linux-kernel - [PATCH] ALSA: hda/realtek - Limit int mic boost on Acer Aspire E5-575T

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Date:   Thu, 14 Jan 2021 16:27:28 +0800
From:   Chris Chiu <chiu@...lessos.org>
To:     perex@...ex.cz, tiwai@...e.com, kailang@...ltek.com
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        linux@...lessos.org, Chris Chiu <chiu@...lessos.org>
Subject: [PATCH] ALSA: hda/realtek - Limit int mic boost on Acer Aspire E5-575T

The Acer Apire E5-575T laptop with codec ALC255 has a terrible
background noise comes from internal mic capture. And the jack
sensing dose not work for headset like some other Acer laptops.

This patch limits the internal mic boost on top of the existing
ALC255_FIXUP_ACER_MIC_NO_PRESENCE quirk for Acer Aspire E5-575T.

Signed-off-by: Chris Chiu <chiu@...lessos.org>
---
 sound/pci/hda/patch_realtek.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 3c1d2a3fb1a4..60eb8383a704 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -6371,6 +6371,7 @@ enum {
 	ALC256_FIXUP_HP_HEADSET_MIC,
 	ALC236_FIXUP_DELL_AIO_HEADSET_MIC,
 	ALC282_FIXUP_ACER_DISABLE_LINEOUT,
+	ALC255_FIXUP_ACER_LIMIT_INT_MIC_BOOST,
 };
 
 static const struct hda_fixup alc269_fixups[] = {
@@ -7808,6 +7809,12 @@ static const struct hda_fixup alc269_fixups[] = {
 		.chained = true,
 		.chain_id = ALC269_FIXUP_HEADSET_MODE
 	},
+	[ALC255_FIXUP_ACER_LIMIT_INT_MIC_BOOST] = {
+		.type = HDA_FIXUP_FUNC,
+		.v.func = alc269_fixup_limit_int_mic_boost,
+		.chained = true,
+		.chain_id = ALC255_FIXUP_ACER_MIC_NO_PRESENCE,
+	},
 };
 
 static const struct snd_pci_quirk alc269_fixup_tbl[] = {
@@ -7826,6 +7833,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x1025, 0x102b, "Acer Aspire C24-860", ALC286_FIXUP_ACER_AIO_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x1025, 0x1065, "Acer Aspire C20-820", ALC269VC_FIXUP_ACER_HEADSET_MIC),
 	SND_PCI_QUIRK(0x1025, 0x106d, "Acer Cloudbook 14", ALC283_FIXUP_CHROME_BOOK),
+	SND_PCI_QUIRK(0x1025, 0x1094, "Acer Aspire E5-575T", ALC255_FIXUP_ACER_LIMIT_INT_MIC_BOOST),
 	SND_PCI_QUIRK(0x1025, 0x1099, "Acer Aspire E5-523G", ALC255_FIXUP_ACER_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x1025, 0x110e, "Acer Aspire ES1-432", ALC255_FIXUP_ACER_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x1025, 0x1166, "Acer Veriton N4640G", ALC269_FIXUP_LIFEBOOK),
-- 
2.20.1