[PATCH] ALSA: hda/realtek: Add quirk for HP Laptop 15-fd0039nt speaker mute LED

HP Laptop 15-fd0039nt (SSID 103c:8bb6) has a speaker mute LED that is
controlled via VREF100 on NID 0x1a. Unlike standard implementations, this
device requires PIN_VREF100 (0x24) to turn the LED on and PIN_IN (0x20)
to turn it off, with active-high polarity.

The existing ALC236_FIXUP_HP_MICMUTE_LED_ONLY quirk only handles the
microphone mute LED, so this patch adds a new fixup
ALC236_FIXUP_HP_15_FD0XXX that covers both:
- Mic mute LED via GPIO0 (active-low)
- Speaker mute LED via NID 0x1a VREF100

The patch also adds a custom power_filter to ensure the pin remains
powered during suspend, and a shutdown hook to restore the pin state.

Tested-by: Habil Eren Türker <[email protected]>
Signed-off-by: Habil Eren Türker <[email protected]>
---
 sound/hda/codecs/realtek/alc269.c | 59 ++++++++++++++++++++++++++-----
 1 file changed, 50 insertions(+), 9 deletions(-)

diff --git a/sound/hda/codecs/realtek/alc269.c b/sound/hda/codecs/realtek/alc269.c
index 01b87267f..d19935be3 100644
--- a/sound/hda/codecs/realtek/alc269.c
+++ b/sound/hda/codecs/realtek/alc269.c
@@ -1364,16 +1364,57 @@ static void alc269_fixup_hp_gpio_led(struct hda_codec *codec,
 	alc_fixup_hp_gpio_led(codec, action, 0x08, 0x10);
 }
 
-static void alc236_fixup_hp_micmute_led_only(struct hda_codec *codec,
-				const struct hda_fixup *fix, int action)
+/* Patch for HP 15-fd0xxx (8BB6) Speaker Mute LED & Mic-Mute LED */
+
+static void hp_8bb6_shutup(struct hda_codec *codec)
+{
+	snd_hda_shutup_pins(codec);
+	snd_hda_set_pin_ctl(codec, 0x1a,
+			   snd_hda_codec_get_pin_target(codec, 0x1a));
+}
+
+static unsigned int hp_8bb6_power_filter(struct hda_codec *codec,
+					  hda_nid_t nid,
+					  unsigned int power_state)
+{
+	if (nid == 0x1a)
+		return AC_PWRST_D0;
+	return snd_hda_gen_path_power_filter(codec, nid, power_state);
+}
+
+static int hp_8bb6_speaker_mute_led_set(struct led_classdev *led_cdev,
+					 enum led_brightness brightness)
+{
+	struct hda_codec *codec = dev_to_hda_codec(led_cdev->dev->parent);
+	unsigned int val = (brightness == LED_OFF) ? PIN_IN : PIN_VREF100;
+
+	snd_hda_set_pin_ctl_cache(codec, 0x1a, val);
+	return 0;
+}
+
+static void alc236_fixup_hp_15_fd0xxx(struct hda_codec *codec,
+				      const struct hda_fixup *fix,
+				      int action)
 {
 	struct alc_spec *spec = codec->spec;
 
-	if (action == HDA_FIXUP_ACT_PRE_PROBE)
+	switch (action) {
+	case HDA_FIXUP_ACT_PRE_PROBE:
 		spec->micmute_led_polarity = 1;
-	alc_fixup_hp_gpio_led(codec, action, 0x00, 0x01);
-}
+		alc_fixup_hp_gpio_led(codec, action, 0x00, 0x01);
+		spec->mute_led_polarity = 0;
+		snd_hda_gen_add_mute_led_cdev(codec, hp_8bb6_speaker_mute_led_set);
+		codec->power_filter = hp_8bb6_power_filter;
+		codec->power_save_node = 0;
+		spec->shutup = hp_8bb6_shutup;
+		break;
 
+	case HDA_FIXUP_ACT_INIT:
+		if (spec->gen.vmaster_mute.hook)
+			snd_hda_sync_vmaster_hook(&spec->gen.vmaster_mute);
+		break;
+	}
+}
 static void alc285_fixup_hp_gpio_led(struct hda_codec *codec,
 				const struct hda_fixup *fix, int action)
 {
@@ -4096,7 +4137,7 @@ enum {
 	ALC236_FIXUP_HP_GPIO_LED,
 	ALC236_FIXUP_HP_MUTE_LED,
 	ALC236_FIXUP_HP_MUTE_LED_MICMUTE_VREF,
-	ALC236_FIXUP_HP_MICMUTE_LED_ONLY,
+	ALC236_FIXUP_HP_15_FD0XXX,
 	ALC236_FIXUP_LENOVO_INV_DMIC,
 	ALC298_FIXUP_SAMSUNG_AMP,
 	ALC298_FIXUP_SAMSUNG_AMP_V2_2_AMPS,
@@ -5839,9 +5880,9 @@ static const struct hda_fixup alc269_fixups[] = {
 		.type = HDA_FIXUP_FUNC,
 		.v.func = alc236_fixup_hp_mute_led_micmute_gpio,
 	},
-	[ALC236_FIXUP_HP_MICMUTE_LED_ONLY] = {
+	[ALC236_FIXUP_HP_15_FD0XXX] = {
 		.type = HDA_FIXUP_FUNC,
-		.v.func = alc236_fixup_hp_micmute_led_only,
+		.v.func = alc236_fixup_hp_15_fd0xxx,
 	},
 	[ALC236_FIXUP_LENOVO_INV_DMIC] = {
 		.type = HDA_FIXUP_FUNC,
@@ -7345,7 +7386,7 @@ static const struct hda_quirk alc269_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x103c, 0x8b97, "HP", ALC236_FIXUP_HP_MUTE_LED_MICMUTE_VREF),
 	SND_PCI_QUIRK(0x103c, 0x8bb3, "HP Slim OMEN", ALC287_FIXUP_CS35L41_I2C_2),
 	SND_PCI_QUIRK(0x103c, 0x8bb4, "HP Slim OMEN", ALC287_FIXUP_CS35L41_I2C_2),
-	SND_PCI_QUIRK(0x103c, 0x8bb6, "HP Laptop 15-fd0039nt", ALC236_FIXUP_HP_MICMUTE_LED_ONLY),
+	SND_PCI_QUIRK(0x103c, 0x8bb6, "HP Laptop 15-fd0039nt", ALC236_FIXUP_HP_15_FD0XXX),
 	SND_PCI_QUIRK(0x103c, 0x8bbe, "HP Victus 16-r0xxx (MB 8BBE)", ALC245_FIXUP_HP_MUTE_LED_COEFBIT),
 	SND_PCI_QUIRK(0x103c, 0x8bc8, "HP Victus 15-fa1xxx", ALC245_FIXUP_HP_MUTE_LED_COEFBIT),
 	SND_PCI_QUIRK(0x103c, 0x8bcd, "HP Omen 16-xd0xxx", ALC245_FIXUP_HP_MUTE_LED_V1_COEFBIT),
-- 
2.47.3