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	This commit introduces interrupt support for RTL8221B. Signed-off-by: Jianhui Zhao <zhaojh329@gmail.com>
		
			
				
	
	
		
			64 lines
		
	
	
		
			1.5 KiB
		
	
	
	
		
			Diff
		
	
	
	
	
	
			
		
		
	
	
			64 lines
		
	
	
		
			1.5 KiB
		
	
	
	
		
			Diff
		
	
	
	
	
	
--- a/drivers/net/phy/realtek.c
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+++ b/drivers/net/phy/realtek.c
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@@ -979,6 +979,51 @@ static int rtl8221b_config_init(struct p
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 	return 0;
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 }
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+static int rtl8221b_ack_interrupt(struct phy_device *phydev)
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+{
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+	int err;
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+
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+	err = phy_read_mmd(phydev, RTL8221B_MMD_PHY_CTRL, 0xa4d4);
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+
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+	return (err < 0) ? err : 0;
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+}
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+
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+static int rtl8221b_config_intr(struct phy_device *phydev)
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+{
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+	int err;
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+
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+	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
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+		err = rtl8221b_ack_interrupt(phydev);
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+		if (err)
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+			return err;
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+
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+		err = phy_write_mmd(phydev, RTL8221B_MMD_PHY_CTRL, 0xa4d2, 0x7ff);
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+	} else {
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+		err = phy_write_mmd(phydev, RTL8221B_MMD_PHY_CTRL, 0xa4d2, 0x0);
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+		if (err)
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+			return err;
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+
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+		err = rtl8221b_ack_interrupt(phydev);
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+	}
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+
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+	return err;
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+}
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+
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+static irqreturn_t rtl8221b_handle_interrupt(struct phy_device *phydev)
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+{
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+	int err;
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+
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+	err = rtl8221b_ack_interrupt(phydev);
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+	if (err) {
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+		phy_error(phydev);
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+		return IRQ_NONE;
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+	}
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+
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+	phy_trigger_machine(phydev);
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+
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+	return IRQ_HANDLED;
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+}
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+
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 static struct phy_driver realtek_drvs[] = {
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 	{
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 		PHY_ID_MATCH_EXACT(0x00008201),
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@@ -1139,6 +1184,8 @@ static struct phy_driver realtek_drvs[]
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 		.get_features   = rtl822x_get_features,
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 		.config_init    = rtl8221b_config_init,
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 		.config_aneg    = rtl822x_config_aneg,
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+		.config_intr	= rtl8221b_config_intr,
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+		.handle_interrupt = rtl8221b_handle_interrupt,
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 		.probe          = rtl822x_probe,
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 		.read_status    = rtl822x_read_status,
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 		.suspend        = genphy_suspend,
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