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libudev-compatible interface for devd
=====================================

Intended to work with xorg-server and libinput

Installation:

1. Install multimedia/v4l_compat port. In case of evdev-enabled kernels it
   can be patched to use system evdev headers instead of webcamd-supplied

2. Build and install libudev-devd

export CFLAGS=-I/usr/local/include
export CPPFLAGS=-I/usr/local/include
cd libudev-devd
./autogen.sh
./configure
make && sudo make install

3. recompile x11-servers/xorg-server with DEVD port option disabled and
following configure args added: --enable-config-udev=yes \
    --disable-config-udev-kms --disable-systemd-logind

If you are going to use /dev/kbdmux0 as keyboard input device patch[1] should
be applied to config/udev.c file in xorg distribution

4. Apply changes to xorg.conf

Remove all InputDevice from "ServerLayout" section of xorg.conf

For gsoc2014 evdev-enabled kernels add following lines to xorg.conf

<<< CUT

# Use the libinput driver for all event devices
Section "InputClass"
	Identifier	"evdev"
	Driver		"libinput"
#	Driver		"evdev"
	MatchDevicePath	"/dev/input/event*"
EndSection

# Explicitly set xkb_rules to evdev for keyboards
Section "InputClass"
	Identifier	"evdev keyboard"
	MatchIsKeyboard	"on"
	MatchDevicePath	"/dev/input/event*"
        Option		"XkbRules" "evdev"
EndSection

# Disable kbdmux to not receive keyboard events twice
Section "InputClass"
	Identifier	"evdev disable kbdmux"
	MatchIsKeyboard	"on"
	MatchProduct	"System keyboard multiplexer"
	MatchDevicePath	"/dev/input/event*"
	Option		"Ignore" "true"
EndSection

<<<CUT

For stock kernels add following lines to xorg.conf

<<<CUT

# Use the libinput driver for all event devices
Section "InputClass"
	Identifier	"evdev"
	MatchDevicePath	"/dev/input/event*"
	Driver		"evdev"
EndSection

Section "InputClass"
	Identifier	"kbdmux"
	MatchDevicePath	"/dev/kbdmux*"
	Driver		"kbd"
EndSection

Section "InputClass"
	Identifier	"System mouse"
	MatchDevicePath	"/dev/sysmouse"
	Driver		"mouse"
EndSection

Section "InputClass"
	Identifier	"PS/2 mouse"
	MatchDevicePath	"/dev/psm*"
	Driver		"mouse"
EndSection

Section "InputClass"
	Identifier	"USB mouses"
	MatchDevicePath	"/dev/ums*"
	Driver		"mouse"
EndSection

Section "InputClass"
	Identifier	"Joystick"
	MatchDevicePath "/dev/joy*"
	Driver		"mouse"
EndSection

Section "InputClass"
	Identifier	"Apple touchpad"
	MatchDevicePath	"/dev/atp*"
	Driver		"mouse"
EndSection

Section "InputClass"
	Identifier	"Wellspring touchpad"
	MatchDevicePath	"/dev/wsp*"
	Driver		"mouse"
EndSection

Section "InputClass"
	Identifier	"eGalax touchscreen"
	MatchDevicePath	"/dev/uep*"
	Driver		"egalax"
EndSection

<<<CUT

5. Fetch and install libinput port by Jan Kokemuller???

For gsoc2014 evdev-enabled kernels only:

fetch https://github.com/wulf7/libinput/archive/master.tar.gz
tar zxvf master.tar.gz
cd libinput-master
./autogen.sh
make && sudo make install

6. Fetch and install xf86-input-libinput

For gsoc2014 evdev-enabled kernels only:

fetch http://xorg.freedesktop.org/releases/individual/driver/xf86-input-libinput-0.14.0.tar.bz2
..
..
..

7. Appendix

[1] config/udev.c patch. Just place content between two <<<CUTs as
/usr/ports/x11-servers/xorg-server/files/patch-config_udev.c file

<<<CUT
+--- config/udev.c.orig	2015-05-21 17:23:54.000000000 +0300
++++ config/udev.c	2015-10-13 17:37:05.063290000 +0300
+@@ -29,6 +29,7 @@
+ 
+ #include <libudev.h>
+ #include <ctype.h>
++#include <fcntl.h>
+ #include <unistd.h>
+ 
+ #include "input.h"
+@@ -188,6 +189,20 @@ device_added(struct udev_device *udev_de
+         attrs.product = strdup(name);
+     input_options = input_option_new(input_options, "name", name);
+     input_options = input_option_new(input_options, "path", path);
++    if(strstr(path, "kbdmux") != NULL) {
++        /*
++         * Don't pass "device" option if the keyboard is already attached
++         * to the console (ie. open() fails). This would activate a special
++         * logic in xf86-input-keyboard. Prevent any other attached to console
++         * keyboards being processed. There can be only one such device.
++         */
++        int fd = open(path, O_RDONLY);
++        if (fd > -1) {
++            close(fd);
++            input_options = input_option_new(input_options, "device", path);
++        }
++    }
++    else
+     input_options = input_option_new(input_options, "device", path);
+     input_options = input_option_new(input_options, "major", itoa(major(devnum)));
+     input_options = input_option_new(input_options, "minor", itoa(minor(devnum)));
<<<CUT

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