Winbound W83627EHF sensor

Winbound W83627EHF sensor

[Carlos Eduardo Medaglia Dyonisio]

Hi all!

I have an A8V-E Deluxe, with W83627EHF sensor, and I've read in
http://secure.netroedge.com/~lm78/newdrivers.html that has a driver for it,
but it's under development.

I've downloaded the patch, and I've applied it to linux-2.6.12-rc4, and it
works fine, but it just shows the temperature and fan speeds, as in the
comments of that web page.

I'd like to help the development of this driver, and I'd like to know what
should I do to help us. ;)

Thanks,
Cadu

Winbound W83627EHF sensor

[Jean Delvare]

Hi Cadu,

> Thank you. I'm reading the datasheet, and I'm going to work on this
> driver. I'll send a patch and news when I have it... :)
>
> I'm thinking to put on my web page the status of the development of
> this driver, with the patches and some other things.

Sounds great! Let us know when you have something online, and we'll link
to your site so that users are more likely to find it and test your code.

> I'll tell you when I have some news and/or questions.

Sure, no problem :)

--
Jean Delvare

Winbound W83627EHF sensor

[Jean Delvare]

Hi Carlos,

> I have an A8V-E Deluxe, with W83627EHF sensor, and I've read in
> http://secure.netroedge.com/~lm78/newdrivers.html that has a driver for it,
> but it's under development.
>
> I've downloaded the patch, and I've applied it to linux-2.6.12-rc4, and it
> works fine, but it just shows the temperature and fan speeds, as in the
> comments of that web page.
>
> I'd like to help the development of this driver, and I'd like to know what
> should I do to help us. ;)

I am the author of the preliminary w83627ehf driver.

There are several ways you can help with the further developement of the
driver.

1* Hardware donation, e.g. a motherboard with a Winbond W83627EHF chip,
with or without additional stuff (CPU, memory modules...), or something
else that can be of any use to us for the development effort. I may do
the work myself in exchange of a hardware donation, contact me directly
if you are interested.

2* Money, if you want to hire someone to do the development work. I
cannot legally do that, but other developers may.

3* Code, if you can write Linux kernel code (C). If you go that way, we
will of course try to help you when you face problems and have questions.

--
Jean Delvare

Winbound W83627EHF sensor

[Cadu]

On 5/11/05, Jean Delvare <khali@linux-fr.org> wrote:
> And you have it. I am not working on this driver anymore, which is the
> very reason why I released it unfinished.
> 
> If you go on working on this driver, we can list you on our new drivers
> page.

Thank you. I'm reading the datasheet, and I'm going to work on this
driver. I'll send a patch and news when I have it... :)

I'm thinking to put on my web page the status of the development of
this driver, with the patches and some other things.

I'll tell you when I have some news and/or questions.

Regards,
Cadu

Winbound W83627EHF sensor

[Jean Delvare]

Hi Cadu,

> > 3* Code, if you can write Linux kernel code (C). If you go that way, we
> > will of course try to help you when you face problems and have questions.
>
> I'd like to help with code. I've wrote a webcam driver to Linux, so I
> have some experience. I'd like to know where to start! :)

Pick the datasheet here:
http://archives.andrew.net.au/lm-sensors/pdfe5IBpZipZu.pdf

Reminder for your future work: do NOT trust that datasheet like holy
words. I have found errors already, and there may be more.

Then start from my version of the driver (be sure to start from the
latest version!) and add the missing functions (voltage inputs, VID/VRM,
PWM outputs). My w83627ehf code is based on the w83627hf driver in the
first place, so you can probaly find inspiration there. See how this
other driver handles the missing features, copy to the w83627ehf driver
and edit to match the datasheet. Then recompile and test your new driver.

Note that "sensors" won't show anything until libsensors knows about
the new features. I invite you to first make sure that the driver works
OK by manually reading and writing values in /sys/bus/i2c/devices/*.
Once you have tested this, you can edit the code of libsensors and the
sensors program (both in the lm_sensors package) to handle the new
features.

That's it for the big plan. Now if you have more precise questions, do
not hesitate. Oh, and please answer to the mailing-list rather than me
directly, so that others can voice in.

Thanks,
--
Jean Delvare

Winbound W83627EHF sensor

[Jean Delvare]

Hi Cadu,

> Where is the latest version? I have a patch to linux-2.6.12-rc3. I
> don't know if it is the latest version.
> Are you hacking this driver now? I'm asking that because if the answer
> is yes, we can change the same thing at the same time, and maybe it
> will not be a good thing.

The reference version is the one in Greg KH's i2c tree:
http://www.kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/patches/i2c/i2c-w83627ehf.patch

On top of which you have to apply a cleanup patch:
http://www.kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/patches/i2c/i2c-w83627ehf-cleanup.patch

And you have it. I am not working on this driver anymore, which is the
very reason why I released it unfinished.

If you go on working on this driver, we can list you on our new drivers
page.

Thanks,
-- 
Jean Delvare

Winbound W83627EHF sensor

[Cadu]

On 5/11/05, Jean Delvare <khali@linux-fr.org> wrote:
> > I'd like to help with code. I've wrote a webcam driver to Linux, so I
> > have some experience. I'd like to know where to start! :)
> 
> Pick the datasheet here:
> http://archives.andrew.net.au/lm-sensors/pdfe5IBpZipZu.pdf

Ok... Thanks!

> Reminder for your future work: do NOT trust that datasheet like holy
> words. I have found errors already, and there may be more.

Oh.. I know. I have experience with bad datasheets too... :)

> Then start from my version of the driver (be sure to start from the
> latest version!) 

Where is the latest version? I have a patch to linux-2.6.12-rc3. I
don't know if it is the latest version.
Are you hacking this driver now? I'm asking that because if the answer
is yes, we can change the same thing at the same time, and maybe it
will not be a good thing.

> and add the missing functions (voltage inputs, VID/VRM,
> PWM outputs). My w83627ehf code is based on the w83627hf driver in the
> first place, so you can probaly find inspiration there. See how this
> other driver handles the missing features, copy to the w83627ehf driver
> and edit to match the datasheet. Then recompile and test your new driver.
> 
> Note that "sensors" won't show anything until libsensors knows about
> the new features. I invite you to first make sure that the driver works
> OK by manually reading and writing values in /sys/bus/i2c/devices/*.
> Once you have tested this, you can edit the code of libsensors and the
> sensors program (both in the lm_sensors package) to handle the new
> features.

I'll do that.

> That's it for the big plan. Now if you have more precise questions, do
> not hesitate. Oh, and please answer to the mailing-list rather than me
> directly, so that others can voice in.

Ok. I will start today!

Thank you!
Cadu