diff --git a/drivers/net/phy/microchip_t1.c b/drivers/net/phy/microchip_t1.c index a5ef8fe50704..f99f37634d5e 100644 --- a/drivers/net/phy/microchip_t1.c +++ b/drivers/net/phy/microchip_t1.c @@ -226,6 +226,18 @@ #define MICROCHIP_CABLE_MAX_TIME_DIFF \ (MICROCHIP_CABLE_MIN_TIME_DIFF + MICROCHIP_CABLE_TIME_MARGIN) +#define LAN887X_INT_STS 0xf000 +#define LAN887X_INT_MSK 0xf001 +#define LAN887X_INT_MSK_T1_PHY_INT_MSK BIT(2) +#define LAN887X_INT_MSK_LINK_UP_MSK BIT(1) +#define LAN887X_INT_MSK_LINK_DOWN_MSK BIT(0) + +#define LAN887X_MX_CHIP_TOP_LINK_MSK (LAN887X_INT_MSK_LINK_UP_MSK |\ + LAN887X_INT_MSK_LINK_DOWN_MSK) + +#define LAN887X_MX_CHIP_TOP_ALL_MSK (LAN887X_INT_MSK_T1_PHY_INT_MSK |\ + LAN887X_MX_CHIP_TOP_LINK_MSK) + #define DRIVER_AUTHOR "Nisar Sayed " #define DRIVER_DESC "Microchip LAN87XX/LAN937x/LAN887x T1 PHY driver" @@ -1474,6 +1486,49 @@ static void lan887x_get_strings(struct phy_device *phydev, u8 *data) ethtool_puts(&data, lan887x_hw_stats[i].string); } +static int lan887x_config_intr(struct phy_device *phydev) +{ + int rc; + + if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { + /* Clear the interrupt status before enabling interrupts */ + rc = phy_read_mmd(phydev, MDIO_MMD_VEND1, LAN887X_INT_STS); + if (rc < 0) + return rc; + + /* Unmask for enabling interrupt */ + rc = phy_write_mmd(phydev, MDIO_MMD_VEND1, LAN887X_INT_MSK, + (u16)~LAN887X_MX_CHIP_TOP_ALL_MSK); + } else { + rc = phy_write_mmd(phydev, MDIO_MMD_VEND1, LAN887X_INT_MSK, + GENMASK(15, 0)); + if (rc < 0) + return rc; + + rc = phy_read_mmd(phydev, MDIO_MMD_VEND1, LAN887X_INT_STS); + } + + return rc < 0 ? rc : 0; +} + +static irqreturn_t lan887x_handle_interrupt(struct phy_device *phydev) +{ + int irq_status; + + irq_status = phy_read_mmd(phydev, MDIO_MMD_VEND1, LAN887X_INT_STS); + if (irq_status < 0) { + phy_error(phydev); + return IRQ_NONE; + } + + if (irq_status & LAN887X_MX_CHIP_TOP_LINK_MSK) { + phy_trigger_machine(phydev); + return IRQ_HANDLED; + } + + return IRQ_NONE; +} + static int lan887x_cd_reset(struct phy_device *phydev, enum cable_diag_state cd_done) { @@ -1504,6 +1559,10 @@ static int lan887x_cd_reset(struct phy_device *phydev, if (rc < 0) return rc; + rc = lan887x_config_intr(phydev); + if (rc < 0) + return rc; + rc = lan887x_phy_reconfig(phydev); if (rc < 0) return rc; @@ -1881,6 +1940,8 @@ static struct phy_driver microchip_t1_phy_driver[] = { .read_status = genphy_c45_read_status, .cable_test_start = lan887x_cable_test_start, .cable_test_get_status = lan887x_cable_test_get_status, + .config_intr = lan887x_config_intr, + .handle_interrupt = lan887x_handle_interrupt, } };