openwrt/target/linux/generic/backport-6.6/708-v6.8-01-net-phy-at803x-move-specific-qca808x-config_aneg-to-.patch

From 8e732f1c6f2dc5e18f766d0f1b11df9db2dd044a Mon Sep 17 00:00:00 2001
From: Christian Marangi <[email protected]>
Date: Thu, 14 Dec 2023 01:44:31 +0100
Subject: [PATCH 1/2] net: phy: at803x: move specific qca808x config_aneg to
 dedicated function

Move specific qca808x config_aneg to dedicated function to permit easier
split of qca808x portion from at803x driver.

Signed-off-by: Christian Marangi <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
---
 drivers/net/phy/at803x.c | 66 ++++++++++++++++++++++++----------------
 1 file changed, 40 insertions(+), 26 deletions(-)

--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -1045,9 +1045,8 @@ static int at803x_config_mdix(struct phy
 			  FIELD_PREP(AT803X_SFC_MDI_CROSSOVER_MODE_M, val));
 }
 
-static int at803x_config_aneg(struct phy_device *phydev)
+static int at803x_prepare_config_aneg(struct phy_device *phydev)
 {
-	struct at803x_priv *priv = phydev->priv;
 	int ret;
 
 	ret = at803x_config_mdix(phydev, phydev->mdix_ctrl);
@@ -1064,33 +1063,22 @@ static int at803x_config_aneg(struct phy
 			return ret;
 	}
 
-	if (priv->is_1000basex)
-		return genphy_c37_config_aneg(phydev);
-
-	/* Do not restart auto-negotiation by setting ret to 0 defautly,
-	 * when calling __genphy_config_aneg later.
-	 */
-	ret = 0;
-
-	if (phydev->drv->phy_id == QCA8081_PHY_ID) {
-		int phy_ctrl = 0;
+	return 0;
+}
 
-		/* The reg MII_BMCR also needs to be configured for force mode, the
-		 * genphy_config_aneg is also needed.
-		 */
-		if (phydev->autoneg == AUTONEG_DISABLE)
-			genphy_c45_pma_setup_forced(phydev);
+static int at803x_config_aneg(struct phy_device *phydev)
+{
+	struct at803x_priv *priv = phydev->priv;
+	int ret;
 
-		if (linkmode_test_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, phydev->advertising))
-			phy_ctrl = MDIO_AN_10GBT_CTRL_ADV2_5G;
+	ret = at803x_prepare_config_aneg(phydev);
+	if (ret)
+		return ret;
 
-		ret = phy_modify_mmd_changed(phydev, MDIO_MMD_AN, MDIO_AN_10GBT_CTRL,
-				MDIO_AN_10GBT_CTRL_ADV2_5G, phy_ctrl);
-		if (ret < 0)
-			return ret;
-	}
+	if (priv->is_1000basex)
+		return genphy_c37_config_aneg(phydev);
 
-	return __genphy_config_aneg(phydev, ret);
+	return genphy_config_aneg(phydev);
 }
 
 static int at803x_get_downshift(struct phy_device *phydev, u8 *d)
@@ -2118,6 +2106,32 @@ static int qca808x_get_features(struct p
 	return 0;
 }
 
+static int qca808x_config_aneg(struct phy_device *phydev)
+{
+	int phy_ctrl = 0;
+	int ret;
+
+	ret = at803x_prepare_config_aneg(phydev);
+	if (ret)
+		return ret;
+
+	/* The reg MII_BMCR also needs to be configured for force mode, the
+	 * genphy_config_aneg is also needed.
+	 */
+	if (phydev->autoneg == AUTONEG_DISABLE)
+		genphy_c45_pma_setup_forced(phydev);
+
+	if (linkmode_test_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, phydev->advertising))
+		phy_ctrl = MDIO_AN_10GBT_CTRL_ADV2_5G;
+
+	ret = phy_modify_mmd_changed(phydev, MDIO_MMD_AN, MDIO_AN_10GBT_CTRL,
+				     MDIO_AN_10GBT_CTRL_ADV2_5G, phy_ctrl);
+	if (ret < 0)
+		return ret;
+
+	return __genphy_config_aneg(phydev, ret);
+}
+
 static void qca808x_link_change_notify(struct phy_device *phydev)
 {
 	/* Assert interface sgmii fifo on link down, deassert it on link up,
@@ -2295,7 +2309,7 @@ static struct phy_driver at803x_driver[]
 	.set_wol		= at803x_set_wol,
 	.get_wol		= at803x_get_wol,
 	.get_features		= qca808x_get_features,
-	.config_aneg		= at803x_config_aneg,
+	.config_aneg		= qca808x_config_aneg,
 	.suspend		= genphy_suspend,
 	.resume			= genphy_resume,
 	.read_status		= qca808x_read_status,