Hi Gregor, and ALL.

Good news - have created module that wake up chip and load in FW and
reads coordinates!
Could not at the moment setup IRQ.
Polling mode is possible! but have not yet tested it completely, also
some weird happens with reading y coordinate - instead reading from 0
to 768 it reads normally till something 2xx-3xx, then overflow then
again from 0 to 500. Anyway even with this it could be fixed just with
corelation received information based on current behaviour. X looks is
readed perfect (0 - 1366).

Will generate dedicated to IRQ and touch screen thread with result and question.

Regards,

                Serge Kolotylo.

On Sun, Mar 13, 2016 at 1:24 PM, Gregor Riepl [off-list ref] wrote:

quoted

Actually I am not sure if I have waked up chip, BUT at the same I am
stabile receive something on i2c-3 0x30.
This looks like in DSDT ACPI and by analogy with Chuwi vi8 again is a
shift on Baytrail -1 on i2cbus.
The problem is - why I am receiving each time different values for
reading the same addresses on i2c bus?
I mean if I read 0xa address (should be 0x85 - the major version of
the chip) - I receive each time new values but not 0x85! see my posts
with test results.

HOW IT COULD BE  POSSIBLE SO?

...

Also from android - the only TS module is loaded and present is
atmel_mxt_ts - nm g shows

Well.... Perhaps you have one of those Atmel maXTouch chips after all?

Have you looked inside your tablet to confirm this?

The mXT most likely has a different protocol/memory map than the icn85xx.
If you can find a data sheet, you may be able to read the respective
identification registers.

Also, keep in mind that a loaded module does not necessarily mean you have the
corresponding hardware. There could be a user space driver that handles touch
on Android.

Or perhaps... You have a totally different chip.
Are you sure that all icnxxxx devices use the same memory map?