diff options
| -rw-r--r-- | drivers/net/ethernet/freescale/fec.h | 6 | ||||
| -rw-r--r-- | drivers/net/ethernet/freescale/fec_main.c | 11 | ||||
| -rw-r--r-- | drivers/net/ethernet/freescale/fec_ptp.c | 30 |
3 files changed, 46 insertions, 1 deletions
diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h index a8fbcada6b01..cb58696ec03b 100644 --- a/drivers/net/ethernet/freescale/fec.h +++ b/drivers/net/ethernet/freescale/fec.h @@ -691,10 +691,16 @@ struct fec_enet_private { /* XDP BPF Program */ struct bpf_prog *xdp_prog; + struct { + int pps_enable; + } ptp_saved_state; + u64 ethtool_stats[]; }; void fec_ptp_init(struct platform_device *pdev, int irq_idx); +void fec_ptp_restore_state(struct fec_enet_private *fep); +void fec_ptp_save_state(struct fec_enet_private *fep); void fec_ptp_stop(struct platform_device *pdev); void fec_ptp_start_cyclecounter(struct net_device *ndev); int fec_ptp_set(struct net_device *ndev, struct kernel_hwtstamp_config *config, diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index 5604a47b35b2..81e317352158 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -1058,6 +1058,8 @@ fec_restart(struct net_device *ndev) u32 rcntl = OPT_FRAME_SIZE | 0x04; u32 ecntl = FEC_ECR_ETHEREN; + fec_ptp_save_state(fep); + /* Whack a reset. We should wait for this. * For i.MX6SX SOC, enet use AXI bus, we use disable MAC * instead of reset MAC itself. @@ -1225,8 +1227,10 @@ fec_restart(struct net_device *ndev) writel(ecntl, fep->hwp + FEC_ECNTRL); fec_enet_active_rxring(ndev); - if (fep->bufdesc_ex) + if (fep->bufdesc_ex) { fec_ptp_start_cyclecounter(ndev); + fec_ptp_restore_state(fep); + } /* Enable interrupts we wish to service */ if (fep->link) @@ -1317,6 +1321,8 @@ fec_stop(struct net_device *ndev) netdev_err(ndev, "Graceful transmit stop did not complete!\n"); } + fec_ptp_save_state(fep); + /* Whack a reset. We should wait for this. * For i.MX6SX SOC, enet use AXI bus, we use disable MAC * instead of reset MAC itself. @@ -1347,6 +1353,9 @@ fec_stop(struct net_device *ndev) val = readl(fep->hwp + FEC_ECNTRL); val |= FEC_ECR_EN1588; writel(val, fep->hwp + FEC_ECNTRL); + + fec_ptp_start_cyclecounter(ndev); + fec_ptp_restore_state(fep); } } diff --git a/drivers/net/ethernet/freescale/fec_ptp.c b/drivers/net/ethernet/freescale/fec_ptp.c index 2e4f3e1782a2..8027b532de07 100644 --- a/drivers/net/ethernet/freescale/fec_ptp.c +++ b/drivers/net/ethernet/freescale/fec_ptp.c @@ -770,6 +770,36 @@ void fec_ptp_init(struct platform_device *pdev, int irq_idx) schedule_delayed_work(&fep->time_keep, HZ); } +void fec_ptp_save_state(struct fec_enet_private *fep) +{ + unsigned long flags; + + spin_lock_irqsave(&fep->tmreg_lock, flags); + + fep->ptp_saved_state.pps_enable = fep->pps_enable; + + spin_unlock_irqrestore(&fep->tmreg_lock, flags); +} + +/* Restore PTP functionality after a reset */ +void fec_ptp_restore_state(struct fec_enet_private *fep) +{ + unsigned long flags; + + spin_lock_irqsave(&fep->tmreg_lock, flags); + + /* Reset turned it off, so adjust our status flag */ + fep->pps_enable = 0; + + spin_unlock_irqrestore(&fep->tmreg_lock, flags); + + /* Restart PPS if needed */ + if (fep->ptp_saved_state.pps_enable) { + /* Re-enable PPS */ + fec_ptp_enable_pps(fep, 1); + } +} + void fec_ptp_stop(struct platform_device *pdev) { struct net_device *ndev = platform_get_drvdata(pdev); |