linux-kernel - Re: [RFC, PATCH, take 2] watchdog on generic gpio

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Date:	Mon, 14 Jan 2008 14:01:33 +0100
From:	Marc Pignat <marc.pignat@...s.ch>
To:	Florian Fainelli <florian.fainelli@...ecomint.eu>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [RFC, PATCH, take 2] watchdog on generic gpio

Hi Florian!

On Monday 14 January 2008, Florian Fainelli wrote:
...
> I would like this function to be supplied by the platform_data structure 
> because as I mentioned before, not all GPIO connected watchdog will simply 
> need a single bit to be toggled, but also sometimes a full GPIO line.
I understand your wish, but...
You told me that your plaform doesn't implement the generic gpio interface
(yet?), so this driver can't work for you.

...
> 
> If we do not supply any specific callback to keepalive the watchdog let's just 
> assume we need a single bit to be toggled if this is ok with you ?
This is not the only function to be changed, start, stop and keepalive (and
probably suspend/resume) should be changed, and when the 'Uniform Watchdog
Device Driver' will be merged, writing your driver dealing with more gpio will
be almost trivial.

Please make sure to look a the right place, the git tree for the unified
driver you have given is 17 month old... here is the latest:
http://git.kernel.org/?p=linux/kernel/git/wim/linux-2.6-watchdog-mm.git;a=summary

I'm trying to get this work merged because I use it, it works for me and I'm
almost sure I haven't got the only embedded system using a max823 connected
to a gpio.

Let me know if you want some help implementing your driver!

Regards

Marc
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