linux-kernel - Re: [PATCH 5/6] Clocklib: Use correct clock for IrDA on pxa

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Date:	Wed, 9 Apr 2008 20:09:16 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Russell King <rmk+lkml@....linux.org.uk>
Cc:	Dmitry <dbaryshkov@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, haavard.skinnemoen@...el.com,
	lethal@...ux-sh.org, philipp.zabel@...il.com, pavel@....cz,
	tony@...mide.com, paul@...an.com
Subject: Re: [PATCH 5/6] Clocklib: Use correct clock for IrDA on pxa

> TBH, I'm not sure what the status of the kernel-side IrDA drivers are -
> maybe this is an issue which Samuel Ortiz could tackle if he has time.
> That would solve this issue on both 8250-based ports as well as SA11x0
> and PXA platforms.

I think "in need of much love" would be a polite way to put it and some
of them are probably going to break soon as they pretend to be tty
devices but fake it badly.

> Basically what I'm thinking is a serial_core function which could be
> called to say "I'm an IrDA driver, and I think I should be using the
> serial port located <here>, please give me control of it" and it'd
> pass over the various parameters including the struct device for it.
> Or something like that.

It's called a line discipline, we've had them for many years. We may need
a way for ldiscs and drivers to co-operate a bit more but these days we
support proper buffering and arbitary baud rates (except on a few
platforms whose maintainers are not paying attention ;)).

So I don't actually see why the FIR layer can't become a good citizen.

Alan
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