Openmoko's S3C touchscreen driver porting question

Nelson Castillo arhuaco at
Thu Oct 1 20:38:14 CEST 2009

On Thu, Oct 1, 2009 at 12:57 PM, Maurus Cuelenaere
<mcuelenaere at> wrote:
> Hi Nelson,
> this is an update on your touchscreen driver on the S3C6410:
> after some debugging I found out that the S3C6410's touchscreen differs with
> the S3C24XX in that it has:
> a) 12-bit ADC support (haven't looked at that atm)
> b) additional registers used for clearing ADC and TS interrupts
> Due to b), the FIFO constantly got filled with up/down messages as the
> interrupt was never cleared.
> I've added/hacked support for this in my tree currently, but am waiting till
> your driver get in upstream
> to rebase my tree and try merging my changes.

Oh, I see.

Ben Dooks has been maintaining a version of the driver based in the
same sources that is not public. He said he will prepare the patches
and send them to Linux-arm-kernel.


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