Comment 1 for bug 1169138

With this patch, a TRRS headset mic cannot be successfully detected
on the Asus X101CH, and we can also distinguish between headphone
and headset automatically.

Buglink: https://bugs.launchpad.net/bugs/1169138
Co-authored-by: Kailang <email address hidden>
Tested-by: Luis Henriques <email address hidden>
Signed-off-by: David Henningsson <email address hidden>
---

Now that we have better headset mic support infrastructure, I remembered I forgot
to upstream this patch. It was originally provided by Realtek (therefore, I cannot
answer for the msleeps and exactly why this is needed). I just rewrote it for the
current kernel version.

 sound/pci/hda/patch_realtek.c | 56 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 6cf27f5..1b7aed5 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -2680,6 +2680,34 @@ static void alc269_fixup_quanta_mute(struct hda_codec *codec,
  spec->gen.automute_hook = alc269_quanta_automute;
 }

+static void alc269_x101_hp_automute_hook(struct hda_codec *codec,
+ struct hda_jack_tbl *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, 0x18, 0, AC_VERB_SET_PIN_WIDGET_CONTROL,
+ vref);
+ msleep(500);
+ snd_hda_codec_write(codec, 0x18, 0, AC_VERB_SET_PIN_WIDGET_CONTROL,
+ vref);
+}
+
+static void alc269_fixup_x101_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 = alc269_x101_hp_automute_hook;
+ }
+}
+
+
 /* update mute-LED according to the speaker mute state via mic VREF pin */
 static void alc269_fixup_mic_mute_hook(void *private_data, int enabled)
 {
@@ -2837,6 +2865,9 @@ enum {
  ALC269_FIXUP_INV_DMIC,
  ALC269_FIXUP_LENOVO_DOCK,
  ALC269_FIXUP_PINCFG_NO_HP_TO_LINEOUT,
+ ALC269_FIXUP_ASUS_X101_FUNC,
+ ALC269_FIXUP_ASUS_X101_VERB,
+ ALC269_FIXUP_ASUS_X101,
  ALC271_FIXUP_AMIC_MIC2,
  ALC271_FIXUP_HP_GATE_MIC_JACK,
  ALC269_FIXUP_ACER_AC700,
@@ -2996,6 +3027,30 @@ static const struct hda_fixup alc269_fixups[] = {
   .type = HDA_FIXUP_FUNC,
   .v.func = alc269_fixup_pincfg_no_hp_to_lineout,
  },
+ [ALC269_FIXUP_ASUS_X101_FUNC] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = alc269_fixup_x101_headset_mic,
+ },
+ [ALC269_FIXUP_ASUS_X101_VERB] = {
+ .type = HDA_FIXUP_VERBS,
+ .v.verbs = (const struct hda_verb[]) {
+ {0x18, AC_VERB_SET_PIN_WIDGET_CONTROL, 0},
+ {0x20, AC_VERB_SET_COEF_INDEX, 0x08},
+ {0x20, AC_VERB_SET_PROC_COEF, 0x0310},
+ { }
+ },
+ .chained = true,
+ .chain_id = ALC269_FIXUP_ASUS_X101_FUNC
+ },
+ [ALC269_FIXUP_ASUS_X101] = {
+ .type = HDA_FIXUP_PINS,
+ .v.pins = (const struct hda_pintbl[]) {
+ { 0x18, 0x04a1182c }, /* Headset mic */
+ { }
+ },
+ .chained = true,
+ .chain_id = ALC269_FIXUP_ASUS_X101_VERB
+ },
  [ALC271_FIXUP_AMIC_MIC2] = {
   .type = HDA_FIXUP_PINS,
   .v.pins = (const struct hda_pintbl[]) {
@@ -3044,6 +3099,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
  SND_PCI_QUIRK(0x1043, 0x834a, "ASUS S101", ALC269_FIXUP_STEREO_DMIC),
  SND_PCI_QUIRK(0x1043, 0x8398, "ASUS P1005", ALC269_FIXUP_STEREO_DMIC),
  SND_PCI_QUIRK(0x1043, 0x83ce, "ASUS P1005", ALC269_FIXUP_STEREO_DMIC),
+ SND_PCI_QUIRK(0x1043, 0x8516, "ASUS X101CH", ALC269_FIXUP_ASUS_X101),
  SND_PCI_QUIRK(0x104d, 0x9073, "Sony VAIO", ALC275_FIXUP_SONY_VAIO_GPIO2),
  SND_PCI_QUIRK(0x104d, 0x907b, "Sony VAIO", ALC275_FIXUP_SONY_HWEQ),
  SND_PCI_QUIRK(0x104d, 0x9084, "Sony VAIO", ALC275_FIXUP_SONY_HWEQ),
--
1.7.9.5