On Tue, 29 Nov 2011 17:23:10 +0800 Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> wrote: > On Tue, Nov 29, 2011 at 04:12:58PM +0800, Feng Tang wrote: > > This originates from a patch in Meego IVI kernel with the name > > linux-2.6.37-connext-0027-tsc2007.patch > > There is no author info excepte a line "From MeeGo > > <kernel@xxxxxxxxx>" > > > > When integrating tsc2007 on Intel IVI platform, there are a lot of > > noise data whose z1 value is around 10 which is not a sane "z1". So > > add a "z1_low_threshhold" to filter those nosie data, to make the > > device work properly. > > Sounds like a task for userspace to ignore pressure that is too low. > Bonus points for making it configurable so user can adjust > sensitivity. Actually, there is one more point :), without this patch, the driver won't work on our platforms. The tsc2007_soft_irq will keep reading the input data unless there is no valid pressure data. In our case, those noise data will be seen as valid data during tsc2007_calculate_pressure(), and the tsc2007_soft_irq will run endlessly. Thanks, Feng > > Thanks. > -- 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
