diff options
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c index 0989e2bb6ee3..b164ae22e35f 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c @@ -9,6 +9,7 @@ *******************************************************************************/ #include "stmmac.h" #include "stmmac_ptp.h" +#include "dwmac4.h" /** * stmmac_adjust_freq @@ -165,6 +166,36 @@ static int stmmac_enable(struct ptp_clock_info *ptp, return ret; } +/** + * stmmac_get_syncdevicetime + * @device: current device time + * @system: system counter value read synchronously with device time + * @ctx: context provided by timekeeping code + * Description: Read device and system clock simultaneously and return the + * corrected clock values in ns. + **/ +static int stmmac_get_syncdevicetime(ktime_t *device, + struct system_counterval_t *system, + void *ctx) +{ + struct stmmac_priv *priv = (struct stmmac_priv *)ctx; + + if (priv->plat->crosststamp) + return priv->plat->crosststamp(device, system, ctx); + else + return -EOPNOTSUPP; +} + +static int stmmac_getcrosststamp(struct ptp_clock_info *ptp, + struct system_device_crosststamp *xtstamp) +{ + struct stmmac_priv *priv = + container_of(ptp, struct stmmac_priv, ptp_clock_ops); + + return get_device_system_crosststamp(stmmac_get_syncdevicetime, + priv, NULL, xtstamp); +} + /* structure describing a PTP hardware clock */ static struct ptp_clock_info stmmac_ptp_clock_ops = { .owner = THIS_MODULE, @@ -180,6 +211,7 @@ static struct ptp_clock_info stmmac_ptp_clock_ops = { .gettime64 = stmmac_get_time, .settime64 = stmmac_set_time, .enable = stmmac_enable, + .getcrosststamp = stmmac_getcrosststamp, }; /** @@ -192,6 +224,9 @@ void stmmac_ptp_register(struct stmmac_priv *priv) { int i; + if (priv->plat->ptp_clk_freq_config) + priv->plat->ptp_clk_freq_config(priv); + for (i = 0; i < priv->dma_cap.pps_out_num; i++) { if (i >= STMMAC_PPS_MAX) break; |