On Wed, Jul 1, 2020 at 9:34 AM Sakari Ailus <sakari.ailus@xxxxxx> wrote:
>
> Hi Laurent,
>
> On Wed, Jul 01, 2020 at 09:21:37AM +0300, Laurent Pinchart wrote:
> > Drivers may need to test if a fwnode is a graph endpoint. To avoid
> > hand-written solutions that wouldn't work for all fwnode types, add a
> > new fwnode_graph_is_endpoint() function for this purpose. We don't need
> > to wire it up to different backends for OF and ACPI for now, as the
> > implementation can simply be based on checkout the presence of a
> > remote-endpoint property.
> >
> > Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
> > ---
> > include/linux/property.h | 5 +++++
> > 1 file changed, 5 insertions(+)
> >
> > diff --git a/include/linux/property.h b/include/linux/property.h
> > index 10d03572f52e..9f805c442819 100644
> > --- a/include/linux/property.h
> > +++ b/include/linux/property.h
> > @@ -389,6 +389,11 @@ struct fwnode_handle *
> > fwnode_graph_get_remote_node(const struct fwnode_handle *fwnode, u32 port,
> > u32 endpoint);
> >
> > +static inline bool fwnode_graph_is_endpoint(struct fwnode_handle *fwnode)
> > +{
> > + return fwnode_property_present(fwnode, "remote-endpoint");
> > +}
> > +
> > /*
> > * Fwnode lookup flags
> > *
>
> Thanks for the patch. I've bounced it to devicetree and linux-acpi lists
> (now cc'd) --- hope that works.
>
> Rafael: do you think this simple patch could go though the media tree,
> assuming that folks are generally fine with the patch as such?
Yes, it could.
