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ALSA: hda/realtek: Enable mute LED on HP Laptop 15-dy0xxx

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The mute LED on the HP Laptop 15-dy0xxx (PCI SSID 103c:864f, Realtek
ALC236) does not work, because the machine has no entry in the quirk
table. No fixup is applied, so no mute LED classdev is registered and
nothing ever drives the LED.

The LED is controlled by COEF index 0x07, bit 0. This was verified on
the hardware with hda-verb: setting the bit lights the mute LED and
clearing it turns the LED off.

  hda-verb /dev/snd/hwC0D0 0x20 SET_COEF_INDEX 0x07
  hda-verb /dev/snd/hwC0D0 0x20 SET_PROC_COEF 0x1     # LED on
  hda-verb /dev/snd/hwC0D0 0x20 SET_PROC_COEF 0x200   # LED off

That is exactly what ALC236_FIXUP_HP_MUTE_LED_COEFBIT2 configures, and
the closely related HP Laptop 15-dw0xxx (103c:85f0) already uses it.
Bit 9 (0x200) is set by default on this board and is preserved by the
fixup's read-modify-write.

Tested on an HP Laptop 15-dy0xxx (SKU 7FU54UA#ABA, board 864F,
BIOS F.40).

Signed-off-by: Carl Quist <equalizerjr@gmail.com>
Link: https://lore.kernel.org/CAOtcGaxXndKxTK5MVSEcmF-LUy+V51K7fhE=qvLA+VvW5ZyCNA@mail.gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Carl Quist 2026-08-06 11:47:18 +02:00 committed by Takashi Iwai
parent 253010acfc
commit eb2b516900
1 changed files with 1 additions and 0 deletions
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sound/hda/codecs/realtek/alc269.c
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@ -7242,6 +7242,7 @@ static const struct hda_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK(0x103c, 0x860c, "HP ZBook 17 G6", ALC285_FIXUP_HP_GPIO_AMP_INIT),
SND_PCI_QUIRK(0x103c, 0x860f, "HP ZBook 15 G6", ALC285_FIXUP_HP_GPIO_AMP_INIT),
SND_PCI_QUIRK(0x103c, 0x861f, "HP Elite Dragonfly G1", ALC285_FIXUP_HP_GPIO_AMP_INIT),
SND_PCI_QUIRK(0x103c, 0x864f, "HP Laptop 15-dy0xxx", ALC236_FIXUP_HP_MUTE_LED_COEFBIT2),
SND_PCI_QUIRK(0x103c, 0x869d, "HP", ALC236_FIXUP_HP_MUTE_LED),
SND_PCI_QUIRK(0x103c, 0x86c1, "HP Laptop 15-da3001TU", ALC236_FIXUP_HP_MUTE_LED_COEFBIT2),
SND_PCI_QUIRK(0x103c, 0x86c7, "HP Envy AiO 32", ALC274_FIXUP_HP_ENVY_GPIO),