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Date: Fri, 11 Apr 2008 09:28:40 +0100
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Rodolfo Giometti <giometti@enneenne.com>
Cc: linux-kernel@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>,
       David Woodhouse <dwmw2@infradead.org>, Dave Jones <davej@redhat.com>,
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       Randy Dunlap <randy.dunlap@oracle.com>,
       Kay Sievers <kay.sievers@vrfy.org>
Subject: Re: [PATCH 5/7] PPS: serial clients support.
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> How can I do that? From a serial device I just need the IRQ time
> arrival, no other data at all. How a ldisc can help me in this task?

At the moment you can't. That needs fixing. Most of the infrastructure is
there but not all of it.

> This patch adds PPS support just for UARTs, other devices should
> provide their own support by using the new provided API. :)

I do not want PPS code adding to every single serial driver. That way
lies madness. We do it once, and in the right layer. I'll take a further
look at it after the tty->ops patch is merged. At that point we'll be in
a good position to add the needed ops/callbacks.

Alan