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| author | Paul Fox <pgf@laptop.org> | 2009-08-05 00:30:31 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2009-08-05 00:34:32 -0700 |
| commit | c46dd1eb9a4f1b8c1bb597a75199e3d34fb7b43b (patch) | |
| tree | 62f03ed65d4e6cc309535e6cafb20290cce3698e /drivers/input/keyboard/hil_kbd.c | |
| parent | cf5f439b48f82c230dcd81d0061e00664cbb6d39 (diff) | |
| download | blackbird-op-linux-c46dd1eb9a4f1b8c1bb597a75199e3d34fb7b43b.tar.gz blackbird-op-linux-c46dd1eb9a4f1b8c1bb597a75199e3d34fb7b43b.zip | |
Input: hgpk - forced recalibration for the OLPC touchpad
The OLPC XO laptop incorporates a combination touchpad/tablet device
which unfortunately requires frequent recalibration. The driver will
force this automatically when various suspicious behaviors are
observed, and the user can recalibrate manually (with a special
keyboard sequence). There's currently no way, however, for an external
program to cause recalibration. We can not use the reconnect
capability which is already available in /sys because full reset of
the touchpad takes 1.1 - 1.2 secons which is too long.
This patch creates a new node in /sys which, when written with '1',
will force a touchpad recalibration; no other writes (or reads)
of this node are supported.
Signed-off-by: Paul Fox <pgf@laptop.org>
Acked-by: Andres Salomon <dilinger@collabora.co.uk>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/keyboard/hil_kbd.c')
0 files changed, 0 insertions, 0 deletions
