Add headset mode

Hi Takashi,

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

BR,
Kailang

From 71d98efd7dc5d4d789ffd6310a192903b34fb55d Mon Sep 17 00:00:00 2001
From: Kailang Yang <[email protected]>
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.

index 618ff25eff18..311cd52e82f1 100644
@@ -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,

Applied now. Thanks.

Takashi