linux-kernel - Re: [W1] a driver for DS2405 chip

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Date:	Fri, 5 Nov 2010 18:38:24 +1100
From:	Ben Nizette <bn@...sdigital.com>
To:	Maciej Szmigiero <mhej@...pl>
Cc:	Jonathan Cameron <jic23@....ac.uk>, johnpol@....mipt.ru,
	linux-kernel@...r.kernel.org,
	David Brownell <dbrownell@...rs.sourceforge.net>
Subject: Re: [W1] a driver for DS2405 chip


On 05/11/2010, at 9:15 AM, Maciej Szmigiero wrote:

> W dniu 04.11.2010 22:16, Ben Nizette pisze:
>> 
>> On 05/11/2010, at 7:01 AM, Maciej Szmigiero wrote:
>> 
>> Well that and standardisation!  However it does seem that while conceptually your device should present a gpio interface it's on the fringe
>> of what gpiolib was designed to do.  I'd understand if you don't feel like making gpiolib better support hotpluggable devices however it
>> sounds like it'd be worth doing, not just for 1-W but also, eg, USB GPIO expanders.
> 
> So in your opinion is it worth "bending" the GPIO subsystem to accommodate devices like this one?
> This doesn't seem very hard if that parent thing works, just one new function (gpiochip_remove_blocking() or similar).
> 

s/bending/extending ;-)

I don't reckon it'll be long until someone starts trying to connect up other 1-W/USB/otherwise-hotpluggable expanders through gpiolib and if there are roadblocks they should be addressed.

David has the last word of course but I quite like the idea.

> Anyway, thanks for helping make the code better!

:-)

> 
>> 	--Ben.
> 
> Maciej Szmigiero

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