ALSA: hda/realtek - Add support for headset MIC for ALC622

Add headset MIC support for ALC622 of USI platform.
It only support headset of iphone type.
Signed-off-by: Kailang Yang <kailang@realtek.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_realtek.c

@@ -6564,6 +6564,30 @@ static void alc662_fixup_led_gpio1(struct hda_codec *codec,
 	}
 }
 
+static void alc662_usi_automute_hook(struct hda_codec *codec,
+					 struct hda_jack_callback *jack)
+{
+	struct alc_spec *spec = codec->spec;
+	int vref;
+	msleep(200);
+	snd_hda_gen_hp_automute(codec, jack);
+
+	vref = spec->gen.hp_jack_present ? PIN_VREF80 : 0;
+	msleep(100);
+	snd_hda_codec_write(codec, 0x19, 0, AC_VERB_SET_PIN_WIDGET_CONTROL,
+			    vref);
+}
+
+static void alc662_fixup_usi_headset_mic(struct hda_codec *codec,
+				     const struct hda_fixup *fix, int action)
+{
+	struct alc_spec *spec = codec->spec;
+	if (action == HDA_FIXUP_ACT_PRE_PROBE) {
+		spec->parse_flags |= HDA_PINCFG_HEADSET_MIC;
+		spec->gen.hp_automute_hook = alc662_usi_automute_hook;
+	}
+}
+
 static struct coef_fw alc668_coefs[] = {
 	WRITE_COEF(0x01, 0xbebe), WRITE_COEF(0x02, 0xaaaa), WRITE_COEF(0x03,    0x0),
 	WRITE_COEF(0x04, 0x0180), WRITE_COEF(0x06,    0x0), WRITE_COEF(0x07, 0x0f80),
@@ -6629,6 +6653,8 @@ enum {
 	ALC891_FIXUP_DELL_MIC_NO_PRESENCE,
 	ALC662_FIXUP_ACER_VERITON,
 	ALC892_FIXUP_ASROCK_MOBO,
+	ALC662_FIXUP_USI_FUNC,
+	ALC662_FIXUP_USI_HEADSET_MODE,
 };
 
 static const struct hda_fixup alc662_fixups[] = {
@@ -6913,6 +6939,20 @@ static const struct hda_fixup alc662_fixups[] = {
 			{ }
 		}
 	},
+	[ALC662_FIXUP_USI_FUNC] = {
+		.type = HDA_FIXUP_FUNC,
+		.v.func = alc662_fixup_usi_headset_mic,
+	},
+	[ALC662_FIXUP_USI_HEADSET_MODE] = {
+		.type = HDA_FIXUP_PINS,
+		.v.pins = (const struct hda_pintbl[]) {
+			{ 0x19, 0x02a1913c }, /* use as headset mic, without its own jack detect */
+			{ 0x18, 0x01a1903d },
+			{ }
+		},
+		.chained = true,
+		.chain_id = ALC662_FIXUP_USI_FUNC
+	},
 };
 
 static const struct snd_pci_quirk alc662_fixup_tbl[] = {
@@ -6948,6 +6988,7 @@ static const struct snd_pci_quirk alc662_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x1043, 0x8469, "ASUS mobo", ALC662_FIXUP_NO_JACK_DETECT),
 	SND_PCI_QUIRK(0x105b, 0x0cd6, "Foxconn", ALC662_FIXUP_ASUS_MODE2),
 	SND_PCI_QUIRK(0x144d, 0xc051, "Samsung R720", ALC662_FIXUP_IDEAPAD),
+	SND_PCI_QUIRK(0x14cd, 0x5003, "USI", ALC662_FIXUP_USI_HEADSET_MODE),
 	SND_PCI_QUIRK(0x17aa, 0x38af, "Lenovo Ideapad Y550P", ALC662_FIXUP_IDEAPAD),
 	SND_PCI_QUIRK(0x17aa, 0x3a0d, "Lenovo Ideapad Y550", ALC662_FIXUP_IDEAPAD),
 	SND_PCI_QUIRK(0x1849, 0x5892, "ASRock B150M", ALC892_FIXUP_ASROCK_MOBO),