Add headset mode

[Kailang <kailang@realtek.com>]

[-- Attachment #1: Type: text/plain, Size: 108 bytes --]

Hi Takashi,

Prior patch will lose headset Mic function, and this patch will restore it.

BR,
Kailang

[-- Attachment #2: 0001-dell-QCDT-add-hsmode.patch --]
[-- Type: application/octet-stream, Size: 963 bytes --]

From 71d98efd7dc5d4d789ffd6310a192903b34fb55d Mon Sep 17 00:00:00 2001
From: Kailang Yang <kailang@realtek.com>
Date: Thu, 17 Sep 2026 14:53:26 +0800
Subject: [PATCH] ALSA: hda/realtek - Add headset mode for Dell Pro QC1255

It lost its headset microphone functionality, and this patch will restore it.

Fixes: 97272a5704bf ("ALSA: hda/realtek - Fixed Headphone noise issue for Dell QCM1255")
Signed-off-by: Kailang Yang <kailang@realtek.com>
diff --git a/sound/hda/codecs/realtek/alc269.c b/sound/hda/codecs/realtek/alc269.c
index 618ff25eff18..311cd52e82f1 100644
--- a/sound/hda/codecs/realtek/alc269.c
+++ b/sound/hda/codecs/realtek/alc269.c
@@ -7134,6 +7134,8 @@ static const struct hda_fixup alc269_fixups[] = {
 	[ALC236_FIXUP_DELL_HP_POP_NOISE] = {
 		.type = HDA_FIXUP_FUNC,
 		.v.func = alc285_fixup_invalidate_dacs,
+		.chained = true,
+		.chain_id = ALC255_FIXUP_DELL1_MIC_NO_PRESENCE
 	},
 	[ALC274_FIXUP_HP_89E9_GPIO] = {
 		.type = HDA_FIXUP_FUNC,