diff options
| -rw-r--r-- | drivers/net/ethernet/freescale/fec.h | 5 | ||||
| -rw-r--r-- | drivers/net/ethernet/freescale/fec_main.c | 18 | ||||
| -rw-r--r-- | drivers/net/ethernet/freescale/fec_ptp.c | 33 |
3 files changed, 41 insertions, 15 deletions
diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h index 9f7fa64..ee41d98 100644 --- a/drivers/net/ethernet/freescale/fec.h +++ b/drivers/net/ethernet/freescale/fec.h @@ -275,6 +275,9 @@ struct fec_enet_private { struct clk *clk_enet_out; struct clk *clk_ptp; + bool ptp_clk_on; + struct mutex ptp_clk_mutex; + /* The saved address of a sent-in-place packet/buffer, for skfree(). */ unsigned char *tx_bounce[TX_RING_SIZE]; struct sk_buff *tx_skbuff[TX_RING_SIZE]; @@ -335,7 +338,7 @@ struct fec_enet_private { u32 cycle_speed; int hwts_rx_en; int hwts_tx_en; - struct timer_list time_keep; + struct delayed_work time_keep; struct regulator *reg_phy; }; diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index 4f87dff..89355a7 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -1611,17 +1611,27 @@ static int fec_enet_clk_enable(struct net_device *ndev, bool enable) goto failed_clk_enet_out; } if (fep->clk_ptp) { + mutex_lock(&fep->ptp_clk_mutex); ret = clk_prepare_enable(fep->clk_ptp); - if (ret) + if (ret) { + mutex_unlock(&fep->ptp_clk_mutex); goto failed_clk_ptp; + } else { + fep->ptp_clk_on = true; + } + mutex_unlock(&fep->ptp_clk_mutex); } } else { clk_disable_unprepare(fep->clk_ahb); clk_disable_unprepare(fep->clk_ipg); if (fep->clk_enet_out) clk_disable_unprepare(fep->clk_enet_out); - if (fep->clk_ptp) + if (fep->clk_ptp) { + mutex_lock(&fep->ptp_clk_mutex); clk_disable_unprepare(fep->clk_ptp); + fep->ptp_clk_on = false; + mutex_unlock(&fep->ptp_clk_mutex); + } } return 0; @@ -2625,6 +2635,8 @@ fec_probe(struct platform_device *pdev) if (IS_ERR(fep->clk_enet_out)) fep->clk_enet_out = NULL; + fep->ptp_clk_on = false; + mutex_init(&fep->ptp_clk_mutex); fep->clk_ptp = devm_clk_get(&pdev->dev, "ptp"); fep->bufdesc_ex = pdev->id_entry->driver_data & FEC_QUIRK_HAS_BUFDESC_EX; @@ -2715,10 +2727,10 @@ fec_drv_remove(struct platform_device *pdev) struct net_device *ndev = platform_get_drvdata(pdev); struct fec_enet_private *fep = netdev_priv(ndev); + cancel_delayed_work_sync(&fep->time_keep); cancel_work_sync(&fep->tx_timeout_work); unregister_netdev(ndev); fec_enet_mii_remove(fep); - del_timer_sync(&fep->time_keep); if (fep->reg_phy) regulator_disable(fep->reg_phy); if (fep->ptp_clock) diff --git a/drivers/net/ethernet/freescale/fec_ptp.c b/drivers/net/ethernet/freescale/fec_ptp.c index 82386b2..cca3617 100644 --- a/drivers/net/ethernet/freescale/fec_ptp.c +++ b/drivers/net/ethernet/freescale/fec_ptp.c @@ -245,12 +245,20 @@ static int fec_ptp_settime(struct ptp_clock_info *ptp, u64 ns; unsigned long flags; + mutex_lock(&fep->ptp_clk_mutex); + /* Check the ptp clock */ + if (!fep->ptp_clk_on) { + mutex_unlock(&fep->ptp_clk_mutex); + return -EINVAL; + } + ns = ts->tv_sec * 1000000000ULL; ns += ts->tv_nsec; spin_lock_irqsave(&fep->tmreg_lock, flags); timecounter_init(&fep->tc, &fep->cc, ns); spin_unlock_irqrestore(&fep->tmreg_lock, flags); + mutex_unlock(&fep->ptp_clk_mutex); return 0; } @@ -338,17 +346,22 @@ int fec_ptp_get(struct net_device *ndev, struct ifreq *ifr) * fec_time_keep - call timecounter_read every second to avoid timer overrun * because ENET just support 32bit counter, will timeout in 4s */ -static void fec_time_keep(unsigned long _data) +static void fec_time_keep(struct work_struct *work) { - struct fec_enet_private *fep = (struct fec_enet_private *)_data; + struct delayed_work *dwork = to_delayed_work(work); + struct fec_enet_private *fep = container_of(dwork, struct fec_enet_private, time_keep); u64 ns; unsigned long flags; - spin_lock_irqsave(&fep->tmreg_lock, flags); - ns = timecounter_read(&fep->tc); - spin_unlock_irqrestore(&fep->tmreg_lock, flags); + mutex_lock(&fep->ptp_clk_mutex); + if (fep->ptp_clk_on) { + spin_lock_irqsave(&fep->tmreg_lock, flags); + ns = timecounter_read(&fep->tc); + spin_unlock_irqrestore(&fep->tmreg_lock, flags); + } + mutex_unlock(&fep->ptp_clk_mutex); - mod_timer(&fep->time_keep, jiffies + HZ); + schedule_delayed_work(&fep->time_keep, HZ); } /** @@ -386,15 +399,13 @@ void fec_ptp_init(struct platform_device *pdev) fec_ptp_start_cyclecounter(ndev); - init_timer(&fep->time_keep); - fep->time_keep.data = (unsigned long)fep; - fep->time_keep.function = fec_time_keep; - fep->time_keep.expires = jiffies + HZ; - add_timer(&fep->time_keep); + INIT_DELAYED_WORK(&fep->time_keep, fec_time_keep); fep->ptp_clock = ptp_clock_register(&fep->ptp_caps, &pdev->dev); if (IS_ERR(fep->ptp_clock)) { fep->ptp_clock = NULL; pr_err("ptp_clock_register failed\n"); } + + schedule_delayed_work(&fep->time_keep, HZ); } |