netdev - [PATCH 3/9] net: dsa: mv88e6xxx: implement get_phy

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Date:   Tue,  8 Nov 2022 09:23:24 +0100
From:   Lukasz Majewski <lukma@...x.de>
To:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        Matthias Schiffer <matthias.schiffer@...tq-group.com>
Subject: [PATCH 3/9] net: dsa: mv88e6xxx: implement get_phy_address

From: Matthias Schiffer <matthias.schiffer@...tq-group.com>

Avoid the need to specify a PHY for each physical port in the device tree
when phy_base_addr is not 0 (6250 and 6341 families).

This change should be backwards-compatible with existing device trees,
as it only adds sensible defaults where explicit definitions were
required before.

Signed-off-by: Matthias Schiffer <matthias.schiffer@...tq-group.com>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 2479be3a1e35..d51fd1966be9 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -6362,6 +6362,13 @@ static enum dsa_tag_protocol mv88e6xxx_get_tag_protocol(struct dsa_switch *ds,
 	return chip->tag_protocol;
 }
 
+static int mv88e6xxx_get_phy_address(struct dsa_switch *ds, int port)
+{
+	struct mv88e6xxx_chip *chip = ds->priv;
+
+	return chip->phy_base_addr + port;
+}
+
 static int mv88e6xxx_change_tag_protocol(struct dsa_switch *ds,
 					 enum dsa_tag_protocol proto)
 {
@@ -6887,6 +6894,7 @@ static const struct dsa_switch_ops mv88e6xxx_switch_ops = {
 	.phylink_mac_link_up	= mv88e6xxx_mac_link_up,
 	.get_strings		= mv88e6xxx_get_strings,
 	.get_ethtool_stats	= mv88e6xxx_get_ethtool_stats,
+	.get_phy_address        = mv88e6xxx_get_phy_address,
 	.get_sset_count		= mv88e6xxx_get_sset_count,
 	.port_enable		= mv88e6xxx_port_enable,
 	.port_disable		= mv88e6xxx_port_disable,
-- 
2.37.2