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

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Message-ID: <4d9e0665abf7408988fc4ce20c26a08f@bgmail102.nvidia.com>
Date:   Thu, 5 Apr 2018 14:00:53 +0000
From:   Bhadram Varka <vbhadram@...dia.com>
To:     Esben Haabendal <esben.haabendal@...il.com>
CC:     Esben Haabendal <eha@...f.com>,
        Rasmus Villemoes <rasmus.villemoes@...vas.dk>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        open list <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [PATCH] net: phy: marvell: Enable interrupt function on LED2 pin

Hi Esben,

-----Original Message-----
From: netdev-owner@...r.kernel.org <netdev-owner@...r.kernel.org> On Behalf Of Esben Haabendal
Sent: Thursday, April 05, 2018 7:05 PM
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>; open list <linux-kernel@...r.kernel.org>
Subject: [PATCH] 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 | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c index 0e0978d8a0eb..f03a510f1247 100644
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -457,6 +457,21 @@ static int marvell_of_reg_init(struct phy_device *phydev)  }  #endif /* CONFIG_OF_MDIO */
 
+static int m88e1318_config_intr(struct phy_device *phydev) {
+	int err;
+
+	err = marvell_config_intr(phydev);
+	if (err)
+		return err;
+
+	/* Setup LED[2] as interrupt pin (active low) */
+	return phy_modify(phydev, 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);

Can we move this part of the code to m88e1121_config_init() ?

Every time whether we disable or enable the interrupts this part of code will execute.

Thanks!