netdev - [PATCH net-next 4/5] net: dsa: hellcreek: convert to phylink_generic

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Message-Id: <E1ms2tf-00ECJN-Ag@rmk-PC.armlinux.org.uk>
Date:   Tue, 30 Nov 2021 13:10:11 +0000
From:   "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To:     netdev@...r.kernel.org
Cc:     Andrew Lunn <andrew@...n.ch>,
        "David S. Miller" <davem@...emloft.net>,
        Florian Fainelli <f.fainelli@...il.com>,
        Hauke Mehrtens <hauke@...ke-m.de>,
        Jakub Kicinski <kuba@...nel.org>,
        Kurt Kanzenbach <kurt@...utronix.de>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>
Subject: [PATCH net-next 4/5] net: dsa: hellcreek: convert to
 phylink_generic_validate()

Populate the supported interfaces and MAC capabilities for the
hellcreek DSA switch and remove the old validate implementation to
allow DSA to use phylink_generic_validate() for this switch driver.

The switch actually only supports MII and RGMII, but as phylib defaults
to GMII, we need to include this interface mode to keep existing DT
working.

Reviewed-by: Kurt Kanzenbach <kurt@...utronix.de>
Tested-by: Kurt Kanzenbach <kurt@...utronix.de>
Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 drivers/net/dsa/hirschmann/hellcreek.c | 24 +++++++++++++-----------
 1 file changed, 13 insertions(+), 11 deletions(-)

diff --git a/drivers/net/dsa/hirschmann/hellcreek.c b/drivers/net/dsa/hirschmann/hellcreek.c
index 4e0b53d94b52..86839b43011b 100644
--- a/drivers/net/dsa/hirschmann/hellcreek.c
+++ b/drivers/net/dsa/hirschmann/hellcreek.c
@@ -1384,14 +1384,19 @@ static void hellcreek_teardown(struct dsa_switch *ds)
 	dsa_devlink_resources_unregister(ds);
 }
 
-static void hellcreek_phylink_validate(struct dsa_switch *ds, int port,
-				       unsigned long *supported,
-				       struct phylink_link_state *state)
+static void hellcreek_phylink_get_caps(struct dsa_switch *ds, int port,
+				       struct phylink_config *config)
 {
-	__ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
 	struct hellcreek *hellcreek = ds->priv;
 
-	dev_dbg(hellcreek->dev, "Phylink validate for port %d\n", port);
+	__set_bit(PHY_INTERFACE_MODE_MII, config->supported_interfaces);
+	__set_bit(PHY_INTERFACE_MODE_RGMII, config->supported_interfaces);
+
+	/* Include GMII - the hardware does not support this interface
+	 * mode, but it's the default interface mode for phylib, so we
+	 * need it for compatibility with existing DT.
+	 */
+	__set_bit(PHY_INTERFACE_MODE_GMII, config->supported_interfaces);
 
 	/* The MAC settings are a hardware configuration option and cannot be
 	 * changed at run time or by strapping. Therefore the attached PHYs
@@ -1399,12 +1404,9 @@ static void hellcreek_phylink_validate(struct dsa_switch *ds, int port,
 	 * by the hardware.
 	 */
 	if (hellcreek->pdata->is_100_mbits)
-		phylink_set(mask, 100baseT_Full);
+		config->mac_capabilities = MAC_100FD;
 	else
-		phylink_set(mask, 1000baseT_Full);
-
-	linkmode_and(supported, supported, mask);
-	linkmode_and(state->advertising, state->advertising, mask);
+		config->mac_capabilities = MAC_1000FD;
 }
 
 static int
@@ -1755,7 +1757,7 @@ static const struct dsa_switch_ops hellcreek_ds_ops = {
 	.get_strings	       = hellcreek_get_strings,
 	.get_tag_protocol      = hellcreek_get_tag_protocol,
 	.get_ts_info	       = hellcreek_get_ts_info,
-	.phylink_validate      = hellcreek_phylink_validate,
+	.phylink_get_caps      = hellcreek_phylink_get_caps,
 	.port_bridge_flags     = hellcreek_bridge_flags,
 	.port_bridge_join      = hellcreek_port_bridge_join,
 	.port_bridge_leave     = hellcreek_port_bridge_leave,
-- 
2.30.2