ALSA: hda/realtek - fix the pop noise on headphone for lenovo laptops

We have several Lenovo laptops with the codec alc285, when playing
sound via headphone, we can hear click/pop noise in the headphone,
if we let the headphone share the DAC of NID 0x2 with the speaker,
the noise disappears.

The Lenovo laptops here include P52, P72, X1 yoda2 and X1 carbon.

I have tried to set preferred_dacs and override_conn, but neither of
them worked. Thanks for Kailang, he told me to invalidate the NID 0x3
through override_wcaps.

BugLink: https://bugs.launchpad.net/bugs/1805079
Cc: <stable@vger.kernel.org>
Signed-off-by: Kailang Yang <kailang@realtek.com>
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 1118fd1bbf1a281bb7f33b49212e7f8c0bb52107..e66da22272fdfe76375296024f16db3a38850a1b 100644 (file)
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -5358,6 +5358,16 @@ static void alc274_fixup_bind_dacs(struct hda_codec *codec,
        spec->gen.preferred_dacs = preferred_pairs;
 }
 
+/* The DAC of NID 0x3 will introduce click/pop noise on headphones, so invalidate it */
+static void alc285_fixup_invalidate_dacs(struct hda_codec *codec,
+                             const struct hda_fixup *fix, int action)
+{
+       if (action != HDA_FIXUP_ACT_PRE_PROBE)
+               return;
+
+       snd_hda_override_wcaps(codec, 0x03, 0);
+}
+
 /* for hda_fixup_thinkpad_acpi() */
 #include "thinkpad_helper.c"
 
@@ -5495,6 +5505,7 @@ enum {
        ALC255_FIXUP_DELL_HEADSET_MIC,
        ALC295_FIXUP_HP_X360,
        ALC221_FIXUP_HP_HEADSET_MIC,
+       ALC285_FIXUP_LENOVO_HEADPHONE_NOISE,
 };
 
 static const struct hda_fixup alc269_fixups[] = {
@@ -6362,6 +6373,10 @@ static const struct hda_fixup alc269_fixups[] = {
                .chained = true,
                .chain_id = ALC269_FIXUP_HEADSET_MIC
        },
+       [ALC285_FIXUP_LENOVO_HEADPHONE_NOISE] = {
+               .type = HDA_FIXUP_FUNC,
+               .v.func = alc285_fixup_invalidate_dacs,
+       },
 };
 
 static const struct snd_pci_quirk alc269_fixup_tbl[] = {
@@ -7035,6 +7050,11 @@ static const struct snd_hda_pin_quirk alc269_pin_fixup_tbl[] = {
                {0x12, 0x90a60130},
                {0x19, 0x03a11020},
                {0x21, 0x0321101f}),
+       SND_HDA_PIN_QUIRK(0x10ec0285, 0x17aa, "Lenovo", ALC285_FIXUP_LENOVO_HEADPHONE_NOISE,
+               {0x12, 0x90a60130},
+               {0x14, 0x90170110},
+               {0x19, 0x04a11040},
+               {0x21, 0x04211020}),
        SND_HDA_PIN_QUIRK(0x10ec0288, 0x1028, "Dell", ALC288_FIXUP_DELL1_MIC_NO_PRESENCE,
                {0x12, 0x90a60120},
                {0x14, 0x90170110},