGP signature


[Index of Archives]     [Linux SPI]     [Linux Kernel]     [Linux ARM (vger)]     [Linux ARM MSM]     [Linux Omap]     [Linux Arm]     [Linux Tegra]     [Fedora ARM]     [Linux for Samsung SOC]     [eCos]     [Linux Fastboot]     [Gcc Help]     [Git]     [DCCP]     [IETF Announce]     [Security]     [Linux MIPS]     [Yosemite Campsites]

  Powered by Linux