VP_DCFG_DAC_BL_EN  241 drivers/video/fbdev/geode/gxfb.h #define VP_DCFG_DAC_BL_EN		(1 << 3)
VP_DCFG_DAC_BL_EN  328 drivers/video/fbdev/geode/lxfb.h #define VP_DCFG_DAC_BL_EN		(1 << 3)