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authorBen Hutchings <bhutchings@solarflare.com>2013-12-05 17:24:06 +0000
committerBen Hutchings <bhutchings@solarflare.com>2013-12-06 22:27:51 +0000
commitcd6fe65e923175e4f2e9fb585b1d78c6bf580fc6 (patch)
treee0d930a11c577fcab34932e37f3a292de28c95ee /drivers/net/ethernet/sfc/ptp.c
parent2ea4dc28a5bcec408e01a8772763871638a5ec79 (diff)
downloadlinux-cd6fe65e923175e4f2e9fb585b1d78c6bf580fc6.tar.bz2
sfc: Maintain current frequency adjustment when applying a time offset
There is a single MCDI PTP operation for setting the frequency adjustment and applying a time offset to the hardware clock. When applying a time offset we should not change the frequency adjustment. These two operations can now be requested separately but this requires a flash firmware update. Keep using the single operation, but remember and repeat the previous frequency adjustment. Fixes: 7c236c43b838 ('sfc: Add support for IEEE-1588 PTP') Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Diffstat (limited to 'drivers/net/ethernet/sfc/ptp.c')
-rw-r--r--drivers/net/ethernet/sfc/ptp.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c
index 9bd99edf3f95..3dd39dcfe36b 100644
--- a/drivers/net/ethernet/sfc/ptp.c
+++ b/drivers/net/ethernet/sfc/ptp.c
@@ -1426,7 +1426,7 @@ static int efx_phc_adjfreq(struct ptp_clock_info *ptp, s32 delta)
if (rc != 0)
return rc;
- ptp_data->current_adjfreq = delta;
+ ptp_data->current_adjfreq = adjustment_ns;
return 0;
}
@@ -1441,7 +1441,7 @@ static int efx_phc_adjtime(struct ptp_clock_info *ptp, s64 delta)
MCDI_SET_DWORD(inbuf, PTP_IN_OP, MC_CMD_PTP_OP_ADJUST);
MCDI_SET_DWORD(inbuf, PTP_IN_PERIPH_ID, 0);
- MCDI_SET_QWORD(inbuf, PTP_IN_ADJUST_FREQ, 0);
+ MCDI_SET_QWORD(inbuf, PTP_IN_ADJUST_FREQ, ptp_data->current_adjfreq);
MCDI_SET_DWORD(inbuf, PTP_IN_ADJUST_SECONDS, (u32)delta_ts.tv_sec);
MCDI_SET_DWORD(inbuf, PTP_IN_ADJUST_NANOSECONDS, (u32)delta_ts.tv_nsec);
return efx_mcdi_rpc(efx, MC_CMD_PTP, inbuf, sizeof(inbuf),