linux-kernel - [PATCH v2] net: phy: marvell: Enable interrupt function on LED2 pin

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Message-Id: <20180405204029.665-1-esben.haabendal@gmail.com>
Date:   Thu,  5 Apr 2018 22:40:29 +0200
From:   Esben Haabendal <esben.haabendal@...il.com>
To:     netdev@...r.kernel.org
Cc:     Esben Haabendal <eha@...f.com>,
        Rasmus Villemoes <rasmus.villemoes@...vas.dk>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v2] net: phy: marvell: Enable interrupt function on LED2 pin

From: Esben Haabendal <eha@...f.com>

The LED2[2]/INTn pin on Marvell 88E1318S as well as 88E1510/12/14/18 needs
to be configured to be usable as interrupt not only when WOL is enabled,
but whenever we rely on interrupts from the PHY.

Signed-off-by: Esben Haabendal <eha@...f.com>
Cc: Rasmus Villemoes <rasmus.villemoes@...vas.dk>
---
 drivers/net/phy/marvell.c | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
index 0e0978d8a0eb..a6ad0255c512 100644
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -828,6 +828,22 @@ static int m88e1121_config_init(struct phy_device *phydev)
 	return marvell_config_init(phydev);
 }
 
+static int m88e1318_config_init(struct phy_device *phydev)
+{
+	if (phy_interrupt_is_valid(phydev)) {
+		int err = phy_modify_paged(
+			phydev, MII_MARVELL_LED_PAGE,
+			MII_88E1318S_PHY_LED_TCR,
+			MII_88E1318S_PHY_LED_TCR_FORCE_INT,
+			MII_88E1318S_PHY_LED_TCR_INTn_ENABLE |
+			MII_88E1318S_PHY_LED_TCR_INT_ACTIVE_LOW);
+		if (err < 0)
+			return err;
+	}
+
+	return m88e1121_config_init(phydev);
+}
+
 static int m88e1510_config_init(struct phy_device *phydev)
 {
 	int err;
@@ -870,7 +886,7 @@ static int m88e1510_config_init(struct phy_device *phydev)
 		phydev->advertising &= ~pause;
 	}
 
-	return m88e1121_config_init(phydev);
+	return m88e1318_config_init(phydev);
 }
 
 static int m88e1118_config_aneg(struct phy_device *phydev)
@@ -2086,7 +2102,7 @@ static struct phy_driver marvell_drivers[] = {
 		.features = PHY_GBIT_FEATURES,
 		.flags = PHY_HAS_INTERRUPT,
 		.probe = marvell_probe,
-		.config_init = &m88e1121_config_init,
+		.config_init = &m88e1318_config_init,
 		.config_aneg = &m88e1318_config_aneg,
 		.read_status = &marvell_read_status,
 		.ack_interrupt = &marvell_ack_interrupt,
-- 
2.16.3