On Fri, 26 Aug 2011 09:28:13 -0500, Seth Forshee <seth.forshee@xxxxxxxxxxxxx> wrote: > On Fri, Aug 26, 2011 at 09:03:11AM +0800, JJ Ding wrote: > > + /* > > + * check debounce first, it has the same signature in byte 0 > > Just one pedantic comment -- git complained about trailing whitespace on > this line. Not that important, and Dmitry can clean it up when he > applies the patch if he's so inclined. > > This patch looks good now, and it's testing fine for me. > > Reviewed-and-Tested-by: Seth Forshee <seth.forshee@xxxxxxxxxxxxx> Thank you very much for viewing and testing this code, Seth. > > I'm also curious what you found out about whether or not the touchpad > does accurate finger tracking. I've played with it a little, and the > finger tracking has been accurate except for one small exception. When > the fingers are overlapping on one axis the touchpad always reports the > same position for both fingers along that axis. For instance, if I move > one finger up and the other finger down simultaneously on the touchpad, > one of the fingers will show reverse movement on the y axis briefly > while the fingers overlap. But I've never seen the fingers swap between > the two frames of the packet. I just got confirmed that with v3, two finger touch always gets reported separately. I will resend this series for this update. Add what you observed is actually hardware limitation. The v3 hardware only has a projective sensor. When two fingers are overlapping along x or y axis, the hardware can only sense one on that axis, once the two fingers are away from the "crossing zone", they get reported separately again. jj > -- > 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 -- 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
