netdev - [net-next PATCH 11/14] net: phy: at803x: make specific status mask more generic

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Date: Wed, 29 Nov 2023 03:12:16 +0100
From: Christian Marangi <ansuelsmth@...il.com>
To: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Andy Gross <agross@...nel.org>,
	Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konrad.dybcio@...aro.org>,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-arm-msm@...r.kernel.org
Cc: Christian Marangi <ansuelsmth@...il.com>
Subject: [net-next PATCH 11/14] net: phy: at803x: make specific status mask more generic

Rework specific status masks to be more generic and drop checking
PHY ID in read_specific_status.

The function now takes an additional arg where the speed mask is passed
and then extracted from the AT803X_SPECIFIC_STATUS reg.

Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
---
 drivers/net/phy/at803x.c | 26 ++++++++++++++++++--------
 1 file changed, 18 insertions(+), 8 deletions(-)

diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
index 32f44ef9835b..c6aa31495324 100644
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -301,6 +301,11 @@ static struct at803x_hw_stat qca83xx_hw_stats[] = {
 	{ "eee_wake_errors", 0x16, GENMASK(15, 0), MMD},
 };
 
+struct at803x_ss_mask {
+	u16 speed_mask;
+	u8 speed_shift;
+};
+
 struct qca83xx_priv {
 	u64 stats[ARRAY_SIZE(qca83xx_hw_stats)];
 };
@@ -900,7 +905,8 @@ static void at803x_link_change_notify(struct phy_device *phydev)
 	}
 }
 
-static int at803x_read_specific_status(struct phy_device *phydev)
+static int at803x_read_specific_status(struct phy_device *phydev,
+				       struct at803x_ss_mask ss_mask)
 {
 	int ss;
 
@@ -919,11 +925,8 @@ static int at803x_read_specific_status(struct phy_device *phydev)
 		if (sfc < 0)
 			return sfc;
 
-		/* qca8081 takes the different bits for speed value from at803x */
-		if (phydev->drv->phy_id == QCA8081_PHY_ID)
-			speed = FIELD_GET(QCA808X_SS_SPEED_MASK, ss);
-		else
-			speed = FIELD_GET(AT803X_SS_SPEED_MASK, ss);
+		speed = ss & ss_mask.speed_mask;
+		speed >>= ss_mask.speed_shift;
 
 		switch (speed) {
 		case AT803X_SS_SPEED_10:
@@ -967,6 +970,7 @@ static int at803x_read_specific_status(struct phy_device *phydev)
 
 static int at803x_read_status(struct phy_device *phydev)
 {
+	struct at803x_ss_mask ss_mask = { 0 };
 	int err, old_link = phydev->link;
 
 	/* Update the link, but return if there was an error */
@@ -987,7 +991,9 @@ static int at803x_read_status(struct phy_device *phydev)
 	if (err < 0)
 		return err;
 
-	err = at803x_read_specific_status(phydev);
+	ss_mask.speed_mask = AT803X_SS_SPEED_MASK;
+	ss_mask.speed_shift = __bf_shf(AT803X_SS_SPEED_MASK);
+	err = at803x_read_specific_status(phydev, ss_mask);
 	if (err < 0)
 		return err;
 
@@ -1960,6 +1966,7 @@ static int qca808x_config_init(struct phy_device *phydev)
 
 static int qca808x_read_status(struct phy_device *phydev)
 {
+	struct at803x_ss_mask ss_mask = { 0 };
 	int ret;
 
 	ret = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_10GBT_STAT);
@@ -1973,7 +1980,10 @@ static int qca808x_read_status(struct phy_device *phydev)
 	if (ret)
 		return ret;
 
-	ret = at803x_read_specific_status(phydev);
+	/* qca8081 takes the different bits for speed value from at803x */
+	ss_mask.speed_mask = QCA808X_SS_SPEED_MASK;
+	ss_mask.speed_shift = __bf_shf(QCA808X_SS_SPEED_MASK);
+	ret = at803x_read_specific_status(phydev, ss_mask);
 	if (ret < 0)
 		return ret;
 
-- 
2.40.1