netdev - [PATCH net-next v9 4/6] net: stmmac: configure SerDes on mac

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Message-Id: <20250227121522.1802832-5-yong.liang.choong@linux.intel.com>
Date: Thu, 27 Feb 2025 20:15:20 +0800
From: Choong Yong Liang <yong.liang.choong@...ux.intel.com>
To: Simon Horman <horms@...nel.org>,
	Jose Abreu <joabreu@...opsys.com>,
	Jose Abreu <Jose.Abreu@...opsys.com>,
	David E Box <david.e.box@...ux.intel.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H . Peter Anvin" <hpa@...or.com>,
	Rajneesh Bhardwaj <irenic.rajneesh@...il.com>,
	David E Box <david.e.box@...el.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Jiawen Wu <jiawenwu@...stnetic.com>,
	Mengyuan Lou <mengyuanlou@...-swift.com>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	Hans de Goede <hdegoede@...hat.com>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	Richard Cochran <richardcochran@...il.com>,
	Serge Semin <fancer.lancer@...il.com>
Cc: x86@...nel.org,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
	platform-driver-x86@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH net-next v9 4/6] net: stmmac: configure SerDes on mac_finish

SerDes will configure according to the provided interface mode after
finish a major reconfiguration of the interface mode.

Reviewed-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
Signed-off-by: Choong Yong Liang <yong.liang.choong@...ux.intel.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 13 +++++++++++++
 include/linux/stmmac.h                            |  4 ++++
 2 files changed, 17 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 424fa2fe31c6..72ec2ef3907f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1086,6 +1086,18 @@ static int stmmac_mac_enable_tx_lpi(struct phylink_config *config, u32 timer,
 	return 0;
 }
 
+static int stmmac_mac_finish(struct phylink_config *config, unsigned int mode,
+			     phy_interface_t interface)
+{
+	struct net_device *ndev = to_net_dev(config->dev);
+	struct stmmac_priv *priv = netdev_priv(ndev);
+
+	if (priv->plat->mac_finish)
+		priv->plat->mac_finish(ndev, priv->plat->bsp_priv, mode, interface);
+
+	return 0;
+}
+
 static const struct phylink_mac_ops stmmac_phylink_mac_ops = {
 	.mac_get_caps = stmmac_mac_get_caps,
 	.mac_select_pcs = stmmac_mac_select_pcs,
@@ -1094,6 +1106,7 @@ static const struct phylink_mac_ops stmmac_phylink_mac_ops = {
 	.mac_link_up = stmmac_mac_link_up,
 	.mac_disable_tx_lpi = stmmac_mac_disable_tx_lpi,
 	.mac_enable_tx_lpi = stmmac_mac_enable_tx_lpi,
+	.mac_finish = stmmac_mac_finish,
 };
 
 /**
diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index 6d2aa77ea963..af22a11c2b8a 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h
@@ -236,6 +236,10 @@ struct plat_stmmacenet_data {
 	int (*serdes_powerup)(struct net_device *ndev, void *priv);
 	void (*serdes_powerdown)(struct net_device *ndev, void *priv);
 	void (*speed_mode_2500)(struct net_device *ndev, void *priv);
+	int (*mac_finish)(struct net_device *ndev,
+			  void *priv,
+			  unsigned int mode,
+			  phy_interface_t interface);
 	void (*ptp_clk_freq_config)(struct stmmac_priv *priv);
 	int (*init)(struct platform_device *pdev, void *priv);
 	void (*exit)(struct platform_device *pdev, void *priv);
-- 
2.34.1