Re: [PATCH 2/8] gpio: zynq: Wakeup gpio controller when it is used as IRQ controller

[Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxx>]

Hello Linus,

On Fri, 11 Jan 2019 10:54:20 +0100, Linus Walleij wrote:

> My stance is that the driver is responsible of enabling and managing
> runtime PM for its hardware block(s).
> 
> Runtime PM in the core should only be added if the core needs to
> be aware about it, such as is the case when e.g. a block device
> needs to drain its write buffer before going to runtime sleep.
> 
> I fail so see why the GPIO core need to be aware about this.

In this very same thread at
https://www.spinics.net/lists/arm-kernel/msg600515.html, you kind of
proposed to handle this in the core in fact :-) Though indeed you said
that the core could provide helpers.

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com