S_00000D_FORCE_US  236 drivers/gpu/drm/radeon/r420d.h #define   S_00000D_FORCE_US(x)                         (((x) & 0x1) << 28)
S_00000D_FORCE_US   45 drivers/gpu/drm/radeon/rv350d.h #define   S_00000D_FORCE_US(x)                         (((x) & 0x1) << 28)