Re: Touchscreen chip is not an ADS 7846

Hello Pierre,

Sunday, January 28, 2007, 9:54:14 PM, you wrote:

> Hi,

> the touchscreen is now working (probably for X50 and for sure for X51).
> I will post a first patch soon.
> I still have to define the coordinates transformation.

> Paul : I see you committed a new 7846 device-independent driver. Should
> I use this one from now ?

  Yes, I refactored it exactly for your use, and I'd appreciate if you
give it try (and win ;-) ). Please see h4000 code fro how to use it
(pretty simple actually, you just need to pass in pen down IRQ).

  I also confirmed that ADS7846 and TSC2046 are exact clones. Quoting
doc:
"The TSC2046 is 100% pin-compatible with the existing
ADS7846, and will drop into the same socket."
They talk about pin compatibility here, but looking at command bits,
programmatical interface is the same too. So, this is great news,
meaning that the whole dozen of PDAs can use the same driver. I will
try ads7846ts_ssp on hx4700 as the next thing to do too.

> Could you please commit the following modification to
> include/asm-arm/arch-pxa/memory.h ?

> #ifdef CONFIG_DRAM_BASE
> #define PHYS_OFFSET (CONFIG_DRAM_BASE)
> #else
> #define PHYS_OFFSET UL(0xa0000000)
> #endif

  Committed. So, can you confirm that with this modification CVS can
build bootable kernel for aximx50? It's time to tag next subrelease,
and I'd like to include working aximx50 into it.

> For Axim X50/X51(v), the current kernel can not be used without a manual
> modification...

> Pierre
[]

-- 
Best regards,
 Paul                            mailto:pmiscml_at_gmail.com