snd_aw2_saa7146_use_digital_input
snd_aw2_saa7146_use_digital_input(&chip->saa7146, !is_disgital);
snd_aw2_saa7146_use_digital_input(chip, 0);
extern void snd_aw2_saa7146_use_digital_input(struct snd_aw2_saa7146 *chip,