[PATCH net-next v2 3/5] net: phy: aquantia: correctly describe LED polarity override

[Daniel Golle]

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@xxxxxxxxxxxxxx>
---
v2: use dedicated bools force_active_high and force_active_low to make
    aqr_phy_led_polarity_set() more robust

 drivers/net/phy/aquantia/aquantia.h      |  1 +
 drivers/net/phy/aquantia/aquantia_leds.c | 19 ++++++++++++++-----
 drivers/net/phy/aquantia/aquantia_main.c | 12 +++++++++---
 3 files changed, 24 insertions(+), 8 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..2bafd6c78b00 100644
--- a/drivers/net/phy/aquantia/aquantia_leds.c
+++ b/drivers/net/phy/aquantia/aquantia_leds.c
@@ -121,13 +121,13 @@ 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)
 {
+	bool force_active_low = false, force_active_high = false;
 	struct aqr107_priv *priv = phydev->priv;
-	bool active_low = false;
 	u32 mode;
 
 	if (index >= AQR_MAX_LEDS)
@@ -136,7 +136,10 @@ int aqr_phy_led_polarity_set(struct phy_device *phydev, int index, unsigned long
 	for_each_set_bit(mode, &modes, __PHY_LED_MODES_NUM) {
 		switch (mode) {
 		case PHY_LED_ACTIVE_LOW:
-			active_low = true;
+			force_active_low = true;
+			break;
+		case PHY_LED_ACTIVE_HIGH:
+			force_active_high = true;
 			break;
 		default:
 			return -EINVAL;
@@ -144,8 +147,14 @@ 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)
+	if (force_active_low)
 		priv->leds_active_low |= BIT(index);
 
-	return aqr_phy_led_active_low_set(phydev, index, active_low);
+	if (force_active_high)
+		priv->leds_active_high |= BIT(index);
+
+	if (force_active_high || force_active_low)
+		return aqr_phy_led_active_low_set(phydev, index, force_active_low);
+
+	unreachable();
 }
diff --git a/drivers/net/phy/aquantia/aquantia_main.c b/drivers/net/phy/aquantia/aquantia_main.c
index dcad3fa1ddc3..c62fc65ddbdb 100644
--- a/drivers/net/phy/aquantia/aquantia_main.c
+++ b/drivers/net/phy/aquantia/aquantia_main.c
@@ -517,7 +517,7 @@ static int aqr107_config_mdi(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 */
@@ -548,8 +548,14 @@ 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;
 	}
-- 
2.47.0