diff options
author | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2019-01-21 08:32:22 -0500 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-02-07 12:11:15 -0500 |
commit | 63635b54e07f646aa1d8e54c96b099162a226f7d (patch) | |
tree | 1cf4e238dd9cbe6c2e49df799acb53d2707b98eb /drivers | |
parent | 81a43d10b8ed0e165bbd1e134ca7261a9608f389 (diff) |
media: v4l2-event: keep track of the timestamp in ns
Internally use ktime_get_ns() to get the timestamp of the event.
Only convert to timespec when interfacing with userspace.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/media/v4l2-core/v4l2-event.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/media/v4l2-core/v4l2-event.c b/drivers/media/v4l2-core/v4l2-event.c index 481e3c65cf97..c46d14c996fc 100644 --- a/drivers/media/v4l2-core/v4l2-event.c +++ b/drivers/media/v4l2-core/v4l2-event.c @@ -52,6 +52,7 @@ static int __v4l2_event_dequeue(struct v4l2_fh *fh, struct v4l2_event *event) kev->event.pending = fh->navailable; *event = kev->event; + event->timestamp = ns_to_timespec(kev->ts); kev->sev->first = sev_pos(kev->sev, 1); kev->sev->in_use--; @@ -103,8 +104,8 @@ static struct v4l2_subscribed_event *v4l2_event_subscribed( return NULL; } -static void __v4l2_event_queue_fh(struct v4l2_fh *fh, const struct v4l2_event *ev, - const struct timespec *ts) +static void __v4l2_event_queue_fh(struct v4l2_fh *fh, + const struct v4l2_event *ev, u64 ts) { struct v4l2_subscribed_event *sev; struct v4l2_kevent *kev; @@ -144,7 +145,7 @@ static void __v4l2_event_queue_fh(struct v4l2_fh *fh, const struct v4l2_event *e if (copy_payload) kev->event.u = ev->u; kev->event.id = ev->id; - kev->event.timestamp = *ts; + kev->ts = ts; kev->event.sequence = fh->sequence; sev->in_use++; list_add_tail(&kev->list, &fh->available); @@ -158,17 +159,17 @@ void v4l2_event_queue(struct video_device *vdev, const struct v4l2_event *ev) { struct v4l2_fh *fh; unsigned long flags; - struct timespec timestamp; + u64 ts; if (vdev == NULL) return; - ktime_get_ts(×tamp); + ts = ktime_get_ns(); spin_lock_irqsave(&vdev->fh_lock, flags); list_for_each_entry(fh, &vdev->fh_list, list) - __v4l2_event_queue_fh(fh, ev, ×tamp); + __v4l2_event_queue_fh(fh, ev, ts); spin_unlock_irqrestore(&vdev->fh_lock, flags); } @@ -177,12 +178,10 @@ EXPORT_SYMBOL_GPL(v4l2_event_queue); void v4l2_event_queue_fh(struct v4l2_fh *fh, const struct v4l2_event *ev) { unsigned long flags; - struct timespec timestamp; - - ktime_get_ts(×tamp); + u64 ts = ktime_get_ns(); spin_lock_irqsave(&fh->vdev->fh_lock, flags); - __v4l2_event_queue_fh(fh, ev, ×tamp); + __v4l2_event_queue_fh(fh, ev, ts); spin_unlock_irqrestore(&fh->vdev->fh_lock, flags); } EXPORT_SYMBOL_GPL(v4l2_event_queue_fh); |