linux-kernel - Re: [linux-sunxi] [PATCH v3 21/30] iio: adc: sun4i-gpadc-iio: add support for H3 thermal sensor

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Message-ID: <858dbcce-027a-5f48-ce66-06c79b6eeadd@gmail.com>
Date:   Thu, 30 Aug 2018 22:46:58 +0200
From:   Philipp Rossak <embed3d@...il.com>
To:     lee.jones@...aro.org, robh+dt@...nel.org, mark.rutland@....com,
        maxime.ripard@...tlin.com, wens@...e.org, linux@...linux.org.uk,
        jic23@...nel.org, knaack.h@....de, lars@...afoo.de,
        pmeerw@...erw.net, eugen.hristev@...rochip.com,
        rdunlap@...radead.org, vilhelm.gray@...il.com,
        clabbe.montjoie@...il.com, quentin.schulz@...tlin.com,
        geert+renesas@...der.be, lukas@...ner.de, icenowy@...c.io,
        arnd@...db.de, broonie@...nel.org, arnaud.pouliquen@...com,
        linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com
Subject: Re: [linux-sunxi] [PATCH v3 21/30] iio: adc: sun4i-gpadc-iio: add
 support for H3 thermal sensor



On 30.08.2018 22:00, Philipp Rossak wrote:
> On 30.08.2018 18:27, Ondřej Jirman wrote:
>>> +static int sun8i_h3_calibrate(struct sun4i_gpadc_iio *info)
>>> +{
>>> +//    regmap_write(info->regmap, SUNXI_THS_CDATA_0_1,
>>> +//            info->calibration_data[0]);
>>> +//    regmap_write(info->regmap, SUNXI_THS_CDATA_2_3,
>>> +//            info->calibration_data[1]);
>> This should probably be implemented, or left out completely.
>>
>> regards,
>>    o.
>>
> Thanks you are right!
> This should be implemented! I will fix this in the next version!
> 
> Thanks,
> Philipp

I just realized this function need to check if calibration datas are 
available. Writing zeros to the calibration data regs "breaks" the 
thermal sensor.

Philipp