[Bug 222044] hp-wmi: Mute and mic-mute LEDs not supported on HP Laptop 15-fc0xxx (board 8DC9)

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=222044

Piyush (aryanbabupiyushbabu@gmail.com) changed:

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                 CC|                            |aryanbabupiyushbabu@gmail.c
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--- Comment #3 from Piyush (aryanbabupiyushbabu@gmail.com) ---
(In reply to Zhang Heng from comment #2)
> sudo hda-verb /dev/snd/hwC0D0 0x01 0x715 0x03
> 
> 
> sudo hda-verb /dev/snd/hwC0D0 0x01 0x715 0x02
> 
> 
> sudo hda-verb /dev/snd/hwC0D0 0x01 0x715 0x01
> 
> sudo hda-verb /dev/snd/hwC0D0 0x01 0x715 0x00
> 
> 
> The x in hwCXD0 depends on whether your sound card is card0, card1, or
> card2. Check whether these GPIO settings are effective.

Hi Zhang,

I tested these verbs on card 1 (/dev/snd/hwC1D0, Realtek ALC236).

Results:
1. The GPIO mask (0x716) and direction (0x717) on root node 0x01 need to be
explicitly initialized first:
   sudo hda-verb /dev/snd/hwC1D0 0x01 0x716 0x0f
   sudo hda-verb /dev/snd/hwC1D0 0x01 0x717 0x0f

2. The mic-mute LED (F8) is verified to work cleanly on GPIO 0 using active-low
logic:
   - Turn ON:  sudo hda-verb /dev/snd/hwC1D0 0x01 0x715 0x00
   - Turn OFF: sudo hda-verb /dev/snd/hwC1D0 0x01 0x715 0x01

3. The keyboard does have a physical LED indicator on the F5 key (speaker
mute), but it did not react to any standard GPIO bit toggles (0x02, 0x04, etc.)
on node 0x01.

Could you provide any hints or specific coefficient/verb sequences to test for
the speaker mute LED on this ALC236 revision (Subsystem ID 103c:8dc9)?
Alternatively, is there an existing ALC236 fixup in patch_realtek.c you'd
recommend building against to test both LEDs?

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