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* [PATCH 1/2] net: phy: realtek: Add support for PHY LEDs on RTL8211E
@ 2025-03-12 19:36 Michael Klein
  2025-03-12 19:36 ` [PATCH 2/2] ARM: dts: bananapi: add support for PHY LEDs Michael Klein
  2025-03-13 16:45 ` [PATCH 1/2] net: phy: realtek: Add support for PHY LEDs on RTL8211E Andrew Lunn
  0 siblings, 2 replies; 10+ messages in thread
From: Michael Klein @ 2025-03-12 19:36 UTC (permalink / raw)
  To: Andrew Lunn, Heiner Kallweit, Russell King, David S. Miller,
	Eric Dumazet, Jakub Kicinski, Paolo Abeni
  Cc: Michael Klein, netdev, linux-kernel

Like the RTL8211F, the RTL8211E PHY supports up to three LEDs.
Add netdev trigger support for them, too.

Signed-off-by: Michael Klein <michael@fossekall.de>
---
 drivers/net/phy/realtek.c | 120 ++++++++++++++++++++++++++++++++++++--
 1 file changed, 114 insertions(+), 6 deletions(-)

diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
index 166f6a728373..906640d6dca5 100644
--- a/drivers/net/phy/realtek.c
+++ b/drivers/net/phy/realtek.c
@@ -52,6 +52,18 @@
 #define RTL8211E_TX_DELAY			BIT(12)
 #define RTL8211E_RX_DELAY			BIT(11)
 
+#define RTL8211E_LEDCR1				0x1a
+#define RTL8211E_LEDCR1_ACT_TXRX		BIT(4)
+#define RTL8211E_LEDCR1_MASK			BIT(4)
+#define RTL8211E_LEDCR1_SHIFT			1
+
+#define RTL8211E_LEDCR2				0x1c
+#define RTL8211E_LEDCR2_LINK_1000		BIT(2)
+#define RTL8211E_LEDCR2_LINK_100		BIT(1)
+#define RTL8211E_LEDCR2_LINK_10			BIT(0)
+#define RTL8211E_LEDCR2_MASK			GENMASK(2, 0)
+#define RTL8211E_LEDCR2_SHIFT			4
+
 #define RTL8211F_CLKOUT_EN			BIT(0)
 
 #define RTL8201F_ISR				0x1e
@@ -96,7 +108,8 @@
 #define RTL_8221B_VN_CG				0x001cc84a
 #define RTL_8251B				0x001cc862
 
-#define RTL8211F_LED_COUNT			3
+/* RTL8211E and RTL8211F support up to three LEDs */
+#define RTL8211x_LED_COUNT			3
 
 MODULE_DESCRIPTION("Realtek PHY driver");
 MODULE_AUTHOR("Johnson Leung");
@@ -487,7 +500,7 @@ static int rtl821x_resume(struct phy_device *phydev)
 	return 0;
 }
 
-static int rtl8211f_led_hw_is_supported(struct phy_device *phydev, u8 index,
+static int rtl8211x_led_hw_is_supported(struct phy_device *phydev, u8 index,
 					unsigned long rules)
 {
 	const unsigned long mask = BIT(TRIGGER_NETDEV_LINK_10) |
@@ -506,9 +519,11 @@ static int rtl8211f_led_hw_is_supported(struct phy_device *phydev, u8 index,
 	 *      rates and Active indication always at all three 10+100+1000
 	 *      link rates.
 	 * This code currently uses mode B only.
+	 *
+	 * RTL8211E PHY LED has one mode, which works like RTL8211F * mode B.
 	 */
 
-	if (index >= RTL8211F_LED_COUNT)
+	if (index >= RTL8211x_LED_COUNT)
 		return -EINVAL;
 
 	/* Filter out any other unsupported triggers. */
@@ -527,7 +542,7 @@ static int rtl8211f_led_hw_control_get(struct phy_device *phydev, u8 index,
 {
 	int val;
 
-	if (index >= RTL8211F_LED_COUNT)
+	if (index >= RTL8211x_LED_COUNT)
 		return -EINVAL;
 
 	val = phy_read_paged(phydev, 0xd04, RTL8211F_LEDCR);
@@ -560,7 +575,7 @@ static int rtl8211f_led_hw_control_set(struct phy_device *phydev, u8 index,
 	const u16 mask = RTL8211F_LEDCR_MASK << (RTL8211F_LEDCR_SHIFT * index);
 	u16 reg = 0;
 
-	if (index >= RTL8211F_LED_COUNT)
+	if (index >= RTL8211x_LED_COUNT)
 		return -EINVAL;
 
 	if (test_bit(TRIGGER_NETDEV_LINK_10, &rules))
@@ -583,6 +598,96 @@ static int rtl8211f_led_hw_control_set(struct phy_device *phydev, u8 index,
 	return phy_modify_paged(phydev, 0xd04, RTL8211F_LEDCR, mask, reg);
 }
 
