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List:       linux-can
Subject:    Re: flexcan: use hardware timestamp
From:       wg <wg () grandegger ! com>
Date:       2013-04-29 18:42:35
Message-ID: 05b3a72eaa4694232ba34598c325a345 () grandegger ! com
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On Mon, 29 Apr 2013 20:00:17 +0200, Marc Kleine-Budde <mkl@pengutronix.de>
wrote:
> On 04/29/2013 07:58 PM, Marc Kleine-Budde wrote:
>> On 04/29/2013 07:33 PM, Sven Schuchmann wrote:
>>> Hello,
>>> I was wondering if the flexcan driver uses the hardware timestamp
>>> and by looking at the code under drivers/net/can/flexcan.c and did
>>> not find any access to those registers.
>>>  
>>> is there a special reason for this?
>> 
>> Yes, no one has implemented it yet :)
>> 
>>> If not, I would try implementing to use skb_shared_hwtstamps...
> 
> I mean, go ahead implement hardware timestamps, but I haven't checked if
> skb_shared_hwtstamps is the correct interface.

Looks good according to:

http://lxr.linux.no/#linux+v3.9/Documentation/networking/timestamping.txt
http://lxr.linux.no/#linux+v3.9/Documentation/networking/timestamping/timestamping.c

Wolfgang,
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