xboxdrv: Xbox 360 Wireless Receiver with up to four gamepads

90-uinput.rules

# Set the ownership and permissions for the uinput device
KERNEL=="uinput", OWNER="root", GROUP="uinput", MODE="0660"

90-xboxdrv.rules

# Set the ownership and permissions for Xbox 360 Wireless Gaming Receiver
SUBSYSTEMS=="usb", ATTRS{idVendor}=="045e", ATTRS{idProduct}=="0719", OWNER="xboxdrv", GROUP="xboxdrv", MODE="0660"

org.seul.Xboxdrv.conf

<!DOCTYPE busconfig PUBLIC
          "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
          "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<busconfig>

  <!-- Only root or user xboxdrv can own the Xboxdrv service -->
  <policy user="xboxdrv">
    <allow own="org.seul.Xboxdrv"/>
  </policy>
  <policy user="root">
    <allow own="org.seul.Xboxdrv"/>
  </policy>

  <!-- Allow access to users of the group "xboxdrv" -->
  <policy group="xboxdrv">
    <allow send_destination="org.seul.Xboxdrv"/>
    <allow receive_sender="org.seul.Xboxdrv"/>
  </policy>
  <policy user="root">
    <allow send_destination="org.seul.Xboxdrv"/>
    <allow receive_sender="org.seul.Xboxdrv"/>
  </policy>
</busconfig>

org.seul.Xboxdrv.service

[D-BUS Service]
Name=org.seul.Xboxdrv
SystemdService=xboxdrv.service

# This service should not be bus activated if the systemd service 
# isn't running to prevent conflicts.
Exec=/bin/false

sdl-gamecontrollerconfig.sh

# Configure button mapping for Xbox 360 gamepads in sdl games
export SDL_GAMECONTROLLERCONFIG="0000000058626f7820363020576900,Xbox 360 Wireless Receiver,a:b0,b:b1,y:b3,x:b2,start:b7,guide:b8,back:b6,leftstick:b9,rightstick:b10,leftshoulder:b4,rightshoulder:b5,dpup:h0.1,dpleft:h0.8,dpdown:h0.4,dpright:h0.2,leftx:a0,lefty:a1,rightx:a3,righty:a4,lefttrigger:a2,righttrigger:a5,"

setup.sh

#!/bin/bash

groupadd --system uinput
useradd --system --shell /usr/bin/nologin --user-group --groups uinput --create-home --home /var/lib/xboxdrv xboxdrv

install -Dm644 "xboxdrv.modules-load.conf" "/etc/modules-load.d/xboxdrv.conf"
install -Dm644 "90-uinput.rules" "/etc/udev/rules.d/90-uinput.rules"
install -Dm644 "90-xboxdrv.rules" "/etc/udev/rules.d/90-xboxdrv.rules"
install -Dm644 "xboxdrv.conf" "/etc/xboxdrv/xboxdrv.conf"
install -Dm644 "xboxdrv.service" "/etc/systemd/system/xboxdrv.service"
install -Dm644 "org.seul.Xboxdrv.conf" "/etc/dbus-1/system.d/org.seul.Xboxdrv.conf"
install -Dm644 "org.seul.Xboxdrv.service" "/usr/share/dbus-1/system-services/org.seul.Xboxdrv.service"
install -Dm755 "sdl-gamecontrollerconfig.sh" "/etc/profile.d/sdl-gamecontrollerconfig.sh"

xboxdrv.conf

[xboxdrv]
silent = true

;[controller0]
wireless-id = 0
led = 2
mimic-xpad = true
device-name="Xbox 360 Wireless Receiver"
next-controller = true

;[controller1]
wireless-id = 1
led = 3
mimic-xpad = true
device-name="Xbox 360 Wireless Receiver"
next-controller = true

;[controller2]
wireless-id = 2
led = 4
mimic-xpad = true
device-name="Xbox 360 Wireless Receiver"
next-controller = true

;[controller4]
wireless-id = 3
led = 5
mimic-xpad = true
device-name="Xbox 360 Wireless Receiver"

[xboxdrv-daemon]
dbus = system

xboxdrv.modules-load.conf

# Load joydev and uinput at boot
joydev
uinput

xboxdrv.service

[Unit]
Description=A userspace gamepad driver

[Service]
Type=dbus
User=xboxdrv
Group=xboxdrv
BusName=org.seul.Xboxdrv
ExecStart=/usr/bin/xboxdrv -D -c /etc/xboxdrv/xboxdrv.conf

[Install]
WantedBy=multi-user.target
Alias=dbus-org.seul.Xboxdrv.service

Clone it and run setup.sh. Then start or enable the new service with systemctl.

That being said, it doesn't work for me. For example Dolphin sees both controllers when configuring them, and all of the buttons on them are mapped correctly. However whenever a game is started, only controller 1 is active, despite a second one being configured.

UPDATE: Turns out it was just a stupid dolphin config thing, totally my fault. I had to tell the emulated gamecube that there were two controllers plugged in.