[PATCH 4/9] gpio: regmap: add the .get_direction() callback

[Linus Walleij]

On Wed, Jul 9, 2025 at 5:09 PM Andrew Lunn <andrew at lunn.ch> wrote:

> This is not my area, so i will deffer to the GPIO
> Maintainers. However, it is not clear to me what get_direction()
> should return.

This callback should return the current direction as set up
in the hardware.

A major usecase is that this is called when the gpiochip is
registered to read out all the current directions of the GPIO
lines, so the kernel has a clear idea of the state of the
hardware.

Calling this should ideally result in a read of the status from
a hardware register.

Yours,
Linus Walleij