linux-kernel - Re: [PATCH 7/7] powerpc/ps3: Add rtc-ps3

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Date:	Tue, 10 Mar 2009 10:21:14 +0100 (CET)
From:	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
To:	Geoff Levand <geoffrey.levand@...sony.com>
cc:	Alessandro Zummo <alessandro.zummo@...ertech.it>,
	Kyle McMartin <kyle@...artin.ca>, rtc-linux@...glegroups.com,
	linux-parisc@...r.kernel.org, linuxppc-dev@...abs.org,
	linux-m68k@...r.kernel.org, linux-kernel@...r.kernel.org,
	Paul Mundt <lethal@...ux-sh.org>,
	Dann Frazier <dannf@...nf.org>
Subject: Re: [PATCH 7/7] powerpc/ps3: Add rtc-ps3

On Mon, 9 Mar 2009, Geoff Levand wrote:
> On 03/09/2009 06:26 AM, Geert Uytterhoeven wrote:
> > Create a real RTC driver for PS3, and unhook the deprecated
> > ppc_md.[gs]et_rtc_time.
> 
> >  8 files changed, 132 insertions(+), 18 deletions(-)
> 
> Sorry, I hadn't been following the discussion closely, but
> could you explain why we are going from a generic framework
> where we hook in our platform specific part to a totally
> independent driver that has such an increase in code size.

Alessandro prefers not to have generic RTC drivers on top of some other
abstraction, but wants platform/chip-specific drivers under drivers/rtc/
instead. The goal is to convert all RTC drivers buried in platform code
to separate RTC drivers.

(Alessandro, please correct me if I'm wrong)

> Why couldn't you fix the generic part so that udev could
> load it automatically?

BTW, I also fixed the generic part, which is now called rtc-generic and
autoloaded (patch 4).

> I much prefer to have this code in the platform support
> code as it was.  It is much more effort (a pain) to maintain
> a separate driver were I have to cater to a subsystem's
> maintainer, and with this rtc it seems everyone who was
> using the generic PPC driver will need to do the same.

They can keep on using rtc-generic for now (patch 6).

If you do not want rtc-ps3, you can nak it, and keep on using rtc-generic :-)
But please consider before doing that...

With kind regards,

Geert Uytterhoeven
Software Architect

Sony Techsoft Centre Europe
The Corporate Village · Da Vincilaan 7-D1 · B-1935 Zaventem · Belgium

Phone:    +32 (0)2 700 8453
Fax:      +32 (0)2 700 8622
E-mail:   Geert.Uytterhoeven@...ycom.com
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