netdev - [RFC PATCH net-next 2/3] net: phy: bcm54140: use phy_package

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Message-Id: <20200420232624.9127-2-michael@walle.cc>
Date:   Tue, 21 Apr 2020 01:26:23 +0200
From:   Michael Walle <michael@...le.cc>
To:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Cc:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S . Miller" <davem@...emloft.net>,
        Vladimir Oltean <vladimir.oltean@....com>,
        Michael Walle <michael@...le.cc>
Subject: [RFC PATCH net-next 2/3] net: phy: bcm54140: use phy_package_shared

Use the new phy_package_shared common storage to ease the package
initialization and to access the global registers.

Signed-off-by: Michael Walle <michael@...le.cc>
---
 drivers/net/phy/bcm54140.c | 57 ++++++++------------------------------
 1 file changed, 11 insertions(+), 46 deletions(-)

diff --git a/drivers/net/phy/bcm54140.c b/drivers/net/phy/bcm54140.c
index aa854477e06a..97b9e1c763da 100644
--- a/drivers/net/phy/bcm54140.c
+++ b/drivers/net/phy/bcm54140.c
@@ -122,7 +122,6 @@ struct bcm54140_priv {
 	int port;
 	int base_addr;
 #if IS_ENABLED(CONFIG_HWMON)
-	bool pkg_init;
 	/* protect the alarm bits */
 	struct mutex alarm_lock;
 	u16 alarm;
@@ -395,36 +394,6 @@ static int bcm54140_enable_monitoring(struct phy_device *phydev)
 	return bcm_phy_modify_rdb(phydev, BCM54140_RDB_MON_CTRL, mask, set);
 }
 
-/* Check if one PHY has already done the init of the parts common to all PHYs
- * in the Quad PHY package.
- */
-static bool bcm54140_is_pkg_init(struct phy_device *phydev)
-{
-	struct bcm54140_priv *priv = phydev->priv;
-	struct mii_bus *bus = phydev->mdio.bus;
-	int base_addr = priv->base_addr;
-	struct phy_device *phy;
-	int i;
-
-	/* Quad PHY */
-	for (i = 0; i < 4; i++) {
-		phy = mdiobus_get_phy(bus, base_addr + i);
-		if (!phy)
-			continue;
-
-		if ((phy->phy_id & phydev->drv->phy_id_mask) !=
-		    (phydev->drv->phy_id & phydev->drv->phy_id_mask))
-			continue;
-
-		priv = phy->priv;
-
-		if (priv && priv->pkg_init)
-			return true;
-	}
-
-	return false;
-}
-
 static int bcm54140_probe_once(struct phy_device *phydev)
 {
 	struct device *hwmon;
@@ -445,38 +414,34 @@ static int bcm54140_probe_once(struct phy_device *phydev)
 
 static int bcm54140_base_read_rdb(struct phy_device *phydev, u16 rdb)
 {
-	struct bcm54140_priv *priv = phydev->priv;
-	struct mii_bus *bus = phydev->mdio.bus;
 	int ret;
 
-	mutex_lock(&bus->mdio_lock);
-	ret = __mdiobus_write(bus, priv->base_addr, MII_BCM54XX_RDB_ADDR, rdb);
+	phy_lock_mdio_bus(phydev);
+	ret = __phy_package_write(phydev, MII_BCM54XX_RDB_ADDR, rdb);
 	if (ret < 0)
 		goto out;
 
-	ret = __mdiobus_read(bus, priv->base_addr, MII_BCM54XX_RDB_DATA);
+	ret = __phy_package_read(phydev, MII_BCM54XX_RDB_DATA);
 
 out:
-	mutex_unlock(&bus->mdio_lock);
+	phy_unlock_mdio_bus(phydev);
 	return ret;
 }
 
 static int bcm54140_base_write_rdb(struct phy_device *phydev,
 				   u16 rdb, u16 val)
 {
-	struct bcm54140_priv *priv = phydev->priv;
-	struct mii_bus *bus = phydev->mdio.bus;
 	int ret;
 
-	mutex_lock(&bus->mdio_lock);
-	ret = __mdiobus_write(bus, priv->base_addr, MII_BCM54XX_RDB_ADDR, rdb);
+	phy_lock_mdio_bus(phydev);
+	ret = __phy_package_write(phydev, MII_BCM54XX_RDB_ADDR, rdb);
 	if (ret < 0)
 		goto out;
 
-	ret = __mdiobus_write(bus, priv->base_addr, MII_BCM54XX_RDB_DATA, val);
+	ret = __phy_package_write(phydev, MII_BCM54XX_RDB_DATA, val);
 
 out:
-	mutex_unlock(&bus->mdio_lock);
+	phy_unlock_mdio_bus(phydev);
 	return ret;
 }
 
@@ -606,16 +571,16 @@ static int bcm54140_probe(struct phy_device *phydev)
 	if (ret)
 		return ret;
 
+	devm_phy_package_join(&phydev->mdio.dev, phydev, priv->base_addr);
+
 #if IS_ENABLED(CONFIG_HWMON)
 	mutex_init(&priv->alarm_lock);
 
-	if (!bcm54140_is_pkg_init(phydev)) {
+	if (phy_package_init_once(phydev)) {
 		ret = bcm54140_probe_once(phydev);
 		if (ret)
 			return ret;
 	}
-
-	priv->pkg_init = true;
 #endif
 
 	phydev_dbg(phydev, "probed (port %d, base PHY address %d)\n",
-- 
2.20.1