[Linux] add basic support for Wii U Pro Controller

Since Linux kernel 3.13, the Wii U Pro Controller works out-of-the-box
by simply connecting it as a bluetooth device. This is way better than
the Xbox 360 controller because you don't need a separate adapter.
Additionally the LEDs work properly and the controller has a power button,
so you can actually turn it off instead of having to unplug the battery.

This patch adds basic support for menu navigation and video playback. It
mostly matches the Xbox 360 Controller mappings (from the Wiki) with
some minor differences (e.g. the home button actually takes you home and
the secondary shoulder buttons are not analog).

I also tested this controller on Windows 8.1. You can connect it as a
bluetooth device but it doesn't actually work. The LEDs on the
controller keep blinking and XBMC only detects it as a joystick with 0
buttons, 0 hats and 0 axes. I guess there is simply no driver support but I
haven't looked into it in detail.

1 files changed, 112 insertions, 0 deletions

diff --git a/system/keymaps/joystick.Nintendo.Wii.U.Pro.Controller.xml b/system/keymaps/joystick.Nintendo.Wii.U.Pro.Controller.xml
new file mode 100644
index 0000000000..4ada215aa9
--- /dev/null
+++ b/system/keymaps/joystick.Nintendo.Wii.U.Pro.Controller.xml
@@ -0,0 +1,112 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+     Button mappings for the Nintendo Wii U Pro Controller (currently Linux only).
+
+     - The Power button is not actually usuable as a button
+       but can only be used to turn off the controller.
+
+     - Up until kernel 3.12, one of the axis was inverted
+       and the driver occasionally crashed, so one should at least
+       run kernel 3.13 to use this controller.
+
+     ID          Button
+
+     1           B
+     2           A
+     3           X
+     4           Y
+     5           L
+     6           R
+     7           ZL
+     8           ZR
+     9           Select
+     10          Start
+     11          Home
+     12          Left stick click
+     13          Right stick click
+     14          D-Pad Up
+     15          D-Pad Down
+     16          D-Pad Left
+     17          D-Pad Right
+     Axis 1      Left stick left/right
+     Axis 2      Left stick up/down
+     Axis 3      Right stick left/right
+     Axis 4      Right stick up/down
+
+-->
+<keymap>
+  <global>
+    <joystick name="Nintendo Wii Remote Pro Controller">
+      <!-- B, A, X, Y -->
+      <button id="1">Back</button>
+      <button id="2">Select</button>
+      <button id="3">FullScreen</button>
+      <button id="4">ContextMenu</button>
+
+      <!-- L, R -->
+      <button id="5">Queue</button>
+      <button id="6">Playlist</button>
+
+      <!-- ZL, ZR -->
+      <button id="7">ScrollUp</button>
+      <button id="8">ScrollDown</button>
+
+      <!-- Home -->
+      <button id="11">XBMC.ActivateWindow(Home)</button>
+
+      <!-- Left/Right stick click -->
+      <button id="12">XBMC.ActivateWindow(ShutdownMenu)</button>
+      <button id="13">XBMC.ActivateWindow(PlayerControls)</button>
+
+      <!-- D-Pad -->
+      <button id="14">Up</button>
+      <button id="15">Down</button>
+      <button id="16">Left</button>
+      <button id="17">Right</button>
+
+      <!-- Left stick -->
+      <axis id="1" limit="-1">Left</axis>
+      <axis id="1" limit="+1">Right</axis>
+      <axis id="2" limit="-1">Up</axis>
+      <axis id="2" limit="+1">Down</axis>
+
+      <!-- Right stick up/down -->
+      <axis id="4" limit="-1">VolumeUp</axis>
+      <axis id="4" limit="+1">VolumeDown</axis>
+    </joystick>
+  </global>
+
+  <FullscreenVideo>
+    <joystick name="Nintendo Wii Remote Pro Controller">
+      <!-- B, A, Y; X is global FullScreen. -->
+      <button id="1">Stop</button>
+      <button id="2">Pause</button>
+      <button id="4">OSD</button>
+
+      <!-- L/R -->
+      <button id="5">AudioNextLanguage</button>
+      <button id="6">NextSubtitle</button>
+
+      <!-- ZL/ZR -->
+      <button id="7">Rewind</button>
+      <button id="8">FastForward</button>
+
+      <!-- Start -->
+      <button id="10">Info</button>
+
+      <!-- Right stick click -->
+      <button id="13">AspectRatio</button>
+
+      <!-- D-Pad -->
+      <button id="14">BigStepForward</button>
+      <button id="15">BigStepBack</button>
+      <button id="16">StepBack</button>
+      <button id="17">StepForward</button>
+
+      <!-- Left stick left/right -->
+      <axis id="1" limit="-1">AnalogRewind</axis>
+      <axis id="1" limit="+1">AnalogFastForward</axis>
+
+    </joystick>
+  </FullscreenVideo>
+</keymap>