[RFC v8 net-next 15/16] net: dsa: felix: add phylink_get_caps capability

[Colin Foster <colin.foster@xxxxxxxxxxxxxxxx>]

Add the ability for felix users to announce their capabilities to DSA
switches by way of phylink_get_caps. This will allow those users the
ability to use phylink_generic_validate, which otherwise wouldn't be
possible.

Signed-off-by: Colin Foster <colin.foster@xxxxxxxxxxxxxxxx>
---
 drivers/net/dsa/ocelot/felix.c | 22 +++++++++++++++-------
 drivers/net/dsa/ocelot/felix.h |  2 ++
 2 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/drivers/net/dsa/ocelot/felix.c b/drivers/net/dsa/ocelot/felix.c
index d09408baaab7..32ed093f47c6 100644
--- a/drivers/net/dsa/ocelot/felix.c
+++ b/drivers/net/dsa/ocelot/felix.c
@@ -982,15 +982,23 @@ static void felix_phylink_get_caps(struct dsa_switch *ds, int port,
 				   struct phylink_config *config)
 {
 	struct ocelot *ocelot = ds->priv;
+	struct felix *felix;
 
-	/* This driver does not make use of the speed, duplex, pause or the
-	 * advertisement in its mac_config, so it is safe to mark this driver
-	 * as non-legacy.
-	 */
-	config->legacy_pre_march2020 = false;
+	felix = ocelot_to_felix(ocelot);
+
+	if (felix->info->phylink_get_caps) {
+		felix->info->phylink_get_caps(ocelot, port, config);
+	} else {
 
-	__set_bit(ocelot->ports[port]->phy_mode,
-		  config->supported_interfaces);
+		/* This driver does not make use of the speed, duplex, pause or
+		 * the advertisement in its mac_config, so it is safe to mark
+		 * this driver as non-legacy.
+		 */
+		config->legacy_pre_march2020 = false;
+
+		__set_bit(ocelot->ports[port]->phy_mode,
+			  config->supported_interfaces);
+	}
 }
 
 static void felix_phylink_validate(struct dsa_switch *ds, int port,
diff --git a/drivers/net/dsa/ocelot/felix.h b/drivers/net/dsa/ocelot/felix.h
index 3ecac79bbf09..33281370f415 100644
--- a/drivers/net/dsa/ocelot/felix.h
+++ b/drivers/net/dsa/ocelot/felix.h
@@ -57,6 +57,8 @@ struct felix_info {
 					u32 speed);
 	struct regmap *(*init_regmap)(struct ocelot *ocelot,
 				      struct resource *res);
+	void	(*phylink_get_caps)(struct ocelot *ocelot, int port,
+				    struct phylink_config *pl_config);
 };
 
 extern const struct dsa_switch_ops felix_switch_ops;
-- 
2.25.1