linux-kernel - [PATCH v3 net-next 1/2] net: fec: Move `fec_ptp

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Message-ID: <20240812094713.2883476-1-csokas.bence@prolan.hu>
Date: Mon, 12 Aug 2024 11:47:13 +0200
From: Csókás, Bence <csokas.bence@...lan.hu>
To: Jakub Kicinski <kuba@...nel.org>, Csókás Bence
	<csokas.bence@...lan.hu>, <imx@...ts.linux.dev>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
CC: Simon Horman <horms@...nel.org>, Frank Li <Frank.li@....com>, Wei Fang
	<wei.fang@....com>, Shenwei Wang <shenwei.wang@....com>, Clark Wang
	<xiaoning.wang@....com>, "David S. Miller" <davem@...emloft.net>, "Eric
 Dumazet" <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, "Richard
 Cochran" <richardcochran@...il.com>
Subject: [PATCH v3 net-next 1/2] net: fec: Move `fec_ptp_read()` to the top of the file

This function is used in `fec_ptp_enable_pps()` through
struct cyclecounter read(). Moving the declaration makes
it clearer, what's happening.

Fixes: 61d5e2a251fb ("fec: Fix timer capture timing in `fec_ptp_enable_pps()`")
Suggested-by: Frank Li <Frank.li@....com>
Link: https://lore.kernel.org/netdev/20240805144754.2384663-1-csokas.bence@prolan.hu/T/#ma6c21ad264016c24612048b1483769eaff8cdf20
Signed-off-by: Csókás, Bence <csokas.bence@...lan.hu>
---
 drivers/net/ethernet/freescale/fec_ptp.c | 50 ++++++++++++------------
 1 file changed, 25 insertions(+), 25 deletions(-)

diff --git a/drivers/net/ethernet/freescale/fec_ptp.c b/drivers/net/ethernet/freescale/fec_ptp.c
index e32f6724f568..4ed790cb6be4 100644
--- a/drivers/net/ethernet/freescale/fec_ptp.c
+++ b/drivers/net/ethernet/freescale/fec_ptp.c
@@ -90,6 +90,30 @@
 #define FEC_PTP_MAX_NSEC_PERIOD		4000000000ULL
 #define FEC_PTP_MAX_NSEC_COUNTER	0x80000000ULL
 
+/**
+ * fec_ptp_read - read raw cycle counter (to be used by time counter)
+ * @cc: the cyclecounter structure
+ *
+ * this function reads the cyclecounter registers and is called by the
+ * cyclecounter structure used to construct a ns counter from the
+ * arbitrary fixed point registers
+ */
+static u64 fec_ptp_read(const struct cyclecounter *cc)
+{
+	struct fec_enet_private *fep =
+		container_of(cc, struct fec_enet_private, cc);
+	u32 tempval;
+
+	tempval = readl(fep->hwp + FEC_ATIME_CTRL);
+	tempval |= FEC_T_CTRL_CAPTURE;
+	writel(tempval, fep->hwp + FEC_ATIME_CTRL);
+
+	if (fep->quirks & FEC_QUIRK_BUG_CAPTURE)
+		udelay(1);
+
+	return readl(fep->hwp + FEC_ATIME);
+}
+
 /**
  * fec_ptp_enable_pps
  * @fep: the fec_enet_private structure handle
@@ -136,7 +160,7 @@ static int fec_ptp_enable_pps(struct fec_enet_private *fep, uint enable)
 		 * NSEC_PER_SEC - ts.tv_nsec. Add the remaining nanoseconds
 		 * to current timer would be next second.
 		 */
-		tempval = fep->cc.read(&fep->cc);
+		tempval = fec_ptp_read(&fep->cc);
 		/* Convert the ptp local counter to 1588 timestamp */
 		ns = timecounter_cyc2time(&fep->tc, tempval);
 		ts = ns_to_timespec64(ns);
@@ -271,30 +295,6 @@ static enum hrtimer_restart fec_ptp_pps_perout_handler(struct hrtimer *timer)
 	return HRTIMER_NORESTART;
 }
 
-/**
- * fec_ptp_read - read raw cycle counter (to be used by time counter)
- * @cc: the cyclecounter structure
- *
- * this function reads the cyclecounter registers and is called by the
- * cyclecounter structure used to construct a ns counter from the
- * arbitrary fixed point registers
- */
-static u64 fec_ptp_read(const struct cyclecounter *cc)
-{
-	struct fec_enet_private *fep =
-		container_of(cc, struct fec_enet_private, cc);
-	u32 tempval;
-
-	tempval = readl(fep->hwp + FEC_ATIME_CTRL);
-	tempval |= FEC_T_CTRL_CAPTURE;
-	writel(tempval, fep->hwp + FEC_ATIME_CTRL);
-
-	if (fep->quirks & FEC_QUIRK_BUG_CAPTURE)
-		udelay(1);
-
-	return readl(fep->hwp + FEC_ATIME);
-}
-
 /**
  * fec_ptp_start_cyclecounter - create the cycle counter from hw
  * @ndev: network device
-- 
2.34.1