ALSA: hda/realtek - Fix speaker support for Asus AiO ZN270IE

Asus AiO ZN270IE with ALC256 has no audio ouput for internal speaker
and headphone. It requires GPIO 2 as an amp. This commit enables the
GPIO and pulls it high.
Signed-off-by: Chris Chiu <chiu@endlessm.com>
Signed-off-by: Daniel Drake <drake@endlessm.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_realtek.c

@@ -4874,6 +4874,7 @@ enum {
 	ALC221_FIXUP_HP_MIC_NO_PRESENCE,
 	ALC256_FIXUP_ASUS_HEADSET_MODE,
 	ALC256_FIXUP_ASUS_MIC,
+	ALC256_FIXUP_ASUS_AIO_GPIO2,
 	ALC233_FIXUP_ASUS_MIC_NO_PRESENCE,
 	ALC233_FIXUP_EAPD_COEF_AND_MIC_NO_PRESENCE,
 };
@@ -5596,6 +5597,16 @@ static const struct hda_fixup alc269_fixups[] = {
 		.chained = true,
 		.chain_id = ALC256_FIXUP_ASUS_HEADSET_MODE
 	},
+	[ALC256_FIXUP_ASUS_AIO_GPIO2] = {
+		.type = HDA_FIXUP_VERBS,
+		.v.verbs = (const struct hda_verb[]) {
+			/* Set up GPIO2 for the speaker amp */
+			{ 0x01, AC_VERB_SET_GPIO_MASK, 0x04 },
+			{ 0x01, AC_VERB_SET_GPIO_DIRECTION, 0x04 },
+			{ 0x01, AC_VERB_SET_GPIO_DATA, 0x04 },
+			{}
+		},
+	},
 	[ALC233_FIXUP_ASUS_MIC_NO_PRESENCE] = {
 		.type = HDA_FIXUP_PINS,
 		.v.pins = (const struct hda_pintbl[]) {
@@ -5748,6 +5759,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x1043, 0x1290, "ASUS X441SA", ALC233_FIXUP_EAPD_COEF_AND_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x1043, 0x12a0, "ASUS X441UV", ALC233_FIXUP_EAPD_COEF_AND_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x1043, 0x1ccd, "ASUS X555UB", ALC256_FIXUP_ASUS_MIC),
+	SND_PCI_QUIRK(0x1043, 0x3030, "ASUS ZN270IE", ALC256_FIXUP_ASUS_AIO_GPIO2),
 	SND_PCI_QUIRK(0x1043, 0x831a, "ASUS P901", ALC269_FIXUP_STEREO_DMIC),
 	SND_PCI_QUIRK(0x1043, 0x834a, "ASUS S101", ALC269_FIXUP_STEREO_DMIC),
 	SND_PCI_QUIRK(0x1043, 0x8398, "ASUS P1005", ALC269_FIXUP_STEREO_DMIC),