drm/i915: Fix the VBT child device parsing for BSW
Recent BSW VBT has a VBT child device size 37 bytes instead of the 33 bytes our code assumes. This means we fail to parse the VBT and thus fail to detect eDP ports properly and just register them as DP ports instead. Fix it up by using the reported child device size from the VBT instead of assuming it matches out struct defintions. The latest spec I have shows that the child device size should be 36 bytes for rev >= 195, however on my BSW the size is actually 37 bytes. And our current struct definition is 33 bytes. Feels like the entire VBT parses would need to be rewritten to handle changes in the layout better, but for now I've decided to do just the bare minimum to get my eDP port back. Cc: Vijay Purushothaman <vijay.a.purushothaman@linux.intel.com> Signed-off-by:Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by:
Damien Lespiau <damien.lespiau@intel.com> Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch>
parent
a4e0bedc
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