netdev - [PATCH net-next 17/18] net: phy: adin: implement generic .handle

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Date:   Thu, 12 Nov 2020 17:55:12 +0200
From:   Ioana Ciornei <ciorneiioana@...il.com>
To:     Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Florian Fainelli <f.fainelli@...il.com>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Ioana Ciornei <ioana.ciornei@....com>,
        Alexandru Ardelean <alexandru.ardelean@...log.com>
Subject: [PATCH net-next 17/18] net: phy: adin: implement generic .handle_interrupt() callback

From: Ioana Ciornei <ioana.ciornei@....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.

Cc: Alexandru Ardelean <alexandru.ardelean@...log.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@....com>
---
 drivers/net/phy/adin.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/net/phy/adin.c b/drivers/net/phy/adin.c
index 3727b38addf7..ba24434b867d 100644
--- a/drivers/net/phy/adin.c
+++ b/drivers/net/phy/adin.c
@@ -479,6 +479,24 @@ static int adin_phy_config_intr(struct phy_device *phydev)
 			      ADIN1300_INT_MASK_EN);
 }
 
+static irqreturn_t adin_phy_handle_interrupt(struct phy_device *phydev)
+{
+	int irq_status;
+
+	irq_status = phy_read(phydev, ADIN1300_INT_STATUS_REG);
+	if (irq_status < 0) {
+		phy_error(phydev);
+		return IRQ_NONE;
+	}
+
+	if (!(irq_status & ADIN1300_INT_LINK_STAT_CHNG_EN))
+		return IRQ_NONE;
+
+	phy_trigger_machine(phydev);
+
+	return IRQ_HANDLED;
+}
+
 static int adin_cl45_to_adin_reg(struct phy_device *phydev, int devad,
 				 u16 cl45_regnum)
 {
@@ -879,6 +897,7 @@ static struct phy_driver adin_driver[] = {
 		.set_tunable	= adin_set_tunable,
 		.ack_interrupt	= adin_phy_ack_intr,
 		.config_intr	= adin_phy_config_intr,
+		.handle_interrupt = adin_phy_handle_interrupt,
 		.get_sset_count	= adin_get_sset_count,
 		.get_strings	= adin_get_strings,
 		.get_stats	= adin_get_stats,
@@ -902,6 +921,7 @@ static struct phy_driver adin_driver[] = {
 		.set_tunable	= adin_set_tunable,
 		.ack_interrupt	= adin_phy_ack_intr,
 		.config_intr	= adin_phy_config_intr,
+		.handle_interrupt = adin_phy_handle_interrupt,
 		.get_sset_count	= adin_get_sset_count,
 		.get_strings	= adin_get_strings,
 		.get_stats	= adin_get_stats,
-- 
2.28.0