+static int handsfree_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct soc_enum *e = (struct soc_enum *)w->kcontrols->private_value;
+ unsigned char hs_ctl;
+
+ hs_ctl = twl4030_read_reg_cache(w->codec, e->reg);
+
+ if (hs_ctl & TWL4030_HF_CTL_REF_EN) {
+ hs_ctl |= TWL4030_HF_CTL_RAMP_EN;
+ twl4030_write(w->codec, e->reg, hs_ctl);
+ hs_ctl |= TWL4030_HF_CTL_LOOP_EN;
+ twl4030_write(w->codec, e->reg, hs_ctl);
+ hs_ctl |= TWL4030_HF_CTL_HB_EN;
+ twl4030_write(w->codec, e->reg, hs_ctl);
+ } else {
+ hs_ctl &= ~(TWL4030_HF_CTL_RAMP_EN | TWL4030_HF_CTL_LOOP_EN
+ | TWL4030_HF_CTL_HB_EN);
+ twl4030_write(w->codec, e->reg, hs_ctl);
+ }
+
+ return 0;
+}
+