switch (event) {
        case SND_SOC_DAPM_PRE_PMU:
-               /* set cap-less, unmute HP */
+               /* unmute HP */
                regmap_clear_bits(jz_codec->regmap, JZ4770_CODEC_REG_CR_HP,
-                                 REG_CR_HP_SB_HPCM | REG_CR_HP_MUTE);
+                                 REG_CR_HP_MUTE);
                break;
 
        case SND_SOC_DAPM_POST_PMU:
                break;
 
        case SND_SOC_DAPM_POST_PMD:
-               /* set cap-couple, mute HP */
+               /* mute HP */
                regmap_set_bits(jz_codec->regmap, JZ4770_CODEC_REG_CR_HP,
-                               REG_CR_HP_SB_HPCM | REG_CR_HP_MUTE);
+                               REG_CR_HP_MUTE);
 
                err = regmap_read_poll_timeout(jz_codec->regmap,
                                               JZ4770_CODEC_REG_IFR,