YB_DIGITIZER_IS_ON
if (digitizer_on && !test_bit(YB_DIGITIZER_IS_ON, &data->flags)) {
set_bit(YB_DIGITIZER_IS_ON, &data->flags);
set_bit(YB_DIGITIZER_IS_ON, &data->flags);
if (!test_bit(YB_DIGITIZER_IS_ON, &data->flags))
if (!digitizer_on && test_bit(YB_DIGITIZER_IS_ON, &data->flags)) {
clear_bit(YB_DIGITIZER_IS_ON, &data->flags);