netdev - [PATCH net-next v2 6/6] net: stmmac: ethqos: clean up setting serdes speed

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Message-Id: <E1sCErj-00EOQ9-Vh@rmk-PC.armlinux.org.uk>
Date: Wed, 29 May 2024 09:40:59 +0100
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Serge Semin <fancer.lancer@...il.com>
Cc: Andrew Halaney <ahalaney@...hat.com>,
	Vinod Koul <vkoul@...nel.org>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Jose Abreu <joabreu@...opsys.com>,
	"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>,
	netdev@...r.kernel.org,
	linux-arm-msm@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH net-next v2 6/6] net: stmmac: ethqos: clean up setting serdes
 speed

There are four repititions of the same sequence of code, three of which
are identical. Pull these out into a separate function to improve
readability.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 .../stmicro/stmmac/dwmac-qcom-ethqos.c        | 24 +++++++++----------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
index e254b21fdb59..d9eed415b0b7 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
@@ -605,6 +605,14 @@ static int ethqos_configure_rgmii(struct qcom_ethqos *ethqos)
 	return 0;
 }
 
+static void ethqos_set_serdes_speed(struct qcom_ethqos *ethqos, int speed)
+{
+	if (ethqos->serdes_speed != speed) {
+		phy_set_speed(ethqos->serdes_phy, speed);
+		ethqos->serdes_speed = speed;
+	}
+}
+
 /* On interface toggle MAC registers gets reset.
  * Configure MAC block for SGMII on ethernet phy link up
  */
@@ -622,9 +630,7 @@ static int ethqos_configure_sgmii(struct qcom_ethqos *ethqos)
 		rgmii_updatel(ethqos, RGMII_CONFIG2_RGMII_CLK_SEL_CFG,
 			      RGMII_CONFIG2_RGMII_CLK_SEL_CFG,
 			      RGMII_IO_MACRO_CONFIG2);
-		if (ethqos->serdes_speed != SPEED_2500)
-			phy_set_speed(ethqos->serdes_phy, SPEED_2500);
-		ethqos->serdes_speed = SPEED_2500;
+		ethqos_set_serdes_speed(ethqos, SPEED_2500);
 		stmmac_pcs_ctrl_ane(priv, priv->ioaddr, 0, 0, 0);
 		break;
 	case SPEED_1000:
@@ -632,16 +638,12 @@ static int ethqos_configure_sgmii(struct qcom_ethqos *ethqos)
 		rgmii_updatel(ethqos, RGMII_CONFIG2_RGMII_CLK_SEL_CFG,
 			      RGMII_CONFIG2_RGMII_CLK_SEL_CFG,
 			      RGMII_IO_MACRO_CONFIG2);
-		if (ethqos->serdes_speed != SPEED_1000)
-			phy_set_speed(ethqos->serdes_phy, SPEED_1000);
-		ethqos->serdes_speed = SPEED_1000;
+		ethqos_set_serdes_speed(ethqos, SPEED_1000);
 		stmmac_pcs_ctrl_ane(priv, priv->ioaddr, 1, 0, 0);
 		break;
 	case SPEED_100:
 		val |= ETHQOS_MAC_CTRL_PORT_SEL | ETHQOS_MAC_CTRL_SPEED_MODE;
-		if (ethqos->serdes_speed != SPEED_1000)
-			phy_set_speed(ethqos->serdes_phy, SPEED_1000);
-		ethqos->serdes_speed = SPEED_1000;
+		ethqos_set_serdes_speed(ethqos, SPEED_1000);
 		stmmac_pcs_ctrl_ane(priv, priv->ioaddr, 1, 0, 0);
 		break;
 	case SPEED_10:
@@ -651,9 +653,7 @@ static int ethqos_configure_sgmii(struct qcom_ethqos *ethqos)
 			      FIELD_PREP(RGMII_CONFIG_SGMII_CLK_DVDR,
 					 SGMII_10M_RX_CLK_DVDR),
 			      RGMII_IO_MACRO_CONFIG);
-		if (ethqos->serdes_speed != SPEED_1000)
-			phy_set_speed(ethqos->serdes_phy, ethqos->speed);
-		ethqos->serdes_speed = SPEED_1000;
+		ethqos_set_serdes_speed(ethqos, SPEED_1000);
 		stmmac_pcs_ctrl_ane(priv, priv->ioaddr, 1, 0, 0);
 		break;
 	}
-- 
2.30.2