linux-kernel - [PATCH net-next 1/2] net: mscc: use the PHY MII ioctl interface when possible

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Date:   Tue, 26 May 2020 17:01:48 +0200
From:   Antoine Tenart <antoine.tenart@...tlin.com>
To:     davem@...emloft.net, andrew@...n.ch, f.fainelli@...il.com,
        hkallweit1@...il.com
Cc:     Antoine Tenart <antoine.tenart@...tlin.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        alexandre.belloni@...tlin.com, thomas.petazzoni@...tlin.com,
        allan.nielsen@...rochip.com, vladimir.oltean@....com
Subject: [PATCH net-next 1/2] net: mscc: use the PHY MII ioctl interface when possible

Allow ioctl to be implemented by the PHY, when a PHY is attached to the
Ocelot switch. In case the ioctl is a request to set or get the hardware
timestamp, use the Ocelot switch implementation for now.

Signed-off-by: Antoine Tenart <antoine.tenart@...tlin.com>
---
 drivers/net/ethernet/mscc/ocelot.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
index e621c4c3ee86..2151c08a57c7 100644
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -1204,18 +1204,16 @@ static int ocelot_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 	struct ocelot *ocelot = priv->port.ocelot;
 	int port = priv->chip_port;
 
-	/* The function is only used for PTP operations for now */
-	if (!ocelot->ptp)
-		return -EOPNOTSUPP;
-
-	switch (cmd) {
-	case SIOCSHWTSTAMP:
-		return ocelot_hwstamp_set(ocelot, port, ifr);
-	case SIOCGHWTSTAMP:
-		return ocelot_hwstamp_get(ocelot, port, ifr);
-	default:
-		return -EOPNOTSUPP;
+	if (ocelot->ptp) {
+		switch (cmd) {
+		case SIOCSHWTSTAMP:
+			return ocelot_hwstamp_set(ocelot, port, ifr);
+		case SIOCGHWTSTAMP:
+			return ocelot_hwstamp_get(ocelot, port, ifr);
+		}
 	}
+
+	return phy_mii_ioctl(dev->phydev, ifr, cmd);
 }
 
 static const struct net_device_ops ocelot_port_netdev_ops = {
-- 
2.26.2