linux-kernel - Re: [PATCH] iio: inkern: Add of_xlate function to struct iio

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Message-ID: <1412348902.1027.48.camel@iivanov-dev>
Date:	Fri, 03 Oct 2014 18:08:22 +0300
From:	"Ivan T. Ivanov" <iivanov@...sol.com>
To:	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Cc:	Lars-Peter Clausen <lars@...afoo.de>,
	Jonathan Cameron <jic23@...nel.org>,
	Sachin Kamat <sachin.kamat@...aro.org>,
	John Stultz <john.stultz@...aro.org>,
	linux-iio@...r.kernel.org, svarbanov@...sol.com,
	linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH] iio: inkern: Add of_xlate function to struct iio_dev

On Fri, 2014-10-03 at 07:31 -0700, Srinivas Pandruvada wrote:
> On Thu, 2014-10-02 at 16:49 +0300, Ivan T. Ivanov wrote:
> > On Thu, 2014-10-02 at 15:30 +0200, Lars-Peter Clausen wrote:
> > > On 10/02/2014 02:32 PM, Ivan T. Ivanov wrote:
> > > > When #iio-cells is greater than '0', the driver could provide
> > > > a custom of_xlate function that reads the *args* and returns
> > > > the appropriate index in registered IIO channels array.
> > > 
> > > Do you have an example of a device that doesn't want to use the default 
> > > mapping? If yes please include it in the commit message, otherwise it is 
> > > fairly hard to say whether this makes sense or not.
> > 
> > Still not mainlined. You can find more detailed description of the 
> > issue here[1] and driver here[2].
> I see your need. I wonder this mapping be done in individual client
> driver instead of creating another callback.

I am not sure I got you question. The idea is to provide default
1:1 mapping in core, which can be overwritten by client callback.

Regards,
Ivan

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