ptp_ocp: make ptp_ocp driver compatible with PTP_EXTTS_REQUEST2

Originally ptp_ocp driver was not strictly checking flags for external
timestamper and was always activating rising edge timestamping as it's
the only supported mode. Recent changes to ptp made it incompatible with
PTP_EXTTS_REQUEST2 ioctl. Adjust ptp_clock_info to provide supported
mode and be compatible with new infra.

While at here remove explicit check of periodic output flags from the
driver and provide supported flags for ptp core to check.

Signed-off-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20250918131146.651468-1-vadim.fedorenko@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c
index 4e1286ce05c9afa08fb1d4f8b23d76d1e5e412b4..794ec6e71990c8917925bd3c9c91613c2f0e753d 100644 (file)
--- a/drivers/ptp/ptp_ocp.c
+++ b/drivers/ptp/ptp_ocp.c
@@ -1485,6 +1485,8 @@ static const struct ptp_clock_info ptp_ocp_clock_info = {
        .pps            = true,
        .n_ext_ts       = 6,
        .n_per_out      = 5,
+       .supported_extts_flags = PTP_STRICT_FLAGS | PTP_RISING_EDGE,
+       .supported_perout_flags = PTP_PEROUT_DUTY_CYCLE | PTP_PEROUT_PHASE,
 };
 
 static void
@@ -2095,10 +2097,6 @@ ptp_ocp_signal_from_perout(struct ptp_ocp *bp, int gen,
 {
        struct ptp_ocp_signal s = { };
 
-       if (req->flags & ~(PTP_PEROUT_DUTY_CYCLE |
-                          PTP_PEROUT_PHASE))
-               return -EOPNOTSUPP;
-
        s.polarity = bp->signal[gen].polarity;
        s.period = ktime_set(req->period.sec, req->period.nsec);
        if (!s.period)