netdev - [net-next,v2 1/7] net: rswitch: Move definition of S4 gPTP offset

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Message-ID: <20251104222420.882731-2-niklas.soderlund+renesas@ragnatech.se>
Date: Tue,  4 Nov 2025 23:24:14 +0100
From: Niklas Söderlund <niklas.soderlund+renesas@...natech.se>
To: Paul Barker <paul@...rker.dev>,
	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>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.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,v2 1/7] net: rswitch: Move definition of S4 gPTP offset

The files rcar_gen4_ptp.{c,h} implements an abstraction of the gPTP
support implemented together with different other IP blocks. The first
device added which supported this was RSWITCH on R-Car S4.

While doing so the RSWITCH R-Car S4 specific offset was added to the
generic Gen4 gPTP header file. Move it to the RSWITCH driver to make it
clear it only applies to this driver.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@...natech.se>
---
* Changes since v1
- Change the prefix of the define to RSWITCH_.
---
 drivers/net/ethernet/renesas/rcar_gen4_ptp.h | 2 --
 drivers/net/ethernet/renesas/rswitch_main.c  | 4 +++-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/renesas/rcar_gen4_ptp.h b/drivers/net/ethernet/renesas/rcar_gen4_ptp.h
index f77e79e47357..536badd798cc 100644
--- a/drivers/net/ethernet/renesas/rcar_gen4_ptp.h
+++ b/drivers/net/ethernet/renesas/rcar_gen4_ptp.h
@@ -9,8 +9,6 @@
 
 #include <linux/ptp_clock_kernel.h>
 
-#define RCAR_GEN4_GPTP_OFFSET_S4	0x00018000
-
 /* driver's definitions */
 #define RCAR_GEN4_RXTSTAMP_ENABLED		BIT(0)
 #define RCAR_GEN4_RXTSTAMP_TYPE_V2_L2_EVENT	BIT(1)
diff --git a/drivers/net/ethernet/renesas/rswitch_main.c b/drivers/net/ethernet/renesas/rswitch_main.c
index f21a814aa9d1..24ed33ac4bcd 100644
--- a/drivers/net/ethernet/renesas/rswitch_main.c
+++ b/drivers/net/ethernet/renesas/rswitch_main.c
@@ -30,6 +30,8 @@
 #include "rswitch.h"
 #include "rswitch_l2.h"
 
+#define RSWITCH_GPTP_OFFSET_S4 0x00018000
+
 static int rswitch_reg_wait(void __iomem *addr, u32 offs, u32 mask, u32 expected)
 {
 	u32 val;
@@ -2175,7 +2177,7 @@ static int renesas_eth_sw_probe(struct platform_device *pdev)
 	if (IS_ERR(priv->addr))
 		return PTR_ERR(priv->addr);
 
-	priv->ptp_priv->addr = priv->addr + RCAR_GEN4_GPTP_OFFSET_S4;
+	priv->ptp_priv->addr = priv->addr + RSWITCH_GPTP_OFFSET_S4;
 
 	ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(40));
 	if (ret < 0) {
-- 
2.51.1