[Bug 221583] Lenovo 82KU: keyboard backlight works via Fn+Space but no kbd_backlight LED device exposed

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=221583

--- Comment #24 from George (george.stafilidis@proton.me) ---
                            Method (KBLC, 1, Serialized)
                            {
                                Name (ICMD, Zero)
                                Name (IDTL, Zero)
                                Name (IDTH, Zero)
                                Name (RETD, Zero)
                                ICMD = (Arg0 & 0x0F)
                                IDTL = (Arg0 & 0xFFF0)
                                IDTL >>= 0x04
                                IDTH = (Arg0 & 0xFFFF0000)
                                IDTH >>= 0x10
                                RETD |= One
                                Switch (ToInteger (ICMD))
                                {
                                    Case (One)
                                    {
                                        Local0 = 0x02
                                        RETD |= Local0
                                    }
                                    Case (0x02)
                                    {
                                        Switch (ToInteger (IDTL))
                                        {
                                            Case (One)
                                            {
                                                Local0 = KLEN
                                                RETD |= Local0
                                            }
                                            Case (0x02)
                                            {
                                                Local0 = KLEN
                                                RETD |= Local0
                                            }
                                        }
                                    }
                                    Case (0x03)
                                    {
                                        Switch (ToInteger (IDTL))
                                        {
                                            Case (One)
                                            {
                                                Local0 = (IDTH & 0x03)
                                                KLEN = Local0
                                                RETD |= Local0
                                            }
                                            Case (0x02)
                                            {
                                                KLEN = IDTH
                                                RETD |= KLEN
                                            }
                                        }
                                    }
                                }
                                Return (ToInteger (RETD))
                            }

i think this is what you asking me to share with you. I think it is this
because I took a screenshot of what it did. The OSD notification when i applied
this version did not show up at all and only two options were showing in Quick
Settings: Off and High but both options were working when I clicked them (but
no osd). I think this is where Qwen got confused.

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