* [PATCH AUTOSEL 5.15 2/5] ALSA: hda/realtek - ALC285 reduce pop noise from Headphone port
[not found] <20240311151424.318621-1-sashal@kernel.org>
@ 2024-03-11 15:14 ` Sasha Levin
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From: Sasha Levin @ 2024-03-11 15:14 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Kailang Yang, Takashi Iwai, Sasha Levin, perex, tiwai, sbinding,
luke, andy.chi, shenghao-ding, ruinairas1992, vitalyr,
linux-sound
From: Kailang Yang <kailang@realtek.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@realtek.com>
Link: https://lore.kernel.org/r/7493e207919a4fb3a0599324fd010e3e@realtek.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.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
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