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From: David Brownell <david-b@pacbell.net>
To: Alessandro Zummo <alessandro.zummo@towertech.it>
Subject: Re: [patch 2.6.20-rc3 1/3] rtc-cmos driver
Date: Fri, 5 Jan 2007 19:33:25 -0800
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       Linux Kernel list <linux-kernel@vger.kernel.org>,
       Andrew Morton <akpm@osdl.org>, Russell King <rmk@arm.linux.org.uk>,
       Woody Suwalski <woodys@xandros.com>
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On Friday 05 January 2007 7:10 pm, David Brownell wrote:
> On Friday 05 January 2007 12:45 pm, Alessandro Zummo wrote:

> >  I'd appreciate if someone (Woody?) can test
> >  this code on ARM.
> 
> There are PPC, M68K, SPARC, and other boards that could also
> use this; ARMs tend to integrate some other RTC on-chip.  But
> on whatever non-PC platform is involved in such sanity testing,
> that involves adding a platform_device to board setup code.

Let me put that differently.  That should be done as a separate
patch, adding (a) that platform_device, and maybe platform_data
if it's got additional alarm registers, and (b) Kconfig support
to let that work.  I'd call it a "patch #4 of 3".  ;)

The current Kconfig uses:

> +config RTC_DRV_CMOS
> +       tristate "CMOS real time clock"
> +       depends on RTC_CLASS && (X86_PC || ACPI)

Eventually maybe the PC-or-ACPI stuff should vanish, but IMO
not until this code has been used on a few other platforms.

- Dave