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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2014-03-23 16:25:09 +0100
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2014-05-09 14:24:29 +0200
commitd3ebe920e60879ae5e97284ba6e01603df6d920e (patch)
tree8038136e36c51b6fb6bf96c6afd21b24715abd48
parentc9eaa447e77efe77b7fa4c953bd62de8297fd6c5 (diff)
usb: gadget: uvc: Switch to monotonic clock for buffer timestamps
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>
-rw-r--r--drivers/usb/gadget/uvc_queue.c9
1 files changed, 2 insertions, 7 deletions
diff --git a/drivers/usb/gadget/uvc_queue.c b/drivers/usb/gadget/uvc_queue.c
index 0bb5d50075de..9ac4ffe19014 100644
--- a/drivers/usb/gadget/uvc_queue.c
+++ b/drivers/usb/gadget/uvc_queue.c
@@ -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);

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