netdev - [PATCH net-next V1 2/7] net: lan743x: Create separate Link Speed Duplex state function

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Message-ID: <20231017094208.4956-3-Raju.Lakkaraju@microchip.com>
Date: Tue, 17 Oct 2023 15:12:03 +0530
From: Raju Lakkaraju <Raju.Lakkaraju@...rochip.com>
To: <netdev@...r.kernel.org>
CC: <davem@...emloft.net>, <kuba@...nel.org>, <Bryan.Whitehead@...rochip.com>,
	<linux-kernel@...r.kernel.org>, <andrew@...n.ch>, <linux@...linux.org.uk>,
	<UNGLinuxDriver@...rochip.com>
Subject: [PATCH net-next V1 2/7] net: lan743x: Create separate Link Speed Duplex state function

Create separate Link Speed Duplex (LSD) update state function from
lan743x_sgmii_config () to use as subroutine.

Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@...rochip.com>
---
 drivers/net/ethernet/microchip/lan743x_main.c | 75 +++++++++++--------
 1 file changed, 45 insertions(+), 30 deletions(-)

diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c
index 1432032b795b..e47f0ae1770d 100644
--- a/drivers/net/ethernet/microchip/lan743x_main.c
+++ b/drivers/net/ethernet/microchip/lan743x_main.c
@@ -990,6 +990,42 @@ static int lan743x_sgmii_write(struct lan743x_adapter *adapter,
 	return ret;
 }
 
+static int lan743x_get_lsd(int speed, int duplex, u8 mss)
+{
+	enum lan743x_sgmii_lsd lsd = POWER_DOWN;
+
+	switch (speed) {
+	case SPEED_2500:
+		if (mss == MASTER_SLAVE_STATE_SLAVE)
+			lsd = LINK_2500_SLAVE;
+		else
+			lsd = LINK_2500_MASTER;
+		break;
+	case SPEED_1000:
+		if (mss == MASTER_SLAVE_STATE_SLAVE)
+			lsd = LINK_1000_SLAVE;
+		else
+			lsd = LINK_1000_MASTER;
+		break;
+	case SPEED_100:
+		if (duplex == DUPLEX_FULL)
+			lsd = LINK_100FD;
+		else
+			lsd = LINK_100HD;
+		break;
+	case SPEED_10:
+		if (duplex == DUPLEX_FULL)
+			lsd = LINK_10FD;
+		else
+			lsd = LINK_10HD;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return lsd;
+}
+
 static int lan743x_sgmii_mpll_set(struct lan743x_adapter *adapter,
 				  u16 baud)
 {
@@ -1177,42 +1213,21 @@ static int lan743x_sgmii_config(struct lan743x_adapter *adapter)
 {
 	struct net_device *netdev = adapter->netdev;
 	struct phy_device *phydev = netdev->phydev;
-	enum lan743x_sgmii_lsd lsd = POWER_DOWN;
 	bool status;
 	int ret;
 
-	switch (phydev->speed) {
-	case SPEED_2500:
-		if (phydev->master_slave_state == MASTER_SLAVE_STATE_MASTER)
-			lsd = LINK_2500_MASTER;
-		else
-			lsd = LINK_2500_SLAVE;
-		break;
-	case SPEED_1000:
-		if (phydev->master_slave_state == MASTER_SLAVE_STATE_MASTER)
-			lsd = LINK_1000_MASTER;
-		else
-			lsd = LINK_1000_SLAVE;
-		break;
-	case SPEED_100:
-		if (phydev->duplex)
-			lsd = LINK_100FD;
-		else
-			lsd = LINK_100HD;
-		break;
-	case SPEED_10:
-		if (phydev->duplex)
-			lsd = LINK_10FD;
-		else
-			lsd = LINK_10HD;
-		break;
-	default:
+	ret = lan743x_get_lsd(phydev->speed, phydev->duplex,
+			      phydev->master_slave_state);
+	if (ret < 0) {
 		netif_err(adapter, drv, adapter->netdev,
-			  "Invalid speed %d\n", phydev->speed);
-		return -EINVAL;
+			  "error %d link-speed-duplex(LSD) invalid\n", ret);
+		return ret;
 	}
 
-	adapter->sgmii_lsd = lsd;
+	adapter->sgmii_lsd = ret;
+	netif_dbg(adapter, drv, adapter->netdev,
+		  "Link Speed Duplex (lsd) : 0x%X\n", adapter->sgmii_lsd);
+
 	ret = lan743x_sgmii_aneg_update(adapter);
 	if (ret < 0) {
 		netif_err(adapter, drv, adapter->netdev,
-- 
2.34.1