Am Montag, den 28.02.2011, 10:42 -0800 schrieb Guenter Roeck:
> On Mon, Feb 28, 2011 at 12:50:45PM -0500, Lucas Stach wrote:
> > Hello all,
> >
> > let me revive this discussion a bit. After reading some things about the
> > matter I think the way to go is to use Intels thermal framework. It
> > should be easy to add the needed temp_get and fan_set functions to the
> > affected hwmon drivers.
> >
> > But then one problem still persists: when the hwmon driver probes a
> > device it automatically creates the sysfs entries. This is unintended
> > behaviour from nouveau's point of view. The sensor value is not the real
> > temperature value; it has to be scaled with some factor and an offset
> > hard-coded in the video bios tables. This scaling could only be done on
> > nouveau's side, so the hwmon driver is exposing an interface with wrong
> > values to the userspace.
> >
> > We need a way to use the hwmon i2c driver without exposing this
> > interface. Do you have any preferred way how we could achieve this?
> >
> The whole point of the hwmon subsystem is to expose hardware monitoring
> attributes to userspace. A hwmon driver without sysfs attributes does not
> make sense.
> On Mon, Feb 28, 2011 at 12:50:45PM -0500, Lucas Stach wrote:
> > Hello all,
> >
> > let me revive this discussion a bit. After reading some things about the
> > matter I think the way to go is to use Intels thermal framework. It
> > should be easy to add the needed temp_get and fan_set functions to the
> > affected hwmon drivers.
> >
> > But then one problem still persists: when the hwmon driver probes a
> > device it automatically creates the sysfs entries. This is unintended
> > behaviour from nouveau's point of view. The sensor value is not the real
> > temperature value; it has to be scaled with some factor and an offset
> > hard-coded in the video bios tables. This scaling could only be done on
> > nouveau's side, so the hwmon driver is exposing an interface with wrong
> > values to the userspace.
> >
> > We need a way to use the hwmon i2c driver without exposing this
> > interface. Do you have any preferred way how we could achieve this?
> >
> The whole point of the hwmon subsystem is to expose hardware monitoring
> attributes to userspace. A hwmon driver without sysfs attributes does not
> make sense.
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