backlight device, suspend/resume...

[Michael 'Mickey' Lauer]

Am Montag 07 Juli 2008 12:21:11 schrieb Carsten Haitzler:
> in:
> /sys/devices/platform/s3c2440-i2c/i2c-adapter/i2c-0/0-0073/backlight/pcf506
>33-bl
>
> ...
> * backlight is ON and:
> # cat bl_power
> 0
>
> this seems reversed logic here. shouldn't 1 == on, 0 == off? the logic
> seems to continue its inversness when u:

Been ranting about this for years now -- back then kernel developers decided 
they want to have it that way and now we have to cope with it in userland.

> * now resume (press power)
> #cat brightness
> 21
> # cat actual_brightness
> 63
>
> seems wrong to me. the brightness should be restored on resume exactly as
> it was left.

Agreed.

> the same happens to bl_power. if it was off on suspend - it
> should be off on resume (also i guess he inverse logic above fixed too).

Agreed (minus fixing the inverse logic, since this is a decision made by the 
class device maintainers)

> am i right? or am i missing something?
>
> also while i am at it...
> /sys/devices/platform/neo1973-resume.0/resume_reason
>
> never seems it indicate the resume reason - no entry has an '*' next to it
> ever... :(

D'oh, that's wrong.

> are these known issues?

The bugtracker doesn't seem to know about it.

-- 
:M: