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From:   Ioana Ciornei <ciorneiioana@gmail.com>
To:     Andrew Lunn <andrew@lunn.ch>,
        Heiner Kallweit <hkallweit1@gmail.com>,
        Russell King <linux@armlinux.org.uk>,
        Jakub Kicinski <kuba@kernel.org>, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org
Cc:     Ioana Ciornei <ioana.ciornei@nxp.com>
Subject: [PATCH net-next 15/19] net: phy: davicom: implement generic .handle_interrupt() calback
Date:   Thu, 29 Oct 2020 12:07:37 +0200
Message-Id: <20201029100741.462818-16-ciorneiioana@gmail.com>
In-Reply-To: <20201029100741.462818-1-ciorneiioana@gmail.com>
References: <20201029100741.462818-1-ciorneiioana@gmail.com>
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From: Ioana Ciornei <ioana.ciornei@nxp.com>

In an attempt to actually support shared IRQs in phylib, we now move the
responsibility of triggering the phylib state machine or just returning
IRQ_NONE, based on the IRQ status register, to the PHY driver. Having
3 different IRQ handling callbacks (.handle_interrupt(),
.did_interrupt() and .ack_interrupt() ) is confusing so let the PHY
driver implement directly an IRQ handler like any other device driver.
Make this driver follow the new convention.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
---
 drivers/net/phy/davicom.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/net/phy/davicom.c b/drivers/net/phy/davicom.c
index 942f277463a4..262ff6c79860 100644
--- a/drivers/net/phy/davicom.c
+++ b/drivers/net/phy/davicom.c
@@ -77,6 +77,24 @@ static int dm9161_config_intr(struct phy_device *phydev)
 	return temp;
 }
 
+static irqreturn_t dm9161_handle_interrupt(struct phy_device *phydev)
+{
+	int irq_status;
+
+	irq_status = phy_read(phydev, MII_DM9161_INTR);
+	if (irq_status < 0) {
+		phy_error(phydev);
+		return IRQ_NONE;
+	}
+
+	if (irq_status == 0)
+		return IRQ_NONE;
+
+	phy_trigger_machine(phydev);
+
+	return IRQ_HANDLED;
+}
+
 static int dm9161_config_aneg(struct phy_device *phydev)
 {
 	int err;
@@ -149,6 +167,7 @@ static struct phy_driver dm91xx_driver[] = {
 	.config_aneg	= dm9161_config_aneg,
 	.ack_interrupt	= dm9161_ack_interrupt,
 	.config_intr	= dm9161_config_intr,
+	.handle_interrupt = dm9161_handle_interrupt,
 }, {
 	.phy_id		= 0x0181b8b0,
 	.name		= "Davicom DM9161B/C",
@@ -158,6 +177,7 @@ static struct phy_driver dm91xx_driver[] = {
 	.config_aneg	= dm9161_config_aneg,
 	.ack_interrupt	= dm9161_ack_interrupt,
 	.config_intr	= dm9161_config_intr,
+	.handle_interrupt = dm9161_handle_interrupt,
 }, {
 	.phy_id		= 0x0181b8a0,
 	.name		= "Davicom DM9161A",
@@ -167,6 +187,7 @@ static struct phy_driver dm91xx_driver[] = {
 	.config_aneg	= dm9161_config_aneg,
 	.ack_interrupt	= dm9161_ack_interrupt,
 	.config_intr	= dm9161_config_intr,
+	.handle_interrupt = dm9161_handle_interrupt,
 }, {
 	.phy_id		= 0x00181b80,
 	.name		= "Davicom DM9131",
@@ -174,6 +195,7 @@ static struct phy_driver dm91xx_driver[] = {
 	/* PHY_BASIC_FEATURES */
 	.ack_interrupt	= dm9161_ack_interrupt,
 	.config_intr	= dm9161_config_intr,
+	.handle_interrupt = dm9161_handle_interrupt,
 } };
 
 module_phy_driver(dm91xx_driver);
-- 
2.28.0