• Benjamin Herrenschmidt's avatar
    [PATCH] ppc32: Fix AGP and sleep again · 0c541b44
    Benjamin Herrenschmidt authored
    My previous patch that added sleep support for uninorth-agp and some AGP
    "off" stuff in radeonfb and aty128fb is breaking some configs.  More
    specifically, it has problems with rage128 setups since the DRI code for
    these in X doesn't properly re-enable AGP on wakeup or console switch
    (unlike the radeon DRM).
    
    This patch fixes the problem for pmac once for all by using a different
    approach.  The AGP driver "registers" special suspend/resume callbacks with
    some arch code that the fbdev's can later on call to suspend and resume
    AGP, making sure it's resumed back in the same state it was when suspended.
     This is platform specific for now.  It would be too complicated to try to
    do a generic implementation of this at this point due to all sort of weird
    things going on with AGP on other architectures.  We'll re-work that whole
    problem cleanly once we finally merge fbdev's and DRI.
    
    In the meantime, please apply this patch which brings back some r128 based
    laptops into working condition as far as system sleep is concerned.
    Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
    Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
    0c541b44
pmac_feature.h 12.3 KB