Re: Thinkpad volume control buttons

[Jared McNeill <jmcneill%invisible.ca@localhost>]

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Hi Ian --

For thinkpads, volume up and down events are handled by the wskbd(4) 
driver since the buttons send keyboard events:

  http://nxr.netbsd.org/xref/src/sys/dev/wscons/wskbd.c#1513

The mute button is hard-wired so no special handling is required.

The automatic handling of the volume up and down buttons is bypassed when 
X has the keyboard in raw mode.

Cheers,
Jared


On Fri, 21 Oct 2011, Ian D. Leroux wrote:

> Running a few-months-old amd64/current on a Lenovo X201, I recently set
> about hooking up the volume control hot keys (XF86AudioRaiseVolume,
> XF86AudioLowerVolume, XF86AudioMute) to mixerctl with some shell
> scripts, and along the way noticed that the mute button (but not the
> volume up/down buttons) works by default, even at the console.  Is that
> being handled by the thinkpad* driver?  Or some other driver?  If
> someone tells me where to look I might at some point try to add volume
> control support to the existing mute/unmute support, unless there's a
> good reason not to.
>
> Curiously yours,
>
> --IDL
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