netdev - [PATCH net-next v2 2/3] net: phy: broadcom: Remove unused flags

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Date:   Fri, 12 Feb 2021 19:46:31 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     netdev@...r.kernel.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Michael Chan <mchan@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com (open list:BROADCOM ETHERNET PHY
        DRIVERS), linux-kernel@...r.kernel.org (open list),
        olteanv@...il.com, michael@...le.cc
Subject: [PATCH net-next v2 2/3] net: phy: broadcom: Remove unused flags

We have a number of unused flags defined today and since we are scarce
on space and may need to introduce new flags in the future remove and
shift every existing flag down into a contiguous assignment.
PHY_BCM_FLAGS_MODE_1000BX was only used internally for the BCM54616S
PHY, so we allocate a driver private structure instead to store that
flag instead of canibalizing one from phydev->dev_flags for that
purpose.

Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 drivers/net/phy/broadcom.c | 19 ++++++++++++++++---
 include/linux/brcmphy.h    | 21 ++++++++-------------
 2 files changed, 24 insertions(+), 16 deletions(-)

diff --git a/drivers/net/phy/broadcom.c b/drivers/net/phy/broadcom.c
index 4142f69c1530..3ce266ab521b 100644
--- a/drivers/net/phy/broadcom.c
+++ b/drivers/net/phy/broadcom.c
@@ -381,10 +381,21 @@ static int bcm5481_config_aneg(struct phy_device *phydev)
 	return ret;
 }
 
+struct bcm54616s_phy_priv {
+	bool mode_1000bx_en;
+};
+
 static int bcm54616s_probe(struct phy_device *phydev)
 {
+	struct bcm54616s_phy_priv *priv;
 	int val, intf_sel;
 
+	priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	phydev->priv = priv;
+
 	val = bcm_phy_read_shadow(phydev, BCM54XX_SHD_MODE);
 	if (val < 0)
 		return val;
@@ -407,7 +418,7 @@ static int bcm54616s_probe(struct phy_device *phydev)
 		 * 1000BASE-X configuration.
 		 */
 		if (!(val & BCM54616S_100FX_MODE))
-			phydev->dev_flags |= PHY_BCM_FLAGS_MODE_1000BX;
+			priv->mode_1000bx_en = true;
 
 		phydev->port = PORT_FIBRE;
 	}
@@ -417,10 +428,11 @@ static int bcm54616s_probe(struct phy_device *phydev)
 
 static int bcm54616s_config_aneg(struct phy_device *phydev)
 {
+	struct bcm54616s_phy_priv *priv = phydev->priv;
 	int ret;
 
 	/* Aneg firstly. */
-	if (phydev->dev_flags & PHY_BCM_FLAGS_MODE_1000BX)
+	if (priv->mode_1000bx_en)
 		ret = genphy_c37_config_aneg(phydev);
 	else
 		ret = genphy_config_aneg(phydev);
@@ -433,9 +445,10 @@ static int bcm54616s_config_aneg(struct phy_device *phydev)
 
 static int bcm54616s_read_status(struct phy_device *phydev)
 {
+	struct bcm54616s_phy_priv *priv = phydev->priv;
 	int err;
 
-	if (phydev->dev_flags & PHY_BCM_FLAGS_MODE_1000BX)
+	if (priv->mode_1000bx_en)
 		err = genphy_c37_read_status(phydev);
 	else
 		err = genphy_read_status(phydev);
diff --git a/include/linux/brcmphy.h b/include/linux/brcmphy.h
index de9430d55c90..844dcfe789a2 100644
--- a/include/linux/brcmphy.h
+++ b/include/linux/brcmphy.h
@@ -61,19 +61,14 @@
 #define PHY_BCM_OUI_5			0x03625e00
 #define PHY_BCM_OUI_6			0xae025000
 
-#define PHY_BCM_FLAGS_MODE_COPPER	0x00000001
-#define PHY_BCM_FLAGS_MODE_1000BX	0x00000002
-#define PHY_BCM_FLAGS_INTF_SGMII	0x00000010
-#define PHY_BCM_FLAGS_INTF_XAUI		0x00000020
-#define PHY_BRCM_WIRESPEED_ENABLE	0x00000100
-#define PHY_BRCM_AUTO_PWRDWN_ENABLE	0x00000200
-#define PHY_BRCM_RX_REFCLK_UNUSED	0x00000400
-#define PHY_BRCM_STD_IBND_DISABLE	0x00000800
-#define PHY_BRCM_EXT_IBND_RX_ENABLE	0x00001000
-#define PHY_BRCM_EXT_IBND_TX_ENABLE	0x00002000
-#define PHY_BRCM_CLEAR_RGMII_MODE	0x00004000
-#define PHY_BRCM_DIS_TXCRXC_NOENRGY	0x00008000
-#define PHY_BRCM_EN_MASTER_MODE		0x00010000
+#define PHY_BRCM_AUTO_PWRDWN_ENABLE	0x00000001
+#define PHY_BRCM_RX_REFCLK_UNUSED	0x00000002
+#define PHY_BRCM_STD_IBND_DISABLE	0x00000004
+#define PHY_BRCM_EXT_IBND_RX_ENABLE	0x00000008
+#define PHY_BRCM_EXT_IBND_TX_ENABLE	0x00000010
+#define PHY_BRCM_CLEAR_RGMII_MODE	0x00000020
+#define PHY_BRCM_DIS_TXCRXC_NOENRGY	0x00000040
+#define PHY_BRCM_EN_MASTER_MODE		0x00000080
 
 /* Broadcom BCM7xxx specific workarounds */
 #define PHY_BRCM_7XXX_REV(x)		(((x) >> 8) & 0xff)
-- 
2.25.1