RT5651_HP_CP_PD | RT5651_HP_SG_EN);
                regmap_update_bits(rt5651->regmap, RT5651_PR_BASE +
                        RT5651_CHPUMP_INT_REG1, 0x0700, 0x0400);
-               rt5651->hp_mute = 0;
+               rt5651->hp_mute = false;
                break;
 
        case SND_SOC_DAPM_PRE_PMD:
-               rt5651->hp_mute = 1;
+               rt5651->hp_mute = true;
                usleep_range(70000, 75000);
                break;
 
                dev_warn(&i2c->dev, "Failed to apply regmap patch: %d\n", ret);
 
        rt5651->irq = i2c->irq;
-       rt5651->hp_mute = 1;
+       rt5651->hp_mute = true;
 
        INIT_DELAYED_WORK(&rt5651->bp_work, rt5651_button_press_work);
        INIT_WORK(&rt5651->jack_detect_work, rt5651_jack_detect_work);