• Alan Cox's avatar
    gma500: gtt based hardware scrolling console · a6ba582d
    Alan Cox authored
    Add support for GTT based scrolling. Instead of pushing bits around we simply
    use the GTT to change the mappings. This provides us with a very fast way to
    scroll the display providing we have enough memory to allocate on 4K line
    boundaries. In practice this seems to be the case except for very big displays
    such as HDMI, and the usual configurations are netbooks/tablets.
    Signed-off-by: default avatarAlan Cox <alan@linux.intel.com>
    Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
    a6ba582d
gtt.c 14.7 KB