On 09/02/2010 10:26 PM, Dmitry Torokhov wrote: > Hi Henrik, > > On Thu, Sep 02, 2010 at 08:18:35PM +0200, Henrik Rydberg wrote: >> The signal-to-noise ratio varies between devices, but currently all >> devices are treated the same way. In addition, some devices report >> very low resolution, which makes the fuzz algorithm ineffective. >> Add fuzz and scale parameters to the feature struct, allowing for >> tailored treatment of devices. >> > > While we may adjust fuzz depending on the resolution scaling of the > data is not kernel's task and should be left to userspace. The scaling introduced here is for round-off errors in the EWMA filter. Maybe the Bamboo Touch is a one-in-a-million case, but any device reporting a resolution lower than the screen will exhibit very jerky motion without such a scaling. I put the scaling among the features in an attempt to reduce special code across the driver. Henrik -- 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
