diff options
| author | Jacob Keller <jacob.e.keller@intel.com> | 2022-11-09 15:09:43 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-11-11 10:58:39 +0000 |
| commit | a29c132f92ed5af6e7116966b7e9899d4c22783c (patch) | |
| tree | e172417a021d91b388a8e1a459ae2cb6b3a389d7 | |
| parent | a45392071ceeebe85622705a1d7500ed434785a7 (diff) | |
ptp: bnxt: convert .adjfreq to .adjfine
When the BNXT_FW_CAP_PTP_RTC flag is not set, the bnxt driver implements
.adjfreq on a cyclecounter in terms of the straightforward "base * ppb / 1
billion" calculation. When BNXT_FW_CAP_PTP_RTC is set, the driver forwards
the ppb value to firmware for configuration.
Convert the driver to the newer .adjfine interface, updating the
cyclecounter calculation to use adjust_by_scaled_ppm to perform the
calculation. Use scaled_ppm_to_ppb when forwarding the correction to
firmware.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Cc: Michael Chan <michael.chan@broadcom.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c | 22 |
1 files changed, 6 insertions, 16 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c index 460cb20599f6..4ec8bba18cdd 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c @@ -205,7 +205,7 @@ static int bnxt_ptp_adjtime(struct ptp_clock_info *ptp_info, s64 delta) return 0; } -static int bnxt_ptp_adjfreq(struct ptp_clock_info *ptp_info, s32 ppb) +static int bnxt_ptp_adjfine(struct ptp_clock_info *ptp_info, long scaled_ppm) { struct bnxt_ptp_cfg *ptp = container_of(ptp_info, struct bnxt_ptp_cfg, ptp_info); @@ -214,23 +214,13 @@ static int bnxt_ptp_adjfreq(struct ptp_clock_info *ptp_info, s32 ppb) int rc = 0; if (!(ptp->bp->fw_cap & BNXT_FW_CAP_PTP_RTC)) { - int neg_adj = 0; - u32 diff; - u64 adj; - - if (ppb < 0) { - neg_adj = 1; - ppb = -ppb; - } - adj = ptp->cmult; - adj *= ppb; - diff = div_u64(adj, 1000000000ULL); - spin_lock_bh(&ptp->ptp_lock); timecounter_read(&ptp->tc); - ptp->cc.mult = neg_adj ? ptp->cmult - diff : ptp->cmult + diff; + ptp->cc.mult = adjust_by_scaled_ppm(ptp->cmult, scaled_ppm); spin_unlock_bh(&ptp->ptp_lock); } else { + s32 ppb = scaled_ppm_to_ppb(scaled_ppm); + rc = hwrm_req_init(bp, req, HWRM_PORT_MAC_CFG); if (rc) return rc; @@ -240,7 +230,7 @@ static int bnxt_ptp_adjfreq(struct ptp_clock_info *ptp_info, s32 ppb) rc = hwrm_req_send(ptp->bp, req); if (rc) netdev_err(ptp->bp->dev, - "ptp adjfreq failed. rc = %d\n", rc); + "ptp adjfine failed. rc = %d\n", rc); } return rc; } @@ -769,7 +759,7 @@ static const struct ptp_clock_info bnxt_ptp_caps = { .n_per_out = 0, .n_pins = 0, .pps = 0, - .adjfreq = bnxt_ptp_adjfreq, + .adjfine = bnxt_ptp_adjfine, .adjtime = bnxt_ptp_adjtime, .do_aux_work = bnxt_ptp_ts_aux_work, .gettimex64 = bnxt_ptp_gettimex, |