Resubmitting the appletouch patches from last week with a couple of updates, as no one's taken a look yet. The appletouch driver can make some trackpads feel insensitive, with movement that tends to jerk in steps. This is particularly evident when moving diagonally. This can greatly hamper the trackpad's usability. These patches address this by dialing back the fuzz and threshold parameters, by implementing a new cursor movement smoothing algorithm and by discarding movements that directly coincide with a change in the number of fingers detected on the trackpad. Revisions since last week: Patch 1/3: Fuzz/threshold fix is identical, except for a typo (2 -> 3) Patch 2/3: Smoothing algorithm is no longer inertia-based and is more predictable / less complicated. I also dropped a change in atp_calculate_abs that I couldn't definitively prove was beneficial. Patch 3/3: (New) Addresses issues related to when a second finger enters or leaves the trackpad, causing the cursor to jump or the page to scroll unexpectedly; now, we discard any movement that happens at the exact moment we detect a change in the number of fingers touching the trackpad. Signed-off-by: Clinton Sprain <clintonsprain@xxxxxxxxx> drivers/input/mouse/appletouch.c | 206 ++++++++++++++++++++++++++++++-------- 1 file changed, 162 insertions(+), 44 deletions(-) -- 1.7.9.5 -- 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
