[net-next v5 0/4] net: phy: realtek: Add support for PHY LEDs on

[net-next v5 0/4] net: phy: realtek: Add support for PHY LEDs on

[Michael Klein]

Changes in V5:
- Split cleanup patch and improve code formatting

Changes in V4:
- Change (!ret) to (ret == 0)
- Replace set_bit() by __set_bit()

Changes in V3:
- move definition of rtl8211e_read_ext_page() to patch 2
- Wrap overlong lines

Changes in V2:
- Designate to net-next
- Add ExtPage access cleanup patch as suggested by Andrew Lunn

Michael Klein (4):
  net: phy: realtek: Group RTL82* macro definitions
  net: phy: realtek: Clean up RTL8211E ExtPage access
  net: phy: realtek: use __set_bit() in rtl8211f_led_hw_control_get()
  net: phy: realtek: Add support for PHY LEDs on RTL8211E

 drivers/net/phy/realtek/realtek_main.c | 201 ++++++++++++++++++++-----
 1 file changed, 160 insertions(+), 41 deletions(-)

-- 
2.39.5

[net-next v5 1/4] net: phy: realtek: Group RTL82* macro definitions

[Michael Klein]

Group macro definitions by chip number in lexicographic order.

Signed-off-by: Michael Klein <michael@fossekall.de>
---
 drivers/net/phy/realtek/realtek_main.c | 30 +++++++++++++-------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/drivers/net/phy/realtek/realtek_main.c b/drivers/net/phy/realtek/realtek_main.c
index 893c82479671..b27c0f995e56 100644
--- a/drivers/net/phy/realtek/realtek_main.c
+++ b/drivers/net/phy/realtek/realtek_main.c
@@ -17,6 +17,15 @@
 
 #include "realtek.h"
 
+#define RTL8201F_ISR				0x1e
+#define RTL8201F_ISR_ANERR			BIT(15)
+#define RTL8201F_ISR_DUPLEX			BIT(13)
+#define RTL8201F_ISR_LINK			BIT(11)
+#define RTL8201F_ISR_MASK			(RTL8201F_ISR_ANERR | \
+						 RTL8201F_ISR_DUPLEX | \
+						 RTL8201F_ISR_LINK)
+#define RTL8201F_IER				0x13
+
 #define RTL821x_PHYSR				0x11
 #define RTL821x_PHYSR_DUPLEX			BIT(13)
 #define RTL821x_PHYSR_SPEED			GENMASK(15, 14)
@@ -31,6 +40,10 @@
 #define RTL821x_EXT_PAGE_SELECT			0x1e
 #define RTL821x_PAGE_SELECT			0x1f
 
+#define RTL8211E_CTRL_DELAY			BIT(13)
+#define RTL8211E_TX_DELAY			BIT(12)
+#define RTL8211E_RX_DELAY			BIT(11)
+
 #define RTL8211F_PHYCR1				0x18
 #define RTL8211F_PHYCR2				0x19
 #define RTL8211F_CLKOUT_EN			BIT(0)
@@ -47,6 +60,8 @@
 #define RTL8211F_LEDCR_MASK			GENMASK(4, 0)
 #define RTL8211F_LEDCR_SHIFT			5
 
+#define RTL8211F_LED_COUNT			3
+
 #define RTL8211F_TX_DELAY			BIT(8)
 #define RTL8211F_RX_DELAY			BIT(3)
 
@@ -54,19 +69,6 @@
 #define RTL8211F_ALDPS_ENABLE			BIT(2)
 #define RTL8211F_ALDPS_XTAL_OFF			BIT(12)
 
