+ if (regmap_write(ac10x->i2cmap[index], ADC1_DVOL_CTRL, 0xff)) {
+ dev_err(&i2c->dev, "fail to write adc1 volume register\n");
+ return -ENODEV;
+ }
+
+ if (regmap_write(ac10x->i2cmap[index], ADC2_DVOL_CTRL, 0xff)) {
+ dev_err(&i2c->dev, "fail to write adc2 volume register\n");
+ return -ENODEV;
+ }
+
+ if (regmap_write(ac10x->i2cmap[index], ADC3_DVOL_CTRL, 0xff)) {
+ dev_err(&i2c->dev, "fail to write adc3 volume register\n");
+ return -ENODEV;
+ }
+
+ if (regmap_write(ac10x->i2cmap[index], ADC4_DVOL_CTRL, 0xff)) {
+ dev_err(&i2c->dev, "fail to write adc4 volume register\n");
+ return -ENODEV;
+ }
+