linux-kernel - Re: [PATCH RESEND] x86, intel

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Message-ID: <20120410223722.GY7499@opensource.wolfsonmicro.com>
Date:	Tue, 10 Apr 2012 23:37:23 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Jonathan Cameron <jic23@....ac.uk>
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>, mingo@...e.hu,
	linux-kernel@...r.kernel.org, Jonathan Cameron <jic23@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>
Subject: Re: [PATCH RESEND] x86, intel_mid: ADC management

On Tue, Apr 10, 2012 at 08:39:40PM +0100, Jonathan Cameron wrote:

> 1)  Review of code.  This is crucial. If people have a little time
> ripping holes in the core IIO code is what we need.  Arnd did a good job
> of this a while back. Others have done bits of it since.

> 2) Getting the push code tidied up and pushed out.  I'll post it as an
> updated rfc to linux-iio shortly.  All I had left that definitely
> wanted doing here was cleaning up the example iio to input bridge
> driver.  That can happen later.

For these two can we refactor in place?  That's pretty much what seems
to have been happening anyway...

> * Event passing to consumers else where in the kernel. Right now an
> input driver can readings from a sensor, but there is no way of
> requesting threshold interrupts.

> * Interaction between consumer drivers (e.g. hwmon or input) where some
> are requesting data by polling when they want it and others want a

These sound like something that can be added incrementally?

> > If the code was moved out of staging today what would go wrong?

> Churn in interfaces is probably about it.  Maybe a good use of any time

I guess the big question is then if we can live with that.

> would be for people to take their non IIO drivers that they think might
> fit (or data sheets!) and see whether there are things that they would
> like to be different.

In tree there's a few auxadc and comparator drivers in drivers/mfd, plus
things like arch/arm/plat-samsung/adc.c in the arch direcories.  These
are all broadly similar to the at91 code that's been sent to IIO
already.  There's also the code Alan posted at the top of this thread.

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