Re: [PATCH 2.6.18-mm2] acpi: add backlight support to the sony_acpi driver

Holger Macht
2006-10-02T10:30:40Z

On Sun 01. Oct - 17:19:12, Andrew Morton wrote:
> On Sat, 30 Sep 2006 19:08:10 +0200
> Alessandro Guido <alessandro.guido@gmail.com> wrote:
>
> > Make the sony_acpi use the backlight subsystem to adjust brightness value
> > instead of using the /proc/sony/brightness file.
> > (Other settings will still have a /proc/sony/... entry)
>
> umm, OK, but now how do I adjust my screen brightness? ;)
>
> I assume that cute userspace applications for controlling backlight
> brightness via the generic backlight driver either exist or are in
> progress? What is the status of that?

Most applications use HAL as a backend for display brightness these
days. HAL still supports the old interface in /proc for the different
brightness drivers, though, but the conversion to the new interface is on
my TODO and I will do it this week. So userspace should have fixed this
soon, so go ahead ;-)

Btw, there's a patchset from Matthew Garrett [1] sent some time ago which
also converts the asus_acpi, ibm_acpi and the toshiba_acpi drivers.

Regards,
Holger

[1] http://lkml.org/lkml/2006/4/18/28