Re: [PATCH 13/23] gpio: mockup: pass the chip label as device property

[Bartosz Golaszewski <brgl@xxxxxxxx>]

On Fri, Sep 4, 2020 at 6:48 PM Andy Shevchenko
<andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
>
> On Fri, Sep 04, 2020 at 05:45:37PM +0200, Bartosz Golaszewski wrote:
> > From: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>
> >
> > While we do check the "chip-name" property in probe(), we never actually
> > use it. Let's pass the chip label to the driver using device properties
> > as we'll want to allow users to define their own once dynamically
> > created chips are supported.
> >
> > The property is renamed to "chip-label" to not cause any confusion with
> > the actual chip name which is of the form: "gpiochipX".
> >
> > If the "chip-label" property is missing, let's do what most devices in
> > drivers/gpio/ do and use dev_name().
>
> Just wondering if we have a documentation in kernel how this mockup mechanism
> works and what kind of properties it uses.
>
> Side note: moving to software nodes would make some advantages in future such
> as visibility properties and their values (not yet implemented, but there is an
> idea to move forward).

Seems like we're implicitly using software nodes already:
fwnode_create_software_node() is called when adding device properties.

Bart