[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

--- Comment #4 from Piyush (aryanbabupiyushbabu@gmail.com) ---
Update:
I tested the vendor processing coefficients on node 0x20, and the F5 speaker
mute LED has been successfully identified!

Speaker Mute LED (F5):
- Select COEF index 0x07: hda-verb /dev/snd/hwC1D0 0x20 0x500 0x07
- Turn ON:  hda-verb /dev/snd/hwC1D0 0x20 0x400 0x01
- Turn OFF: hda-verb /dev/snd/hwC1D0 0x20 0x400 0x00

Summary of both working controls on ALC236 (103c:8dc9):
1. Mic Mute LED (F8): Node 0x01, GPIO 0 (active-low)
   - Setup: 0x716 0x0f, 0x717 0x0f
   - ON: 0x715 0x00
   - OFF: 0x715 0x01
2. Speaker Mute LED (F5): Node 0x20, COEF 0x07
   - ON: 0x500 0x07, 0x400 0x01
   - OFF: 0x500 0x07, 0x400 0x00

This combination appears identical to the alc236_fixup_hp_mute_led / coef 0x07
fixup pattern. Looking forward to testing a patch against patch_realtek.c when
available.

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