RADEON_LVDS_BL_MOD_LEVEL_SHIFT
(backlight_level << RADEON_LVDS_BL_MOD_LEVEL_SHIFT));
RADEON_LVDS_BL_MOD_LEVEL_SHIFT) & 0xff;
RADEON_LVDS_BL_MOD_LEVEL_SHIFT) & 0xff;
RADEON_LVDS_BL_MOD_LEVEL_SHIFT) & 0xff;
backlight_level = (lvds_gen_cntl >> RADEON_LVDS_BL_MOD_LEVEL_SHIFT) & 0xff;