> -----Original Message-----
> From: Russell King - ARM Linux admin <linux@xxxxxxxxxxxxxxx>
> Sent: Tuesday, February 4, 2020 12:11 AM
> To: Calvin Johnson <calvin.johnson@xxxxxxx>
<snip>
> > Introduce phylink_fwnode_phy_connect API to connect the PHY using
> > fwnode.
> >
> > Signed-off-by: Calvin Johnson <calvin.johnson@xxxxxxxxxxx>
> > ---
> >
> > drivers/net/phy/phylink.c | 64
> +++++++++++++++++++++++++++++++++++++++
> > include/linux/phylink.h | 2 ++
> > 2 files changed, 66 insertions(+)
> >
> > diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
> > index ee7a718662c6..f211f62283b5 100644
> > --- a/drivers/net/phy/phylink.c
> > +++ b/drivers/net/phy/phylink.c
> > @@ -18,6 +18,7 @@
> > #include <linux/spinlock.h>
> > #include <linux/timer.h>
> > #include <linux/workqueue.h>
> > +#include <linux/acpi.h>
> >
> > #include "sfp.h"
> > #include "swphy.h"
> > @@ -817,6 +818,69 @@ int phylink_connect_phy(struct phylink *pl,
> > struct phy_device *phy) } EXPORT_SYMBOL_GPL(phylink_connect_phy);
> >
> > +/**
> > + * phylink_fwnode_phy_connect() - connect the PHY specified in the
> fwnode.
> > + * @pl: a pointer to a &struct phylink returned from phylink_create()
> > + * @dn: a pointer to a &struct device_node.
> > + * @flags: PHY-specific flags to communicate to the PHY device driver
> > + *
> > + * Connect the phy specified in the device node @dn to the phylink
> > +instance
> > + * specified by @pl. Actions specified in phylink_connect_phy() will
> > +be
> > + * performed.
> > + *
> > + * Returns 0 on success or a negative errno.
> > + */
> > +int phylink_fwnode_phy_connect(struct phylink *pl,
> > + struct fwnode_handle *fwnode,
> > + u32 flags) {
> > + struct fwnode_handle *phy_node;
> > + struct phy_device *phy_dev;
> > + int ret;
> > + int status;
> > + struct fwnode_reference_args args;
> > +
> > + /* Fixed links and 802.3z are handled without needing a PHY */
> > + if (pl->link_an_mode == MLO_AN_FIXED ||
> > + (pl->link_an_mode == MLO_AN_INBAND &&
> > + phy_interface_mode_is_8023z(pl->link_interface)))
> > + return 0;
> > +
> > + status = acpi_node_get_property_reference(fwnode, "phy-handle", 0,
> > + &args);
> > + if (ACPI_FAILURE(status) || !is_acpi_device_node(args.fwnode))
> > + status = acpi_node_get_property_reference(fwnode, "phy", 0,
> > + &args);
> > + if (ACPI_FAILURE(status) || !is_acpi_device_node(args.fwnode))
> > + status = acpi_node_get_property_reference(fwnode,
> > + "phy-device", 0,
> > + &args);
>
> This is a copy-and-paste of phylink_of_phy_connect() without much thought.
>
> There is no need to duplicate the legacy DT functionality of phy/phy-
> device/phy-handle in ACPI - there is no legacy to support, so it's pointless
> trying to find one of three properties here.
Ok. I'll remove it.
> I'd prefer both the DT and ACPI variants to be more integrated, so we don't
> have two almost identical functions except for the firmware specific detail.
Did you mean phylink_of_phy_connect replaced with phylink_fwnode_phy_connect?
I can add DT handling also inside phylink_fwnode_phy_connect. Please let me know.
Thanks for pointing out about adding linux-acpi ML. I started added them in my responses.
I was assuming they would be added by get_maintainer.pl.
Thanks
Calvin
