diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index fe96428..257b839 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -3468,6 +3468,29 @@ static void gpio2_mic_hotkey_event(struct hda_codec *codec,
 	input_sync(spec->kb_dev);
 }
 
+static int alc_register_micmute_input_device(struct hda_codec *codec)
+{
+	struct alc_spec *spec = codec->spec;
+
+	spec->kb_dev = input_allocate_device();
+	if (!spec->kb_dev) {
+		codec_err(codec, "Out of memory (input_allocate_device)\n");
+		return -ENOMEM;
+	}
+	spec->kb_dev->name = "Microphone Mute Button";
+	spec->kb_dev->evbit[0] = BIT_MASK(EV_KEY);
+	spec->kb_dev->keybit[BIT_WORD(KEY_MICMUTE)] = BIT_MASK(KEY_MICMUTE);
+
+	if (input_register_device(spec->kb_dev)) {
+		codec_err(codec, "input_register_device failed\n");
+		input_free_device(spec->kb_dev);
+		spec->kb_dev = NULL;
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
 static void alc280_fixup_hp_gpio2_mic_hotkey(struct hda_codec *codec,
 					     const struct hda_fixup *fix, int action)
 {
@@ -3485,20 +3508,8 @@ static void alc280_fixup_hp_gpio2_mic_hotkey(struct hda_codec *codec,
 	struct alc_spec *spec = codec->spec;
 
 	if (action == HDA_FIXUP_ACT_PRE_PROBE) {
-		spec->kb_dev = input_allocate_device();
-		if (!spec->kb_dev) {
-			codec_err(codec, "Out of memory (input_allocate_device)\n");
+		if (alc_register_micmute_input_device(codec) != 0)
 			return;
-		}
-		spec->kb_dev->name = "Microphone Mute Button";
-		spec->kb_dev->evbit[0] = BIT_MASK(EV_KEY);
-		spec->kb_dev->keybit[BIT_WORD(KEY_MICMUTE)] = BIT_MASK(KEY_MICMUTE);
-		if (input_register_device(spec->kb_dev)) {
-			codec_err(codec, "input_register_device failed\n");
-			input_free_device(spec->kb_dev);
-			spec->kb_dev = NULL;
-			return;
-		}
 
 		snd_hda_add_verbs(codec, gpio_init);
 		snd_hda_codec_write_cache(codec, codec->core.afg, 0,
@@ -3528,6 +3539,47 @@ static void alc280_fixup_hp_gpio2_mic_hotkey(struct hda_codec *codec,
 	}
 }
 
+static void alc233_fixup_lenovo_line2_mic_hotkey(struct hda_codec *codec,
+					     const struct hda_fixup *fix, int action)
+{
+	/* Line2 = mic mute hotkey
+	   GPIO2 = mic mute LED */
+	static const struct hda_verb gpio_init[] = {
+		{ 0x01, AC_VERB_SET_GPIO_MASK, 0x04 },
+		{ 0x01, AC_VERB_SET_GPIO_DIRECTION, 0x04 },
+		{}
+	};
+
+	struct alc_spec *spec = codec->spec;
+
+	if (action == HDA_FIXUP_ACT_PRE_PROBE) {
+		if (alc_register_micmute_input_device(codec) != 0)
+			return;
+
+		snd_hda_add_verbs(codec, gpio_init);
+		snd_hda_jack_detect_enable_callback(codec, 0x1b,
+						    gpio2_mic_hotkey_event);
+
+		spec->gen.cap_sync_hook = alc_fixup_gpio_mic_mute_hook;
+		spec->gpio_led = 0;
+		spec->mute_led_polarity = 0;
+		spec->gpio_mic_led_mask = 0x04;
+		return;
+	}
+
+	if (!spec->kb_dev)
+		return;
+
+	switch (action) {
+	case HDA_FIXUP_ACT_PROBE:
+		spec->init_amp = ALC_INIT_DEFAULT;
+		break;
+	case HDA_FIXUP_ACT_FREE:
+		input_unregister_device(spec->kb_dev);
+		spec->kb_dev = NULL;
+	}
+}
+
 static void alc269_fixup_hp_line1_mic1_led(struct hda_codec *codec,
 				const struct hda_fixup *fix, int action)
 {
@@ -4628,6 +4680,7 @@ enum {
 	ALC275_FIXUP_DELL_XPS,
 	ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE,
 	ALC293_FIXUP_LENOVO_SPK_NOISE,
+	ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY,
 };
 
 static const struct hda_fixup alc269_fixups[] = {
@@ -5237,6 +5290,10 @@ static const struct hda_fixup alc269_fixups[] = {
 		.chained = true,
 		.chain_id = ALC269_FIXUP_THINKPAD_ACPI
 	},
+	[ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY] = {
+		.type = HDA_FIXUP_FUNC,
+		.v.func = alc233_fixup_lenovo_line2_mic_hotkey,
+	},
 };
 
 static const struct snd_pci_quirk alc269_fixup_tbl[] = {
@@ -5386,6 +5443,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x17aa, 0x2223, "ThinkPad T550", ALC292_FIXUP_TPT440_DOCK),
 	SND_PCI_QUIRK(0x17aa, 0x2226, "ThinkPad X250", ALC292_FIXUP_TPT440_DOCK),
 	SND_PCI_QUIRK(0x17aa, 0x2233, "Thinkpad", ALC293_FIXUP_LENOVO_SPK_NOISE),
+	SND_PCI_QUIRK(0x17aa, 0x30bb, "ThinkCentre AIO", ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY),
 	SND_PCI_QUIRK(0x17aa, 0x3977, "IdeaPad S210", ALC283_FIXUP_INT_MIC),
 	SND_PCI_QUIRK(0x17aa, 0x3978, "IdeaPad Y410P", ALC269_FIXUP_NO_SHUTUP),
 	SND_PCI_QUIRK(0x17aa, 0x5013, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
