linux-kernel - [RFC Patch net-next 13/17] net: dsa: microchip: ksz9477: separate phylink mode from switch register

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Date:   Fri, 27 May 2022 12:33:54 +0530
From:   Arun Ramadoss <arun.ramadoss@...rochip.com>
To:     <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>
CC:     Woojung Huh <woojung.huh@...rochip.com>,
        <UNGLinuxDriver@...rochip.com>, Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        "Russell King" <linux@...linux.org.uk>
Subject: [RFC Patch net-next 13/17] net: dsa: microchip: ksz9477: separate phylink mode from switch register

As per 'commit 3506b2f42dff ("net: dsa: microchip: call
phy_remove_link_mode during probe")' phy_remove_link_mode is added in
the switch_register function after dsa_switch_register. In order to have
the common switch register function, moving this phy init after
dsa_register_switch using the new ksz_dev_ops.dsa_init hook.

Signed-off-by: Arun Ramadoss <arun.ramadoss@...rochip.com>
---
 drivers/net/dsa/microchip/ksz9477.c    | 49 ++++++++++++++------------
 drivers/net/dsa/microchip/ksz_common.c |  5 ++-
 drivers/net/dsa/microchip/ksz_common.h |  1 +
 3 files changed, 31 insertions(+), 24 deletions(-)

diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c
index ecce99b77ef6..c87ce0e2afd8 100644
--- a/drivers/net/dsa/microchip/ksz9477.c
+++ b/drivers/net/dsa/microchip/ksz9477.c
@@ -1349,6 +1349,30 @@ static void ksz9477_switch_exit(struct ksz_device *dev)
 	ksz9477_reset_switch(dev);
 }
 
+static int ksz9477_dsa_init(struct ksz_device *dev)
+{
+	struct phy_device *phydev;
+	int i;
+
+	for (i = 0; i < dev->phy_port_cnt; ++i) {
+		if (!dsa_is_user_port(dev->ds, i))
+			continue;
+
+		phydev = dsa_to_port(dev->ds, i)->slave->phydev;
+
+		/* The MAC actually cannot run in 1000 half-duplex mode. */
+		phy_remove_link_mode(phydev,
+				     ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
+
+		/* PHY does not support gigabit. */
+		if (!(dev->features & GBIT_SUPPORT))
+			phy_remove_link_mode(phydev,
+					     ETHTOOL_LINK_MODE_1000baseT_Full_BIT);
+	}
+
+	return 0;
+}
+
 static const struct ksz_dev_ops ksz9477_dev_ops = {
 	.setup = ksz9477_setup,
 	.get_port_addr = ksz9477_get_port_addr,
@@ -1377,35 +1401,14 @@ static const struct ksz_dev_ops ksz9477_dev_ops = {
 	.change_mtu = ksz9477_change_mtu,
 	.max_mtu = ksz9477_max_mtu,
 	.shutdown = ksz9477_reset_switch,
+	.dsa_init = ksz9477_dsa_init,
 	.init = ksz9477_switch_init,
 	.exit = ksz9477_switch_exit,
 };
 
 int ksz9477_switch_register(struct ksz_device *dev)
 {
-	int ret, i;
-	struct phy_device *phydev;
-
-	ret = ksz_switch_register(dev, &ksz9477_dev_ops);
-	if (ret)
-		return ret;
-
-	for (i = 0; i < dev->phy_port_cnt; ++i) {
-		if (!dsa_is_user_port(dev->ds, i))
-			continue;
-
-		phydev = dsa_to_port(dev->ds, i)->slave->phydev;
-
-		/* The MAC actually cannot run in 1000 half-duplex mode. */
-		phy_remove_link_mode(phydev,
-				     ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
-
-		/* PHY does not support gigabit. */
-		if (!(dev->features & GBIT_SUPPORT))
-			phy_remove_link_mode(phydev,
-					     ETHTOOL_LINK_MODE_1000baseT_Full_BIT);
-	}
-	return ret;
+	return ksz_switch_register(dev, &ksz9477_dev_ops);
 }
 EXPORT_SYMBOL(ksz9477_switch_register);
 
diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index ace5cf0ad5a8..f40d64858d35 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -1253,7 +1253,10 @@ int ksz_switch_register(struct ksz_device *dev,
 	/* Start the MIB timer. */
 	schedule_delayed_work(&dev->mib_read, 0);
 
-	return 0;
+	if (dev->dev_ops->dsa_init)
+		ret = dev->dev_ops->dsa_init(dev);
+
+	return ret;
 }
 EXPORT_SYMBOL(ksz_switch_register);
 
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
index 872d378ac45c..23962f47df46 100644
--- a/drivers/net/dsa/microchip/ksz_common.h
+++ b/drivers/net/dsa/microchip/ksz_common.h
@@ -213,6 +213,7 @@ struct ksz_dev_ops {
 	void (*freeze_mib)(struct ksz_device *dev, int port, bool freeze);
 	void (*port_init_cnt)(struct ksz_device *dev, int port);
 	int (*shutdown)(struct ksz_device *dev);
+	int (*dsa_init)(struct ksz_device *dev);
 	int (*init)(struct ksz_device *dev);
 	void (*exit)(struct ksz_device *dev);
 };
-- 
2.36.1