linux-kernel - Re: [PATCH/RFCv2] wdt: Add support for PowerQUICC watchdog

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Date:	Thu, 17 Jan 2008 08:31:26 -0600
From:	Kumar Gala <galak@...nel.crashing.org>
To:	Jochen Friedrich <jochen@...am.de>
Cc:	wim@...ana.be, Scott Wood <scottwood@...escale.com>,
	linuxppc-dev@...abs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH/RFCv2] wdt: Add support for PowerQUICC watchdog


On Jan 17, 2008, at 6:47 AM, Jochen Friedrich wrote:

> The PowerQUICC series has a watchdog which can be activated by the  
> boot
> loader and then needs to be reset in regular intervals. Once the
> watchdog is enabled, it can't be disabled anymore. This patch adds
> support for this kind of watchdog. An early init function is  
> provided to
> manually reset the watchdog in early board setup. Later, a kernel  
> timer
> is used to reset the watchdog until the watchdog driver is opened from
> user space. This replaces mpc8xx_wdt.c (only usable for ARCH=ppc) and
> mpc83xx_wdt.c (untested on this platform).

Why are you commenting on mpc83xx_wdt with respect to pq1_wdt?

Also, is this driver just for PQ1 platforms or PQ1 & PQ2?  If its just  
pq1 we should probably call it pq1_wdt*

> Signed-off-by: Jochen Friedrich <jochen@...am.de>
> ---
> arch/powerpc/platforms/8xx/mpc86xads_setup.c |    5 +
> arch/powerpc/platforms/8xx/mpc885ads_setup.c |    5 +
> arch/powerpc/sysdev/Makefile                 |    3 +
> arch/powerpc/sysdev/pq_wdt.c                 |  203 +++++++++++++++++ 
> ++++++
> arch/powerpc/sysdev/pq_wdt.h                 |   28 ++++
> drivers/watchdog/Kconfig                     |   13 ++-
> drivers/watchdog/Makefile                    |    1 +
> drivers/watchdog/pq_wdt.c                    |  225 +++++++++++++++++ 
> +++++++++
> 8 files changed, 482 insertions(+), 1 deletions(-)
> create mode 100644 arch/powerpc/sysdev/pq_wdt.c
> create mode 100644 arch/powerpc/sysdev/pq_wdt.h
> create mode 100644 drivers/watchdog/pq_wdt.c

What are the bits in sysdev/pq_wdt.{c,h}.  Why aren't these just in  
drivers/watchdog?

- k
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