HP ZBook 8 G2a 14 and 16 (SSIDs 0x103c:0x8f94, 0x103c:0x8f95) use
Realtek ALC245 codec with TAS2781 amplifier via I2C. These models
require inverted speaker mute LED handling.

The existing ALC245_FIXUP_HP_TAS2781_I2C_MUTE_LED quirk produces
reversed LED behavior: LED is off when speaker is muted and on when
unmuted. The new quirk corrects this polarity issue.

The code flow depends on HP pin detection:
- With HP pin: Uses HDA LED framework for full control interface support
- Without HP pin: Registers vmaster_mute hook for direct LED control

Both SSIDs share this quirk since they have the same hardware LED
configuration despite being different form factors.

Signed-off-by: Chris Chiu <chris.chiu@canonical.com>
---
Changes from v2:
- Simplified commit message to be more concise and brief
- Removed detailed explanation of "multiple models with same SSID" as
  it's not necessary for commit history
- Fixed comment block formatting (removed unbalanced comment marker)

 sound/hda/codecs/realtek/alc269.c | 50 +++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/sound/hda/codecs/realtek/alc269.c b/sound/hda/codecs/realtek/alc269.c
index b26ed9c1f09f..c1b10647110c 100644
--- a/sound/hda/codecs/realtek/alc269.c
+++ b/sound/hda/codecs/realtek/alc269.c
@@ -3776,6 +3776,15 @@ static void alc245_hp_spk_mute_led_update(void *private_data, int enabled)
 	alc_update_coef_idx(codec, 0x0b, 0x0c, val);
 }
 
+static void alc245_hp_spk_mute_led_update_inverted(void *private_data, int enabled)
+{
+	struct hda_codec *codec = private_data;
+	unsigned int val;
+
+	val = enabled ? 0x04 : 0x08; /* inverted: 0x04 led off, 0x08 led on */
+	alc_update_coef_idx(codec, 0x0b, 0x0c, val);
+}
+
 /* JD2: mute led GPIO3: micmute led */
 static void alc245_tas2781_i2c_hp_fixup_muteled(struct hda_codec *codec,
 					  const struct hda_fixup *fix, int action)
@@ -3804,6 +3813,40 @@ static void alc245_tas2781_i2c_hp_fixup_muteled(struct hda_codec *codec,
 		alc245_fixup_hp_mute_led_coefbit(codec, fix, action);
 	alc285_fixup_hp_coef_micmute_led(codec, fix, action);
 }
+
+/* Inverted LED quirk for HP laptops with TAS2781 amplifier via I2C.
+ * Speaker mute LED polarity is reversed vs standard behavior.
+ * Code flow depends on HP pin detection availability:
+ * - With HP pin: Uses HDA LED framework for full control support
+ * - Without HP pin: Registers vmaster_mute hook for direct control
+ */
+static void alc245_tas2781_i2c_hp_fixup_muteled_inverted(struct hda_codec *codec,
+						const struct hda_fixup *fix, int action)
+{
+	struct alc_spec *spec = codec->spec;
+	hda_nid_t hp_pin = alc_get_hp_pin(spec);
+	static const hda_nid_t conn[] = { 0x02 };
+
+	switch (action) {
+	case HDA_FIXUP_ACT_PRE_PROBE:
+		if (!hp_pin) {
+			spec->gen.vmaster_mute.hook = alc245_hp_spk_mute_led_update_inverted;
+			spec->gen.vmaster_mute_led = 1;
+		}
+		spec->gen.auto_mute_via_amp = 1;
+		snd_hda_override_conn_list(codec, 0x17, ARRAY_SIZE(conn), conn);
+		break;
+	case HDA_FIXUP_ACT_INIT:
+		if (!hp_pin)
+			alc245_hp_spk_mute_led_update_inverted(codec, !spec->gen.master_mute);
+		break;
+	}
+
+	tas2781_fixup_txnw_i2c(codec, fix, action);
+	if (hp_pin)
+		alc245_fixup_hp_mute_led_coefbit(codec, fix, action);
+	alc285_fixup_hp_coef_micmute_led(codec, fix, action);
+}
 /*
  * Clear COEF 0x0d (PCBEEP passthrough) bit 0x40 where BIOS sets it wrongly
  * at PM resume
@@ -4164,6 +4207,7 @@ enum {
 	ALC256_FIXUP_VAIO_RPL_MIC_NO_PRESENCE,
 	ALC245_FIXUP_HP_TAS2781_SPI_MUTE_LED,
 	ALC245_FIXUP_HP_TAS2781_I2C_MUTE_LED,
+	ALC245_FIXUP_HP_TAS2781_I2C_MUTE_LED_INVERTED,
 	ALC288_FIXUP_SURFACE_SWAP_DACS,
 	ALC236_FIXUP_HP_MUTE_LED_MICMUTE_GPIO,
 	ALC233_FIXUP_LENOVO_GPIO2_MIC_HOTKEY,
@@ -6134,6 +6178,10 @@ static const struct hda_fixup alc269_fixups[] = {
 		.chained = true,
 		.chain_id = ALC285_FIXUP_THINKPAD_HEADSET_JACK,
 	},
+	[ALC245_FIXUP_HP_TAS2781_I2C_MUTE_LED_INVERTED] = {
+		.type = HDA_FIXUP_FUNC,
+		.v.func = alc245_tas2781_i2c_hp_fixup_muteled_inverted,
+	},
 	[ALC287_FIXUP_LENOVO_YOGA_PRO7] = {
 		.type = HDA_FIXUP_FUNC,
 		/* Reuse the DAC routing selected for ThinkPad X1 Gen7 */
@@ -7361,6 +7409,8 @@ static const struct hda_quirk alc269_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x103c, 0x8f42, "HP ZBook 8 G2a 14W", ALC245_FIXUP_HP_TAS2781_I2C_MUTE_LED),
 	SND_PCI_QUIRK(0x103c, 0x8f57, "HP Trekker G7JC", ALC287_FIXUP_CS35L41_I2C_2),
 	SND_PCI_QUIRK(0x103c, 0x8f62, "HP ZBook 8 G2a 16W", ALC245_FIXUP_HP_TAS2781_I2C_MUTE_LED),
+	SND_PCI_QUIRK(0x103c, 0x8f94, "HP ZBook 8 G2a 14", ALC245_FIXUP_HP_TAS2781_I2C_MUTE_LED_INVERTED),
+	SND_PCI_QUIRK(0x103c, 0x8f95, "HP ZBook 8 G2a 16", ALC245_FIXUP_HP_TAS2781_I2C_MUTE_LED_INVERTED),
 	SND_PCI_QUIRK(0x1043, 0x1024, "ASUS Zephyrus G14 2025", ALC285_FIXUP_ASUS_GA403U_HEADSET_MIC),
 	SND_PCI_QUIRK(0x1043, 0x1032, "ASUS VivoBook X513EA", ALC256_FIXUP_ASUS_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x1043, 0x1034, "ASUS GU605C", ALC285_FIXUP_ASUS_GU605_SPI_SPEAKER2_TO_DAC1),
-- 
2.43.0