Re: [PATCH] thinkpad_acpi: Add support for keyboard backlight

[Pavel Machek]

Hi1

> This patch adds support for controlling keyboard backlight via standard
> linux led class interface (::kbd_backlight). It uses ACPI HKEY device with
> MLCG and MLCS methods.
> 
> Signed-off-by: Pali Rohár <pali.rohar@xxxxxxxxx>
> Tested-by: Fabio D'Urso <fabiodurso@xxxxxxxxxx>

On my thinkpad, keyboard light is controlled by

/sys/class/leds/tpacpi\:\:thinklight/brightness

(that's a bad name).

On n900, it is .../leds/kb0..kb6. Now we'd have kbd_backlight. I guess
we should standartize on one name for this light, so that userspace
has the chance to handle it automatically...

Also, neccessity of workqueues for LED setting is slowly being removed
from the kernel, see LED mailing list for details.

Thanks,
									Pavel
									
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