Re: [PATCH 4/8] mac_via: add GPIO for A/UX mode

[Mark Cave-Ayland]

On 15/10/2021 08:17, Laurent Vivier wrote:

> Le 13/10/2021 à 23:21, Mark Cave-Ayland a écrit :
> > Add a new auxmode GPIO that is updated when port B bit 6 is changed indicating
> > whether the hardware is configured for A/UX mode.
>
> Stupid question: why do you use GPIO to pass the auxmode information between 
> VIA and GLUE?
>
> Can't we use object_property_set_link() to set a pointer to the GLUE object?

For devices that are independent i.e. not contained within others I prefer to 
restrict the interface to properties that are visible within "info qom-tree" which 
are MRs and GPIOs. Otherwise GLUE requires knowledge of VIA internals which breaks 
the device abstraction.


ATB,

Mark.