Re: [PATCH 1/4] of/device: Add a way to probe drivers by match data

[Rob Herring <robh+dt@kernel.org>]

On Thu, Nov 29, 2018 at 6:28 PM Stephen Boyd <sboyd@kernel.org> wrote:
>
> Quoting Stephen Boyd (2018-11-07 10:37:31)
> > appropriate structure with to_platform_device() or to_i2c_client()?
> >
> > So the example would become
> >
> >   struct of_driver_probe_func {
> >         int (*probe)(struct device *dev);
> >   };
> >
> >   struct of_driver_probe_func mtk_probes[] = {
> >         mtk_probe1,
> >         mtk_probe2,
> >         mtk_probe3,
> >   };
> >
> >   struct platform_driver mtk_driver = {
> >         .driver = {
> >                 .name = "mtk-foo";
> >                 .of_match_table = mtk_match_table,
> >                 .of_probes = &mtk_probes;
> >         },
> >   };
> >
> > And the probe functions might need to container_of() the device pointer
> > to get the struct they know they need. The probe function could also be
> > added to of_device_id and then we would have to look and see if that
> > pointer is populated when the device is matched in generic device code.
> >
>
> I guess I'll go down the path of extending the of_device_id structure?

Unfortunately, I don't think you can change of_device_id as it's part
of the kernel ABI.

Rob