linux-kernel - [PATCH AUTOSEL 5.15 2/5] ALSA: hda/realtek - ALC285 reduce pop noise from Headphone port

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Date: Mon, 11 Mar 2024 11:14:18 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Kailang Yang <kailang@...ltek.com>,
	Takashi Iwai <tiwai@...e.de>,
	Sasha Levin <sashal@...nel.org>,
	perex@...ex.cz,
	tiwai@...e.com,
	sbinding@...nsource.cirrus.com,
	luke@...nes.dev,
	andy.chi@...onical.com,
	shenghao-ding@...com,
	ruinairas1992@...il.com,
	vitalyr@...nsource.cirrus.com,
	linux-sound@...r.kernel.org
Subject: [PATCH AUTOSEL 5.15 2/5] ALSA: hda/realtek - ALC285 reduce pop noise from Headphone port

From: Kailang Yang <kailang@...ltek.com>

[ Upstream commit b34bf65838f7c6e785f62681605a538b73c2808c ]

It had pop noise from Headphone port when system reboot state.
If NID 58h Index 0x0 to fill default value, it will reduce pop noise.

Signed-off-by: Kailang Yang <kailang@...ltek.com>
Link: https://lore.kernel.org/r/7493e207919a4fb3a0599324fd010e3e@realtek.com
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/pci/hda/patch_realtek.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index a6e6ed1355abf..3a86f0fd78278 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -3675,6 +3675,7 @@ static void alc285_hp_init(struct hda_codec *codec)
 	int i, val;
 	int coef38, coef0d, coef36;
 
+	alc_write_coefex_idx(codec, 0x58, 0x00, 0x1888); /* write default value */
 	alc_update_coef_idx(codec, 0x4a, 1<<15, 1<<15); /* Reset HP JD */
 	coef38 = alc_read_coef_idx(codec, 0x38); /* Amp control */
 	coef0d = alc_read_coef_idx(codec, 0x0d); /* Digital Misc control */
-- 
2.43.0