Front LED on Mac mini G4

Front LED on Mac mini G4

[Florian Fainelli]

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Hi all,

I would like to know whether it is possible or not to modify the via-pmu-led 
driver to make it work with the Mac mini G4 front LED, is there anything 
particular with this model ?

By the way, why is this driver only available as in-kernel and not module ?

Thanks in advance for your answer.
-- 
Regards, Florian

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Re: Front LED on Mac mini G4

[Johannes Berg]

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On Tue, 2007-02-20 at 14:33 +0100, Florian Fainelli wrote:

> I would like to know whether it is possible or not to modify the via-pmu-led 
> driver to make it work with the Mac mini G4 front LED, is there anything 
> particular with this model ?

Not sure. If it's a PowerMac10,1 I think it should work.

> By the way, why is this driver only available as in-kernel and not module ?

Because it's just an option of the via-pmu driver.

johannes

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Re: Front LED on Mac mini G4

[Florian Fainelli]

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Hi Johannes,

Le mardi 20 février 2007, Johannes Berg a écrit :
> On Tue, 2007-02-20 at 14:33 +0100, Florian Fainelli wrote:
> > I would like to know whether it is possible or not to modify the
> > via-pmu-led driver to make it work with the Mac mini G4 front LED, is
> > there anything particular with this model ?
>
> Not sure. If it's a PowerMac10,1 I think it should work.

It is a PowerMac10,1. After bypassing some device checks in via_pmu_led_init, 
I tried : echo 0 > /sys/class/leds/pmu-front-led/brightness

which resulted in : PMU: bad reply len 85 and the brightness not changed of 
course.

the check is in via-pmu.c line 1500

Do you know what could cause this reply ?
>
> > By the way, why is this driver only available as in-kernel and not module
> > ?
>
> Because it's just an option of the via-pmu driver.
>
> johannes



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Re: Front LED on Mac mini G4

[Johannes Berg]

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On Tue, 2007-02-20 at 18:35 +0100, Florian Fainelli wrote:

> It is a PowerMac10,1. After bypassing some device checks in via_pmu_led_init, 
> I tried : echo 0 > /sys/class/leds/pmu-front-led/brightness
> 
> which resulted in : PMU: bad reply len 85 and the brightness not changed of 
> course.

Hm, ok.

> the check is in via-pmu.c line 1500
> 
> Do you know what could cause this reply ?

No, I don't really know the PMU that well.

johannes

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Re: Front LED on Mac mini G4

[Benjamin Herrenschmidt]

On Tue, 2007-02-20 at 14:33 +0100, Florian Fainelli wrote:
> Hi all,
> 
> I would like to know whether it is possible or not to modify the via-pmu-led 
> driver to make it work with the Mac mini G4 front LED, is there anything 
> particular with this model ?

Last I tried, the usual LED control PMU command didn't work on the Mac
Mini. I don't know if there's an alternative.

> By the way, why is this driver only available as in-kernel and not module ?

Ben.