linux-kernel - Re: [rtc-linux] [PATCH/RFC 0/5] Generic RTC class driver

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Message-Id: <1235511327.18632.73.camel@macbook.infradead.org>
Date:	Wed, 25 Feb 2009 06:35:27 +0900
From:	David Woodhouse <dwmw2@...radead.org>
To:	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
Cc:	Alessandro Zummo <alessandro.zummo@...ertech.it>,
	rtc-linux@...glegroups.com, Richard Zidlicky <rz@...ux-m68k.org>,
	linux-parisc@...r.kernel.org,
	Linux Kernel Development <linux-kernel@...r.kernel.org>,
	David@...abs.org, Kyle McMartin <kyle@...artin.ca>,
	Linux/PPC Development <linuxppc-dev@...abs.org>,
	Linux/m68k <linux-m68k@...ts.linux-m68k.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: Re: [rtc-linux] [PATCH/RFC 0/5] Generic RTC class driver

On Mon, 2009-02-23 at 13:34 +0100, Geert Uytterhoeven wrote:
> >    my opinion on this kind of stuff is that I want to avoid the layering
> >  of implementations under the rtc subsystem. I'd rather prefer that each
> >  rtc device had its own driver. 
> >  
> >   I've made error in the past, by accepting such kind of drivers, and
> >  would like to avoid that it happens again.
> 
> So you want us to kill the ppc_md.[gs]et_rtc_time() [ppc], mach_hwclk() [m68k],
> mach_gettod() [m68knommu] (and probably a few other) abstractions, and move all
> RTC code out of arch/ into seperate drivers under drivers/rtc/ instead?

That's the ideal... although did we get NTP sync working again yet?

The rtc-ppc driver was intended as a short-term workaround so that we
can enable the generic RTC class (which was required for PA Semi
Electra, iirc), and still have stuff work on other platforms.

-- 
David Woodhouse                            Open Source Technology Centre
David.Woodhouse@...el.com                              Intel Corporation

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