From: Vincent Cheng vincent.cheng.xh@renesas.com
Add adjust_phase to ptp_clock_caps capability to allow user to query if a PHC driver supports adjust phase with ioctl PTP_CLOCK_GETCAPS command.
Signed-off-by: Vincent Cheng vincent.cheng.xh@renesas.com Reviewed-by: Richard Cochran richardcochran@gmail.com --- drivers/ptp/ptp_chardev.c | 1 + include/uapi/linux/ptp_clock.h | 4 +++- tools/testing/selftests/ptp/testptp.c | 6 ++++-- 3 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/ptp/ptp_chardev.c b/drivers/ptp/ptp_chardev.c index 93d574f..375cd6e 100644 --- a/drivers/ptp/ptp_chardev.c +++ b/drivers/ptp/ptp_chardev.c @@ -136,6 +136,7 @@ long ptp_ioctl(struct posix_clock *pc, unsigned int cmd, unsigned long arg) caps.pps = ptp->info->pps; caps.n_pins = ptp->info->n_pins; caps.cross_timestamping = ptp->info->getcrosststamp != NULL; + caps.adjust_phase = ptp->info->adjphase != NULL; if (copy_to_user((void __user *)arg, &caps, sizeof(caps))) err = -EFAULT; break; diff --git a/include/uapi/linux/ptp_clock.h b/include/uapi/linux/ptp_clock.h index 9dc9d00..ff070aa 100644 --- a/include/uapi/linux/ptp_clock.h +++ b/include/uapi/linux/ptp_clock.h @@ -89,7 +89,9 @@ struct ptp_clock_caps { int n_pins; /* Number of input/output pins. */ /* Whether the clock supports precise system-device cross timestamps */ int cross_timestamping; - int rsv[13]; /* Reserved for future use. */ + /* Whether the clock supports adjust phase */ + int adjust_phase; + int rsv[12]; /* Reserved for future use. */ };
struct ptp_extts_request { diff --git a/tools/testing/selftests/ptp/testptp.c b/tools/testing/selftests/ptp/testptp.c index c0dd102..da7a9dd 100644 --- a/tools/testing/selftests/ptp/testptp.c +++ b/tools/testing/selftests/ptp/testptp.c @@ -269,14 +269,16 @@ int main(int argc, char *argv[]) " %d programmable periodic signals\n" " %d pulse per second\n" " %d programmable pins\n" - " %d cross timestamping\n", + " %d cross timestamping\n" + " %d adjust_phase\n", caps.max_adj, caps.n_alarm, caps.n_ext_ts, caps.n_per_out, caps.pps, caps.n_pins, - caps.cross_timestamping); + caps.cross_timestamping, + caps.adjust_phase); } }