From 83551c0159e9101b39b2d727ca1be0fd76daaf73 Mon Sep 17 00:00:00 2001 From: Daniel Drake Date: Fri, 11 Nov 2011 16:05:04 -0800 Subject: [PATCH] Input: synaptics - update OLPC XO exclusion We have determined that the jumpiness previously seen when using the synaptics kernel mouse driver on OLPC XO was due to not using the synaptics X11 userspace driver - the xf86-input-evdev driver was interpreting 'finger near pad' signals as movements. Newer versions of xf86-input-evdev fix this issue. Additionally, the synaptics kernel driver is now usable on this platform, but only when run in relative mode. Update the comment and refine the check to allow the synaptics driver to run on OLPC XO in relative mode. We will continue investigating the EC issue as time becomes available. Signed-off-by: Daniel Drake Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/synaptics.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index a3bb49c..06c9ee5 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -1389,15 +1389,12 @@ static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) int err = -1; /* - * The OLPC XO has issues with Synaptics' absolute mode; similarly to - * the HGPK, it quickly degrades and the hardware becomes jumpy and - * overly sensitive. Not only that, but the constant packet spew - * (even at a lowered 40pps rate) overloads the EC such that key - * presses on the keyboard are missed. Given all of that, don't - * even attempt to use Synaptics mode. Relative mode seems to work - * just fine. + * The OLPC XO has issues with Synaptics' absolute mode; the constant + * packet spew overloads the EC such that key presses on the keyboard + * are missed. Given that, don't even attempt to use Absolute mode. + * Relative mode seems to work just fine. */ - if (broken_olpc_ec) { + if (absolute_mode && broken_olpc_ec) { psmouse_info(psmouse, "OLPC XO detected, not enabling Synaptics protocol.\n"); return -ENODEV; -- 2.7.4