linux-kernel - [net-next PATCH 2/2] net: phy: qcom: qca808x: default to LED active High if not set

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Date: Thu,  1 Feb 2024 14:46:01 +0100
From: Christian Marangi <ansuelsmth@...il.com>
To: Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konrad.dybcio@...aro.org>,
	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>,
	Christian Marangi <ansuelsmth@...il.com>,
	linux-arm-msm@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [net-next PATCH 2/2] net: phy: qcom: qca808x: default to LED active High if not set

qca808x PHY provide support for the led_polarity_set OP to configure
and apply the active-low property but on PHY reset, the Active High bit
is not set resulting in the LED driven as active-low.

To fix this, check if active-low is not set in DT and enable Active High
polarity by default to restore correct funcionality of the LED.

Fixes: 7196062b64ee ("net: phy: at803x: add LED support for qca808x")
Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
---
 drivers/net/phy/qcom/qca808x.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/net/phy/qcom/qca808x.c b/drivers/net/phy/qcom/qca808x.c
index 00db4b274264..d88e04278fc4 100644
--- a/drivers/net/phy/qcom/qca808x.c
+++ b/drivers/net/phy/qcom/qca808x.c
@@ -290,8 +290,18 @@ static int qca808x_probe(struct phy_device *phydev)
 
 static int qca808x_config_init(struct phy_device *phydev)
 {
+	struct qca808x_priv *priv = phydev->priv;
 	int ret;
 
+	/* Default to LED Active High if active-low not in DT */
+	if (priv->led_polarity_mode == -1) {
+		ret = phy_set_bits_mmd(phydev, MDIO_MMD_AN,
+				       QCA808X_MMD7_LED_POLARITY_CTRL,
+				       QCA808X_LED_ACTIVE_HIGH);
+		if (ret)
+			return ret;
+	}
+
 	/* Active adc&vga on 802.3az for the link 1000M and 100M */
 	ret = phy_modify_mmd(phydev, MDIO_MMD_PCS, QCA808X_PHY_MMD3_ADDR_CLD_CTRL7,
 			     QCA808X_8023AZ_AFE_CTRL_MASK, QCA808X_8023AZ_AFE_EN);
-- 
2.43.0