netdev - [net-next 2/4] net: ethernet: renesas: rcar_gen4

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Message-ID: <20260201183745.1075399-3-niklas.soderlund+renesas@ragnatech.se>
Date: Sun,  1 Feb 2026 19:37:43 +0100
From: Niklas Söderlund <niklas.soderlund+renesas@...natech.se>
To: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Magnus Damm <magnus.damm@...il.com>,
	Richard Cochran <richardcochran@...il.com>,
	netdev@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org
Cc: Niklas Söderlund <niklas.soderlund+renesas@...natech.se>
Subject: [net-next 2/4] net: ethernet: renesas: rcar_gen4_ptp: Add helper to get clock index

Instead of accessing the Gen4 PTP specific structure directly in drivers
add a helper to read the clock index. This is done in preparation to
completely hide the Gen4 PTP specific structure from users.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@...natech.se>
---
 drivers/net/ethernet/renesas/rcar_gen4_ptp.c | 9 +++++++++
 drivers/net/ethernet/renesas/rcar_gen4_ptp.h | 2 ++
 drivers/net/ethernet/renesas/rswitch_main.c  | 2 +-
 drivers/net/ethernet/renesas/rtsn.c          | 2 +-
 4 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/renesas/rcar_gen4_ptp.c b/drivers/net/ethernet/renesas/rcar_gen4_ptp.c
index 3fd835128cc8..75bf7aac089b 100644
--- a/drivers/net/ethernet/renesas/rcar_gen4_ptp.c
+++ b/drivers/net/ethernet/renesas/rcar_gen4_ptp.c
@@ -185,6 +185,15 @@ struct rcar_gen4_ptp_private *rcar_gen4_ptp_alloc(struct platform_device *pdev,
 }
 EXPORT_SYMBOL_GPL(rcar_gen4_ptp_alloc);
 
+int rcar_gen4_ptp_clock_index(struct rcar_gen4_ptp_private *priv)
+{
+	if (!priv->initialized)
+		return -1;
+
+	return ptp_clock_index(priv->clock);
+}
+EXPORT_SYMBOL_GPL(rcar_gen4_ptp_clock_index);
+
 MODULE_AUTHOR("Yoshihiro Shimoda");
 MODULE_DESCRIPTION("Renesas R-Car Gen4 gPTP driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/net/ethernet/renesas/rcar_gen4_ptp.h b/drivers/net/ethernet/renesas/rcar_gen4_ptp.h
index b71aba873795..c141cd38a40d 100644
--- a/drivers/net/ethernet/renesas/rcar_gen4_ptp.h
+++ b/drivers/net/ethernet/renesas/rcar_gen4_ptp.h
@@ -23,4 +23,6 @@ int rcar_gen4_ptp_unregister(struct rcar_gen4_ptp_private *ptp_priv);
 struct rcar_gen4_ptp_private *rcar_gen4_ptp_alloc(struct platform_device *pdev,
 						  void __iomem *addr);
 
+int rcar_gen4_ptp_clock_index(struct rcar_gen4_ptp_private *priv);
+
 #endif	/* #ifndef __RCAR_GEN4_PTP_H__ */
diff --git a/drivers/net/ethernet/renesas/rswitch_main.c b/drivers/net/ethernet/renesas/rswitch_main.c
index ab0b40d4f4fb..433eb2b00d10 100644
--- a/drivers/net/ethernet/renesas/rswitch_main.c
+++ b/drivers/net/ethernet/renesas/rswitch_main.c
@@ -1891,7 +1891,7 @@ static int rswitch_get_ts_info(struct net_device *ndev, struct kernel_ethtool_ts
 {
 	struct rswitch_device *rdev = netdev_priv(ndev);
 
-	info->phc_index = ptp_clock_index(rdev->priv->ptp_priv->clock);
+	info->phc_index = rcar_gen4_ptp_clock_index(rdev->priv->ptp_priv);
 	info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
 				SOF_TIMESTAMPING_TX_HARDWARE |
 				SOF_TIMESTAMPING_RX_HARDWARE |
diff --git a/drivers/net/ethernet/renesas/rtsn.c b/drivers/net/ethernet/renesas/rtsn.c
index d4b955c87f1b..ce1047743970 100644
--- a/drivers/net/ethernet/renesas/rtsn.c
+++ b/drivers/net/ethernet/renesas/rtsn.c
@@ -1197,7 +1197,7 @@ static int rtsn_get_ts_info(struct net_device *ndev,
 {
 	struct rtsn_private *priv = netdev_priv(ndev);
 
-	info->phc_index = ptp_clock_index(priv->ptp_priv->clock);
+	info->phc_index = rcar_gen4_ptp_clock_index(priv->ptp_priv);
 	info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
 		SOF_TIMESTAMPING_TX_HARDWARE |
 		SOF_TIMESTAMPING_RX_HARDWARE |
-- 
2.52.0