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media: usbvision: use u64 for the timestamp internally

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Just like vb2 does, use u64 internally to store the timestamps
of the buffers. Only convert to timeval 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>
This commit is contained in:
Hans Verkuil 2019-01-21 08:32:27 -05:00 committed by Mauro Carvalho Chehab
parent bbd217a44a
commit 459d2a5d1e
3 changed files with 4 additions and 4 deletions
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2
drivers/media/usb/usbvision/usbvision-core.c
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@ -1160,7 +1160,7 @@ static void usbvision_parse_data(struct usb_usbvision *usbvision)
if (newstate == parse_state_next_frame) {
frame->grabstate = frame_state_done;
v4l2_get_timestamp(&(frame->timestamp));
frame->ts = ktime_get_ns();
frame->sequence = usbvision->frame_num;
spin_lock_irqsave(&usbvision->queue_lock, lock_flags);

4
drivers/media/usb/usbvision/usbvision-video.c
View File

@ -706,7 +706,7 @@ static int vidioc_querybuf(struct file *file,
vb->length = usbvision->curwidth *
usbvision->curheight *
usbvision->palette.bytes_per_pixel;
vb->timestamp = usbvision->frame[vb->index].timestamp;
vb->timestamp = ns_to_timeval(usbvision->frame[vb->index].ts);
vb->sequence = usbvision->frame[vb->index].sequence;
return 0;
}
@ -775,7 +775,7 @@ static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
vb->index = f->index;
vb->sequence = f->sequence;
vb->timestamp = f->timestamp;
vb->timestamp = ns_to_timeval(f->ts);
vb->field = V4L2_FIELD_NONE;
vb->bytesused = f->scanlength;

2
drivers/media/usb/usbvision/usbvision.h
View File

@ -316,7 +316,7 @@ struct usbvision_frame {
long bytes_read; /* amount of scanlength that has been read from data */
struct usbvision_v4l2_format_st v4l2_format; /* format the user needs*/
int v4l2_linesize; /* bytes for one videoline*/
struct timeval timestamp;
u64 ts;
int sequence; /* How many video frames we send to user */
};