Merge branch 'stmmac-eee-fix'

Wong Vee Khee says:

====================
net: stmmac: Turn off EEE on MAC link down

This patch series ensure PCS EEE is turned off on the event of MAC
link down.

Tested on Intel AlderLake-S (STMMAC + MaxLinear GPY211 PHY).
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

@@ -477,6 +477,10 @@ bool stmmac_eee_init(struct stmmac_priv *priv)
 			stmmac_lpi_entry_timer_config(priv, 0);
 			del_timer_sync(&priv->eee_ctrl_timer);
 			stmmac_set_eee_timer(priv, priv->hw, 0, eee_tw_timer);
+			if (priv->hw->xpcs)
+				xpcs_config_eee(priv->hw->xpcs,
+						priv->plat->mult_fact_100ns,
+						false);
 		}
 		mutex_unlock(&priv->lock);
 		return false;
@@ -1038,7 +1042,7 @@ static void stmmac_mac_link_down(struct phylink_config *config,
 	stmmac_mac_set(priv, priv->ioaddr, false);
 	priv->eee_active = false;
 	priv->tx_lpi_enabled = false;
-	stmmac_eee_init(priv);
+	priv->eee_enabled = stmmac_eee_init(priv);
 	stmmac_set_eee_pls(priv, priv->hw, false);
 
 	if (priv->dma_cap.fpesel)

drivers/net/pcs/pcs-xpcs.c

@@ -666,6 +666,10 @@ int xpcs_config_eee(struct dw_xpcs *xpcs, int mult_fact_100ns, int enable)
 {
 	int ret;
 
+	ret = xpcs_read(xpcs, MDIO_MMD_VEND2, DW_VR_MII_EEE_MCTRL0);
+	if (ret < 0)
+		return ret;
+
 	if (enable) {
 	/* Enable EEE */
 		ret = DW_VR_MII_EEE_LTX_EN | DW_VR_MII_EEE_LRX_EN |
@@ -673,9 +677,6 @@ int xpcs_config_eee(struct dw_xpcs *xpcs, int mult_fact_100ns, int enable)
 		      DW_VR_MII_EEE_TX_EN_CTRL | DW_VR_MII_EEE_RX_EN_CTRL |
 		      mult_fact_100ns << DW_VR_MII_EEE_MULT_FACT_100NS_SHIFT;
 	} else {
-		ret = xpcs_read(xpcs, MDIO_MMD_VEND2, DW_VR_MII_EEE_MCTRL0);
-		if (ret < 0)
-			return ret;
 		ret &= ~(DW_VR_MII_EEE_LTX_EN | DW_VR_MII_EEE_LRX_EN |
 		       DW_VR_MII_EEE_TX_QUIET_EN | DW_VR_MII_EEE_RX_QUIET_EN |
 		       DW_VR_MII_EEE_TX_EN_CTRL | DW_VR_MII_EEE_RX_EN_CTRL |
@@ -690,7 +691,11 @@ int xpcs_config_eee(struct dw_xpcs *xpcs, int mult_fact_100ns, int enable)
 	if (ret < 0)
 		return ret;
 
-	ret |= DW_VR_MII_EEE_TRN_LPI;
+	if (enable)
+		ret |= DW_VR_MII_EEE_TRN_LPI;
+	else
+		ret &= ~DW_VR_MII_EEE_TRN_LPI;
+
 	return xpcs_write(xpcs, MDIO_MMD_VEND2, DW_VR_MII_EEE_MCTRL1, ret);
 }
 EXPORT_SYMBOL_GPL(xpcs_config_eee);