ALSA: hda/realtek - fixed headset Mic not show

ALC256 run on SOF mode. Boot with plugged headset, the Headset Mic will be gone.
Plugged headset after boot. It had partial fail with Headset Mic detect.
Add spec->en_3kpull_low = false will solve all issues.
Signed-off-by: Kailang Yang <kailang@realtek.com>
Link: https://lore.kernel.org/r/c8b638590c5f45a6a5c6aeb20c31fd5b@realtek.comSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_realtek.c

@@ -6527,6 +6527,20 @@ static void alc295_fixup_chromebook(struct hda_codec *codec,
 	}
 }
 
+static void alc256_fixup_chromebook(struct hda_codec *codec,
+				    const struct hda_fixup *fix, int action)
+{
+	struct alc_spec *spec = codec->spec;
+
+	switch (action) {
+	case HDA_FIXUP_ACT_PRE_PROBE:
+		spec->gen.suppress_auto_mute = 1;
+		spec->gen.suppress_auto_mic = 1;
+		spec->en_3kpull_low = false;
+		break;
+	}
+}
+
 static void alc_fixup_disable_mic_vref(struct hda_codec *codec,
 				  const struct hda_fixup *fix, int action)
 {
@@ -7505,6 +7519,7 @@ enum {
 	ALC285_FIXUP_ASUS_GU605_SPI_2_HEADSET_MIC,
 	ALC285_FIXUP_ASUS_GU605_SPI_SPEAKER2_TO_DAC1,
 	ALC287_FIXUP_LENOVO_THKPAD_WH_ALC1318,
+	ALC256_FIXUP_CHROME_BOOK,
 };
 
 /* A special fixup for Lenovo C940 and Yoga Duet 7;
@@ -9787,6 +9802,12 @@ static const struct hda_fixup alc269_fixups[] = {
 		.chained = true,
 		.chain_id = ALC269_FIXUP_THINKPAD_ACPI
 	},
+	[ALC256_FIXUP_CHROME_BOOK] = {
+		.type = HDA_FIXUP_FUNC,
+		.v.func = alc256_fixup_chromebook,
+		.chained = true,
+		.chain_id = ALC225_FIXUP_HEADSET_JACK
+	},
 };
 
 static const struct snd_pci_quirk alc269_fixup_tbl[] = {
@@ -10753,6 +10774,7 @@ static const struct hda_model_fixup alc269_fixup_models[] = {
 	{.id = ALC295_FIXUP_HP_X360, .name = "alc295-hp-x360"},
 	{.id = ALC225_FIXUP_HEADSET_JACK, .name = "alc-headset-jack"},
 	{.id = ALC295_FIXUP_CHROME_BOOK, .name = "alc-chrome-book"},
+	{.id = ALC256_FIXUP_CHROME_BOOK, .name = "alc-2024y-chromebook"},
 	{.id = ALC299_FIXUP_PREDATOR_SPK, .name = "predator-spk"},
 	{.id = ALC298_FIXUP_HUAWEI_MBX_STEREO, .name = "huawei-mbx-stereo"},
 	{.id = ALC256_FIXUP_MEDION_HEADSET_NO_PRESENCE, .name = "alc256-medion-headset"},