FB_BLANK_UNBLANK
bd->props.power = FB_BLANK_UNBLANK;
case FB_BLANK_UNBLANK:
panel->backlight.device->props.power = FB_BLANK_UNBLANK;
bool enable = bd->props.power == FB_BLANK_UNBLANK &&
props.power = FB_BLANK_UNBLANK;
bd->props.power = FB_BLANK_UNBLANK;
bd->props.power = FB_BLANK_UNBLANK;