[PATCH 4.3 030/157] ALSA: hda - Fix headphone noise after Dell XPS 13 resume back from S3

[Greg Kroah-Hartman]

4.3-stable review patch.  If anyone has any objections, please let me know.

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

From: Hui Wang <hui.wang@xxxxxxxxxxxxx>

commit 8c69729b4439bbda88c3073df7243f755cc418ed upstream.

We have a machine Dell XPS 13 with the codec alc256, after resume back
from S3, the headphone has noise when play sound.

Through comparing with the coeff vaule before and after S3, we found
restoring a coeff register will help remove noise.

BugLink: https://bugs.launchpad.net/bugs/1519168
Cc: Kailang Yang <kailang@xxxxxxxxxxx>
Signed-off-by: Hui Wang <hui.wang@xxxxxxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 sound/pci/hda/patch_realtek.c |   13 +++++++++++++
 1 file changed, 13 insertions(+)

--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4597,6 +4597,7 @@ enum {
 	ALC292_FIXUP_DISABLE_AAMIX,
 	ALC298_FIXUP_DELL1_MIC_NO_PRESENCE,
 	ALC275_FIXUP_DELL_XPS,
+	ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE,
 };
 
 static const struct hda_fixup alc269_fixups[] = {
@@ -5177,6 +5178,17 @@ static const struct hda_fixup alc269_fix
 			{}
 		}
 	},
+	[ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE] = {
+		.type = HDA_FIXUP_VERBS,
+		.v.verbs = (const struct hda_verb[]) {
+			/* Disable pass-through path for FRONT 14h */
+			{0x20, AC_VERB_SET_COEF_INDEX, 0x36},
+			{0x20, AC_VERB_SET_PROC_COEF, 0x1737},
+			{}
+		},
+		.chained = true,
+		.chain_id = ALC255_FIXUP_DELL1_MIC_NO_PRESENCE
+	},
 };
 
 static const struct snd_pci_quirk alc269_fixup_tbl[] = {
@@ -5216,6 +5228,7 @@ static const struct snd_pci_quirk alc269
 	SND_PCI_QUIRK(0x1028, 0x06de, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
 	SND_PCI_QUIRK(0x1028, 0x06df, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
 	SND_PCI_QUIRK(0x1028, 0x06e0, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
+	SND_PCI_QUIRK(0x1028, 0x0704, "Dell XPS 13", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE),
 	SND_PCI_QUIRK(0x1028, 0x164a, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x1028, 0x164b, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x103c, 0x1586, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC2),