On Thu November 15 2012 23:06:45 Sakari Ailus wrote:
> v4l2_get_timestamp() produces a monotonic timestamp but unlike
> ktime_get_ts(), it uses struct timeval instead of struct timespec, saving
> the drivers the conversion job when getting timestamps for v4l2_buffer's
> timestamp field.
>
> Signed-off-by: Sakari Ailus <sakari.ai...@iki.fi>
> ---
> drivers/media/v4l2-core/v4l2-common.c | 10 ++++++++++
> include/media/v4l2-common.h | 2 ++
> 2 files changed, 12 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/media/v4l2-core/v4l2-common.c
> b/drivers/media/v4l2-core/v4l2-common.c
> index 380ddd8..614316f 100644
> --- a/drivers/media/v4l2-core/v4l2-common.c
> +++ b/drivers/media/v4l2-core/v4l2-common.c
> @@ -978,3 +978,13 @@ const struct v4l2_frmsize_discrete
> *v4l2_find_nearest_format(
> return best;
> }
> EXPORT_SYMBOL_GPL(v4l2_find_nearest_format);
> +
> +void v4l2_get_timestamp(struct timeval *tv)
> +{
> + struct timespec ts;
> +
> + ktime_get_ts(&ts);
> + tv->tv_sec = ts.tv_sec;
> + tv->tv_usec = ts.tv_nsec / NSEC_PER_USEC;
> +}
> +EXPORT_SYMBOL_GPL(v4l2_get_timestamp);
> diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h
> index 1a0b2db..ec7c9c0 100644
> --- a/include/media/v4l2-common.h
> +++ b/include/media/v4l2-common.h
> @@ -225,4 +225,6 @@ bool v4l2_detect_gtf(unsigned frame_height, unsigned
> hfreq, unsigned vsync,
>
> struct v4l2_fract v4l2_calc_aspect_ratio(u8 hor_landscape, u8 vert_portrait);
>
> +void v4l2_get_timestamp(struct timeval *tv);
> +
> #endif /* V4L2_COMMON_H_ */
>
Acked-by: Hans Verkuil <hans.verk...@cisco.com>
Regards,
Hans
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