[lm-sensors] PC8374L SuperIO chip

[lm-sensors] PC8374L SuperIO chip

[Marcin DrStorm Sliwinski]

Hey
Are there any chances for support for Winbond PC8374L chip ?
I have it on my Intel D965G mainboard (name on chip: 8347lf2-c/l1). 
It's SuperIO without internal sensors but with fan RPM measure and PWM
It has also Sensorpath interface (single-wire sensors interface).
Basic info can be found here:
http://www.winbond-usa.com/mambo/content/view/305/528/
http://www.national.com/nationaledge/jan04/article.html
In attachment i've put sensors-detect log (lm-sensors-2.10.2)
I was looking for some docs over the net but found only electric characteristics and pinout
without any data about internal registers.
I hope anyone will be able to code driver for this ;)

Best regards
DrStorm

[lm-sensors] PC8374L SuperIO chip

[Marcin DrStorm Śliwiński]

On Sat, 10 Mar 2007 18:16:50 +0100
Marcin DrStorm Sliwinski <drstorm at data.pl> wrote:


> In attachment i've put sensors-detect log (lm-sensors-2.10.2)
Sorry, forgot to add attachement

Best regards
DrStorm
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[lm-sensors] PC8374L SuperIO chip

[Marcin DrStorm Śliwiński]

On Sat, 10 Mar 2007 18:16:50 +0100
Marcin DrStorm Sliwinski <drstorm at data.pl> wrote:


> In attachment i've put sensors-detect log (lm-sensors-2.10.2)
Sorry, forgot to add attachement

Best regards
DrStorm
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[lm-sensors] PC8374L SuperIO chip

[Hans de Goede]

Marcin DrStorm Sliwinski wrote:
> Hey
> Are there any chances for support for Winbond PC8374L chip ?
> I have it on my Intel D965G mainboard (name on chip: 8347lf2-c/l1). 
> It's SuperIO without internal sensors but with fan RPM measure and PWM
> It has also Sensorpath interface (single-wire sensors interface).
> Basic info can be found here:
> http://www.winbond-usa.com/mambo/content/view/305/528/
> http://www.national.com/nationaledge/jan04/article.html
> In attachment i've put sensors-detect log (lm-sensors-2.10.2)
> I was looking for some docs over the net but found only electric characteristics and pinout
> without any data about internal registers.
> I hope anyone will be able to code driver for this ;)

I've done some looking on the web for this too, and I have found a full 
datasheet:
http://www.winbond-usa.com/products/winbond_products/pdfs/APC/PC8374L.pdf

Writing a driver should be quite doable. My only concern is that this 
chip breathes acpi / tastes like acpi. It very much seems designed to 
make implementing acpi easy (thermal zones instead of sensors, etc).

So I'm afraid we might have some collisions with acpi here. Either way I 
would like to write a little userspace test program (for starters) to 
see if we can get some info out of the chip.

Regards,

Hans

[lm-sensors] PC8374L SuperIO chip

[Marcin DrStorm Sliwinski]

On Sat, 10 Mar 2007 22:57:46 +0100
Hans de Goede <j.w.r.degoede at hhs.nl> wrote:

> Writing a driver should be quite doable. My only concern is that this 
> chip breathes acpi / tastes like acpi. It very much seems designed to 
> make implementing acpi easy (thermal zones instead of sensors, etc).

Bad part is that ACPI on my board don't show any data about sensors, thermal zones or fans.
Probably it wasn't implemented in bios (AMI, worst bios i ever saw)
Even on my old Toshiba laptop i get at least cpu temperature from ACPI.

> So I'm afraid we might have some collisions with acpi here. Either way I 
> would like to write a little userspace test program (for starters) to 
> see if we can get some info out of the chip.

If You write it I will be very happy to test it.
Basic info about my box (I don't know if You need it)
CPU: Core 2 Duo
OS: Gentoo Linux 64bit with 2.6.20.2 kernel

Best regards
DrStorm
P.S. Sorry for my bad english
P.S.2 Sorry for private message. I simply hit Reply

[lm-sensors] PC8374L SuperIO chip

[Hans de Goede]

Marcin DrStorm Sliwinski wrote:
> On Sat, 10 Mar 2007 22:57:46 +0100
> Hans de Goede <j.w.r.degoede at hhs.nl> wrote:
> 
>> Writing a driver should be quite doable. My only concern is that this 
>> chip breathes acpi / tastes like acpi. It very much seems designed to 
>> make implementing acpi easy (thermal zones instead of sensors, etc).
> 
> Bad part is that ACPI on my board don't show any data about sensors, thermal zones or fans.
> Probably it wasn't implemented in bios (AMI, worst bios i ever saw)
> Even on my old Toshiba laptop i get at least cpu temperature from ACPI.
> 
>> So I'm afraid we might have some collisions with acpi here. Either way I 
>> would like to write a little userspace test program (for starters) to 
>> see if we can get some info out of the chip.
> 
> If You write it I will be very happy to test it.
> Basic info about my box (I don't know if You need it)
> CPU: Core 2 Duo
> OS: Gentoo Linux 64bit with 2.6.20.2 kernel
> 

Okay,

I've done some reading of the datasheet and it seems that this is one of the
more complicated superio chips. This beast can do both io based io and 
memorymapped io. And I had to read the chapter on this 3 times to find out how 
it all works. (My fault I tried to quick read. just reading it linear helps)

Anyways I'm ready write a simple iopl using, run as root test program now. I'll 
see if I can find some time for that tomorrow and send it to you then.

Also it would greatly help / speed things up if I could get ssh access to that 
machine. In order for that to be really usefull I would need either to be able 
to sudo, or (to be in a group with) r/w access to /dev/port and /dev/mem

You can send me account info with the public key registered to this mail 
address at pgp.mit.edu .

Thanks & Regards,

Hans