Re: [PATCH 0/4] iio: mxs-lradc: fix interactions between the touchscreen and the ADC

["Kristina Martšenko" <kristina.martsenko@gmail.com>]

On 18/01/15 13:21, Stefan Wahren wrote:
> Hi Kristina,

Hi Stefan!

>> Kristina Martšenko <kristina.martsenko@gmail.com> hat am 17. Januar 2015 um
>> 01:22 geschrieben:
>> These patches fix some issues with using the touchscreen and reading
>> other ADC channels at the same time.
>>
>> The main issue is that the "virtual" channels the touchscreen uses can
>> overlap with the channels that the iio buffer is configured to read,
>> causing the touchscreen to read those channels instead, and report wrong
>> values. Patch #1 fixes that by separating the channels they use.
>>
>> Patches #2 and #3 stop buffered mode and sysfs reads from disabling the
>> touchscreen. Patch #4 keeps the buffer from reporting wrong values when
>> the touchscreen is in use.
>>
>> Note that I've only tested these patches on i.MX28. I checked the i.MX23
>> reference manual [1], and there don't seem to be any differences in the
>> parts I changed, but it would still be nice if someone could test on
>> i.MX23 as well.
> 
> i have a iMX233-Olinuxino-MAXI, but no touchscreen. If it does make sense
> to you, could you please send me testing instructions and i'll give it a try?

Thanks a lot for offering! Unfortunately in this case all testing
involves using the touchscreen while reading other ADC channels, so
without a touchscreen there isn't much to test, sorry :(

Kristina