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usb: gadget: uvc: Switch to monotonic clock for buffer timestamps

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The wall time clock isn't useful for applications as it can jump around
due to time adjustement. Switch to the monotonic clock.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Laurent Pinchart 2014-03-23 16:25:09 +01:00 committed by Felipe Balbi
parent 79cb5b533a
commit 16bf900f50
1 changed files with 2 additions and 7 deletions
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9
drivers/usb/gadget/uvc_queue.c
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@ -20,6 +20,7 @@
#include <linux/vmalloc.h>
#include <linux/wait.h>
#include <media/v4l2-common.h>
#include <media/videobuf2-vmalloc.h>
#include "uvc.h"
@ -379,14 +380,8 @@ static struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
else
nextbuf = NULL;
/*
* FIXME: with videobuf2, the sequence number or timestamp fields
* are valid only for video capture devices and the UVC gadget usually
* is a video output device. Keeping these until the specs are clear on
* this aspect.
*/
buf->buf.v4l2_buf.sequence = queue->sequence++;
do_gettimeofday(&buf->buf.v4l2_buf.timestamp);
v4l2_get_timestamp(&buf->buf.v4l2_buf.timestamp);
vb2_set_plane_payload(&buf->buf, 0, buf->bytesused);
vb2_buffer_done(&buf->buf, VB2_BUF_STATE_DONE);