diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/phy/micrel.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c index 44a24b99c894..4570cb9535b7 100644 --- a/drivers/net/phy/micrel.c +++ b/drivers/net/phy/micrel.c @@ -66,6 +66,19 @@ #define KSZ8081_LMD_SHORT_INDICATOR BIT(12) #define KSZ8081_LMD_DELTA_TIME_MASK GENMASK(8, 0) +/* Lan8814 general Interrupt control/status reg in GPHY specific block. */ +#define LAN8814_INTC 0x18 +#define LAN8814_INTS 0x1B + +#define LAN8814_INT_LINK_DOWN BIT(2) +#define LAN8814_INT_LINK_UP BIT(0) +#define LAN8814_INT_LINK (LAN8814_INT_LINK_UP |\ + LAN8814_INT_LINK_DOWN) + +#define LAN8814_INTR_CTRL_REG 0x34 +#define LAN8814_INTR_CTRL_REG_POLARITY BIT(1) +#define LAN8814_INTR_CTRL_REG_INTR_ENABLE BIT(0) + /* PHY Control 1 */ #define MII_KSZPHY_CTRL_1 0x1e #define KSZ8081_CTRL1_MDIX_STAT BIT(4) @@ -1565,6 +1578,14 @@ static int ksz886x_cable_test_get_status(struct phy_device *phydev, #define LAN_EXT_PAGE_ACCESS_ADDRESS_DATA 0x17 #define LAN_EXT_PAGE_ACCESS_CTRL_EP_FUNC 0x4000 +#define LAN8814_QSGMII_SOFT_RESET 0x43 +#define LAN8814_QSGMII_SOFT_RESET_BIT BIT(0) +#define LAN8814_QSGMII_PCS1G_ANEG_CONFIG 0x13 +#define LAN8814_QSGMII_PCS1G_ANEG_CONFIG_ANEG_ENA BIT(3) +#define LAN8814_ALIGN_SWAP 0x4a +#define LAN8814_ALIGN_TX_A_B_SWAP 0x1 +#define LAN8814_ALIGN_TX_A_B_SWAP_MASK GENMASK(2, 0) + #define LAN8804_ALIGN_SWAP 0x4a #define LAN8804_ALIGN_TX_A_B_SWAP 0x1 #define LAN8804_ALIGN_TX_A_B_SWAP_MASK GENMASK(2, 0) @@ -1601,6 +1622,29 @@ static int lanphy_write_page_reg(struct phy_device *phydev, int page, u16 addr, return 0; } +static int lan8814_config_init(struct phy_device *phydev) +{ + int val; + + /* Reset the PHY */ + val = lanphy_read_page_reg(phydev, 4, LAN8814_QSGMII_SOFT_RESET); + val |= LAN8814_QSGMII_SOFT_RESET_BIT; + lanphy_write_page_reg(phydev, 4, LAN8814_QSGMII_SOFT_RESET, val); + + /* Disable ANEG with QSGMII PCS Host side */ + val = lanphy_read_page_reg(phydev, 5, LAN8814_QSGMII_PCS1G_ANEG_CONFIG); + val &= ~LAN8814_QSGMII_PCS1G_ANEG_CONFIG_ANEG_ENA; + lanphy_write_page_reg(phydev, 5, LAN8814_QSGMII_PCS1G_ANEG_CONFIG, val); + + /* MDI-X setting for swap A,B transmit */ + val = lanphy_read_page_reg(phydev, 2, LAN8814_ALIGN_SWAP); + val &= ~LAN8814_ALIGN_TX_A_B_SWAP_MASK; + val |= LAN8814_ALIGN_TX_A_B_SWAP; + lanphy_write_page_reg(phydev, 2, LAN8814_ALIGN_SWAP, val); + + return 0; +} + static int lan8804_config_init(struct phy_device *phydev) { int val; @@ -1620,6 +1664,58 @@ static int lan8804_config_init(struct phy_device *phydev) return 0; } +static irqreturn_t lan8814_handle_interrupt(struct phy_device *phydev) +{ + int irq_status; + + irq_status = phy_read(phydev, LAN8814_INTS); + if (irq_status < 0) + return IRQ_NONE; + + if (!(irq_status & LAN8814_INT_LINK)) + return IRQ_NONE; + + phy_trigger_machine(phydev); + + return IRQ_HANDLED; +} + +static int lan8814_ack_interrupt(struct phy_device *phydev) +{ + /* bit[12..0] int status, which is a read and clear register. */ + int rc; + + rc = phy_read(phydev, LAN8814_INTS); + + return (rc < 0) ? rc : 0; +} + +static int lan8814_config_intr(struct phy_device *phydev) +{ + int err; + + lanphy_write_page_reg(phydev, 4, LAN8814_INTR_CTRL_REG, + LAN8814_INTR_CTRL_REG_POLARITY | + LAN8814_INTR_CTRL_REG_INTR_ENABLE); + + /* enable / disable interrupts */ + if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { + err = lan8814_ack_interrupt(phydev); + if (err) + return err; + + err = phy_write(phydev, LAN8814_INTC, LAN8814_INT_LINK); + } else { + err = phy_write(phydev, LAN8814_INTC, 0); + if (err) + return err; + + err = lan8814_ack_interrupt(phydev); + } + + return err; +} + static struct phy_driver ksphy_driver[] = { { .phy_id = PHY_ID_KS8737, @@ -1793,6 +1889,7 @@ static struct phy_driver ksphy_driver[] = { .phy_id = PHY_ID_LAN8814, .phy_id_mask = MICREL_PHY_ID_MASK, .name = "Microchip INDY Gigabit Quad PHY", + .config_init = lan8814_config_init, .driver_data = &ksz9021_type, .probe = kszphy_probe, .soft_reset = genphy_soft_reset, @@ -1802,6 +1899,8 @@ static struct phy_driver ksphy_driver[] = { .get_stats = kszphy_get_stats, .suspend = genphy_suspend, .resume = kszphy_resume, + .config_intr = lan8814_config_intr, + .handle_interrupt = lan8814_handle_interrupt, }, { .phy_id = PHY_ID_LAN8804, .phy_id_mask = MICREL_PHY_ID_MASK, |