Re: [PATCH] platform/x86: asus-wmi: Support setting AIPT modes

[srinivas pandruvada <srinivas.pandruvada@linux.intel.com>]

On Wed, 2024-10-23 at 10:15 +0200, Luke Jones wrote:
> On Sun, 20 Oct 2024, at 9:05 PM, Armin Wolf wrote:
> > Am 20.10.24 um 08:50 schrieb Srinivas Pandruvada:
> > > 

[...]

Hi Luke,

> > > +        */
> > > +       adev = acpi_dev_get_first_match_dev("PNP0C14", "ATK", -
> > > 1);
> > 
> > Is there really no way of changing the AIPT mode through the WMI
> > interface?
> > I would prefer using the WMI interface if available, since the
> > firmware might
> > assume that FANL is only called through the WMI interface.
> > 
> > Do you have a acpidump from a affected device?
> > 
> > Thanks,
> > Armin Wolf
> > 
> > > +       if (adev) {
> > > +               acpi_handle handle = acpi_device_handle(adev);
> > > +
> > > +               acpi_dev_put(adev);
> > > +
> > > +               if (!acpi_has_method(handle, "FANL"))
> > > +                       return 0;
> 
> Quite a few laptops have this method available, but may not actually
> do anything. Such as the following:
> 
> FX517ZM-dsdt.dsl
> 92885:        Method (FANL, 1, Serialized)
> 92886-        {
> 92887-            Return (One)
> 92888-        }

Correct. On this laptop my changes will hurt. So we must use WMI.

> 
> 

> While this one does (zenbook duo):
> 
> UX8402.dsl
> 88837:                Method (FANL, 1, Serialized)
> 88838-                {
> 88839-                    ODV0 = Arg0

This will trigger to load a new thermal and power table based on the
condition set.

> 88840-                    If ((^^PC00.PEG1.PXP._STA == One))
> --
> 89041:                    Return (FANL (IIA0))
> 89042-                }
> 89043-
> 89044-                If ((Local0 == 0x4647574D))
> --
> 89604:                        FANL (IIA1)
> 89605-                        Return (One)
> 89606-                    }
> 89607-
> 
> I've discovered the majority of WMI methods, you can see them here:
> https://gitlab.com/asus-linux/reverse-engineering/-/blob/master/WMI_SPEC.md?ref_type=heads
> 
> There is a "whisper mode" WMI  method, but I've not done much around
> it.
> 
> I also have a large collection of DSL if that is helpful
> https://gitlab.com/asus-linux/reverse-engineering/-/tree/master/dsl-collection?ref_type=heads
> 
> It seems that because I have access only to the ROG dlls at this time
> I may have missed the WMI method: 0x00110019, this is likely what you
> need as it gets FANF, and sets FANL
> 
> ❯ rg 0x00110019 -B3 -A3 UX8402.dsl 
> 89281-                        Return (0x00010000)
> 89282-                    }
> 89283-
> 89284:                    If ((IIA0 == 0x00110019))
> 89285-                    {
> 89286-                        Local0 = FANF /* \_SB_.FANF */
> 89287-                        Local1 = 0x00070000
> --
> 89599-                        Return (One)
> 89600-                    }
> 89601-
> 89602:                    If ((IIA0 == 0x00110019))
> 89603-                    {
> 89604-                        FANL (IIA1)
> 89605-                        Return (One)
> 
> Hopefully this is helpful,


You have been very helpful. Thanks for that. I can make work with WMI
methods. Waiting for Asus to give feedback.

Currently on vacation for two weeks. Hope things gets sorted outed out
before I return.

Thanks,
Srinivas



> 
> Regards,
> Luke.
> 
> P.S: If any info is discovered that I am lacking in my repo it would
> be highly appreciated if a PR added it.
> 
> > > +               asus->acpi_mgmt_handle = handle;
> > > +               asus->asus_aipt_present = true;
> > > +               dev_info(dev, "ASUS Intelligent Performance
> > > Technology (AIPT) is present\n");
> > > +               /*
> > > +                * Set the mode corresponding to default Linux
> > > platform power
> > > +                * profile Balanced
> > > +                */
> > > +               asus_wmi_write_aipt_mode(asus, AIPT_STANDARD);
> > > +       }
> > > +
> > >         return 0;
> > >   }
> > >