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    drm/i915: parse child device from VBT · 6363ee6f
    Zhao Yakui 提交于
    On some laptops there is no HDMI/DP. But the xrandr still reports
    several disconnected HDMI/display ports. In such case the user will be
    confused.
     >DVI1 disconnected (normal left inverted right x axis y axis)
     >DP1 disconnected (normal left inverted right x axis y axis)
     >DVI2 disconnected (normal left inverted right x axis y axis)
     >DP2 disconnected (normal left inverted right x axis y axis)
     >DP3 disconnected (normal left inverted right x axis y axis)
    
    This patch set is to use the child device parsed in VBT to decide whether
    the HDMI/DP/LVDS/TV should be initialized.
    
    Parse the child device from VBT.
    
    The device class type is also added for LFP, TV, HDMI, DP output.
    
    https://bugs.freedesktop.org/show_bug.cgi?id=22785Signed-off-by: NZhao Yakui <yakui.zhao@intel.com>
    Reviewed-by: NAdam Jackson <ajax@redhat.com>
    Signed-off-by: NEric Anholt <eric@anholt.net>
    6363ee6f
i915_dma.c 43.9 KB