1. 01 Sep, 2016 1 commit
    • Peter Hutterer's avatar
      Allow compile-time selection of a fallback input driver · a3922cf7
      Peter Hutterer authored
      
      
      A new --with-fallback-input-driver=foo option allows selecting a
      fallback driver for the server if the driver configured for the device
      is not found.  Note that this only applies when the device has a driver
      assigned and that module fails to load, devices without a driver are
      ignored as usual.
      
      This avoids the situation where a configuration assigns e.g. the
      synaptics driver but that driver is not available on the system,
      resulting in a dead device. A fallback driver can at least provides some
      functionality.
      
      This becomes more important as we move towards making other driver true
      leaf nodes that can be installed/uninstalled as requested. Specifically,
      wacom and synaptics, a config that assigns either driver should be
      viable even when the driver itself is not (yet) installed on the system.
      
      It is up to the distributions to make sure that the fallback driver is
      always installed. The fallback driver can be disabled with
      --without-fallback-input-driver and is disabled by default on non-Linux
      systems because we don't have generic drivers on those platforms.
      Default driver on Linux is libinput, evdev is the only other serious
      candidate here.
      
      Sample log output:
      [  3274.421] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/event4)
      [  3274.421] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "touchpad weird driver"
      [  3274.421] (II) LoadModule: "banana"
      [  3274.422] (WW) Warning, couldn't open module banana
      [  3274.422] (II) UnloadModule: "banana"
      [  3274.422] (II) Unloading banana
      [  3274.422] (EE) Failed to load module "banana" (module does not exist, 0)
      [  3274.422] (EE) No input driver matching `banana'
      [  3274.422] (II) Falling back to input driver `libinput'
      .. server proceeds to assign libinput, init the device, world peace and rainbows
      everywhere, truly what a sight. Shame about the banana though.
      Reviewed-by: Adam Jackson's avatarAdam Jackson <ajax@redhat.com>
      Signed-off-by: Peter Hutterer's avatarPeter Hutterer <peter.hutterer@who-t.net>
      (cherry picked from commit c69bd15e)
      a3922cf7
  2. 19 Jul, 2016 13 commits
  3. 06 Jul, 2016 26 commits