-#define RTL8211E_CTRL_DELAY			BIT(13)
-#define RTL8211E_TX_DELAY			BIT(12)
-#define RTL8211E_RX_DELAY			BIT(11)
-
-#define RTL8201F_ISR				0x1e
-#define RTL8201F_ISR_ANERR			BIT(15)
-#define RTL8201F_ISR_DUPLEX			BIT(13)
-#define RTL8201F_ISR_LINK			BIT(11)
-#define RTL8201F_ISR_MASK			(RTL8201F_ISR_ANERR | \
-						 RTL8201F_ISR_DUPLEX | \
-						 RTL8201F_ISR_LINK)
-#define RTL8201F_IER				0x13
-
 #define RTL822X_VND1_SERDES_OPTION			0x697a
 #define RTL822X_VND1_SERDES_OPTION_MODE_MASK		GENMASK(5, 0)
 #define RTL822X_VND1_SERDES_OPTION_MODE_2500BASEX_SGMII		0
@@ -112,8 +114,6 @@
 #define RTL_8221B_VN_CG				0x001cc84a
 #define RTL_8251B				0x001cc862
 
-#define RTL8211F_LED_COUNT			3
-
 MODULE_DESCRIPTION("Realtek PHY driver");
 MODULE_AUTHOR("Johnson Leung");
 MODULE_LICENSE("GPL");
-- 
2.39.5

[net-next v5 2/4] net: phy: realtek: Clean up RTL8211E ExtPage access

[Michael Klein]

- Factor out RTL8211E extension page access code to
  rtl8211e_modify_ext_page() and clean up rtl8211e_config_init()

Signed-off-by: Michael Klein <michael@fossekall.de>
---
 drivers/net/phy/realtek/realtek_main.c | 38 +++++++++++++++-----------
 1 file changed, 22 insertions(+), 16 deletions(-)

diff --git a/drivers/net/phy/realtek/realtek_main.c b/drivers/net/phy/realtek/realtek_main.c
index b27c0f995e56..e60c18551a4e 100644
--- a/drivers/net/phy/realtek/realtek_main.c
+++ b/drivers/net/phy/realtek/realtek_main.c
@@ -37,9 +37,11 @@
 
 #define RTL821x_INSR				0x13
 
-#define RTL821x_EXT_PAGE_SELECT			0x1e
 #define RTL821x_PAGE_SELECT			0x1f
 
+#define RTL8211E_EXT_PAGE_SELECT		0x1e
+#define RTL8211E_SET_EXT_PAGE			0x07
+
 #define RTL8211E_CTRL_DELAY			BIT(13)
 #define RTL8211E_TX_DELAY			BIT(12)
 #define RTL8211E_RX_DELAY			BIT(11)
@@ -135,6 +137,21 @@ static int rtl821x_write_page(struct phy_device *phydev, int page)
 	return __phy_write(phydev, RTL821x_PAGE_SELECT, page);
 }
 
+static int rtl8211e_modify_ext_page(struct phy_device *phydev, u16 ext_page,
+				    u32 regnum, u16 mask, u16 set)
+{
+	int oldpage, ret = 0;
+
+	oldpage = phy_select_page(phydev, RTL8211E_SET_EXT_PAGE);
+	if (oldpage >= 0) {
+		ret = __phy_write(phydev, RTL8211E_EXT_PAGE_SELECT, ext_page);
+		if (ret == 0)
+			ret = __phy_modify(phydev, regnum, mask, set);
+	}
+
+	return phy_restore_page(phydev, oldpage, ret);
+}
+
 static int rtl821x_probe(struct phy_device *phydev)
 {
 	struct device *dev = &phydev->mdio.dev;
@@ -607,7 +624,9 @@ static int rtl8211f_led_hw_control_set(struct phy_device *phydev, u8 index,
 
 static int rtl8211e_config_init(struct phy_device *phydev)
 {
-	int ret = 0, oldpage;
+	const u16 delay_mask = RTL8211E_CTRL_DELAY |
+			       RTL8211E_TX_DELAY |
+			       RTL8211E_RX_DELAY;
 	u16 val;
 
