[PATCH] ALSA: hda/realtek: Add quirk for Huawei MateBook X Pro 2020

[PATCH] ALSA: hda/realtek: Add quirk for Huawei MateBook X Pro 2020

[Cian Ruane]

The Huawei MateBook X Pro 2020 (MACHC-WAX9) has a combined headphone and
microphone jack, but the BIOS marks pin 0x19 as unconnected (0x411111f0).
As a result the headset microphone is missing and only the internal
microphone is available.

The mic mute LED on the F7 key does not follow the capture mute state
either. The machine uses the PCI subsystem vendor ID 0x1e83 (Huaqin)
rather than 0x19e5, so the Huawei vendor-wide quirk that sets up the LED
does not match.

Add a fixup that configures pin 0x19 as a headset microphone without its
own jack detection and chains to ALC269_FIXUP_HEADSET_MODE, which enables
headset mode and the mic mute LED. This is the MACHR-WX9 fixup without
its other pin overrides. The remaining BIOS pin defaults work, and pin
0x14, which the MACHR-WX9 uses for a second speaker pair, produces no
sound on this machine. Configuring pin 0x19 with presence detection
(0x04a11040) does not work either: the jack state drops to unplugged
while the headset is still connected.

Tested on: HUAWEI MACHC-WAX9 (MateBook X Pro 2020), BIOS 1.26,
Ubuntu 26.04 (kernel 7.0.0-38-generic, with this patch backported).

Signed-off-by: Cian Ruane <cian.ruane1@gmail.com>
---
 sound/hda/codecs/realtek/alc269.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/sound/hda/codecs/realtek/alc269.c b/sound/hda/codecs/realtek/alc269.c
index 23329d588..5a4cb04aa 100644
--- a/sound/hda/codecs/realtek/alc269.c
+++ b/sound/hda/codecs/realtek/alc269.c
@@ -4330,6 +4330,7 @@ enum {
 	ALC255_FIXUP_DELL_HEADSET_MIC,
 	ALC256_FIXUP_HUAWEI_MACH_WX9_PINS,
 	ALC256_FIXUP_HUAWEI_MACHR_WX9_PINS,
+	ALC256_FIXUP_HUAWEI_MACHC_WAX9_PINS,
 	ALC298_FIXUP_HUAWEI_MBX_STEREO,
 	ALC295_FIXUP_HP_X360,
 	ALC295_FIXUP_HP_PAVILION_X360,
@@ -5063,6 +5064,15 @@ static const struct hda_fixup alc269_fixups[] = {
 		.chained = true,
 		.chain_id = ALC269_FIXUP_HEADSET_MODE
 	},
+	[ALC256_FIXUP_HUAWEI_MACHC_WAX9_PINS] = {
+		.type = HDA_FIXUP_PINS,
+		.v.pins = (const struct hda_pintbl[]) {
+			{ 0x19, 0x04a11140 }, /* use as headset mic, without its own jack detect */
+			{ }
+		},
+		.chained = true,
+		.chain_id = ALC269_FIXUP_HEADSET_MODE
+	},
 	[ALC298_FIXUP_HUAWEI_MBX_STEREO] = {
 		.type = HDA_FIXUP_FUNC,
 		.v.func = alc298_fixup_huawei_mbx_stereo,
@@ -8727,6 +8737,7 @@ static const struct hda_quirk alc269_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x1e50, 0x7007, "Positivo DN50E", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
 	SND_PCI_QUIRK(0x1e50, 0x7036, "Acer Gadget E10 ETBook", ALC233_FIXUP_WUJIE_SPEAKERS),
 	SND_PCI_QUIRK(0x1e50, 0x7038, "Positivo DN140", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
+	SND_PCI_QUIRK(0x1e83, 0x3e21, "Huawei MACHC-WAX9", ALC256_FIXUP_HUAWEI_MACHC_WAX9_PINS),
 	SND_PCI_QUIRK(0x1ee7, 0x204e, "HONOR DRA-XX M1020", ALC256_FIXUP_HONOR_DRA_XX_SPEAKERS),
 	SND_PCI_QUIRK(0x1ee7, 0x2078, "HONOR BRB-X M1010", ALC2XX_FIXUP_HEADSET_MIC),
 	SND_PCI_QUIRK(0x1ee7, 0x2081, "HONOR MRB-XXX M1020", ALC256_FIXUP_HONOR_MRB_XXX_M1020_AUDIO),

base-commit: a4311e9447bbb219044db38897f95be112f46a8a
-- 
2.53.0