he Magic Mouse uses a vendor-specific code page to turn on its
multi-touch support, and then reports that with an "unlisted"
input report.  The first two patches in this series allow the
driver to (respectively) register for and enable those reports.

The third patch is the driver itself.  The major and minor axis
lengths use what the device sends, and the units for those are
larger than for the touch resolution.  I'm not sure how hard a
rule it is that those be in surface units.

 drivers/hid/Kconfig           |   10 +
 drivers/hid/Makefile          |    1 +
 drivers/hid/hid-core.c        |    4 +-
 drivers/hid/hid-ids.h         |    1 +
 drivers/hid/hid-magicmouse.c  |  395 +++++++++++++++++++++++++++++++++++++++++
 drivers/hid/usbhid/hid-core.c |   23 +++
 include/linux/hid.h           |    5 +
 net/bluetooth/hidp/core.c     |   25 +++
 8 files changed, 463 insertions(+), 1 deletions(-)