 	/* enable TX/RX delay for rgmii-* modes, and disable them for rgmii. */
@@ -637,20 +656,7 @@ static int rtl8211e_config_init(struct phy_device *phydev)
 	 * 12 = RX Delay, 11 = TX Delay
 	 * 10:0 = Test && debug settings reserved by realtek
 	 */
-	oldpage = phy_select_page(phydev, 0x7);
-	if (oldpage < 0)
-		goto err_restore_page;
-
-	ret = __phy_write(phydev, RTL821x_EXT_PAGE_SELECT, 0xa4);
-	if (ret)
-		goto err_restore_page;
-
-	ret = __phy_modify(phydev, 0x1c, RTL8211E_CTRL_DELAY
-			   | RTL8211E_TX_DELAY | RTL8211E_RX_DELAY,
-			   val);
-
-err_restore_page:
-	return phy_restore_page(phydev, oldpage, ret);
+	return rtl8211e_modify_ext_page(phydev, 0xa4, 0x1c, delay_mask, val);
 }
 
 static int rtl8211b_suspend(struct phy_device *phydev)
-- 
2.39.5

[net-next v5 3/4] net: phy: realtek: use __set_bit() in rtl8211f_led_hw_control_get()

[Michael Klein]

rtl8211f_led_hw_control_get() does not need atomic bit operations,
replace set_bit() by __set_bit().

Signed-off-by: Michael Klein <michael@fossekall.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
---
 drivers/net/phy/realtek/realtek_main.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/net/phy/realtek/realtek_main.c b/drivers/net/phy/realtek/realtek_main.c
index e60c18551a4e..0fcc57ad777f 100644
--- a/drivers/net/phy/realtek/realtek_main.c
+++ b/drivers/net/phy/realtek/realtek_main.c
@@ -577,17 +577,17 @@ static int rtl8211f_led_hw_control_get(struct phy_device *phydev, u8 index,
 	val &= RTL8211F_LEDCR_MASK;
 
 	if (val & RTL8211F_LEDCR_LINK_10)
-		set_bit(TRIGGER_NETDEV_LINK_10, rules);
+		__set_bit(TRIGGER_NETDEV_LINK_10, rules);
 
 	if (val & RTL8211F_LEDCR_LINK_100)
-		set_bit(TRIGGER_NETDEV_LINK_100, rules);
+		__set_bit(TRIGGER_NETDEV_LINK_100, rules);
 
 	if (val & RTL8211F_LEDCR_LINK_1000)
-		set_bit(TRIGGER_NETDEV_LINK_1000, rules);
+		__set_bit(TRIGGER_NETDEV_LINK_1000, rules);
 
 	if (val & RTL8211F_LEDCR_ACT_TXRX) {
-		set_bit(TRIGGER_NETDEV_RX, rules);
-		set_bit(TRIGGER_NETDEV_TX, rules);
+		__set_bit(TRIGGER_NETDEV_RX, rules);
+		__set_bit(TRIGGER_NETDEV_TX, rules);
 	}
 
 	return 0;
-- 
2.39.5

[net-next v5 4/4] net: phy: realtek: Add support for PHY LEDs on RTL8211E

[Michael Klein]

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>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
---
 drivers/net/phy/realtek/realtek_main.c | 125 +++++++++++++++++++++++--
 1 file changed, 119 insertions(+), 6 deletions(-)

diff --git a/drivers/net/phy/realtek/realtek_main.c b/drivers/net/phy/realtek/realtek_main.c
index 0fcc57ad777f..9c3727a646f2 100644
--- a/drivers/net/phy/realtek/realtek_main.c
+++ b/drivers/net/phy/realtek/realtek_main.c
@@ -46,6 +46,20 @@
 #define RTL8211E_TX_DELAY			BIT(12)
 #define RTL8211E_RX_DELAY			BIT(11)
 
+#define RTL8211E_LEDCR_EXT_PAGE			0x2c
+
+#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_PHYCR1				0x18
 #define RTL8211F_PHYCR2				0x19
 #define RTL8211F_CLKOUT_EN			BIT(0)
@@ -62,7 +76,8 @@
 #define RTL8211F_LEDCR_MASK			GENMASK(4, 0)
 #define RTL8211F_LEDCR_SHIFT			5
 
-#define RTL8211F_LED_COUNT			3
+/* RTL8211E and RTL8211F support up to three LEDs */
+#define RTL8211x_LED_COUNT			3
 
