diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 4a909170b59e..d38d6a04eb67 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -3443,6 +3443,56 @@ static void alc283_fixup_chromebook(struct hda_codec *codec,
 	}
 }
 
+/* mute tablet speaker pin (0x14) via dock plugging in addition */
+static void asus_tx300_automute(struct hda_codec *codec)
+{
+	struct alc_spec *spec = codec->spec;
+	snd_hda_gen_update_outputs(codec);
+	if (snd_hda_jack_detect(codec, 0x1b))
+		spec->gen.mute_bits |= (1ULL << 0x14);
+}
+
+static void alc282_fixup_asus_tx300(struct hda_codec *codec,
+				    const struct hda_fixup *fix, int action)
+{
+	struct alc_spec *spec = codec->spec;
+	/* TX300 needs to set up GPIO2 for the speaker amp */
+	static const struct hda_verb gpio2_verbs[] = {
+		{ 0x01, AC_VERB_SET_GPIO_MASK, 0x04 },
+		{ 0x01, AC_VERB_SET_GPIO_DIRECTION, 0x04 },
+		{ 0x01, AC_VERB_SET_GPIO_DATA, 0x04 },
+		{}
+	};
+	static const struct hda_pintbl dock_pins[] = {
+		{ 0x1b, 0x21114000 }, /* dock speaker pin */
+		{}
+	};
+	struct snd_kcontrol *kctl;
+
+	switch (action) {
+	case HDA_FIXUP_ACT_PRE_PROBE:
+		snd_hda_add_verbs(codec, gpio2_verbs);
+		snd_hda_apply_pincfgs(codec, dock_pins);
+		spec->gen.auto_mute_via_amp = 1;
+		spec->gen.automute_hook = asus_tx300_automute;
+		snd_hda_jack_detect_enable_callback(codec, 0x1b,
+						    HDA_GEN_HP_EVENT,
+						    snd_hda_gen_hp_automute);
+		break;
+	case HDA_FIXUP_ACT_BUILD:
+		/* this is a bit tricky; give more sane names for the main
+		 * (tablet) speaker and the dock speaker, respectively
+		 */
+		kctl = snd_hda_find_mixer_ctl(codec, "Speaker Playback Switch");
+		if (kctl)
+			strcpy(kctl->id.name, "Dock Speaker Playback Switch");
+		kctl = snd_hda_find_mixer_ctl(codec, "Bass Speaker Playback Switch");
+		if (kctl)
+			strcpy(kctl->id.name, "Speaker Playback Switch");
+		break;
+	}
+}
+
 enum {
 	ALC269_FIXUP_SONY_VAIO,
 	ALC275_FIXUP_SONY_VAIO_GPIO2,
@@ -3480,6 +3530,7 @@ enum {
 	ALC269_FIXUP_LIMIT_INT_MIC_BOOST,
 	ALC269VB_FIXUP_ORDISSIMO_EVE2,
 	ALC283_FIXUP_CHROME_BOOK,
+	ALC282_FIXUP_ASUS_TX300,
 };
 
 static const struct hda_fixup alc269_fixups[] = {
@@ -3735,6 +3786,10 @@ static const struct hda_fixup alc269_fixups[] = {
 		.type = HDA_FIXUP_FUNC,
 		.v.func = alc283_fixup_chromebook,
 	},
+	[ALC282_FIXUP_ASUS_TX300] = {
+		.type = HDA_FIXUP_FUNC,
+		.v.func = alc282_fixup_asus_tx300,
+	},
 };
 
 static const struct snd_pci_quirk alc269_fixup_tbl[] = {
@@ -3784,6 +3839,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x103c, 0x1983, "HP Pavilion", ALC269_FIXUP_HP_MUTE_LED_MIC1),
 	SND_PCI_QUIRK(0x103c, 0x21ed, "HP Falco Chromebook", ALC283_FIXUP_CHROME_BOOK),
 	SND_PCI_QUIRK_VENDOR(0x103c, "HP", ALC269_FIXUP_HP_MUTE_LED),
+	SND_PCI_QUIRK(0x1043, 0x103f, "ASUS TX300", ALC282_FIXUP_ASUS_TX300),
 	SND_PCI_QUIRK(0x1043, 0x106d, "Asus K53BE", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
 	SND_PCI_QUIRK(0x1043, 0x115d, "Asus 1015E", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
 	SND_PCI_QUIRK(0x1043, 0x1427, "Asus Zenbook UX31E", ALC269VB_FIXUP_DMIC),