From:   Christian Marangi <ansuelsmth@gmail.com>
To:     Andrew Lunn <andrew@lunn.ch>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Vladimir Oltean <olteanv@gmail.com>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Heiner Kallweit <hkallweit1@gmail.com>,
        Russell King <linux@armlinux.org.uk>,
        Gregory Clement <gregory.clement@bootlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
        Andy Gross <agross@kernel.org>,
        Bjorn Andersson <andersson@kernel.org>,
        Konrad Dybcio <konrad.dybcio@linaro.org>,
        Christian Marangi <ansuelsmth@gmail.com>,
        John Crispin <john@phrozen.org>, netdev@vger.kernel.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        linux-arm-msm@vger.kernel.org, Lee Jones <lee@kernel.org>,
        linux-leds@vger.kernel.org
Subject: [net-next PATCH v4 06/14] net: phy: marvell: Add software control of the LEDs
Date:   Fri, 17 Mar 2023 03:31:17 +0100
Message-Id: <20230317023125.486-7-ansuelsmth@gmail.com>
In-Reply-To: <20230317023125.486-1-ansuelsmth@gmail.com>
References: <20230317023125.486-1-ansuelsmth@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

From: Andrew Lunn <andrew@lunn.ch>

Add a brightness function, so the LEDs can be controlled from
software using the standard Linux LED infrastructure.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
---
 drivers/net/phy/marvell.c | 45 ++++++++++++++++++++++++++++++++++-----
 1 file changed, 40 insertions(+), 5 deletions(-)

diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
index 0d706ee266af..cadf9da13b82 100644
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -144,11 +144,13 @@
 /* WOL Event Interrupt Enable */
 #define MII_88E1318S_PHY_CSIER_WOL_EIE			BIT(7)
 
-/* LED Timer Control Register */
-#define MII_88E1318S_PHY_LED_TCR			0x12
-#define MII_88E1318S_PHY_LED_TCR_FORCE_INT		BIT(15)
-#define MII_88E1318S_PHY_LED_TCR_INTn_ENABLE		BIT(7)
-#define MII_88E1318S_PHY_LED_TCR_INT_ACTIVE_LOW		BIT(11)
+#define MII_88E1318S_PHY_LED_FUNC		0x10
+#define MII_88E1318S_PHY_LED_FUNC_OFF		(0x8)
+#define MII_88E1318S_PHY_LED_FUNC_ON		(0x9)
+#define MII_88E1318S_PHY_LED_TCR		0x12
+#define MII_88E1318S_PHY_LED_TCR_FORCE_INT	BIT(15)
+#define MII_88E1318S_PHY_LED_TCR_INTn_ENABLE	BIT(7)
+#define MII_88E1318S_PHY_LED_TCR_INT_ACTIVE_LOW	BIT(11)
 
 /* Magic Packet MAC address registers */
 #define MII_88E1318S_PHY_MAGIC_PACKET_WORD2		0x17
@@ -2832,6 +2834,34 @@ static int marvell_hwmon_probe(struct phy_device *phydev)
 }
 #endif
 
+static int m88e1318_led_brightness_set(struct phy_device *phydev,
+				       u32 index, enum led_brightness value)
+{
+	int reg;
+
+	reg = phy_read_paged(phydev, MII_MARVELL_LED_PAGE,
+			     MII_88E1318S_PHY_LED_FUNC);
+	if (reg < 0)
+		return reg;
+
+	switch (index) {
+	case 0:
+	case 1:
+	case 2:
+		reg &= ~(0xf << (4 * index));
+		if (value == LED_OFF)
+			reg |= MII_88E1318S_PHY_LED_FUNC_OFF << (4 * index);
+		else
+			reg |= MII_88E1318S_PHY_LED_FUNC_ON << (4 * index);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return phy_write_paged(phydev, MII_MARVELL_LED_PAGE,
+			       MII_88E1318S_PHY_LED_FUNC, reg);
+}
+
 static int marvell_probe(struct phy_device *phydev)
 {
 	struct marvell_priv *priv;
@@ -3081,6 +3111,7 @@ static struct phy_driver marvell_drivers[] = {
 		.get_sset_count = marvell_get_sset_count,
 		.get_strings = marvell_get_strings,
 		.get_stats = marvell_get_stats,
+		.led_brightness_set = m88e1318_led_brightness_set,
 	},
 	{
 		.phy_id = MARVELL_PHY_ID_88E1145,
@@ -3187,6 +3218,7 @@ static struct phy_driver marvell_drivers[] = {
 		.cable_test_start = marvell_vct7_cable_test_start,
 		.cable_test_tdr_start = marvell_vct5_cable_test_tdr_start,
 		.cable_test_get_status = marvell_vct7_cable_test_get_status,
+		.led_brightness_set = m88e1318_led_brightness_set,
 	},
 	{
 		.phy_id = MARVELL_PHY_ID_88E1540,
@@ -3213,6 +3245,7 @@ static struct phy_driver marvell_drivers[] = {
 		.cable_test_start = marvell_vct7_cable_test_start,
 		.cable_test_tdr_start = marvell_vct5_cable_test_tdr_start,
 		.cable_test_get_status = marvell_vct7_cable_test_get_status,
+		.led_brightness_set = m88e1318_led_brightness_set,
 	},
 	{
 		.phy_id = MARVELL_PHY_ID_88E1545,
@@ -3239,6 +3272,7 @@ static struct phy_driver marvell_drivers[] = {
 		.cable_test_start = marvell_vct7_cable_test_start,
 		.cable_test_tdr_start = marvell_vct5_cable_test_tdr_start,
 		.cable_test_get_status = marvell_vct7_cable_test_get_status,
+		.led_brightness_set = m88e1318_led_brightness_set,
 	},
 	{
 		.phy_id = MARVELL_PHY_ID_88E3016,
@@ -3380,6 +3414,7 @@ static struct phy_driver marvell_drivers[] = {
 		.get_stats = marvell_get_stats,
 		.get_tunable = m88e1540_get_tunable,
 		.set_tunable = m88e1540_set_tunable,
+		.led_brightness_set = m88e1318_led_brightness_set,
 	},
 };
 
-- 
2.39.2