• José Roberto de Souza's avatar
    drm/i915: Enable hotplug retry · bb80c925
    José Roberto de Souza authored
    
    
    Right now we are aware of two cases that needs another hotplug retry:
    - Unpowered type-c dongles
    - HDMI slow unplug
    
    Both have a complete explanation in the code to schedule another run
    of the hotplug handler.
    
    It could have more checks to just trigger the retry in those two
    specific cases but why would sink signal a long pulse if there is
    no change? Also the drawback of running the hotplug handler again
    is really low and that could fix another cases that we are not
    aware.
    
    Also retrying for old DP ports(non-DDI) to make it consistent and not
    cause CI failures if those systems are connected to chamelium boards
    that will be used to simulate the issues reported in here.
    
    v2: Also retrying for old DP ports(non-DDI)(Imre)
    
    v4: Renamed INTEL_HOTPLUG_NOCHANGE to INTEL_HOTPLUG_UNCHANGED to keep
    it consistent(Rodrigo)
    
    Tested-by: default avatarTimo Aaltonen <tjaalton@ubuntu.com>
    Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
    Cc: Imre Deak <imre.deak@intel.com>
    Cc: Jani Nikula <jani.nikula@intel.com>
    Reviewed-by: default avatarImre Deak <imre.deak@intel.com>
    Signed-off-by: default avatarJosé Roberto de Souza <jose.souza@intel.com>
    Link: https://patchwork.freedesktop.org/patch/msgid/20190712005343.24571-2-jose.souza@intel.com
    bb80c925