[PATCH] USB: add apple usb touchpad driver

This is a driver for the USB touchpad which can be found on post-February 2005
Apple PowerBooks.

This driver is derived from Johannes Berg's appletrackpad driver [1],
but it has been improved in some areas:
    * appletouch is a full kernel driver, no userspace program is necessary
    * appletouch can be interfaced with the synaptics X11 driver[2], in order
      to have touchpad acceleration, scrolling, two/three finger tap, etc.

This driver has been tested by the readers of the 'debian-powerpc' mailing
list for a few weeks now and I believe it is now ready for inclusion into the
mainline kernel.

Credits go to Johannes Berg for reverse-engineering the touchpad protocol,
Frank Arnold for further improvements, and Alex Harper for some additional
information about the inner workings of the touchpad sensors.

Signed-off-by: Stelian Pop <stelian@popies.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/usb/input/Kconfig b/drivers/usb/input/Kconfig
index 482c4be521f5..1e53934907c0 100644
--- a/drivers/usb/input/Kconfig
+++ b/drivers/usb/input/Kconfig
@@ -286,3 +286,23 @@ config USB_KEYSPAN_REMOTE
 
           To compile this driver as a module, choose M here: the module will
           be called keyspan_remote.
+
+config USB_APPLETOUCH
+        tristate "Apple USB Touchpad support"
+        depends on USB && INPUT
+        ---help---
+          Say Y here if you want to use an Apple USB Touchpad.
+
+          These are the touchpads that can be found on post-February 2005
+          Apple Powerbooks (prior models have a Synaptics touchpad connected
+          to the ADB bus).
+
+          This driver provides a basic mouse driver but can be interfaced
+          with the synaptics X11 driver to provide acceleration and
+          scrolling in X11.
+
+          For further information, see
+          <file:Documentation/input/appletouch.txt>.
+
+          To compile this driver as a module, choose M here: the
+          module will be called appletouch.