Thanks for your reply.
The code following the link almost the same as the official kernel source.
what a pity this is not the what i want. I have read a comment says the 
freescale linux kernel
have the driver fo this device.
However, i could not find the kernel of freescale.

On Thu, Aug 17, 2017 at 2:25 PM Amit Kumar wrote:

Hi,

On Thu, Aug 17, 2017 at 2:33 PM kipade <kipade@163.com 
<mailto:kipade@163.com>> wrote:

    Hello all,
    Where could I get the source code of Atmel 641t touchscreen driver?
    I searched, no spec document and linux driver source for downloading.

    I don't know anything about this device but my search is pointing to:

http://elixir.free-electrons.com/linux/latest/source/drivers/input/touchscreen/atmel_mxt_ts.c

I'll suggest to double check your model number.

Regards,
Amit Kumar



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