On Montag, 19. Oktober 2009, Maurus Cuelenaere wrote: > 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. Filtering can be done perfectly in userland (like all the other ts do). IMHO I can't see any need to do it in kernel space. jbe -- Pengutronix e.K. | Juergen Beisert | Linux Solutions for Science and Industry | Phone: +49-8766-939 228 | Vertretung Sued/Muenchen, Germany | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de/ | -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
