BACKLIGHT_ON 1232 drivers/gpu/drm/gma500/psb_intel_reg.h #define BACKLIGHT_ON (1 << 2) BACKLIGHT_ON 10727 drivers/gpu/drm/i915/i915_reg.h #define BACKLIGHT_ON (1 << 4) BACKLIGHT_ON 98 drivers/platform/x86/fujitsu-laptop.c #define BACKLIGHT_ON 0