linux-kernel - [PATCH 2/2] ALSA: hda/realtek - Fix S3 pop noise on Dell Wyse

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Message-Id: <20200503152449.22761-2-kai.heng.feng@canonical.com>
Date:   Sun,  3 May 2020 23:24:47 +0800
From:   Kai-Heng Feng <kai.heng.feng@...onical.com>
To:     tiwai@...e.com
Cc:     David_chen7@...l.com, Kai-Heng Feng <kai.heng.feng@...onical.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Kailang Yang <kailang@...ltek.com>,
        Hui Wang <hui.wang@...onical.com>,
        Jian-Hong Pan <jian-hong@...lessm.com>,
        Tomas Espeleta <tomas.espeleta@...il.com>,
        Thomas Hebb <tommyhebb@...il.com>,
        Michał Mirosław <mirq-linux@...e.qmqm.pl>,
        alsa-devel@...a-project.org (moderated list:SOUND),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 2/2] ALSA: hda/realtek - Fix S3 pop noise on Dell Wyse

Commit 317d9313925c ("ALSA: hda/realtek - Set default power save node to
0") makes the ALC225 have pop noise on S3 resume and cold boot.

The previous fix enable power save node universally for ALC225, however
it makes some ALC225 systems unable to produce any sound.

So let's only enable power save node for the affected Dell Wyse
platform.

Fixes: 317d9313925c ("ALSA: hda/realtek - Set default power save node to 0")
BugLink: https://bugs.launchpad.net/bugs/1866357
Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
---
 sound/pci/hda/patch_realtek.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index dedf0c17f198..c34b8843bb25 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -5893,6 +5893,15 @@ static void alc233_alc662_fixup_lenovo_dual_codecs(struct hda_codec *codec,
 	}
 }
 
+static void alc225_fixup_s3_pop_noise(struct hda_codec *codec,
+				      const struct hda_fixup *fix, int action)
+{
+	if (action != HDA_FIXUP_ACT_PRE_PROBE)
+		return;
+
+	codec->power_save_node = 1;
+}
+
 /* Forcibly assign NID 0x03 to HP/LO while NID 0x02 to SPK for EQ */
 static void alc274_fixup_bind_dacs(struct hda_codec *codec,
 				    const struct hda_fixup *fix, int action)
@@ -6082,6 +6091,7 @@ enum {
 	ALC233_FIXUP_ACER_HEADSET_MIC,
 	ALC294_FIXUP_LENOVO_MIC_LOCATION,
 	ALC225_FIXUP_DELL_WYSE_MIC_NO_PRESENCE,
+	ALC225_FIXUP_S3_POP_NOISE,
 	ALC700_FIXUP_INTEL_REFERENCE,
 	ALC274_FIXUP_DELL_BIND_DACS,
 	ALC274_FIXUP_DELL_AIO_LINEOUT_VERB,
@@ -6969,6 +6979,12 @@ static const struct hda_fixup alc269_fixups[] = {
 			{ }
 		},
 		.chained = true,
+		.chain_id = ALC225_FIXUP_S3_POP_NOISE
+	},
+	[ALC225_FIXUP_S3_POP_NOISE] = {
+		.type = HDA_FIXUP_FUNC,
+		.v.func = alc225_fixup_s3_pop_noise,
+		.chained = true,
 		.chain_id = ALC269_FIXUP_HEADSET_MODE_NO_HP_MIC
 	},
 	[ALC700_FIXUP_INTEL_REFERENCE] = {
-- 
2.17.1