[openwrt/openwrt] generic: net: phy: realtek: add interrupt support for RTL8221B

[LEDE Commits]

rmilecki pushed a commit to openwrt/openwrt.git, branch openwrt-23.05:
https://git.openwrt.org/cc285dc2b6f7699b689f8f9cb7ba582f176d921c

commit cc285dc2b6f7699b689f8f9cb7ba582f176d921c
Author: Jianhui Zhao <zhaojh329 at gmail.com>
AuthorDate: Sun Sep 24 22:15:00 2023 +0800

    generic: net: phy: realtek: add interrupt support for RTL8221B
    
    This commit introduces interrupt support for RTL8221B.
    
    Signed-off-by: Jianhui Zhao <zhaojh329 at gmail.com>
    (cherry picked from commit 1db949a632607aa1df2987b7701da0be3e473260)
---
 ...phy-realtek-support-interrupt-of-RTL8221B.patch | 63 ++++++++++++++++++++++
 ...phy-realtek-support-interrupt-of-RTL8221B.patch | 63 ++++++++++++++++++++++
 2 files changed, 126 insertions(+)

diff --git a/target/linux/generic/pending-5.15/731-net-phy-realtek-support-interrupt-of-RTL8221B.patch b/target/linux/generic/pending-5.15/731-net-phy-realtek-support-interrupt-of-RTL8221B.patch
new file mode 100644
index 0000000000..b2b41d9c61
--- /dev/null
+++ b/target/linux/generic/pending-5.15/731-net-phy-realtek-support-interrupt-of-RTL8221B.patch
@@ -0,0 +1,63 @@
+--- a/drivers/net/phy/realtek.c
++++ b/drivers/net/phy/realtek.c
+@@ -971,6 +971,51 @@ static int rtl8221b_config_init(struct p
+ 	return 0;
+ }
+ 
++static int rtl8221b_ack_interrupt(struct phy_device *phydev)
++{
++	int err;
++
++	err = phy_read_mmd(phydev, RTL8221B_MMD_PHY_CTRL, 0xa4d4);
++
++	return (err < 0) ? err : 0;
++}
++
++static int rtl8221b_config_intr(struct phy_device *phydev)
++{
++	int err;
++
++	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
++		err = rtl8221b_ack_interrupt(phydev);
++		if (err)
++			return err;
++
++		err = phy_write_mmd(phydev, RTL8221B_MMD_PHY_CTRL, 0xa4d2, 0x7ff);
++	} else {
++		err = phy_write_mmd(phydev, RTL8221B_MMD_PHY_CTRL, 0xa4d2, 0x0);
++		if (err)
++			return err;
++
++		err = rtl8221b_ack_interrupt(phydev);
++	}
++
++	return err;
++}
++
++static irqreturn_t rtl8221b_handle_interrupt(struct phy_device *phydev)
++{
++	int err;
++
++	err = rtl8221b_ack_interrupt(phydev);
++	if (err) {
++		phy_error(phydev);
++		return IRQ_NONE;
++	}
++
++	phy_trigger_machine(phydev);
++
++	return IRQ_HANDLED;
++}
++
+ static struct phy_driver realtek_drvs[] = {
+ 	{
+ 		PHY_ID_MATCH_EXACT(0x00008201),
+@@ -1119,6 +1164,8 @@ static struct phy_driver realtek_drvs[]
+ 		.get_features   = rtl822x_get_features,
+ 		.config_init    = rtl8221b_config_init,
+ 		.config_aneg    = rtl822x_config_aneg,
++		.config_intr	= rtl8221b_config_intr,
++		.handle_interrupt = rtl8221b_handle_interrupt,
+ 		.probe          = rtl822x_probe,
+ 		.read_status    = rtl822x_read_status,
+ 		.suspend        = genphy_suspend,
diff --git a/target/linux/generic/pending-6.1/741-net-phy-realtek-support-interrupt-of-RTL8221B.patch b/target/linux/generic/pending-6.1/741-net-phy-realtek-support-interrupt-of-RTL8221B.patch
new file mode 100644
index 0000000000..55a9e3529d
--- /dev/null
+++ b/target/linux/generic/pending-6.1/741-net-phy-realtek-support-interrupt-of-RTL8221B.patch
@@ -0,0 +1,63 @@
+--- a/drivers/net/phy/realtek.c
++++ b/drivers/net/phy/realtek.c
+@@ -979,6 +979,51 @@ static int rtl8221b_config_init(struct p
+ 	return 0;
+ }
+ 
++static int rtl8221b_ack_interrupt(struct phy_device *phydev)
++{
++	int err;
++
++	err = phy_read_mmd(phydev, RTL8221B_MMD_PHY_CTRL, 0xa4d4);
++
++	return (err < 0) ? err : 0;
++}
++
++static int rtl8221b_config_intr(struct phy_device *phydev)
++{
++	int err;
++
++	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
++		err = rtl8221b_ack_interrupt(phydev);
++		if (err)
++			return err;
++
++		err = phy_write_mmd(phydev, RTL8221B_MMD_PHY_CTRL, 0xa4d2, 0x7ff);
++	} else {
++		err = phy_write_mmd(phydev, RTL8221B_MMD_PHY_CTRL, 0xa4d2, 0x0);
++		if (err)
++			return err;
++
++		err = rtl8221b_ack_interrupt(phydev);
++	}
++
++	return err;
++}
++
++static irqreturn_t rtl8221b_handle_interrupt(struct phy_device *phydev)
++{
++	int err;
++
++	err = rtl8221b_ack_interrupt(phydev);
++	if (err) {
++		phy_error(phydev);
++		return IRQ_NONE;
++	}
++
++	phy_trigger_machine(phydev);
++
++	return IRQ_HANDLED;
++}
++
+ static struct phy_driver realtek_drvs[] = {
+ 	{
+ 		PHY_ID_MATCH_EXACT(0x00008201),
+@@ -1139,6 +1184,8 @@ static struct phy_driver realtek_drvs[]
+ 		.get_features   = rtl822x_get_features,
+ 		.config_init    = rtl8221b_config_init,
+ 		.config_aneg    = rtl822x_config_aneg,
++		.config_intr	= rtl8221b_config_intr,
++		.handle_interrupt = rtl8221b_handle_interrupt,
+ 		.probe          = rtl822x_probe,
+ 		.read_status    = rtl822x_read_status,
+ 		.suspend        = genphy_suspend,