• Chris Wilson's avatar
    drm/i915: Use the VBT from OpRegion when available (v3) · 44834a67
    Chris Wilson authored
    It is recommended that we use the Video BIOS tables that were copied
    into the OpRegion during POST when initialising the driver. This saves
    us from having to furtle around inside the ROM ourselves and possibly
    allows the vBIOS to adjust the tables prior to initialisation.
    
    On some systems, such as the Samsung N210, there is no accessible VBIOS
    and the only means of finding the VBT is through the OpRegion.
    
    v2: Rearrange the code so that ASLE is enabled along with ACPI
    v3: Enable OpRegion parsing even without ACPI
    Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
    Cc: Matthew Garrett <mjg@redhat.com>
    44834a67
i915_dma.c 62.6 KB