Op 19-10-09 12:55, linux-arm-kernel-request@xxxxxxxxxxxxxxxxxxx schreef:
This touchscreen driver is for touchscreen controller on Samsung
S3C2410/S3C2440 SoC chip. S3C2410/S3C2440 has the on chip touchscreen
controller based on it's analog to digital converter(8-channel analog
inputs, touchscreen uses 4 of them). This driver uses the exsiting S3C
ADC driver to make the touchscreen controller of S3C2410/S3C2440 work
well together with other ADC devices connected to the S3C24XX SoC chip.
The patch is created against kernel 2.6.32-rc4 and tested with S3C2440
SoC and Samsung LTE430WQ-F0C touchscreen.
Signed-off-by: Shine Liu<liuxian@xxxxxxxxxxxxxxxxx>
Signed-off-by: Shine Liu<shinel@xxxxxxxxxxx>
Do you know that there's another patch (at Openmoko) created by Nelson
Castillo that does the same, but also has support for kernel-space
touchscreen filters? (I think [1] is his latest version)
I don't know how your patch performs, but according to [2] the filters
should help a lot avoiding jitter etc.
I'm not sure whether Nelson has submitted his patches for mainline
review yet and what the status is on the kernel filters, but IMHO doing
some filtering in kernel space (see the "Why are we doing filtering in
kernel space?" part of [2]) which results in a "cleaner" output is
preferred over reporting possible "jittery" data.
Regards,
Maurus Cuelenaere
[1]
http://nelson-patches.googlecode.com/svn/trunk/openmoko/kernel/ts-with-s3c-adc/
[2] http://wiki.openmoko.org/wiki/Touchscreen_Filters
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