diff options
| author | Hariprasad Kelam <hkelam@marvell.com> | 2023-09-12 23:21:16 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-09-15 10:35:07 +0100 |
| commit | 35293cb392e6823e35917229c2a9ea01f3176d96 (patch) | |
| tree | 5a2030b7f7c2a8fd11be6537e6f2a20a7b9b908a /drivers/net/ethernet/marvell/octeontx2/nic | |
| parent | e73d5fb75d67538b13fe04d14a55f32ea4efe227 (diff) | |
octeontx2-pf: Enable PTP PPS output support
PTP block supports generating PPS output signal on GPIO pin. This patch
adds the support in the PTP PHC driver using standard periodic output
interface.
User can enable/disable/configure PPS by writing to the below sysfs entry
echo perout.index start.sec start.nsec period.sec period.nsec >
/sys/class/ptp/ptp0/period
Example to generate 50% duty cycle PPS signal:
echo 0 0 0 0 500000000 > /sys/class/ptp/ptp0/period
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: Sai Krishna <saikrishnag@marvell.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/marvell/octeontx2/nic')
| -rw-r--r-- | drivers/net/ethernet/marvell/octeontx2/nic/otx2_ptp.c | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ptp.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ptp.c index 3a72b0793d4a..63130ba37e9d 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ptp.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ptp.c @@ -175,7 +175,7 @@ static int ptp_set_thresh(struct otx2_ptp *ptp, u64 thresh) return otx2_sync_mbox_msg(&ptp->nic->mbox); } -static int ptp_extts_on(struct otx2_ptp *ptp, int on) +static int ptp_pps_on(struct otx2_ptp *ptp, int on, u64 period) { struct ptp_req *req; @@ -186,8 +186,9 @@ static int ptp_extts_on(struct otx2_ptp *ptp, int on) if (!req) return -ENOMEM; - req->op = PTP_OP_EXTTS_ON; - req->extts_on = on; + req->op = PTP_OP_PPS_ON; + req->pps_on = on; + req->period = period; return otx2_sync_mbox_msg(&ptp->nic->mbox); } @@ -276,8 +277,8 @@ static int otx2_ptp_verify_pin(struct ptp_clock_info *ptp, unsigned int pin, switch (func) { case PTP_PF_NONE: case PTP_PF_EXTTS: - break; case PTP_PF_PEROUT: + break; case PTP_PF_PHYSYNC: return -1; } @@ -340,6 +341,7 @@ static int otx2_ptp_enable(struct ptp_clock_info *ptp_info, { struct otx2_ptp *ptp = container_of(ptp_info, struct otx2_ptp, ptp_info); + u64 period = 0; int pin; if (!ptp->nic) @@ -351,12 +353,24 @@ static int otx2_ptp_enable(struct ptp_clock_info *ptp_info, rq->extts.index); if (pin < 0) return -EBUSY; - if (on) { - ptp_extts_on(ptp, on); + if (on) schedule_delayed_work(&ptp->extts_work, msecs_to_jiffies(200)); - } else { - ptp_extts_on(ptp, on); + else cancel_delayed_work_sync(&ptp->extts_work); + + return 0; + case PTP_CLK_REQ_PEROUT: + if (rq->perout.flags) + return -EOPNOTSUPP; + + if (rq->perout.index >= ptp_info->n_pins) + return -EINVAL; + if (on) { + period = rq->perout.period.sec * NSEC_PER_SEC + + rq->perout.period.nsec; + ptp_pps_on(ptp, on, period); + } else { + ptp_pps_on(ptp, on, period); } return 0; default: @@ -411,6 +425,7 @@ int otx2_ptp_init(struct otx2_nic *pfvf) .name = "OcteonTX2 PTP", .max_adj = 1000000000ull, .n_ext_ts = 1, + .n_per_out = 1, .n_pins = 1, .pps = 0, .pin_config = &ptp_ptr->extts_config, |