diff options
Diffstat (limited to 'drivers/net/phy/nxp-c45-tja11xx.c')
| -rw-r--r-- | drivers/net/phy/nxp-c45-tja11xx.c | 64 |
1 files changed, 58 insertions, 6 deletions
diff --git a/drivers/net/phy/nxp-c45-tja11xx.c b/drivers/net/phy/nxp-c45-tja11xx.c index 92a2eca2a02c..48657307ffb5 100644 --- a/drivers/net/phy/nxp-c45-tja11xx.c +++ b/drivers/net/phy/nxp-c45-tja11xx.c @@ -34,6 +34,8 @@ #define TJA1120_GLOBAL_INFRA_IRQ_STATUS 0x2C0C #define TJA1120_DEV_BOOT_DONE BIT(1) +#define TJA1120_VEND1_PTP_TRIG_DATA_S 0x1070 + #define TJA1120_EGRESS_TS_DATA_S 0x9060 #define TJA1120_EGRESS_TS_END 0x9067 #define TJA1120_TS_VALID BIT(0) @@ -269,6 +271,7 @@ struct nxp_c45_phy_data { void (*counters_enable)(struct phy_device *phydev); bool (*get_egressts)(struct nxp_c45_phy *priv, struct nxp_c45_hwts *hwts); + bool (*get_extts)(struct nxp_c45_phy *priv, struct timespec64 *extts); void (*ptp_init)(struct phy_device *phydev); void (*ptp_enable)(struct phy_device *phydev, bool enable); void (*nmi_handler)(struct phy_device *phydev, @@ -509,7 +512,7 @@ static bool nxp_c45_match_ts(struct ptp_header *header, header->domain_number == hwts->domain_number; } -static void nxp_c45_get_extts(struct nxp_c45_phy *priv, +static bool nxp_c45_get_extts(struct nxp_c45_phy *priv, struct timespec64 *extts) { const struct nxp_c45_regmap *regmap = nxp_c45_get_regmap(priv->phydev); @@ -524,6 +527,53 @@ static void nxp_c45_get_extts(struct nxp_c45_phy *priv, regmap->vend1_ext_trg_data_3) << 16; phy_write_mmd(priv->phydev, MDIO_MMD_VEND1, regmap->vend1_ext_trg_ctrl, RING_DONE); + + return true; +} + +static bool tja1120_extts_is_valid(struct phy_device *phydev) +{ + bool valid; + int reg; + + reg = phy_read_mmd(phydev, MDIO_MMD_VEND1, + TJA1120_VEND1_PTP_TRIG_DATA_S); + valid = !!(reg & TJA1120_TS_VALID); + + return valid; +} + +static bool tja1120_get_extts(struct nxp_c45_phy *priv, + struct timespec64 *extts) +{ + const struct nxp_c45_regmap *regmap = nxp_c45_get_regmap(priv->phydev); + struct phy_device *phydev = priv->phydev; + bool more_ts; + bool valid; + u16 reg; + + reg = phy_read_mmd(phydev, MDIO_MMD_VEND1, + regmap->vend1_ext_trg_ctrl); + more_ts = !!(reg & TJA1120_MORE_TS); + + valid = tja1120_extts_is_valid(phydev); + if (!valid) { + if (!more_ts) + goto tja1120_get_extts_out; + + /* Bug workaround for TJA1120 engineering samples: move the new + * timestamp from the FIFO to the buffer. + */ + phy_write_mmd(phydev, MDIO_MMD_VEND1, + regmap->vend1_ext_trg_ctrl, RING_DONE); + valid = tja1120_extts_is_valid(phydev); + if (!valid) + goto tja1120_get_extts_out; + } + + nxp_c45_get_extts(priv, extts); +tja1120_get_extts_out: + return valid; } static void nxp_c45_read_egress_ts(struct nxp_c45_phy *priv, @@ -656,12 +706,12 @@ static long nxp_c45_do_aux_work(struct ptp_clock_info *ptp) bool reschedule = false; struct timespec64 ts; struct sk_buff *skb; - bool txts_valid; + bool ts_valid; u32 ts_raw; while (!skb_queue_empty_lockless(&priv->tx_queue) && poll_txts) { - txts_valid = data->get_egressts(priv, &hwts); - if (unlikely(!txts_valid)) { + ts_valid = data->get_egressts(priv, &hwts); + if (unlikely(!ts_valid)) { /* Still more skbs in the queue */ reschedule = true; break; @@ -683,8 +733,8 @@ static long nxp_c45_do_aux_work(struct ptp_clock_info *ptp) } if (priv->extts) { - nxp_c45_get_extts(priv, &ts); - if (timespec64_compare(&ts, &priv->extts_ts) != 0) { + ts_valid = data->get_extts(priv, &ts); + if (ts_valid && timespec64_compare(&ts, &priv->extts_ts) != 0) { priv->extts_ts = ts; event.index = priv->extts_index; event.type = PTP_CLOCK_EXTTS; @@ -1724,6 +1774,7 @@ static const struct nxp_c45_phy_data tja1103_phy_data = { .ack_ptp_irq = false, .counters_enable = tja1103_counters_enable, .get_egressts = nxp_c45_get_hwtxts, + .get_extts = nxp_c45_get_extts, .ptp_init = tja1103_ptp_init, .ptp_enable = tja1103_ptp_enable, .nmi_handler = tja1103_nmi_handler, @@ -1838,6 +1889,7 @@ static const struct nxp_c45_phy_data tja1120_phy_data = { .ack_ptp_irq = true, .counters_enable = tja1120_counters_enable, .get_egressts = tja1120_get_hwtxts, + .get_extts = tja1120_get_extts, .ptp_init = tja1120_ptp_init, .ptp_enable = tja1120_ptp_enable, .nmi_handler = tja1120_nmi_handler, |