 #define RTL8211F_TX_DELAY			BIT(8)
 #define RTL8211F_RX_DELAY			BIT(3)
@@ -137,6 +152,21 @@ static int rtl821x_write_page(struct phy_device *phydev, int page)
 	return __phy_write(phydev, RTL821x_PAGE_SELECT, page);
 }
 
+static int rtl8211e_read_ext_page(struct phy_device *phydev, u16 ext_page,
+				  u32 regnum)
+{
+	int oldpage, ret = 0;
+
+	oldpage = phy_select_page(phydev, RTL8211E_SET_EXT_PAGE);
+	if (oldpage >= 0) {
+		ret = __phy_write(phydev, RTL8211E_EXT_PAGE_SELECT, ext_page);
+		if (ret == 0)
+			ret = __phy_read(phydev, regnum);
+	}
+
+	return phy_restore_page(phydev, oldpage, ret);
+}
+
 static int rtl8211e_modify_ext_page(struct phy_device *phydev, u16 ext_page,
 				    u32 regnum, u16 mask, u16 set)
 {
@@ -526,7 +556,7 @@ 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) |
@@ -545,9 +575,11 @@ 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. */
@@ -566,7 +598,7 @@ 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);
@@ -599,7 +631,7 @@ 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))
@@ -622,6 +654,84 @@ 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 ret;
+	u16 cr1, cr2;
+
+	if (index >= RTL8211x_LED_COUNT)
+		return -EINVAL;
+
+	ret = rtl8211e_read_ext_page(phydev, RTL8211E_LEDCR_EXT_PAGE,
+				     RTL8211E_LEDCR1);
+	if (ret < 0)
+		return ret;
+
+	cr1 = ret >> RTL8211E_LEDCR1_SHIFT * index;
+	if (cr1 & RTL8211E_LEDCR1_ACT_TXRX) {
+		__set_bit(TRIGGER_NETDEV_RX, rules);
+		__set_bit(TRIGGER_NETDEV_TX, rules);
+	}
+
+	ret = rtl8211e_read_ext_page(phydev, RTL8211E_LEDCR_EXT_PAGE,
+				     RTL8211E_LEDCR2);
+	if (ret < 0)
+		return ret;
+
+	cr2 = ret >> 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);
+
+	return 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 ret;
+
+	if (index >= RTL8211x_LED_COUNT)
+		return -EINVAL;
+
+	if (test_bit(TRIGGER_NETDEV_RX, &rules) ||
+	    test_bit(TRIGGER_NETDEV_TX, &rules)) {
+		cr1 |= RTL8211E_LEDCR1_ACT_TXRX;
+	}
+
+	cr1 <<= RTL8211E_LEDCR1_SHIFT * index;
+	ret = rtl8211e_modify_ext_page(phydev, RTL8211E_LEDCR_EXT_PAGE,
+				       RTL8211E_LEDCR1, cr1mask, cr1);
+	if (ret < 0)
+		return ret;
+
+	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 = rtl8211e_modify_ext_page(phydev, RTL8211E_LEDCR_EXT_PAGE,
+				       RTL8211E_LEDCR2, cr2mask, cr2);
+
+	return ret;
+}
+
 static int rtl8211e_config_init(struct phy_device *phydev)
 {
 	const u16 delay_mask = RTL8211E_CTRL_DELAY |
@@ -1398,6 +1508,9 @@ 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",
@@ -1411,7 +1524,7 @@ 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

Re: [net-next v5 0/4] net: phy: realtek: Add support for PHY LEDs on

[Jakub Kicinski]

On Wed, 26 Mar 2025 22:21:21 +0100 Michael Klein wrote:
> Changes in V5:
> - Split cleanup patch and improve code formatting

## Form letter - net-next-closed

Linus already pulled net-next material v6.15 and therefore net-next is closed
for new drivers, features, code refactoring and optimizations. We are currently
accepting bug fixes only.

Please repost when net-next reopens after Apr 7th.

RFC patches sent for review only are obviously welcome at any time.

See: https://www.kernel.org/doc/html/next/process/maintainer-netdev.html#development-cycle
-- 
pw-bot: defer
pv-bot: closed