IBM T23 volume keys handling

[Nate Lawson]

Fabian Keil wrote:
> "Michał Frynas" <mfrynas at gmail.com> wrote:
> 
>> can someone of you guys, point me a place within the kernel sources, where
>> the volume up/volume down keys are handled?
>> In more specific I'd like to find a place where the volume keys press event
>> is being handled, and add there something like this:
>>
>> devctl_notify("ACPI_CUSTOM", "ACPI_VOLUME", (arg > val) ? "ACPI Volume Up" :
>> "ACPI Volume Down", NULL);
> 
> Are you already aware of the events mentioned in acpi_ibm(4)?
> 
> Quote:
> 
> |   devd(8) Events
> |     Hotkey events received by devd(8) provide the following information:
> |
> |           system     "ACPI"
> |           subsystem  "IBM"
> |           type       The source of the event in the ACPI namespace.  The
> |                      value depends on the model.
> |           notify     Event code (see below).
> |
> |     Depending on the ThinkPad model, event codes may vary.  On a ThinkPad
> |     T41p these are as follows:
> |
> |           0x01       Fn + F1
> |[...]
> |           0x15       Volume Up
> |           0x16       Volume Down
> 
> Either way, I think you're looking for:
> /usr/src/sys/dev/acpi_support/acpi_ibm.c

I had a T23 and never looked into how closely acpi_ibm could see the
volume buttons.  They are handled by SMM mostly, meaning they work just
fine without any acpi_ibm loaded.

So what's your problem?

-- 
Nate