netdev - [PATCH net-next 5/9] net: stmmac: use phylink_limit_mac

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Message-Id: <E1qYWSO-005fXx-6w@rmk-PC.armlinux.org.uk>
Date: Tue, 22 Aug 2023 19:50:24 +0100
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Alexandre Torgue <alexandre.torgue@...s.st.com>,
	 Jose Abreu <joabreu@...opsys.com>
Cc: Andrew Lunn <andrew@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Feiyang Chen <chenfeiyang@...ngson.cn>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Jakub Kicinski <kuba@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-stm32@...md-mailman.stormreply.com,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	netdev@...r.kernel.org,
	Paolo Abeni <pabeni@...hat.com>
Subject: [PATCH net-next 5/9] net: stmmac: use phylink_limit_mac_speed()

Use phylink_limit_mac_speed() to limit the MAC capabilities rather
than coding this for each speed.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 .../net/ethernet/stmicro/stmmac/stmmac_main.c | 35 ++++++++-----------
 drivers/net/phy/phylink.c                     |  2 +-
 2 files changed, 15 insertions(+), 22 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index fe733a9f5fe4..30a085f2b8fa 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1200,10 +1200,10 @@ static int stmmac_init_phy(struct net_device *dev)
 static int stmmac_phy_setup(struct stmmac_priv *priv)
 {
 	struct stmmac_mdio_bus_data *mdio_bus_data;
-	int max_speed = priv->plat->max_speed;
 	int mode = priv->plat->phy_interface;
 	struct fwnode_handle *fwnode;
 	struct phylink *phylink;
+	int max_speed;
 
 	priv->phylink_config.dev = &priv->dev->dev;
 	priv->phylink_config.type = PHYLINK_NETDEV;
@@ -1222,29 +1222,18 @@ static int stmmac_phy_setup(struct stmmac_priv *priv)
 				    priv->phylink_config.supported_interfaces);
 
 	priv->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
-		MAC_10 | MAC_100;
-
-	if (!max_speed || max_speed >= 1000)
-		priv->phylink_config.mac_capabilities |= MAC_1000;
+		MAC_10 | MAC_100 | MAC_1000;
 
 	if (priv->plat->has_gmac4) {
-		if (!max_speed || max_speed >= 2500)
-			priv->phylink_config.mac_capabilities |= MAC_2500FD;
+		priv->phylink_config.mac_capabilities |= MAC_2500FD;
 	} else if (priv->plat->has_xgmac) {
-		if (!max_speed || max_speed >= 2500)
-			priv->phylink_config.mac_capabilities |= MAC_2500FD;
-		if (!max_speed || max_speed >= 5000)
-			priv->phylink_config.mac_capabilities |= MAC_5000FD;
-		if (!max_speed || max_speed >= 10000)
-			priv->phylink_config.mac_capabilities |= MAC_10000FD;
-		if (!max_speed || max_speed >= 25000)
-			priv->phylink_config.mac_capabilities |= MAC_25000FD;
-		if (!max_speed || max_speed >= 40000)
-			priv->phylink_config.mac_capabilities |= MAC_40000FD;
-		if (!max_speed || max_speed >= 50000)
-			priv->phylink_config.mac_capabilities |= MAC_50000FD;
-		if (!max_speed || max_speed >= 100000)
-			priv->phylink_config.mac_capabilities |= MAC_100000FD;
+		priv->phylink_config.mac_capabilities |= MAC_2500FD;
+		priv->phylink_config.mac_capabilities |= MAC_5000FD;
+		priv->phylink_config.mac_capabilities |= MAC_10000FD;
+		priv->phylink_config.mac_capabilities |= MAC_25000FD;
+		priv->phylink_config.mac_capabilities |= MAC_40000FD;
+		priv->phylink_config.mac_capabilities |= MAC_50000FD;
+		priv->phylink_config.mac_capabilities |= MAC_100000FD;
 	}
 
 	/* Half-Duplex can only work with single queue */
@@ -1253,6 +1242,10 @@ static int stmmac_phy_setup(struct stmmac_priv *priv)
 			~(MAC_10HD | MAC_100HD | MAC_1000HD);
 	priv->phylink_config.mac_managed_pm = true;
 
+	max_speed = priv->plat->max_speed;
+	if (max_speed)
+		phylink_limit_mac_speed(&priv->phylink_config, max_speed);
+
 	fwnode = priv->plat->port_node;
 	if (!fwnode)
 		fwnode = dev_fwnode(priv->device);
diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index b51cf92392d2..0d7354955d62 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -440,7 +440,7 @@ void phylink_limit_mac_speed(struct phylink_config *config, u32 max_speed)
 
 	for (i = 0; i < ARRAY_SIZE(phylink_caps_params) &&
 		    phylink_caps_params[i].speed > max_speed; i++)
-		config->mac_speed &= ~phylink_caps_params.mask;
+		config->mac_capabilities &= ~phylink_caps_params[i].mask;
 }
 EXPORT_SYMBOL_GPL(phylink_limit_mac_speed);
 
-- 
2.30.2