On Fri, 24 Feb 2012 00:21:58 -0800 Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> wrote: > Hi Andres, > > On Fri, Feb 17, 2012 at 06:06:34PM -0800, Andres Salomon wrote: > > > > From: Paul Fox <pgf@xxxxxxxxxx> > > > > on OLPC XO laptops, at least one model of touchpad (sentelic) > > emits continuous jittery motion reports when the laptop is > > configured in "ebook" mode. the touchpad is inaccessible in > > that configuration, so we simply disable it. > > > > these motion reports will wake the SoC when put to sleep, so simply > > ignoring the events is not a possibilty; the device must be > > disabled. > > Can you switch the AUX serio port into manual bind mode (viqa sysfs) > and simply connect/disconnect the touchpad as needed (again via > sysfs)? > Thanks for the suggestion. We're in the process of testing that; it does stop the touchpad from transmitting data, but there are some reinit issues to be investigated. Quoth pgf, "the added latency due to the reinit when we enter/exit ebook mode might or might not be acceptable. and our touchpad (sentelic) needs some boot time initialization from user-level -- we're not sure whether we'll need to redo some or all of that. (we do seem to lose the current values of vscroll and hscroll, for instance.)" -- 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
