linux-kernel - [PATCH net-next 3/4] net: phy: aquantia: correctly describe LED polarity override

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Message-ID: <2d59088ac85d78b9bf4b54c2de9442e89eacf790.1728145095.git.daniel@makrotopia.org>
Date: Sat, 5 Oct 2024 17:28:13 +0100
From: Daniel Golle <daniel@...rotopia.org>
To: Pavel Machek <pavel@....cz>, Lee Jones <lee@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.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>,
	Xu Liang <lxu@...linear.com>,
	Christian Marangi <ansuelsmth@...il.com>,
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
	Daniel Golle <daniel@...rotopia.org>,
	Robert Marko <robimarko@...il.com>,
	Russell King <rmk+kernel@...linux.org.uk>,
	Abhishek Chauhan <quic_abchauha@...cinc.com>,
	Jacek Anaszewski <jacek.anaszewski@...il.com>,
	linux-leds@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH net-next 3/4] net: phy: aquantia: correctly describe LED
 polarity override

Use newly defined 'active-high' property to set the
VEND1_GLOBAL_LED_DRIVE_VDD bit and let 'active-low' clear that bit. This
reflects the technical reality which was inverted in the previous
description in which the 'active-low' property was used to actually set
the VEND1_GLOBAL_LED_DRIVE_VDD bit, which means that VDD (ie. supply
voltage) of the LED is driven rather than GND.

Signed-off-by: Daniel Golle <daniel@...rotopia.org>
---
 drivers/net/phy/aquantia/aquantia.h      |  1 +
 drivers/net/phy/aquantia/aquantia_leds.c |  6 +++++-
 drivers/net/phy/aquantia/aquantia_main.c | 12 +++++++++---
 3 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/drivers/net/phy/aquantia/aquantia.h b/drivers/net/phy/aquantia/aquantia.h
index 2465345081f8..0c78bfabace5 100644
--- a/drivers/net/phy/aquantia/aquantia.h
+++ b/drivers/net/phy/aquantia/aquantia.h
@@ -177,6 +177,7 @@ static const struct aqr107_hw_stat aqr107_hw_stats[] = {
 struct aqr107_priv {
 	u64 sgmii_stats[AQR107_SGMII_STAT_SZ];
 	unsigned long leds_active_low;
+	unsigned long leds_active_high;
 };
 
 #if IS_REACHABLE(CONFIG_HWMON)
diff --git a/drivers/net/phy/aquantia/aquantia_leds.c b/drivers/net/phy/aquantia/aquantia_leds.c
index 201c8df93fad..21b8ede2a105 100644
--- a/drivers/net/phy/aquantia/aquantia_leds.c
+++ b/drivers/net/phy/aquantia/aquantia_leds.c
@@ -121,7 +121,7 @@ int aqr_phy_led_active_low_set(struct phy_device *phydev, int index, bool enable
 {
 	return phy_modify_mmd(phydev, MDIO_MMD_VEND1, AQR_LED_DRIVE(index),
 			      VEND1_GLOBAL_LED_DRIVE_VDD,
-			      enable ? VEND1_GLOBAL_LED_DRIVE_VDD : 0);
+			      enable ? 0 : VEND1_GLOBAL_LED_DRIVE_VDD);
 }
 
 int aqr_phy_led_polarity_set(struct phy_device *phydev, int index, unsigned long modes)
@@ -138,6 +138,8 @@ int aqr_phy_led_polarity_set(struct phy_device *phydev, int index, unsigned long
 		case PHY_LED_ACTIVE_LOW:
 			active_low = true;
 			break;
+		case PHY_LED_ACTIVE_HIGH:
+			break;
 		default:
 			return -EINVAL;
 		}
@@ -146,6 +148,8 @@ int aqr_phy_led_polarity_set(struct phy_device *phydev, int index, unsigned long
 	/* Save LED driver vdd state to restore on SW reset */
 	if (active_low)
 		priv->leds_active_low |= BIT(index);
+	else
+		priv->leds_active_high |= BIT(index);
 
 	return aqr_phy_led_active_low_set(phydev, index, active_low);
 }
diff --git a/drivers/net/phy/aquantia/aquantia_main.c b/drivers/net/phy/aquantia/aquantia_main.c
index c33a5ef34ba0..c7381d5ede37 100644
--- a/drivers/net/phy/aquantia/aquantia_main.c
+++ b/drivers/net/phy/aquantia/aquantia_main.c
@@ -488,7 +488,7 @@ static void aqr107_chip_info(struct phy_device *phydev)
 static int aqr107_config_init(struct phy_device *phydev)
 {
 	struct aqr107_priv *priv = phydev->priv;
-	u32 led_active_low;
+	u32 led_idx;
 	int ret;
 
 	/* Check that the PHY interface type is compatible */
@@ -515,8 +515,14 @@ static int aqr107_config_init(struct phy_device *phydev)
 		return ret;
 
 	/* Restore LED polarity state after reset */
-	for_each_set_bit(led_active_low, &priv->leds_active_low, AQR_MAX_LEDS) {
-		ret = aqr_phy_led_active_low_set(phydev, led_active_low, true);
+	for_each_set_bit(led_idx, &priv->leds_active_low, AQR_MAX_LEDS) {
+		ret = aqr_phy_led_active_low_set(phydev, led_idx, true);
+		if (ret)
+			return ret;
+	}
+
+	for_each_set_bit(led_idx, &priv->leds_active_high, AQR_MAX_LEDS) {
+		ret = aqr_phy_led_active_low_set(phydev, led_idx, false);
 		if (ret)
 			return ret;
 	}
-- 
2.46.2