[PATCH] ALSA: hda/cs420x: Add CS4208 fixup for MacBookAir 7,2

[PATCH] ALSA: hda/cs420x: Add CS4208 fixup for MacBookAir 7,2

[Jonne Vuorela]

>From 6aaa1f7fe990490a9b3d259a5ecde7495b60a281 Mon Sep 17 00:00:00 2001
From: Jonne Vuorela <jonne.vuorela@proton.me>
Date: Tue, 1 Sep 2026 16:40:10 +0300
Subject: [PATCH] ALSA: hda/cs420x: Add CS4208 fixup for MacBookAir 7,2

The MacBookAir 7,2 HDA controller has PCI subsystem 8086:7270
rather than Apple 0x106b, so no fixup is selected and all pins
default to 0x400000f0. The pin wiring matches MBA6, so add the
subsystem ID to both lookup tables pointing to CS4208_MBA6.

Tested on MacBookAir 7,2.

Signed-off-by: Jonne Vuorela <jonne.vuorela@proton.me>
---
 sound/hda/codecs/cirrus/cs420x.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/hda/codecs/cirrus/cs420x.c b/sound/hda/codecs/cirrus/cs420x.c
index 85c2ecf46d3..564a0e49a75 100644
--- a/sound/hda/codecs/cirrus/cs420x.c
+++ b/sound/hda/codecs/cirrus/cs420x.c
@@ -571,6 +571,7 @@ static const struct hda_model_fixup cs4208_models[] = {

 static const struct hda_quirk cs4208_fixup_tbl[] = {
 	SND_PCI_QUIRK_VENDOR(0x106b, "Apple", CS4208_MAC_AUTO),
+	SND_PCI_QUIRK(0x8086, 0x7270, "MacBookAir 7,2", CS4208_MAC_AUTO),
 	{} /* terminator */
 };

@@ -580,6 +581,7 @@ static const struct hda_quirk cs4208_mac_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x106b, 0x6c00, "MacMini 7,1", CS4208_MACMINI),
 	SND_PCI_QUIRK(0x106b, 0x7100, "MacBookAir 6,1", CS4208_MBA6),
 	SND_PCI_QUIRK(0x106b, 0x7200, "MacBookAir 6,2", CS4208_MBA6),
+	SND_PCI_QUIRK(0x8086, 0x7270, "MacBookAir 7,2", CS4208_MBA6),
 	SND_PCI_QUIRK(0x106b, 0x7800, "MacPro 6,1", CS4208_MACMINI),
 	SND_PCI_QUIRK(0x106b, 0x7b00, "MacBookPro 12,1", CS4208_MBP11),
 	SND_PCI_QUIRK(0x106b, 0x7f00, "iMac 16,1", CS4208_MBP11),
--
2.55.0

Re: [PATCH] ALSA: hda/cs420x: Add CS4208 fixup for MacBookAir 7,2

[Takashi Iwai]

On Tue, 01 Sep 2026 20:28:27 +0200,
Jonne Vuorela wrote:
> 
> From 6aaa1f7fe990490a9b3d259a5ecde7495b60a281 Mon Sep 17 00:00:00 2001
> From: Jonne Vuorela <jonne.vuorela@proton.me>
> Date: Tue, 1 Sep 2026 16:40:10 +0300
> Subject: [PATCH] ALSA: hda/cs420x: Add CS4208 fixup for MacBookAir 7,2
> 
> The MacBookAir 7,2 HDA controller has PCI subsystem 8086:7270
> rather than Apple 0x106b, so no fixup is selected and all pins
> default to 0x400000f0. The pin wiring matches MBA6, so add the
> subsystem ID to both lookup tables pointing to CS4208_MBA6.
> 
> Tested on MacBookAir 7,2.
> 
> Signed-off-by: Jonne Vuorela <jonne.vuorela@proton.me>

Applied now.  Thanks.

(I cleaned up the patch -- some mail headers are imposed in the patch
 description, and the corrected the table entry in SSID order)


Takashi