struct max9768 *max9768 = snd_soc_codec_get_drvdata(codec);
gpio_set_value_cansleep(max9768->mute_gpio, !ucontrol->value.integer.value[0]);
struct max9768 *max9768 = snd_soc_codec_get_drvdata(codec);
gpio_set_value_cansleep(max9768->mute_gpio, !ucontrol->value.integer.value[0]);