bl_ctl_mode       332 drivers/video/backlight/lp855x_bl.c static DEVICE_ATTR(bl_ctl_mode, S_IRUGO, lp855x_get_bl_ctl_mode, NULL);
bl_ctl_mode       246 drivers/video/backlight/lp8788_bl.c static DEVICE_ATTR(bl_ctl_mode, S_IRUGO, lp8788_get_bl_ctl_mode, NULL);