[RFC net-next 4/5] net: phy: at803x: implement generic .handle_interrupt() callback

[Ioana Ciornei]

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: Oleksij Rempel <o.rem...@pengutronix.de>
Cc: Michael Walle <mich...@walle.cc>
Signed-off-by: Ioana Ciornei <ioana.cior...@nxp.com>
---
 drivers/net/phy/at803x.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
index ed601a7e46a0..106c6f53755f 100644
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -628,6 +628,24 @@ static int at803x_config_intr(struct phy_device *phydev)
        return err;
 }
 
+static irqreturn_t at803x_handle_interrupt(struct phy_device *phydev)
+{
+       int irq_status;
+
+       irq_status = phy_read(phydev, AT803X_INTR_STATUS);
+       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 void at803x_link_change_notify(struct phy_device *phydev)
 {
        /*
@@ -1064,6 +1082,7 @@ static struct phy_driver at803x_driver[] = {
        .read_status            = at803x_read_status,
        .ack_interrupt          = at803x_ack_interrupt,
        .config_intr            = at803x_config_intr,
+       .handle_interrupt       = at803x_handle_interrupt,
        .get_tunable            = at803x_get_tunable,
        .set_tunable            = at803x_set_tunable,
        .cable_test_start       = at803x_cable_test_start,
@@ -1084,6 +1103,7 @@ static struct phy_driver at803x_driver[] = {
        /* PHY_BASIC_FEATURES */
        .ack_interrupt          = at803x_ack_interrupt,
        .config_intr            = at803x_config_intr,
+       .handle_interrupt       = at803x_handle_interrupt,
 }, {
        /* Qualcomm Atheros AR8031/AR8033 */
        PHY_ID_MATCH_EXACT(ATH8031_PHY_ID),
@@ -1102,6 +1122,7 @@ static struct phy_driver at803x_driver[] = {
        .aneg_done              = at803x_aneg_done,
        .ack_interrupt          = &at803x_ack_interrupt,
        .config_intr            = &at803x_config_intr,
+       .handle_interrupt       = at803x_handle_interrupt,
        .get_tunable            = at803x_get_tunable,
        .set_tunable            = at803x_set_tunable,
        .cable_test_start       = at803x_cable_test_start,
@@ -1122,6 +1143,7 @@ static struct phy_driver at803x_driver[] = {
        /* PHY_BASIC_FEATURES */
        .ack_interrupt          = at803x_ack_interrupt,
        .config_intr            = at803x_config_intr,
+       .handle_interrupt       = at803x_handle_interrupt,
        .cable_test_start       = at803x_cable_test_start,
        .cable_test_get_status  = at803x_cable_test_get_status,
 }, {
@@ -1134,6 +1156,7 @@ static struct phy_driver at803x_driver[] = {
        /* PHY_BASIC_FEATURES */
        .ack_interrupt          = &at803x_ack_interrupt,
        .config_intr            = &at803x_config_intr,
+       .handle_interrupt       = at803x_handle_interrupt,
        .cable_test_start       = at803x_cable_test_start,
        .cable_test_get_status  = at803x_cable_test_get_status,
        .read_status            = at803x_read_status,
-- 
2.28.0