libreCMC/target/linux/ramips/patches-4.4/0511-net-mediatek-add-support-for-the-multiphy-carrier-pa.patch

From 6543b4cef96c12903f5ec5c015cd223a6b3c9a33 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Mon, 14 Dec 2015 21:16:59 +0100
Subject: [PATCH 511/513] net: mediatek: add support for the multiphy carrier
 patch

Signed-off-by: John Crispin <blogic@openwrt.org>
---
 drivers/net/ethernet/mediatek/gsw_mt7620.c  |    1 +
 drivers/net/ethernet/mediatek/gsw_mt7620.h  |    1 +
 drivers/net/ethernet/mediatek/gsw_mt7621.c  |    1 +
 drivers/net/ethernet/mediatek/mdio.c        |    1 +
 drivers/net/ethernet/mediatek/mdio_mt7620.c |   12 ++++++++++++
 5 files changed, 16 insertions(+)

--- a/drivers/net/ethernet/mediatek/gsw_mt7620.c
+++ b/drivers/net/ethernet/mediatek/gsw_mt7620.c
@@ -54,6 +54,7 @@ static irqreturn_t gsw_interrupt_mt7620(
 
 			priv->link[i] = link;
 		}
+	mt7620_handle_carrier(priv);
 	mtk_switch_w32(gsw, status, GSW_REG_ISR);
 
 	return IRQ_HANDLED;
--- a/drivers/net/ethernet/mediatek/gsw_mt7620.h
+++ b/drivers/net/ethernet/mediatek/gsw_mt7620.h
@@ -113,5 +113,6 @@ u32 mt7530_mdio_r32(struct mt7620_gsw *g
 u32 _mt7620_mii_write(struct mt7620_gsw *gsw, u32 phy_addr,
 			     u32 phy_register, u32 write_data);
 u32 _mt7620_mii_read(struct mt7620_gsw *gsw, int phy_addr, int phy_reg);
+void mt7620_handle_carrier(struct fe_priv *priv);
 
 #endif
--- a/drivers/net/ethernet/mediatek/gsw_mt7621.c
+++ b/drivers/net/ethernet/mediatek/gsw_mt7621.c
@@ -60,6 +60,7 @@ static irqreturn_t gsw_interrupt_mt7621(
 			}
 		}
 
+	mt7620_handle_carrier(priv);
 	mt7530_mdio_w32(gsw, 0x700c, 0x1f);
 
 	return IRQ_HANDLED;
--- a/drivers/net/ethernet/mediatek/mdio.c
+++ b/drivers/net/ethernet/mediatek/mdio.c
@@ -89,6 +89,7 @@ int fe_connect_phy_node(struct fe_priv *
 
 	phydev->supported &= PHY_GBIT_FEATURES;
 	phydev->advertising = phydev->supported;
+	phydev->no_auto_carrier_off = 1;
 
 	dev_info(priv->device,
 		 "connected port %d to PHY at %s [uid=%08x, driver=%s]\n",
--- a/drivers/net/ethernet/mediatek/mdio_mt7620.c
+++ b/drivers/net/ethernet/mediatek/mdio_mt7620.c
@@ -137,6 +137,17 @@ int mt7620_has_carrier(struct fe_priv *p
 }
 
 
+void mt7620_handle_carrier(struct fe_priv *priv)
+{
+	if (!priv->phy)
+		return;
+
+	if (mt7620_has_carrier(priv))
+		netif_carrier_on(priv->netdev);
+	else
+		netif_carrier_off(priv->netdev);
+}
+
 void mt7620_print_link_state(struct fe_priv *priv, int port, int link,
 			     int speed, int duplex)
 {
@@ -153,4 +164,5 @@ void mt7620_mdio_link_adjust(struct fe_p
 	mt7620_print_link_state(priv, port, priv->link[port],
 				priv->phy->speed[port],
 				(priv->phy->duplex[port] == DUPLEX_FULL));
+	mt7620_handle_carrier(priv);
 }