[PATCH net-next v2 09/19] net: phy: aquantia: implement generic .handle_interrupt() callback

[Ioana Ciornei]

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

Cc: Heiner Kallweit <hkallwe...@gmail.com>
Signed-off-by: Ioana Ciornei <ioana.cior...@nxp.com>
---
Changes in v2:
 - adjust .handle_interrupt() so that we only take into account the
   enabled IRQs.

 drivers/net/phy/aquantia_main.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/drivers/net/phy/aquantia_main.c b/drivers/net/phy/aquantia_main.c
index 41e7c1432497..17b33f0cb179 100644
--- a/drivers/net/phy/aquantia_main.c
+++ b/drivers/net/phy/aquantia_main.c
@@ -52,6 +52,7 @@
 #define MDIO_AN_TX_VEND_INT_STATUS1_DOWNSHIFT  BIT(1)
 
 #define MDIO_AN_TX_VEND_INT_STATUS2            0xcc01
+#define MDIO_AN_TX_VEND_INT_STATUS2_MASK       BIT(0)
 
 #define MDIO_AN_TX_VEND_INT_MASK2              0xd401
 #define MDIO_AN_TX_VEND_INT_MASK2_LINK         BIT(0)
@@ -270,6 +271,25 @@ static int aqr_ack_interrupt(struct phy_device *phydev)
        return (reg < 0) ? reg : 0;
 }
 
+static irqreturn_t aqr_handle_interrupt(struct phy_device *phydev)
+{
+       int irq_status;
+
+       irq_status = phy_read_mmd(phydev, MDIO_MMD_AN,
+                                 MDIO_AN_TX_VEND_INT_STATUS2);
+       if (irq_status < 0) {
+               phy_error(phydev);
+               return IRQ_NONE;
+       }
+
+       if (!(irq_status & MDIO_AN_TX_VEND_INT_STATUS2_MASK))
+               return IRQ_NONE;
+
+       phy_trigger_machine(phydev);
+
+       return IRQ_HANDLED;
+}
+
 static int aqr_read_status(struct phy_device *phydev)
 {
        int val;
@@ -585,6 +605,7 @@ static struct phy_driver aqr_driver[] = {
        .config_aneg    = aqr_config_aneg,
        .config_intr    = aqr_config_intr,
        .ack_interrupt  = aqr_ack_interrupt,
+       .handle_interrupt = aqr_handle_interrupt,
        .read_status    = aqr_read_status,
 },
 {
@@ -593,6 +614,7 @@ static struct phy_driver aqr_driver[] = {
        .config_aneg    = aqr_config_aneg,
        .config_intr    = aqr_config_intr,
        .ack_interrupt  = aqr_ack_interrupt,
+       .handle_interrupt = aqr_handle_interrupt,
        .read_status    = aqr_read_status,
 },
 {
@@ -601,6 +623,7 @@ static struct phy_driver aqr_driver[] = {
        .config_aneg    = aqr_config_aneg,
        .config_intr    = aqr_config_intr,
        .ack_interrupt  = aqr_ack_interrupt,
+       .handle_interrupt = aqr_handle_interrupt,
        .read_status    = aqr_read_status,
        .suspend        = aqr107_suspend,
        .resume         = aqr107_resume,
@@ -611,6 +634,7 @@ static struct phy_driver aqr_driver[] = {
        .config_aneg    = aqr_config_aneg,
        .config_intr    = aqr_config_intr,
        .ack_interrupt  = aqr_ack_interrupt,
+       .handle_interrupt = aqr_handle_interrupt,
        .read_status    = aqr_read_status,
 },
 {
@@ -621,6 +645,7 @@ static struct phy_driver aqr_driver[] = {
        .config_aneg    = aqr_config_aneg,
        .config_intr    = aqr_config_intr,
        .ack_interrupt  = aqr_ack_interrupt,
+       .handle_interrupt = aqr_handle_interrupt,
        .read_status    = aqr107_read_status,
        .get_tunable    = aqr107_get_tunable,
        .set_tunable    = aqr107_set_tunable,
@@ -639,6 +664,7 @@ static struct phy_driver aqr_driver[] = {
        .config_aneg    = aqr_config_aneg,
        .config_intr    = aqr_config_intr,
        .ack_interrupt  = aqr_ack_interrupt,
+       .handle_interrupt = aqr_handle_interrupt,
        .read_status    = aqr107_read_status,
        .get_tunable    = aqr107_get_tunable,
        .set_tunable    = aqr107_set_tunable,
@@ -655,6 +681,7 @@ static struct phy_driver aqr_driver[] = {
        .config_aneg    = aqr_config_aneg,
        .config_intr    = aqr_config_intr,
        .ack_interrupt  = aqr_ack_interrupt,
+       .handle_interrupt = aqr_handle_interrupt,
        .read_status    = aqr_read_status,
 },
 };
-- 
2.28.0