[PATCH net-next 09/18] net: phy: nxp-tja11xx: 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: Marek Vasut <ma...@denx.de>
Cc: Oleksij Rempel <o.rem...@pengutronix.de>
Signed-off-by: Ioana Ciornei <ioana.cior...@nxp.com>
---
 drivers/net/phy/nxp-tja11xx.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/drivers/net/phy/nxp-tja11xx.c b/drivers/net/phy/nxp-tja11xx.c
index a72fa0d2e7c7..1c4c5c267fe6 100644
--- a/drivers/net/phy/nxp-tja11xx.c
+++ b/drivers/net/phy/nxp-tja11xx.c
@@ -44,6 +44,9 @@
 #define MII_CFG2_SLEEP_REQUEST_TO_16MS 0x3
 
 #define MII_INTSRC                     21
+#define MII_INTSRC_LINK_FAIL           BIT(10)
+#define MII_INTSRC_LINK_UP             BIT(9)
+#define MII_INTSRC_MASK                        (MII_INTSRC_LINK_FAIL | 
MII_INTSRC_LINK_UP)
 #define MII_INTSRC_TEMP_ERR            BIT(1)
 #define MII_INTSRC_UV_ERR              BIT(3)
 
@@ -604,6 +607,24 @@ static int tja11xx_config_intr(struct phy_device *phydev)
        return phy_write(phydev, MII_INTEN, value);
 }
 
+static irqreturn_t tja11xx_handle_interrupt(struct phy_device *phydev)
+{
+       int irq_status;
+
+       irq_status = phy_read(phydev, MII_INTSRC);
+       if (irq_status < 0) {
+               phy_error(phydev);
+               return IRQ_NONE;
+       }
+
+       if (!(irq_status & MII_INTSRC_MASK))
+               return IRQ_NONE;
+
+       phy_trigger_machine(phydev);
+
+       return IRQ_HANDLED;
+}
+
 static int tja11xx_cable_test_start(struct phy_device *phydev)
 {
        int ret;
@@ -749,6 +770,7 @@ static struct phy_driver tja11xx_driver[] = {
                .get_stats      = tja11xx_get_stats,
                .ack_interrupt  = tja11xx_ack_interrupt,
                .config_intr    = tja11xx_config_intr,
+               .handle_interrupt = tja11xx_handle_interrupt,
                .cable_test_start = tja11xx_cable_test_start,
                .cable_test_get_status = tja11xx_cable_test_get_status,
        }, {
@@ -772,6 +794,7 @@ static struct phy_driver tja11xx_driver[] = {
                .get_stats      = tja11xx_get_stats,
                .ack_interrupt  = tja11xx_ack_interrupt,
                .config_intr    = tja11xx_config_intr,
+               .handle_interrupt = tja11xx_handle_interrupt,
                .cable_test_start = tja11xx_cable_test_start,
                .cable_test_get_status = tja11xx_cable_test_get_status,
        }
-- 
2.28.0