lkml.org 
[lkml]   [2017]   [Oct]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] HID: hid-multitouch: forward MSC_TIMESTAMP
On Tue, 22 Aug 2017, Nicolas Boichat wrote:

> Computes and forwards the device timestamp according to the
> specification.
>
> Many devices use a 16-bit timestamp field, with a resolution
> of 100us, therefore rolling around very frequently (every
> 6.5 seconds). To make sure there is no ambiguity, the
> timestamp reported to the input stack reset to 0 whenever
> the time between 2 received events is greater than
> MAX_TIMESTAMP_INTERVAL (1 second).
>
> Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
> ---
>
> Inspired from Benjamin Tissoires's patch here:
> https://patchwork.kernel.org/patch/1742181/, and changing the
> logic to resynchronize the timestamps to use received time
> instead of a potentially more fragile difference between
> the 2 deltas.

Applied to for-4.15/multitouch.

--
Jiri Kosina
SUSE Labs

\
 
 \ /
  Last update: 2017-10-05 11:19    [W:0.037 / U:29.780 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site