ALSA: hda - Fix headset mic and mic-in for a Dell desktop

ALC662 does not need any special verbs to change the jack functionality,
and enables mic in through the headphone jack mode by changing the
direction of the headphone pin node.

BugLink: https://bugs.launchpad.net/bugs/1454235
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_realtek.c

@@ -3674,6 +3674,10 @@ static void alc_headset_mode_mic_in(struct hda_codec *codec, hda_nid_t hp_pin,
 		alc_process_coef_fw(codec, coef0293);
 		snd_hda_set_pin_ctl_cache(codec, mic_pin, PIN_VREF50);
 		break;
+	case 0x10ec0662:
+		snd_hda_set_pin_ctl_cache(codec, hp_pin, 0);
+		snd_hda_set_pin_ctl_cache(codec, mic_pin, PIN_VREF50);
+		break;
 	case 0x10ec0668:
 		alc_write_coef_idx(codec, 0x11, 0x0001);
 		snd_hda_set_pin_ctl_cache(codec, hp_pin, 0);
@@ -4012,7 +4016,7 @@ static void alc_update_headset_mode(struct hda_codec *codec)
 	if (new_headset_mode != ALC_HEADSET_MODE_MIC) {
 		snd_hda_set_pin_ctl_cache(codec, hp_pin,
 					  AC_PINCTL_OUT_EN | AC_PINCTL_HP_EN);
-		if (spec->headphone_mic_pin)
+		if (spec->headphone_mic_pin && spec->headphone_mic_pin != hp_pin)
 			snd_hda_set_pin_ctl_cache(codec, spec->headphone_mic_pin,
 						  PIN_VREFHIZ);
 	}
@@ -4215,6 +4219,18 @@ static void alc_fixup_dell_xps13(struct hda_codec *codec,
 	}
 }
 
+static void alc_fixup_headset_mode_alc662(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_mic = 1; /* Mic-in is same pin as headphone */
+	} else
+		alc_fixup_headset_mode(codec, fix, action);
+}
+
 static void alc_fixup_headset_mode_alc668(struct hda_codec *codec,
 				const struct hda_fixup *fix, int action)
 {
@@ -6087,7 +6103,9 @@ enum {
 	ALC662_FIXUP_NO_JACK_DETECT,
 	ALC662_FIXUP_ZOTAC_Z68,
 	ALC662_FIXUP_INV_DMIC,
+	ALC662_FIXUP_DELL_MIC_NO_PRESENCE,
 	ALC668_FIXUP_DELL_MIC_NO_PRESENCE,
+	ALC662_FIXUP_HEADSET_MODE,
 	ALC668_FIXUP_HEADSET_MODE,
 	ALC662_FIXUP_BASS_MODE4_CHMAP,
 	ALC662_FIXUP_BASS_16,
@@ -6280,6 +6298,20 @@ static const struct hda_fixup alc662_fixups[] = {
 		.chained = true,
 		.chain_id = ALC668_FIXUP_DELL_MIC_NO_PRESENCE
 	},
+	[ALC662_FIXUP_DELL_MIC_NO_PRESENCE] = {
+		.type = HDA_FIXUP_PINS,
+		.v.pins = (const struct hda_pintbl[]) {
+			{ 0x19, 0x03a1113c }, /* use as headset mic, without its own jack detect */
+			/* headphone mic by setting pin control of 0x1b (headphone out) to in + vref_50 */
+			{ }
+		},
+		.chained = true,
+		.chain_id = ALC662_FIXUP_HEADSET_MODE
+	},
+	[ALC662_FIXUP_HEADSET_MODE] = {
+		.type = HDA_FIXUP_FUNC,
+		.v.func = alc_fixup_headset_mode_alc662,
+	},
 	[ALC668_FIXUP_DELL_MIC_NO_PRESENCE] = {
 		.type = HDA_FIXUP_PINS,
 		.v.pins = (const struct hda_pintbl[]) {
@@ -6431,6 +6463,18 @@ static const struct hda_model_fixup alc662_fixup_models[] = {
 };
 
 static const struct snd_hda_pin_quirk alc662_pin_fixup_tbl[] = {
+	SND_HDA_PIN_QUIRK(0x10ec0662, 0x1028, "Dell", ALC662_FIXUP_DELL_MIC_NO_PRESENCE,
+		{0x12, 0x4004c000},
+		{0x14, 0x01014010},
+		{0x15, 0x411111f0},
+		{0x16, 0x411111f0},
+		{0x18, 0x01a19020},
+		{0x19, 0x411111f0},
+		{0x1a, 0x0181302f},
+		{0x1b, 0x0221401f},
+		{0x1c, 0x411111f0},
+		{0x1d, 0x4054c601},
+		{0x1e, 0x411111f0}),
 	SND_HDA_PIN_QUIRK(0x10ec0668, 0x1028, "Dell", ALC668_FIXUP_AUTO_MUTE,
 		{0x12, 0x99a30130},
 		{0x14, 0x90170110},