BACKLIGHT_KEY 581 drivers/hwmon/applesmc.c ret = applesmc_has_key(BACKLIGHT_KEY, &s->has_key_backlight); BACKLIGHT_KEY 649 drivers/hwmon/applesmc.c applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2); BACKLIGHT_KEY 925 drivers/hwmon/applesmc.c applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2);