linux-kernel - Re: [PATCHv1 1/2] rx51_battery: convert to iio consumer

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Message-ID: <CAAfyv36LD_JmPfBFCkQo9pLbgM4vwqk_P0M_XOAnPTUppQ1Zug@mail.gmail.com>
Date:	Tue, 4 Mar 2014 22:20:32 +0100
From:	Belisko Marek <marek.belisko@...il.com>
To:	Sebastian Reichel <sre@...ian.org>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCHv1 1/2] rx51_battery: convert to iio consumer

Hi Sebastian,

On Sat, Mar 1, 2014 at 12:22 AM, Sebastian Reichel <sre@...ian.org> wrote:
> Hi Marek,
>
> On Fri, Feb 28, 2014 at 11:32:22PM +0100, Belisko Marek wrote:
>> Seems I found issue. I have missing property ti,system-uses-second-madc-irq
>> as original twl4030_madc_battery used SW2 but this change doesn't fix completely
>> the problem.
>
> I remember adding this property because you requested it :) Good to
> know, that its really needed.
>
>> What it fixed completely is change:
>> -       req.raw = !(mask == IIO_CHAN_INFO_PROCESSED);
>> +       req.raw = 0;//!(mask == IIO_CHAN_INFO_PROCESSED);
>
> ok, that figures it. Instead of changing the twl4030-madc driver
> you should change the twl4030-madc-battery driver. You currently
> call iio_read_channel_raw(), which gives you raw values. Your
> driver wants processed data from twl4030-madc, so you should use
> iio_read_channel_processed() instead.
Yes this helps but also not completely :(. twl4030_madc_battery using
chanel 1, 10, 12. Channel 1 and 10 have flag IIO_CHAN_INFO_PROCESSED
set but channel 12 not and values from channel 12 are read as raw which is not
what I want. Can I simply add IIO_CHAN_INFO_PROCESSED also to channel 12?
>
> -- Sebastian

BR,

marek

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