netdev - [RFC v1 net-next 4/7] net: mscc: ocelot: expose generic phylink_mac

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Date:   Wed, 15 Feb 2023 23:53:18 -0800
From:   Colin Foster <colin.foster@...advantage.com>
To:     linux-phy@...ts.infradead.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Russell King <linux@...linux.org.uk>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Vinod Koul <vkoul@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        "David S. Miller" <davem@...emloft.net>,
        Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>, UNGLinuxDriver@...rochip.com,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Vladimir Oltean <vladimir.oltean@....com>,
        Lee Jones <lee@...nel.org>
Subject: [RFC v1 net-next 4/7] net: mscc: ocelot: expose generic phylink_mac_config routine

The ocelot-switch driver can utilize the phylink_mac_config routine. Move
this to the ocelot library location and export the symbol to make this
possible.

Signed-off-by: Colin Foster <colin.foster@...advantage.com>
---
 drivers/net/ethernet/mscc/ocelot.c     | 26 ++++++++++++++++++++++++++
 drivers/net/ethernet/mscc/ocelot_net.c | 21 +++------------------
 include/soc/mscc/ocelot.h              |  3 +++
 3 files changed, 32 insertions(+), 18 deletions(-)

diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
index 9b8403e29445..8292e93a3782 100644
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -809,6 +809,32 @@ static int ocelot_port_flush(struct ocelot *ocelot, int port)
 	return err;
 }
 
+void ocelot_phylink_mac_config(struct ocelot *ocelot, int port,
+			       unsigned int link_an_mode,
+			       const struct phylink_link_state *state)
+{
+	struct ocelot_port *ocelot_port = ocelot->ports[port];
+
+	/* Disable HDX fast control */
+	ocelot_port_writel(ocelot_port, DEV_PORT_MISC_HDX_FAST_DIS,
+			   DEV_PORT_MISC);
+
+	/* SGMII only for now */
+	ocelot_port_writel(ocelot_port, PCS1G_MODE_CFG_SGMII_MODE_ENA,
+			   PCS1G_MODE_CFG);
+	ocelot_port_writel(ocelot_port, PCS1G_SD_CFG_SD_SEL, PCS1G_SD_CFG);
+
+	/* Enable PCS */
+	ocelot_port_writel(ocelot_port, PCS1G_CFG_PCS_ENA, PCS1G_CFG);
+
+	/* No aneg on SGMII */
+	ocelot_port_writel(ocelot_port, 0, PCS1G_ANEG_CFG);
+
+	/* No loopback */
+	ocelot_port_writel(ocelot_port, 0, PCS1G_LB_CFG);
+}
+EXPORT_SYMBOL_GPL(ocelot_phylink_mac_config);
+
 void ocelot_phylink_mac_link_down(struct ocelot *ocelot, int port,
 				  unsigned int link_an_mode,
 				  phy_interface_t interface,
diff --git a/drivers/net/ethernet/mscc/ocelot_net.c b/drivers/net/ethernet/mscc/ocelot_net.c
index ca4bde861397..590a2b2816ad 100644
--- a/drivers/net/ethernet/mscc/ocelot_net.c
+++ b/drivers/net/ethernet/mscc/ocelot_net.c
@@ -1675,25 +1675,10 @@ static void vsc7514_phylink_mac_config(struct phylink_config *config,
 {
 	struct net_device *ndev = to_net_dev(config->dev);
 	struct ocelot_port_private *priv = netdev_priv(ndev);
-	struct ocelot_port *ocelot_port = &priv->port;
-
-	/* Disable HDX fast control */
-	ocelot_port_writel(ocelot_port, DEV_PORT_MISC_HDX_FAST_DIS,
-			   DEV_PORT_MISC);
-
-	/* SGMII only for now */
-	ocelot_port_writel(ocelot_port, PCS1G_MODE_CFG_SGMII_MODE_ENA,
-			   PCS1G_MODE_CFG);
-	ocelot_port_writel(ocelot_port, PCS1G_SD_CFG_SD_SEL, PCS1G_SD_CFG);
-
-	/* Enable PCS */
-	ocelot_port_writel(ocelot_port, PCS1G_CFG_PCS_ENA, PCS1G_CFG);
-
-	/* No aneg on SGMII */
-	ocelot_port_writel(ocelot_port, 0, PCS1G_ANEG_CFG);
+	struct ocelot *ocelot = priv->port.ocelot;
+	int port = priv->port.index;
 
-	/* No loopback */
-	ocelot_port_writel(ocelot_port, 0, PCS1G_LB_CFG);
+	ocelot_phylink_mac_config(ocelot, port, link_an_mode, state);
 }
 
 static void vsc7514_phylink_mac_link_down(struct phylink_config *config,
diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h
index 751d9b250615..87ade87d3540 100644
--- a/include/soc/mscc/ocelot.h
+++ b/include/soc/mscc/ocelot.h
@@ -1111,6 +1111,9 @@ int ocelot_sb_occ_tc_port_bind_get(struct ocelot *ocelot, int port,
 				   enum devlink_sb_pool_type pool_type,
 				   u32 *p_cur, u32 *p_max);
 
+void ocelot_phylink_mac_config(struct ocelot *ocelot, int port,
+			       unsigned int link_an_mode,
+			       const struct phylink_link_state *state);
 void ocelot_phylink_mac_link_down(struct ocelot *ocelot, int port,
 				  unsigned int link_an_mode,
 				  phy_interface_t interface,
-- 
2.25.1