linux-kernel - [PATCH v2] ALSA: hda: Add HP MP9 G4 Retail System AMS to force connect list

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Message-Id: <20240806-hdmi-audio-hp-wrongpins-v2-1-d9eb4ad41043@chromium.org>
Date: Tue, 06 Aug 2024 00:08:24 +0000
From: Steven 'Steve' Kendall <skend@...omium.org>
To: Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc: linux-sound@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Steven 'Steve' Kendall <skend@...omium.org>
Subject: [PATCH v2] ALSA: hda: Add HP MP9 G4 Retail System AMS to force
 connect list

In recent HP UEFI firmware (likely v2.15 and above, tested on 2.27),
these pins are incorrectly set for HDMI/DP audio. Tested on
HP MP9 G4 Retail System AMS. Tested audio with two monitors connected
via DisplayPort.

Link: https://forum.manjaro.org/t/intel-cannon-lake-pch-cavs-conexant-cx20632-no-sound-at-hdmi-or-displayport/133494
Link: https://bbs.archlinux.org/viewtopic.php?id=270523
Signed-off-by: Steven 'Steve' Kendall <skend@...omium.org>
---
Changes in v2:
- Now instead adds value to force connect list as suggested in review.
- I tested these changes with two monitors via DP, results identical to v1.
- Link to v1: https://lore.kernel.org/r/20240802-hdmi-audio-hp-wrongpins-v1-1-8d8ba10d77f8@chromium.org
---
 sound/pci/hda/patch_hdmi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 707d203ba652..4e7361d1d518 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -1989,6 +1989,7 @@ static int hdmi_add_cvt(struct hda_codec *codec, hda_nid_t cvt_nid)
 }
 
 static const struct snd_pci_quirk force_connect_list[] = {
+	SND_PCI_QUIRK(0x103c, 0x83ef, "HP MP9 G4 Retail System AMS", 1),
 	SND_PCI_QUIRK(0x103c, 0x870f, "HP", 1),
 	SND_PCI_QUIRK(0x103c, 0x871a, "HP", 1),
 	SND_PCI_QUIRK(0x103c, 0x8711, "HP", 1),

---
base-commit: 8400291e289ee6b2bf9779ff1c83a291501f017b
change-id: 20240802-hdmi-audio-hp-wrongpins-f88606f8d3ab

Best regards,
-- 
Steven 'Steve' Kendall <skend@...omium.org>