diff options
Diffstat (limited to 'drivers/net/dsa/sja1105/sja1105_ptp.h')
| -rw-r--r-- | drivers/net/dsa/sja1105/sja1105_ptp.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/dsa/sja1105/sja1105_ptp.h b/drivers/net/dsa/sja1105/sja1105_ptp.h index 43480b24f1f0..6408d1158f2d 100644 --- a/drivers/net/dsa/sja1105/sja1105_ptp.h +++ b/drivers/net/dsa/sja1105/sja1105_ptp.h @@ -48,6 +48,19 @@ static inline s64 future_base_time(s64 base_time, s64 cycle_time, s64 now) return base_time + n * cycle_time; } +/* This is not a preprocessor macro because the "ns" argument may or may not be + * s64 at caller side. This ensures it is properly type-cast before div_s64. + */ +static inline s64 ns_to_sja1105_delta(s64 ns) +{ + return div_s64(ns, 200); +} + +static inline s64 sja1105_delta_to_ns(s64 delta) +{ + return delta * 200; +} + struct sja1105_ptp_cmd { u64 startptpcp; /* start toggling PTP_CLK pin */ u64 stopptpcp; /* stop toggling PTP_CLK pin */ |