linux-kernel - [PATCH RFC net-next 08/23] net: dsa: lantiq_gswip: store switch API version in priv

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Message-ID: <aKDhfn-92oPzDcYY@pidgin.makrotopia.org>
Date: Sat, 16 Aug 2025 20:52:30 +0100
From: Daniel Golle <daniel@...rotopia.org>
To: Andrew Lunn <andrew@...n.ch>, 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>,
	Hauke Mehrtens <hauke@...ke-m.de>, Simon Horman <horms@...nel.org>,
	Russell King <linux@...linux.org.uk>,
	Florian Fainelli <f.fainelli@...il.com>,
	Arkadi Sharshevsky <arkadis@...lanox.com>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Cc: Andreas Schirm <andreas.schirm@...mens.com>,
	Lukas Stockmann <lukas.stockmann@...mens.com>,
	Alexander Sverdlin <alexander.sverdlin@...mens.com>,
	Peter Christen <peter.christen@...mens.com>,
	Avinash Jayaraman <ajayaraman@...linear.com>,
	Bing tao Xu <bxu@...linear.com>, Liang Xu <lxu@...linear.com>,
	Juraj Povazanec <jpovazanec@...linear.com>,
	"Fanni (Fang-Yi) Chan" <fchan@...linear.com>,
	"Benny (Ying-Tsan) Weng" <yweng@...linear.com>,
	"Livia M. Rosu" <lrosu@...linear.com>,
	John Crispin <john@...ozen.org>
Subject: [PATCH RFC net-next 08/23] net: dsa: lantiq_gswip: store switch API
 version in priv

Store the switch API version in struct gswip_priv to prepare supporting
newer features such as 4096 VLANs and per-port configurable learning.

Signed-off-by: Daniel Golle <daniel@...rotopia.org>
---
 drivers/net/dsa/lantiq_gswip.c | 13 ++++++-------
 drivers/net/dsa/lantiq_gswip.h |  1 +
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/net/dsa/lantiq_gswip.c b/drivers/net/dsa/lantiq_gswip.c
index a66466bac1a8..16b92af9ff23 100644
--- a/drivers/net/dsa/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq_gswip.c
@@ -1882,7 +1882,6 @@ static int gswip_probe(struct platform_device *pdev)
 	struct gswip_priv *priv;
 	int err;
 	int i;
-	u32 version;
 
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
@@ -1915,10 +1914,10 @@ static int gswip_probe(struct platform_device *pdev)
 	priv->ds->phylink_mac_ops = &gswip_phylink_mac_ops;
 	priv->dev = dev;
 	mutex_init(&priv->pce_table_lock);
-	version = gswip_switch_r(priv, GSWIP_VERSION);
+	priv->version = gswip_switch_r(priv, GSWIP_VERSION);
 
 	np = dev->of_node;
-	switch (version) {
+	switch (priv->version) {
 	case GSWIP_VERSION_2_0:
 	case GSWIP_VERSION_2_1:
 		if (!of_device_is_compatible(np, "lantiq,xrx200-gswip"))
@@ -1932,13 +1931,13 @@ static int gswip_probe(struct platform_device *pdev)
 		break;
 	default:
 		return dev_err_probe(dev, -ENOENT,
-				     "unknown GSWIP version: 0x%x\n", version);
+				     "unknown GSWIP version: 0x%x\n", priv->version);
 	}
 
 	/* bring up the mdio bus */
 	gphy_fw_np = of_get_compatible_child(dev->of_node, "lantiq,gphy-fw");
 	if (gphy_fw_np) {
-		err = gswip_gphy_fw_list(priv, gphy_fw_np, version);
+		err = gswip_gphy_fw_list(priv, gphy_fw_np, priv->version);
 		of_node_put(gphy_fw_np);
 		if (err)
 			return dev_err_probe(dev, err,
@@ -1965,8 +1964,8 @@ static int gswip_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, priv);
 
 	dev_info(dev, "probed GSWIP version %lx mod %lx\n",
-		 (version & GSWIP_VERSION_REV_MASK) >> GSWIP_VERSION_REV_SHIFT,
-		 (version & GSWIP_VERSION_MOD_MASK) >> GSWIP_VERSION_MOD_SHIFT);
+		 (priv->version & GSWIP_VERSION_REV_MASK) >> GSWIP_VERSION_REV_SHIFT,
+		 (priv->version & GSWIP_VERSION_MOD_MASK) >> GSWIP_VERSION_MOD_SHIFT);
 	return 0;
 
 disable_switch:
diff --git a/drivers/net/dsa/lantiq_gswip.h b/drivers/net/dsa/lantiq_gswip.h
index c68848fb1c2d..433b65b047dd 100644
--- a/drivers/net/dsa/lantiq_gswip.h
+++ b/drivers/net/dsa/lantiq_gswip.h
@@ -260,6 +260,7 @@ struct gswip_priv {
 	int num_gphy_fw;
 	struct gswip_gphy_fw *gphy_fw;
 	u32 port_vlan_filter;
+	u32 version;
 	struct mutex pce_table_lock;
 };
 
-- 
2.50.1