Paul Sokolovsky a écrit :
> Hello Pierre,
>
>> this patch takes into account the new touchscreen API for aximx50.
>
> Sorry for this confusion, I eventually updated all ads7846ts-ssp
> client code myself, there was just delay while we settled some
> details. By now, that code is in CVS and builds, please update and
> rediff, and send new patch if something is missing. One thing I can
> spot now however:
>
> Sunday, February 18, 2007, 12:23:04 PM, you wrote:
>
>> diff -rNu -x CVS -x .project -x .cdtproject -x .settings -x debian
>> kernel26_vanilla/arch/arm/mach-pxa/aximx50/aximx50_ts.c
>> kernel26/arch/arm/mach-pxa/aximx50/aximx50_ts.c
>> --- kernel26_vanilla/arch/arm/mach-pxa/aximx50/aximx50_ts.c
>> 2007-02-17 21:10:39.834559729 +0100
>> +++ kernel26/arch/arm/mach-pxa/aximx50/aximx50_ts.c 2007-02-18
>> 09:49:30.717482213 +0100
>> @@ -30,6 +30,7 @@
>> struct ads7846_ssp_platform_data aximx50_ts_ssp_params = {
>> .port = 1,
>> .pd_bits = 1,
>> + .freq = 100000,
>> };
>> static struct platform_device ads7846_ssp = {
>> .name = "ads7846-ssp",
>
> Are you sure you want 100KHz here? Your previous patch, with
> SSCR0_SerClkDiv(7) corresponds to 13MHz / 7 = 1.85MHz on PXA27x. What
> I found (well, confirmed, Philipp Zabel had that idea) is that
> SSP frequency influences TS behavior, and with our current debouncing
> algorithm, it needs adjustment for specific model. For example, h4000
> works well at 100KHz and hx4700 at 720KHz. We'll need to make
> debouncing params adjustable, and after that, maybe algo too. In the
> meantime, please test few freq values and tell what works the best.
>
Hmm... In fact, I stupidely reproduced in the old SPI init comment that
said "100kHz". You are more than probably right.
What I really need now to validate my patchs is a working distribution
with X, touchscreen input calibration, etc. The Familiar
(ipaq-pxa270-gpe) I built is still not working...
Pierre
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