MPLL_TURNOFF      839 drivers/gpu/drm/radeon/r100d.h #define   MPLL_TURNOFF                                 (1 << 0)
MPLL_TURNOFF     1328 drivers/gpu/drm/radeon/r600d.h #       define MPLL_TURNOFF                               (1 << 2)
MPLL_TURNOFF       50 drivers/gpu/drm/radeon/rv6xxd.h #       define MPLL_TURNOFF                               (1 << 2)