+static int rtl8211e_led_hw_control_get(struct phy_device *phydev, u8 index,
+				       unsigned long *rules)
+{
+	int oldpage, ret;
+	u16 cr1, cr2;
+
+	if (index >= RTL8211x_LED_COUNT)
+		return -EINVAL;
+
+	oldpage = phy_select_page(phydev, 0x7);
+	if (oldpage < 0)
+		goto err_restore_page;
+
+	ret = __phy_write(phydev, RTL821x_EXT_PAGE_SELECT, 0x2c);
+	if (ret)
+		goto err_restore_page;
+
+	cr1 = ret = __phy_read(phydev, RTL8211E_LEDCR1);
+	if (ret < 0)
+		goto err_restore_page;
+
+	cr1 >>= RTL8211E_LEDCR1_SHIFT * index;
+	if (cr1 & RTL8211E_LEDCR1_ACT_TXRX) {
+		set_bit(TRIGGER_NETDEV_RX, rules);
+		set_bit(TRIGGER_NETDEV_TX, rules);
+	}
+
+	cr2 = ret = __phy_read(phydev, RTL8211E_LEDCR2);
+	if (ret < 0)
+		goto err_restore_page;
+
+	cr2 >>= RTL8211E_LEDCR2_SHIFT * index;
+	if (cr2 & RTL8211E_LEDCR2_LINK_10)
+		set_bit(TRIGGER_NETDEV_LINK_10, rules);
+
+	if (cr2 & RTL8211E_LEDCR2_LINK_100)
+		set_bit(TRIGGER_NETDEV_LINK_100, rules);
+
+	if (cr2 & RTL8211E_LEDCR2_LINK_1000)
+		set_bit(TRIGGER_NETDEV_LINK_1000, rules);
+
+err_restore_page:
+	return phy_restore_page(phydev, oldpage, ret);
+}
+
+static int rtl8211e_led_hw_control_set(struct phy_device *phydev, u8 index,
+				       unsigned long rules)
+{
+	const u16 cr1mask = RTL8211E_LEDCR1_MASK << (RTL8211E_LEDCR1_SHIFT * index);
+	const u16 cr2mask = RTL8211E_LEDCR2_MASK << (RTL8211E_LEDCR2_SHIFT * index);
+	u16 cr1 = 0, cr2 = 0;
+	int oldpage, ret;
+
+	if (index >= RTL8211x_LED_COUNT)
+		return -EINVAL;
+
+	oldpage = phy_select_page(phydev, 0x7);
+	if (oldpage < 0)
+		goto err_restore_page;
+
+	ret = __phy_write(phydev, RTL821x_EXT_PAGE_SELECT, 0x2c);
+	if (ret)
+		goto err_restore_page;
+
+	if (test_bit(TRIGGER_NETDEV_RX, &rules) ||
+	    test_bit(TRIGGER_NETDEV_TX, &rules)) {
+		cr1 |= RTL8211E_LEDCR1_ACT_TXRX;
+	}
+
+	cr1 <<= RTL8211E_LEDCR1_SHIFT * index;
+	ret = __phy_modify(phydev, RTL8211E_LEDCR1, cr1mask, cr1);
+	if (ret < 0)
+		goto err_restore_page;
+
+	if (test_bit(TRIGGER_NETDEV_LINK_10, &rules))
+		cr2 |= RTL8211E_LEDCR2_LINK_10;
+
+	if (test_bit(TRIGGER_NETDEV_LINK_100, &rules))
+		cr2 |= RTL8211E_LEDCR2_LINK_100;
+
+	if (test_bit(TRIGGER_NETDEV_LINK_1000, &rules))
+		cr2 |= RTL8211E_LEDCR2_LINK_1000;
+
+	cr2 <<= RTL8211E_LEDCR2_SHIFT * index;
+	ret = __phy_modify(phydev, RTL8211E_LEDCR2, cr2mask, cr2);
+
+err_restore_page:
+	return phy_restore_page(phydev, oldpage, ret);
+}
+
 static int rtl8211e_config_init(struct phy_device *phydev)
 {
 	int ret = 0, oldpage;
@@ -1296,6 +1401,9 @@ static struct phy_driver realtek_drvs[] = {
 		.resume		= genphy_resume,
 		.read_page	= rtl821x_read_page,
 		.write_page	= rtl821x_write_page,
+		.led_hw_is_supported = rtl8211x_led_hw_is_supported,
+		.led_hw_control_get = rtl8211e_led_hw_control_get,
+		.led_hw_control_set = rtl8211e_led_hw_control_set,
 	}, {
 		PHY_ID_MATCH_EXACT(0x001cc916),
 		.name		= "RTL8211F Gigabit Ethernet",
@@ -1309,7 +1417,7 @@ static struct phy_driver realtek_drvs[] = {
 		.read_page	= rtl821x_read_page,
 		.write_page	= rtl821x_write_page,
 		.flags		= PHY_ALWAYS_CALL_SUSPEND,
-		.led_hw_is_supported = rtl8211f_led_hw_is_supported,
+		.led_hw_is_supported = rtl8211x_led_hw_is_supported,
 		.led_hw_control_get = rtl8211f_led_hw_control_get,
 		.led_hw_control_set = rtl8211f_led_hw_control_set,
 	}, {
-- 
2.39.5


^ permalink raw reply	[flat|nested] 10+ messages in thread
end of thread, other threads:[~2025-03-13 19:40 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2025-03-12 19:36 [PATCH 1/2] net: phy: realtek: Add support for PHY LEDs on RTL8211E Michael Klein
2025-03-12 19:36 ` [PATCH 2/2] ARM: dts: bananapi: add support for PHY LEDs Michael Klein
2025-03-13  6:07   ` Jernej Škrabec
2025-03-13  8:34     ` Michael Klein
2025-03-13 10:40       ` Andre Przywara
2025-03-13 13:17         ` Andrew Lunn
2025-03-13 16:20           ` Michael Klein
2025-03-13 16:45 ` [PATCH 1/2] net: phy: realtek: Add support for PHY LEDs on RTL8211E Andrew Lunn
2025-03-13 18:54   ` Michael Klein
2025-03-13 19:39     ` Andrew Lunn

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