Re: How to use the generic thermal sysfs.

Wei Ni
2012-07-27T10:48:42Z

On Fri, 2012-07-27 at 15:39 +0800, Zhang Rui wrote:
> On 五, 2012-07-27 at 09:30 +0200, Jean Delvare wrote:
> > On Fri, 27 Jul 2012 10:58:21 +0800, Wei Ni wrote:
> > > On Fri, 2012-07-27 at 09:21 +0800, Zhang Rui wrote:
> > > > is it possible to program the sensor at this time, in your own thermal
> > > > driver?
> > >
> > > Since we are using the generic thermal driver lm90.c, I'm not sure if we
> > > could program these limits in the generic driver, I think it's better to
> > > have a generic interface to set the limits, so I wish to add a
> > > callback .set_limits() in the generic thermal framework.
> >
> > I can confirm that hwmon drivers do not set limits, it is up to
> > user-space to do it if they want. So if there is a need to do so in the
> > kernel itself, a proper interface at the generic thermal framework
> > level seems appropriate.
> >
> oh, setting limits from userspace?
> I think you can program the senor when writing the trip point?
> with this patch,
> http://marc.info/?l=linux-acpi&m=134318814620429&w=2

Do you mean it can use .set_trip_temp() to set limits when writing the
trip point? But I think this callback is used to change the trip_temp,
it could not used to set the limits, in here the limit value is used to
trigger the interrupt.

>
> thanks,
> rui
>
>