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From d7943c31d57c11e1a517aa3ce2006fca44866870 Mon Sep 17 00:00:00 2001
From: Jianhui Zhao <zhaojh329@gmail.com>
Date: Sun, 24 Sep 2023 22:15:00 +0800
Subject: [PATCH] net: phy: realtek: add interrupt support for RTL8221B
This commit introduces interrupt support for RTL8221B.
Signed-off-by: Jianhui Zhao <zhaojh329@gmail.com>
---
drivers/net/phy/realtek.c | 47 +++++++++++++++++++++++++++++++++++++++
1 file changed, 47 insertions(+)
--- a/drivers/net/phy/realtek.c
+++ b/drivers/net/phy/realtek.c
@@ -981,6 +981,51 @@ 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),
@@ -1141,6 +1186,8 @@ 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,
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