[PATCH 3.16 077/370] ALSA: hda - Gate the mic jack on HP Z1 Gen3 AiO

[Ben Hutchings]

3.16.42-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Takashi Iwai <tiwai@xxxxxxx>

commit f73cd43ac3b41c0f09a126387f302bbc0d9c726d upstream.

HP Z1 Gen3 AiO with Conexant codec doesn't give an unsolicited event
to the headset mic pin upon the jack plugging, it reports only to the
headphone pin.  It results in the missing mic switching.  Let's fix up
by simply gating the jack event.

Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 sound/pci/hda/patch_conexant.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

--- a/sound/pci/hda/patch_conexant.c
+++ b/sound/pci/hda/patch_conexant.c
@@ -2844,6 +2844,7 @@ enum {
 	CXT_FIXUP_CAP_MIX_AMP_5047,
 	CXT_FIXUP_MUTE_LED_EAPD,
 	CXT_FIXUP_HP_SPECTRE,
+	CXT_FIXUP_HP_GATE_MIC,
 };
 
 /* for hda_fixup_thinkpad_acpi() */
@@ -3217,6 +3218,17 @@ static void cxt_fixup_cap_mix_amp_5047(s
 				  (1 << AC_AMPCAP_MUTE_SHIFT));
 }
 
+static void cxt_fixup_hp_gate_mic_jack(struct hda_codec *codec,
+				       const struct hda_fixup *fix,
+				       int action)
+{
+	/* the mic pin (0x19) doesn't give an unsolicited event;
+	 * probe the mic pin together with the headphone pin (0x16)
+	 */
+	if (action == HDA_FIXUP_ACT_PROBE)
+		snd_hda_jack_set_gating_jack(codec, 0x19, 0x16);
+}
+
 /* ThinkPad X200 & co with cxt5051 */
 static const struct hda_pintbl cxt_pincfg_lenovo_x200[] = {
 	{ 0x16, 0x042140ff }, /* HP (seq# overridden) */
@@ -3358,6 +3370,10 @@ static const struct hda_fixup cxt_fixups
 			{ }
 		}
 	},
+	[CXT_FIXUP_HP_GATE_MIC] = {
+		.type = HDA_FIXUP_FUNC,
+		.v.func = cxt_fixup_hp_gate_mic_jack,
+	},
 };
 
 static const struct snd_pci_quirk cxt5045_fixups[] = {
@@ -3408,6 +3424,7 @@ static const struct snd_pci_quirk cxt506
 	SND_PCI_QUIRK(0x1025, 0x054c, "Acer Aspire 3830TG", CXT_FIXUP_ASPIRE_DMIC),
 	SND_PCI_QUIRK(0x1025, 0x054f, "Acer Aspire 4830T", CXT_FIXUP_ASPIRE_DMIC),
 	SND_PCI_QUIRK(0x103c, 0x8174, "HP Spectre x360", CXT_FIXUP_HP_SPECTRE),
+	SND_PCI_QUIRK(0x103c, 0x8115, "HP Z1 Gen3", CXT_FIXUP_HP_GATE_MIC),
 	SND_PCI_QUIRK(0x1043, 0x138d, "Asus", CXT_FIXUP_HEADPHONE_MIC_PIN),
 	SND_PCI_QUIRK(0x152d, 0x0833, "OLPC XO-1.5", CXT_FIXUP_OLPC_XO),
 	SND_PCI_QUIRK(0x17aa, 0x20f2, "Lenovo T400", CXT_PINCFG_LENOVO_TP410),