netdev - [PATCH net-next] net: dsa: sja1105: provide own phylink MAC operations

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Message-Id: <E1rvIcT-006bQW-S3@rmk-PC.armlinux.org.uk>
Date: Fri, 12 Apr 2024 16:15:13 +0100
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Andrew Lunn <andrew@...n.ch>,
	 Vladimir Oltean <olteanv@...il.com>
Cc: Florian Fainelli <f.fainelli@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	netdev@...r.kernel.org
Subject: [PATCH net-next] net: dsa: sja1105: provide own phylink MAC
 operations

Convert sja1105 to provide its own phylink MAC operations, thus
avoiding the shim layer in DSA's port.c

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 drivers/net/dsa/sja1105/sja1105_main.c | 38 ++++++++++++++++++--------
 1 file changed, 27 insertions(+), 11 deletions(-)

diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c
index fc262348a134..ee0fb1c343f1 100644
--- a/drivers/net/dsa/sja1105/sja1105_main.c
+++ b/drivers/net/dsa/sja1105/sja1105_main.c
@@ -1358,10 +1358,11 @@ static int sja1105_adjust_port_config(struct sja1105_private *priv, int port,
 }
 
 static struct phylink_pcs *
-sja1105_mac_select_pcs(struct dsa_switch *ds, int port, phy_interface_t iface)
+sja1105_mac_select_pcs(struct phylink_config *config, phy_interface_t iface)
 {
-	struct sja1105_private *priv = ds->priv;
-	struct dw_xpcs *xpcs = priv->xpcs[port];
+	struct dsa_port *dp = dsa_phylink_to_port(config);
+	struct sja1105_private *priv = dp->ds->priv;
+	struct dw_xpcs *xpcs = priv->xpcs[dp->index];
 
 	if (xpcs)
 		return &xpcs->pcs;
@@ -1369,21 +1370,31 @@ sja1105_mac_select_pcs(struct dsa_switch *ds, int port, phy_interface_t iface)
 	return NULL;
 }
 
-static void sja1105_mac_link_down(struct dsa_switch *ds, int port,
+static void sja1105_mac_config(struct phylink_config *config,
+			       unsigned int mode,
+			       const struct phylink_link_state *state)
+{
+}
+
+static void sja1105_mac_link_down(struct phylink_config *config,
 				  unsigned int mode,
 				  phy_interface_t interface)
 {
-	sja1105_inhibit_tx(ds->priv, BIT(port), true);
+	struct dsa_port *dp = dsa_phylink_to_port(config);
+
+	sja1105_inhibit_tx(dp->ds->priv, BIT(dp->index), true);
 }
 
-static void sja1105_mac_link_up(struct dsa_switch *ds, int port,
+static void sja1105_mac_link_up(struct phylink_config *config,
+				struct phy_device *phydev,
 				unsigned int mode,
 				phy_interface_t interface,
-				struct phy_device *phydev,
 				int speed, int duplex,
 				bool tx_pause, bool rx_pause)
 {
-	struct sja1105_private *priv = ds->priv;
+	struct dsa_port *dp = dsa_phylink_to_port(config);
+	struct sja1105_private *priv = dp->ds->priv;
+	int port = dp->index;
 
 	sja1105_adjust_port_config(priv, port, speed);
 
@@ -3198,6 +3209,13 @@ static void sja1105_teardown(struct dsa_switch *ds)
 	sja1105_static_config_free(&priv->static_config);
 }
 
+static const struct phylink_mac_ops sja1105_phylink_mac_ops = {
+	.mac_select_pcs	= sja1105_mac_select_pcs,
+	.mac_config	= sja1105_mac_config,
+	.mac_link_up	= sja1105_mac_link_up,
+	.mac_link_down	= sja1105_mac_link_down,
+};
+
 static const struct dsa_switch_ops sja1105_switch_ops = {
 	.get_tag_protocol	= sja1105_get_tag_protocol,
 	.connect_tag_protocol	= sja1105_connect_tag_protocol,
@@ -3207,9 +3225,6 @@ static const struct dsa_switch_ops sja1105_switch_ops = {
 	.port_change_mtu	= sja1105_change_mtu,
 	.port_max_mtu		= sja1105_get_max_mtu,
 	.phylink_get_caps	= sja1105_phylink_get_caps,
-	.phylink_mac_select_pcs	= sja1105_mac_select_pcs,
-	.phylink_mac_link_up	= sja1105_mac_link_up,
-	.phylink_mac_link_down	= sja1105_mac_link_down,
 	.get_strings		= sja1105_get_strings,
 	.get_ethtool_stats	= sja1105_get_ethtool_stats,
 	.get_sset_count		= sja1105_get_sset_count,
@@ -3375,6 +3390,7 @@ static int sja1105_probe(struct spi_device *spi)
 	ds->dev = dev;
 	ds->num_ports = priv->info->num_ports;
 	ds->ops = &sja1105_switch_ops;
+	ds->phylink_mac_ops = &sja1105_phylink_mac_ops;
 	ds->priv = priv;
 	priv->ds = ds;
 
-- 
2.30.2