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    SubjectRe: [PATCH] input: psmouse: create an 'enabled' sysfs attribute to squelch mouse
    On Fri, 24 Feb 2012 00:21:58 -0800
    Dmitry Torokhov <dmitry.torokhov@gmail.com> wrote:

    > Hi Andres,
    >
    > On Fri, Feb 17, 2012 at 06:06:34PM -0800, Andres Salomon wrote:
    > >
    > > From: Paul Fox <pgf@laptop.org>
    > >
    > > 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.)"


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